7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 1/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 2/401
ON,
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 3/401
1942
TON,6x6
onof
eYellowTruckandCoach
~T7YI\'. 502-
tions
32
Characteristics4-73-9
s...;8-2410-57
eandInspection28-4159-68
5
46-5376-79
4-5780-81
182-84
tructions
Maintenance62-6685-94
PartsandAccessories...68-6997
0-7998-109
0-87110-115
116-151
63
124164-174
Wiring125-129175-183
tartingMotor
191
nition140-150192-202
eneratorandControl151-159203-210
Lighting160-171211-221
Accessories172-174222-225
-257
-191258-262
08264-277
dParts,... .209-218278-297
uges219-221298-303
vingAxle222-228304-317
Drive229-240318-327
241-250328-337
51-259338-349
sionPower260-264350-352
vingAxle265-272353-360
-279361-367
aringsandTires280-290368-381
82-391
1392
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 4/401
S
tofthemanual2
5,1942,isintendedto servetemporarily
farevisionnowin preparationwhichwill
nformationandguidancetothepersonnel
with theoperationandmaintenanceof
GEMENTOFTHEMANUAL
ininformationchieflyfortheguidance
ctionsXthroughXXXVIIIcontainin-
yfortheguidanceofpersonneldoing
dardNomenclatureLists,Technical
ationsforthematerialdescribedherein.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 5/401
NDCHARACTERISTICS
N(Figs.1and2)
manualis knownasTruck,Amphibi-
designedforamphibiousservice—opera-
iclehasautomotivecharacteristicsofa
ndinadditionisequippedwithan integral
nsuchamannerthat truckchassisand
and inbodyofhull.For landoperation,
wheelsdrivenbyconventionalsixcylinder
ughtransmission,transfercase,andpro-
eration,vehicleispropelledwitha water
ginethroughtransmissionandawater
atruck,frontwheelsare steeredwith
rassembly.Whenoperatinginwater,ve-
neduseof frontwheelsandarudderwhich
peratedbythesteeringgear column.
dbysixdriving wheels,"boat"shaped
uettecabandcargocompartment.Springs
hedtobottomof hullandsuspendin water
terpropellerandrudderaremountedin
lates.Vehicleserialnumberplate,
menclature,model,payload,etc.,asshown
icationplate,Fig.4,givestheTM
anualandpartslist tousewiththeseve-
ngineserialnumberplate, Fig.5,
eof enginelowerpartofcylinderblock
sshowninillustrations.
lttoacceptchassisframeandpower
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 6/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 7/401
NDCHARACTERISTICS
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 8/401
ON,6x6
ANTRUCK21/2TON6X6 \Q
MAINTAININGTRUCK
T
TRUCKMODEL
!
LBS.
LBS.
FACTURER
LINE70MIN
30
MFG.CO
mber(Nomenclature)
nddrivingaxlesareattachedto and
ame withboltsandattachingpartsade-
hull isdeckedforwardofopendriver's
arwheels,andalongboth sides.Acrash
hullatdeckheight.
scompartmentisopen typewithre-
penback.Compartmentisequippedwith
hside.Windshieldfoldseitherforward,
d.Compartmentisequippedwithdriver's
ntrancefromtherear oroverside.
atrearof cab,willaccommodatefor
tely25menandequipmentorapproxi-
TOTHISVEHICLE
-802
M9-1802
te
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 9/401
NDCHARACTERISTICS
HMFG.CO.
mberPlate
.Hatchesinreardeckandfloor provide
holds,alsorudder operatingmechanism
hatchesinbowpermit accesstoengine,
compartment.
ission
meandaccessiblethroughmain
ylinder,valve-in-headtypewith269.5
t.Powerplantisremovablethroughhatch.
vespeedsforwardand onereverse
nd overdriveinfifth.Powertake-offfor
ountedonleftsideoftransmission.
sepermitsdriveofrearaxles,or front
uponpositionofmanualshift levers.Axles
tionalpropellershaftsanduniversal
ter-tighthousings.
rcase,mountedindriveline between
case,permitsengagementordisengage-
aterpropellerisdriven throughpropeller
Shaftingisequippedwith marinetype
terleakagewhereitpasses throughhull
ch,mountedatrear,is drivenby
off.Winchiscontrolledbyshiftleverin
h.Chocksandguidesforfront orrear
reprovidedonhull.
perminuteself-primingrotary
terpropellershaft,isconnectedthrough
tormanifoldtothefourlowestpartsof
ecentrifugalpump,alsopowerdrivenby
hargesfrommainpartofhull when
cityofrotarypump.50-gallonperminute
emergencyuse.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 10/401
ON,6x6
nsionalillustration.
372inches
—topup106inches
hes
6inches
ches
nches
es
44inches
ck—front23inches
ck—rear18inches
aming—frontandrear..28 inches
eels44inches
els49inches
aming.180cu.ft.
ar,82" wide,149"long.
inbows364cu.ft.
loorfront.
loorrear.
yDeserttype.
water13,000lbs.
d13,600lbs.
800lbs.
10qts.—Dry11qts.
ase1pt.
forwardrear—each)....13pts.
drear)10pts.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 11/401
NDCHARACTERISTICS
5
es)525Ibs.
meter(land)
meter(water)
ees
degrees
ngability60%
gability60%
utrefueling—5,000#load—
5m.p.h400miles
speed50m.p.h.
4m.p.h.
n Highfirst1.2secs.
.in Highsecond3.3secs.
h.inHigh fourth29.0secs.
750enginer.p.m.
0m.p.h.
.50m.p.h.
m.p.h.@
000#load,fullthrottle—smooth
ph
h!
e)4.2m.p.h.
ve)transmissionisnotused
peller.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 12/401
ON
ns8
terms10
1
gauges12
13
rationpreventivemaintenance....14
5
6
17
n...._ '18
on19
owing22
dwater24
TRUCTIONS
dinstructionsoutlinedinthis sec-
ssentialfactors ofdrivingthisvehicleon
k,but alsoincludeuniqueandimportant
fvehiclein amphibiousservice.Opera-
cleof thistyperequiresbasictrainingin
haknowledgeofwateroperationfunda-
thevehicleas a"land"truckre-
the fundamentalsofoperatingaconven-
,the drivermusttakeintoconsidera-
ofthis vehicle.Inaddition,drivershould
sticsofthevehicle suchaswidth,height,
hangs,visibilityandweight.
enceasadriver ofa6x 6truckis
rvicetraining;however,operatingper-
ithinstructionsapplicableto wateroper-
operatethevehiclein water.
Plates.Variouscautionand instruc-
river'scompartment.Theseplatesareillus-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 13/401
ON
KE^
DASH
OHELP
EVERENGINE
70*
TOKEEP
GHWATER
STRUCTIONPLATE
ROADSPEEDS\O
RPOSITIONSJ
ANGEIN
.MAX.ENGINESPEED/^
NPLATE
PELLER-DCPRESS\O
HEMPULLUPCONTROL^
NGILEAVINGWATER
MAX.WATERPERFORMANCE
HWATERPERFORMANCE
LE-i.4 M.P.H.-O.BM.P.CAL.
LE-5.4M.P.H.-1.4M.P.6AL.
.1M.P.H.-g.SM.P.GAL.
ROTTLE,ALLWHEELS,HI-RANGE
OPELLERWHENOUT
PINGBILGE-THENONLY
ECONDGEARy<L
UCTIONPLATE
ructionPlates
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 14/401
TON,6x6
R
HICLE
WITH
RAS
OPERATIONS,ALSOj
ULLING,SNOW&ICE.J
E
SE
BLING
OCKS.
NDOPERATIONSJ
UND
ECTED
OVER.
DTRANSFERCASEINSTRUCTIONPLATE
VALVES
EVALVEATATIME
ARTMENT
OPENHOTAIR
MPEACHLINEDRV,
VES.
DDRAIN,ALSO
EINCENTRIFUGAL
D
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 15/401
ON
sincludedinothersectionsofthis
hlystudiedbydriverand crew.These
to recognizeevengradualchangesinthe
ariousunits,andwillthusencouragecor-
ure.Knowledgeofvarioustroublesymp-
eswillenabledriverandcrewto apply
enoperatingundercriticalandadversecon-
UREANDTERMS
anamphibioustruckwhicharedif-
yencounteredona"land"truck.Inaddi-
ntheoperationof vehicleinwaterwhich
enoperatingvehicleasa truck.Wherever
mswhendescribingvariouscomponent
avoided.However,insomeinstances,
ppliedtoaboatmustnecessarilybeused,
ngwaterpropeller,bilges,rudder,etc.
etoFig.8.
owingtabledefinesvariousoperat-
reusedindescribingvehicleandits opera-
al.
nor rearofvehicle.
ngapparatus.
nerallyequippedwithtwohooks
anchororholdvehicle
nerallyplacedinholdofboatto
ofboatatits widestpart.
boatorvehicle.
boat.
directlyacrossatfrontorrear as
ngalongside.
lseparatingcompartments.
r cables.
generallyaroundopenings,topre-
oats.
esurfaceofthe watertothe
hicle,whenfloating.
guideforropeor cable.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 16/401
TON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 17/401
ON
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 18/401
ON,6x6
ctsideof vehiclewhencoming
le,ship,ordock.
gin thedeck,generallyhinged
ichaship issteered,therud-
belowfloor ordeck—space
thatpartwhichformsthe
atherortheside oppositeto
ows,theshelteredside.
vehicle.
hore.
okingfromstern(rear)
eopeningatrearof vehicleinwhichwater
ounted.
ticallynearvehicle'sstern.In-
ggearsothatwhenit is
medirection(water
etdowninto watertoforma
tinwater.Usedwhen
malmanner.
gonallyfromfrontor rearofone
nother,generallyused
clealongsideinwater,
sselor dock.
shiplookingfromstern(rear)
motionsufficientto makeavesselan-
e steeringofvehicle
atorvehicle.
scribing"V"typesupport
erinalignment.
preventleakageat ashaft—suchas
derpost.
rygearcaseorpowertake-offmounted
dwaterpropellershafting
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 19/401
ON
ddisengagementofwater
esselinthewater.
(sometimesreferredtoasa"wheel"or
nderhull,is driven
ssiontopropelvehicle
water propeller,orthesteer-
SUPPLY
(Fig. 9),mountedonright-hand
eafter enginecompartmenthatchis
ofcrankcase,typeoflubricantr ecom-
ng,andflushingintervalsareoutlinedin
),mountedon right-handsideof
fterenginecompartmenthatchis raised.
sgraduatedshowingrelativeoillevelof
dbepulled out,lowerportionwipedoff
edto itslimit,thenpulledout againfor
crankcasewillbeindicatedongraduated
ck.Crankcaseoilshouldbekeptup tothe
erandDip Stick
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 20/401
ON,6x6
performance,gasolinewithan
veshouldbeused.Instructionplateis
ver.Fuelwithanoctaneratingwith less
ecessitatesthereadjustmentofignition
e, engineperformancewillbeaffected.
ocatedatrearofvehicleonleft-hand
enishingfueltank,sameprecaution
ing fueltankonaconventionaltruck.
eproperly groundedtopreventstatic
akento prevententranceofdirtorwater
s beenspilledintocompartments
tsmustbethoroughlycleanedandall
ttemptingtostartengine.Asamatterof
artmenthatchshouldberaised andcompart-
dafterengineoperation.
renginecoolingsystemisfresh,clean
ddedinhibitors(rust preventives)and
mperaturebelow32°F.).Donotusesalt
ceptinextremeemergency— thendrain
ris available.
cessibleafterenginecompartment
scapis conventionalnotchtypeandcare
ovingitif engineishot.
mlackof water,donotaddcoldwater
ouldonlybefilledafterboilinghasceased
henaddwaterslowly,preferablywithen-
houldnotbe pouredintosystemwhen
ngeintemperaturemaydamagecylinder
CHES,ANDGAUGES
switches,andgaugesare,withfew
ntedoninstrumentpanel(Figs.10and11),
river.Locationandpurposeof thesecon-
eedingparagraphs.
isgaugeindicatestemperatureof
otquantityofwaterin system).Water
onoperatingconditions,load,etc.Normal
ngeshouldbebetween160°F.to185°F.
h212°F.(generallyboiling),engine
seofoverheatingdeterminedandcor-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 21/401
ON
artment
er
ates
per
t
olLevers
Lever
ever
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 22/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 23/401
ON
witch
ton
chcontrolbuttonispushed com-
erviceandblackout,areturnedoff.Black-
cannotbe operatedwithswitchinthis
enswitchbuttonispulledto first
psandblackoutstopandtaillampsare
dinplacewithautomaticplungertype
sition.
hlockingbuttonatleftof switch
eforeswitchbuttoncanbe pulledtosecond
Whenswitchisin serviceposition,service
ndtaillamps,and instrumentpanellights
on.Whenswitchbuttonis pulled
oplightsmaybeoperatedfordaylight
witch.Blackoutdrivinglight
entpanel(marked"B.O.Drive"),ener-
twhichisinstalledadjacentto left-hand
vinglight,whichis ashieldedtype,isused
dblackoutheadlampswhenadditionalillu-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 24/401
ON,6x6
NLY)
tch
ngblackoutconditions.Blackoutdriving
elampuntil mainlightswitchisin first
aspreviouslyexplained.
ellightswitch,locatedoninstru-
el")isapush-pulltypeand energizes
ermainlightswitchis placedinsecond
ouslyexplained.
Enginestarterisoperatedby step-
sibletodriver'sright foot).Initialmove-
rterpinionwith flywheelteeth.Further
ctricalcircuitbetweenbatteryandstarter,
huscrankingengine.Whenenginestarts,
ompedalimmediately.CAUTION:Donot
is running.
ol.Vacuumwindshieldwiperis
dshield.Controlbuttonis providedfor
hownin Fig.10.Buttonispulledout to
ndpushedin toturnwiperoff.A hand
donright-handsectionofwindshield.
CONTROLS
olsarelocatedindriver'scompartment
poseofthesecontrolsaredescribedin
Actualoperationofeachcontrolundervari-
dinrespectiveoperationparagraphs.
essibletodriver'srightfoot)is used
eengine,dependingupondegreepedalis
enpedaliscompletelyreleased,engine
.Accelerationfromidlingto governed
epedalis presseddown.Corresponding
btainedbyreleasingpedal.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 25/401
ON
nright-handsideof enginejustabove
ecarbureterwhenvehiclehasbeenstand-
eorhasbeendrainedof fuel.
edal,accessibletodriver'sleftfoot,
lutch.Depressingclutchpedaldisengages
sothattransmissiongearsmaybe shifted.
r,accessibletodriver'srighthand,
earratiosorspeedsprovidedin transmis-
esfivespeedsforwardandonereverse.All
sedinconjunctionwithtransfercasewhen
ditiontotransmittingspeedand powerto
ropeller,transmissionalsotransmits
mpthrough interconnectedpowertake-off.
ransfercaseshiftleveris usedto
,neutral,or lowspeedsasrequiredto
mentofthisleverissuchthat lowrange
xle isinengagedposition.Transfercase
terpropeller.
Frontaxledeclutchingleverisused
rontaxledrive.This leverhasonlytwo
"out."Frontaxlemustbeengaged(lever
sfercasecanbe shiftedinto"low"posi-
enengaged,transfercasemaybe shifted
ge.
eelsareturnedor steeredbymeans
earassemblywhichisinterconnectedto
esandtierod withdraglink.
redduringwateroperationby means
ernjusttothe rearofwaterpropeller.
eelistransmittedthroughsteeringcolumn
withrudder.
Servicebrakepedal,accessibletoand
oot,controlsapplicationandreleaseof
edbrakeshoesateachwheel.Driverapplies
ebrakesas desired.Releaseofbrakesis
sfootpressureonpedal isreleased.
dbrakelever,locatedtorightof
pplicationofbrakebandassemblymounted
esystemoperatesdirectlyontransfer
ttingbrakingefforttowheelsthrough
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 26/401
ON,6x6
keshouldnotbeused tobrakevehicle
on.Primarypurposeofthisbrakeis to
tionorto assistinbringingit toanemer-
pulledback,springloaded latchwilllock
n.
ke-offshiftingleverisusedwhen
h.Therearethreeoperatingpositions,
h,"withneutralpositionsbetween.Refer
winch.
ompressorisdrivenby chainfrom
riveshaft.Pumpisplacedinengagement
whichhastwooperatingpositions,"in"
disengagedbeforetirepumpshift lever
veris usedtoengageordisengage
ercaseconnectedtorear ofmaintrans-
engagedwhenleveris pulledupand
pusheddown.Clutchmustbedisengaged
erisplacedintoengagedor disengaged
eris determinedbyselectionoftrans-
operation,transmissionshouldbeplaced
forforwardoperationorinto reversefor
erpropellershouldbeengagedonlywhen
er.Useof propelleronland,exceptfor
ng,shouldalwaysbe avoided.
comprisestwomechanicallyoperated
ping tovariouscompartments,andmani-
hichpermitsindependentpumpingofvari-
pump.
edunderdriver'scompartment,is
opellerdrive shaftandoperateswhen
Thispumpprovidespositivesuctionfrom
orright rearcompartmentsasselected
providedto permitpumpingofthe
ythisbilgepump.Thecompartmentscan
atimedependingupontheselectionat
operationwhenleaksarenotapparent
emiddlecontrolvalveshouldbeopened,
staptto requiretheuseofbilge pump.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 27/401
ON
ltedPosition
cybilgepumpislocatedbelowthe
peratedby chaindrivefromthewaterpro-
pservicesthemain (middle)section
eneralrule willnotoperateuntilthe water
hiscompartment.
callyoperatedbilgepumps,ahand
vided.Thispumpis stowedonright-hand
.Windshieldcanbeplacedintwo
telylowered.Fig.13showswindshieldin
ngnuts,oneoneachside asshownin
nedbeforewindshieldcanbeplacedin
canthenbelockedwithnuts atdesired
oweredPosition
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 28/401
ON,6x6
hieldincompletelyloweredposition.Ad-
asshown,mustbeloosenedtolowerwind-
eattachedtoforwarddeck.
xiliaryairintakeis openedorshut
hislocateddirectlyundercenterofwind-
eddownand forward,intakeisopened,per-
fairinto enginecompartment.Thisintake
cleis completelycoveredwithtarpaulin,
her,generallyreducingenginetempera-
eextinguisheris mountedina
eft-handsides torearofeachair outlet.
springtypeclampwhichmust beopened
eremoved.Extinguisherisoperatedby
enworkingupanddownlikea pump.Best
directingstreamofliquidatbaseof flame.
ofsurfcoamingatthe bowofve-
ashingoverbow,particularlyin rough
d.Surfcoamingcanberaised andlowered
inopenorclosedpositionby screwlocks
hcoversaresecureddowntocom-
elatches.Hatchesareequippedwithseals
ed,willpreventwaterfromenteringinto
EFOREOPERATIONPREVENTIVE
—VehicleExterior
ehiclefor evidenceofoilleakage
ngknucklehousings,pillowblock,and
kand tierodconnectionsandreport
nspectconditionoftires.
kelinesat allwheels.Seethateach
byits spring.
quipment(handtools,pioneertools,
kits,etc.)whichhavebeenassignedto
ingoodcondition,andproperlyattached
fastenings,etc.
rbladeandhose.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 29/401
N
Do notfilltankentirelyto topof
—VehicleInterior
oilleakagefromtransmission,power
ransfercase,andaxletransfercaseshould
permitsaccesstothese units.
—InEngineCompartment
iatorand replenishwateriflow.
echangedsinceprecedinginspection;if
diatorcoreand connections.
t itisin placeandproperlyadjusted.
ndconditionof oil.Iftherehas been
kfor leaksinoillines.If waterorother
oil,reportcondition.
onnectionsatcarbureter,fuelfilter,
exposedelectricalwiringandcon-
shouldbecleananddry.
tionofengineaccessories,including
cover,generator,starter,ignitionshield,
NLAND
tleverin"neutral."(All shiftlevers
ut"position.)
traightbackandlockinappliedposi-
uttonabout1/2".Thisisnot neces-
bouthalf-wayif engineiscold.In
hokebuttonmaybeheldcompletelyout.
"on"position.
todisengageclutchand holddown
.Releaseleverwhenenginestarts.
hrottleandchokeadjustmentsto
peed.
or.Thestartingmotorshouldnot
gerthan10 to15seconds.Afterstarter
tresults,aperiodof 10to15 secondsshould
ragain.
enginewillnot startafterreason-
nuetousestarting motoruntilreasonfor
orrected.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 30/401
ON,6x6
fstarterfailstocrankor cranks
wntobe ingoodcondition,reportstarting
hority,thenuse handcrankingmethod.
nggearismountedonpropeller
pellertransfercase.Handcrankenginein
stspeed.
erinneutral position.
r.
makesure propellerisclear.
ingbarincogof crankinggear.Stand-
ofvehicle,pullsharplyoncrankingbar
r twotimesbeforeturningignitionswitch
bouti/2".
riverisattendingvehicle)chokebut-
kehasbeenusedduringrepeatedefforts
notbenecessarytousechokewhenhand
Pull sharplyoncrankingbar.
rankingbarto startengine.
mediatelysteponclutch,disengage
etransmissioninneutral.Donot runwater
me unlessvehicleisinwater.
rtinfiveor sixcrankings,reference
e-Shooting"tableinSectionXXIV,"En-
ofenginefailure.
maybe startedbytowingvehiclein
canbestartedbytowingwithvehicleonly
dbeofsufficientlengthto permit
ehicles.
ncethrottleaboutyz".Pullchokeout
used.
urth(fifthif tractionisdifficult).
igh."
beengaged.
h.
e first100feet,disengageclutch.
eedreachesapproximately10m.p.h.,
ediatelyafterenginestarts.
Startingengineincold weather
providingvariouscoldweatherprepara-
ferenceshouldbemadetoSectionVI,
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 31/401
ON
ubricantsrecommendedforusein cold
nandroutinemaintenanceoperationsitem-
ngSystem,"andSectionXIX,"Starting
dbefollowed.
tarted,engineshould bepermitted
rm-up"periodwheneverconditionspermit.
desthedriveranopportunityto observe
fenginebeforethevehicleisplacedunder
smoothly,listenforanyunusual
ttering,etc.Reportanyunusualnoisesim-
rity.
oolingtemperatureshouldslowly
atureofapproximately165°F.isreached.
allottedduring whichtemperatureshould
erictemperature,lengthoftimeenginehas
thisperiodof"warm-up."However,iftem-
venormalupto boiling(212°F.),engine
pped,overheatingcausedeterminedand
enenginefirst starts,consistency
seinthe oilpressurereadingongauge.
essureshould recedeslowlytonormal.
yfluctuateasenginespeedincreasesorde-
erraticfluctuationofoil pressureindicates
mmediatelystopped,andconditionin-
augedoesnotindicatequantityofoil in
ninstrumentpanelindicatescharg-
ystem.Ammetermayormaynotshow
gwhenengineis firststarted.Asa
showchargeasenginespeedis increased,
tartingmotorhasdrainedbattery.Am-
essivedischargeduringwarm-upperiod.
LAND
and operationaregroupedindriver's
cationsandpurposeshavebeenexplained
aragraphsbrieflyoutlinefundamentalrequi-
nofvehicleonland.
mplishprocedureoutlinedinPara33.
AxleShiftCombinations
byrear axlesonly,orbyfrontand
otbedrivenindependently.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 32/401
ON,6x6
Transfercasemaybe operatedin
edeclutchinglevermustbein "OUT"
nnotbeoperatedin"low"("L"onshift
sare driving.
ving.Front axledeclutchinglever
ansfercase cannotbeplacedinto"low"
eris placedinto"IN"position.Afterfront
ansfercasecanbeoperatedin either"high"
usingtransmissiontooperate
rontandrear axlesmaybedrivenatsame
ersinpositions aspreviouslyexplained.
omLowtoHighSpeeds
ositionforaxledrive,transmission
beaccomplishedinsuccessivestagesas
ndreleaseacceleratorpedal.
tleverfromneutralinto firstspeed
eonclutchpedalandat sametime
orpedal.
ade,accelerateengineuntilroad
oximatelythatindicatedonplate(Fig.7).
mumroadspeedsatvarioustransmission
peratedin"low"and "high".
peedhasbeenobtainedin firstspeed,
,depressclutchpedal,andplacetransmis-
ition.
dacceleratetoproperroadspeed,
hrough(e)for third,fourthandfifth
es.
direct"andisgenerallyusedfornor-
eroads.Fifthspeedis "over-drive"andis
aximum"no-load"speedongoodroads.
omHightoLowSpeeds
waysbeshiftedintonext lowerspeed
or,or vehiclespeedismateriallydecreased.
g"isgenerallyapparentwhenascending
orepowerisneededtopull onroughterrain,
ecautionarymeasure,thesameratioused
e usedwhendescending."Double-clutch"
forshiftfromhigh tolowertransmission
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 33/401
ON
ndreleaseacceleratorpedalatsame
tleverinto"neutral"("N").
ndaccelerateenginemomentarilyto
gainandmovetransmissionshift
.Donot useforceonlever,"feel"itinto
ndaccelerateenginetodesiredspeed.
iftedsuccessivelyintoallnext
ner.
hift
ought toadeadstopbefore trans-
reversepositionin followingmanner:
todisengageclutch.
aspossibletothe right,thentoward
on.
ndaccelerateenginetodesiredroad
n off-the-roadoperations,onsteep
ng.Frontaxle shouldnotbeengaged
eroadsundernormalconditions.
edor disengagedatanyvehicle
edonlywhentransfercaseis inneutral
chisnotnecessary;however,thisusetends
er.Considerablepressuremaybeneces-
edeclutchinglever;however,thiscondi-
rouble.
ghtoLow
adewhilevehicleisstillon hardground
sencountered.Frontaxlemustbe en-
ecanbeoperatedin"low"range.
hingleverinto"IN"position.
ndmovetransfercaseshift leverinto
ndaccelerateengine(approximately
ed).
gainandmovetransfercaseshift
sition.Donotuse excessivepressure.
elerateenginetodesiredspeed.
wtoHigh
omplishedregardlessofvehiclespeed.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 34/401
ON,6x6
ndmoveshiftlever intoneutral("N")
ndaccelerateenginetosynchronize
gain,thenmovetransfercaseshift
n.Accelerateenginetodesiredspeed.
memannerasemployedwhendriving
udderlinkageispermanentlylinkedto
wever,rudderactiondoesnotinterfere
siderationmustbetakenof vehicle'swidth
enmakingaturn.Referto Para.7for
ations.
aysshiftintolowertransmission
nstolabor.This canbeaccomplishedmost
estillhassufficientmomentumtopermit
ngingvehicletoastop.Front axleshould
psteepgrades.
waysshiftintolowertransmission
neto actasabraketo assistincontrolling
mitthevehicleto exceedmaximumroad
iving downgrades.Excessiveengine
uchconditionsareharmfultoengine.
gtoalowergear atanyrateof
thatenginespeedissynchronizedwith
hisengaged.Ifclutchisengagedat time
erthanrelativeroadspeed,driveline parts
rain
xleinoff-the-roadoperation,onsteep
llingin sand,mudorclay.
mp"vehicleoutofdeepsand,mudor
to"dig."Whenvehicleprogressstops,
enreverseslowlyforseveralfeetoruntil
.Goforwardslowlyagain anddeclutch
lsstartdigging.Itmaybenecessaryto
eraltimestomakea track,ifpossible,in
esscannotbemadebyusingthis procedure,
sist vehicleoutofthemudor sandbefore
perateinsoft sand,reducepressure
5Ibs. Tiresshouldbereinflatedtorecom-
perationonsolidground.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 35/401
ON
NLAND
d
edal.
owlyandevenlyuntil vehicleis
applyevenpressure.Thiswillpermit
ngspeed.
ormalstop,releaseacceleratorpedal,
byevenpressureonbrakepedal.
ndmovetransmissionshiftleveri nto
akepedalto bringvehicletoslow
k vehicle.
tleverinto neutralposition.Place
erinto"out"position.
alstop(Para.17b.).
tlinedinPara.34.
ERATION
PreventiveMaintenance
ed,andshould beperformedinaddi-
der"Pre-startingandBeforeOperation"
nd
andseethat itissecurelymounted
tersuchasweeds,dirt, etc.,from
ellerrear shaftinginrear"out-
xcessivelyloose.
ershaftrear"out-board"bearing,
Lubrication."
t.Ruddershouldbe 3degreesto
raight ahead.Reportloosenessofrudder
ngboltsatallpoints ofattachment
panelsforpossibledamageduring
haveresultedinpenetrationofpanels.
oughexaminationof"bellows"
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 36/401
ON,6x6
propellershafthousingsundervehicle.See
elytightened.Reporttheslightestevidence
lows.Ifthesepartsare damagedorinany
wvehicletoenterwateruntil newpartsare
alled.
eson axlesandpillowblock.Re-
nbottomandsidesof hull.Seethat
ghtenedinplace.
d
ndthoroughlyventilateinteriorof
nt.
ments.Noteandreportpresenceof
ybe anindicationofleakagefromthe
psand operationofcontrolvalves.
ompartmentshouldbethoroughlypumped
leaves,paper,sand,dirt,twigs,orother
umpdrive beltforpropertension.
dtensionof drivingchainatcen-
pmentthathavebeenassignedto
ingoodcondition,andsecurelyattached.
herflapvalveandplungerin the
onditionofemergencybuckets.
ndsealsand seethathatchesare
d.
ticipated,cargocovershouldbe
desandcargosecuredin place.
ble,pulleysandlinkage.Reportex-
enterswater
pectwaterpropellershaft,stuffing
se showanyindicationofexcessiveleak-
tightened.Donotsetglandnuts extremely
erheatingofstuffingbox.Aslightseepage
oxmaybeconsiderednormal.
forwaterleaks.Specialattention
ams,especiallypropellertunnel.
atorytoenteringwater,embracesall
as.15a.throughf.
dwhilevehicleis afloat,instructions
ouldbeused,withtheexceptionofPara.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 37/401
ON
ginecannotbestartedbytowingvehicle
agoodpracticetotestoperationof
ngwater.Thisis notnecessary,however,
ittent.Iftime permits,makefollowing
fullofwater intoeachcompartment.
enoughtocoversuctionendofbilge pipes.
equiremore.Vehicleshouldbeplacedso
hanfront.
fercaseshiftlever isinneutralposi-
lacewaterpropellershiftleverin
thenplacetransmissiondirectlyinto
ndaccelerateenginetoaboutyzfull
ntrolvalveata timeuntilthatparticular
Onlyonevalveshouldbeopenedat a
gefromoutletonleftside ofhullnear
elerateengine,depressclutchpedal,
verintoneutral,thendisengagewater
tingwaterpropelleronland,make
rsternofvehicleasa safetyprecaution.
dedand willinflictseriousinjuryupon
aterpropelleronlandfor anylengthof
OPERATION
lewillenterwaterfromland.This
axles.Otherconditionsmaynecessitate
fromship's sidewhichmaynotrequire
s
equipmentmustbethoroughlyse-
er.Auxiliaryairintakeshouldbeclosed.
ofentrytodeterminetransmission
ringwater.If softsandispresentat
expectedatanyfuturelandingpoint,all
approximately15Ibs.
ughlywarmedup,and oil,gasand
replenished,ifnecessary.
gh sea,orheavyloadis anticipated,
of vehicle.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 38/401
ON,6x6
dualslope intowater.Ifnecessaryto
ucky,orrockyterrain,takeintoconsidera-
handdepartureanglesandgroundclear-
vehicleenterswithonly wheels
hingleverintoengagedposition,
osecondspeed,andtransfercaseshift
whengoingintowaterand continue
cleis afloat.
cleisafloat,accomplishfollowing
l hardtostopwheelsfromrotating.
tleverdirectlyintosecondforward
hiftleverinto engagedposition
daccelerateenginerapidlyatthe
d.
owaterandthere seemstobe
ng wheels,steponclutchmomentarily
ftleverinto neutralposition.Itisnot
ontaxle,asfrontaxledrive willbeneeded
a)through(g) shouldbeaccom-
asquicklyaspossible.Donotforceany of
withextremepressurebutrather"feel"
engaged,bestoperationisfull
nsecondforwardspeed.
ysurf,strongcurrent,orwhenmaxi-
erpropellermaybe operated,aswellas
ehicleenterswater,asfollows:
sbeforeattemptingtomakewater
ndplacewaterpropellerinto en-
onintosecondspeed,frontaxledeclutch-
,andtransfercaseintohigh.
Or Pier
gfroma shipforentrytowater,make
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 39/401
ON
medupand operatingasvehicleisplaceu
asbeenlaunchedandmooringlinescast
beimmediatelyengagedwithtransmis-
hip'ssideorpier,push frontofve-
rningfrontawaysharply.If sharpturn
made,backofvehiclewilltendto swerve
usepossibledamage.Ifpossiblewhenleav-
ier,push vehiclewelloutintowaterbefore
mpers)attheside ofvehiclewhen
er.
R
beestablishedforoperatingor
ariousconditionsrequiredifferentopera-
ghknowledgeofsteeringinwater,water
dbilgepumpsystem,togetherwithknowl-
yexpedients,isessential.Recommendations
cceedingsub-paragraphshavebeencom-
ce.Theseinstructionsshouldbethoroughly
heinstructionsincludeonlyoperationun-
eferenceshouldbemadetoPara.23,"Emer-
yout-of-the-ordinaryconditionswhichmay
ichit issteeredinwateris mounted
operatedorturnedbycablesattachedto
rcolumn.Asrudderisattachednearstern,
obtainedbyforcingsternthe opposite
turn.Driver,however,turnssteering
tomotivemanner.
smoreturningof steeringwheel
noperatingon land.Whilerudderresponds
ngwheel,thevehicle'sresponseis notas
nd.It isthereforenecessarytoanticipate
nwater.This isparticularlynecessary
ter.
courseinroughwater,drivermust
of wavesbyturningsteeringwheelahead
ingorswervingfromthedesiredcourse
eisallowedto startswerving,itwilltake
gitbackto itscourse.
erextremelyadverseseaconditions,
ucetroublefromwaves.Whenlandingbe-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 40/401
ON,6x6
lutelysquareinfront ofwavesandreduce
achesstern.
thantopspeed,bearinmind that
uldbemaintainedtoprovidesteerageway.
edofvehicleto pointwhererudderwill
nalshortspurtsofengineshouldbe madeto
struddertoprovidedesiredsteering.When
hwater,makeallspeedpossiblebetween
drivingwheelstouchbottom.
an objectinwater,rememberthat
ervetowardan objectwhenvehicleis
erunderaverageconditions,requires
niqueasusedwhenreversing"land"vehicle.
windsandrough water,however,reverse
Themostsatisfactoryreversesteering
sternin desireddirectionwhilestilldriv-
of vehicleturningandaspropelleris
rnwill generallybemaintained.
sindriving position(highrange)as
npowerand steeringofvehicleinreverse.
propellercanbeengagedin second
peed—fullthrottle,orthirdspeed—M
onwaterisattainedin secondspeed—full
lerinstructionplate—Fig.6).Whenthird
throttleorY$ throttle,speedonwateris
leageisincreasedasitemizedoninstruction
^throttleis obtainedinfollowingmanner:
ellerandengagerearwheelshigh range.
dometerregisters12 m.p.h.(rearwheels
yinwater).
iningin positionfor12m.p.h.,rear
disengagerearwheels(transfercaseinto
erpropellerandoperateatsamethrottle
gWaterPropeller.Ifnecessaryto
erpropellerwhileoperatinginwater,fol-
beaccomplished:
nddecelerateengine.
pellershift levertodisengageor
aseclutch.
eto makeaquickstopwithvehicle
vehiclebrakeshavenoeffectwhen
ristheonlymethodofstoppingin water.
einwater,waterpropelleranddriving
dbereversed.Drivermustforeseea stop
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 41/401
ON
singis necessary.Whensuchconditions
cleinfollowingmanner:
nddecelerateengine.
xledeclutchingleverisinto"IN"
ercaseinto"high"range.
dalin depressedposition,placetrans-
ndaccelerateenginetofullthrottle
heckedtopoint ofcontrol,reduce
neuverproperly.
m.,"BilgePumpControl,"theme-
stemconsistsoftwobilgepumpsoperated
g.Thesepumpsoperateonlywhenwater
tion.
ouscompartmentsinhulldepends
ffvalves,it isimportantthatattentionbe
gofall compartmentswhileoperatingin
vesmustbeclosedexcepttheonewhich-
bepumped.Itisa practicalplantoalternate
minutesduringoperationincalmwaterto
mpartmentsofanywaterwhichmayseep
Underaverageoperatingconditions,the
ofcentercompartmentshouldbeleftopen
hwater,note wherevehicleis"ship-
gepumpcontrolvalvesaccordingly.Ref-
Para.23,"EmergencyExpedients"for
mergencyconditions.
ER
mberwhenlanding,isthatalldriving
gbeforelandis approached.Agradualslope
ted,ifpossible.Alsoavoid,if possible,
,orthickweedpatches.Weedsmaytend
r.
conditionsmustbe takenintocon-
ingland.Undernormalconditionswhere
ghwaterarenot present,approachshould
er:
d,thedrivingwheelsshouldbe en-
ancebeforereachingshallowwater.(This
henapproachinglandinroughwater.)
ngagementbydepressingclutch,placing
erinto"in"position,andplacingtransfer
y"low")range.
throttle withpropellerandwheels
Afterwheelsaregroundedandvehicleis
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 42/401
ON,6x6
opellermustbe disengaged,andtransmis-
lever placedintosuitabledrivingposi-
nt.Iflandingmustbe madeina
approachwellabovepointofdeparture.
pproximatelya45 degreeangle.After
ofvehiclewilltend toswingdownwiththe
itmaybenecessarytocomein atacloser
erlanding,bilges shouldbecom-
ainedinPara.18c.,"TestingBilgePumps."
side vehicleaddsconsiderablytoweight
beforeoperatingon roughterrain.Also,
ccomplishtheoperationsitemizedinSec-
nanceandInspection"pertainingto
GANDTOWING
compartment,isusedwithintercon-
erlinesto holdvehicletobottom.When
pointsofanchor,fastentobottom,thus
.
ackleto winchcablehook.Remove
astenshackleintochainring.Installbolt
eanchormustbefastenedsecurelytoline
overboard.
ynecessaryunderemergencycon-
dcableshould beconnectedtoanchor,as
esafest anchoring.
ditions,anybulky,heavyobjectcan
hassparetireandwheel,etc.
chorinextremelydeepwater,addi-
etdown intothewater.Thetarpaulin,
okeepitunder water,canbeused.This
ducedrifting.
oughweather,avoidmooringalong-
ever,ifnecessaryto moor,longmooring
ducestrain.Boworfrontofvehicleshould
ndis strongerthancurrent,inwhichcase
illustrates methodofmooringvehicle
eastlinesatfrontand rear,andspringlines
icletodockasshown.Theselinesshould
gagainstdock.Itis necessary,however,to
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 43/401
ON
oringVehicle
eandfallof tidewhenmooring.Lineshould
dasnecessarytomeetconditions.
whicharecommonlyusedwhen
hicleatsternand towedvehiclealongside
Alwaysdroptowbeforeattemptingto
eoutofwater[see(4) (c)].
Fortowingpurposesinthewater,
ithatowhook anchorshackleatthefront
eguide),pintlehookat rear(justbelow
sonright andleftside.
(Fig.16). Towcableshouldbeat-
tlehookontowingvehicleor directfrom
kanchorshackleontowedvehicle.Tow
ately100feetlongtopermit maneuver-
enoperatinginrough water,thelongest
used. Whenapproachingbank,towedve-
osetotowingunit.Slacktowcablesothat
andingwithoutaddedload,thenlandother
owedvehicledirectlybehindfrontvehicle.
ingatStern
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 44/401
ON,6x6
ingAlongside
de(Fig.17).Insmoothwater,when
gisnecessary,itisadvisabletotowanother
efenders(bumpers)shouldbeusedbe-
wounits shouldbemooredtogetheras
howsuseof"breast"and"spring"
uveringalongside.Breastlinesatfront
moutsidelifting eyeofoneunitto theout-
it.Springlinesshouldextendfrominside,
ttotheinside rearliftingeyeofanother.
otbetooclosetogether.Distance
uldvarybetween11/2fgetto 4feet.The
dif anywavesmightbeencountered.The
ximatelyonefootfartherapartthan the
terwill tendtokeepunitssafelyapart.
blesshouldbethoroughlywrapped
theypass throughcableguide,anchor
sorwhererubbingoccurs.Extremecare
lines frombecomingentangledinwater
NTS
chrequireemergencymeasuresmay
perations.Theseconditions,togetherwith
temizedinsucceedingparagraphsand
edbyoperatingcrew.Thecrewshould
ncyexpedientsshouldbeappliedas simul-
erthanattemptingtoaccomplishthem
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 45/401
ON
cies,everyknownexpedientshouldbeac-
steeringcablebreaksorrudderjams,
dder,oneofthreemethodsofemergency
e,stopwaterpropeller,openstern
secureruddertillersothatrudderis in
terrudderissecured,placeall wheelsinto
,waterpropellershaftleverin"in" posi-
econdspeed.Operateatfull throttleand
ithfrontwheels.Steeringwithwheels
swithrudder.
erwheelsinstraight-aheadposition
ofcrewsteervehiclewithtiller instern
ndwedgedatanangle,makingitim-
ddershaftmust bedisconnectedinstern
droppedthroughbottomofvehicle.Re-
edin SectionXXXIII,"SteeringSystem,"
sbeenremovedandhole plugged,vehicle
heels.Allwheelshigh rangeandwater
waterpropelleris renderedinopera-
emadebyusing allwheelsin"high"transfer
missionspeedfullthrottle.Water propel-
Underextremelyfavorableconditions,
ly2m.p.h.
s andvehicleisnearshore,shovels
oards,etc.willmakeusefulpaddles.If
stoff-shorewindorcurrent,anchorve-
es.
gepumpswillservicebilgesunder all
yreasonwaterpropellercannotbe op-
ncannotbereducedwithmechanicalbilge
gepumpand,if necessary,buckets,helmets,
bleforbailing. Toprimehandpump,hold
llbe forcedupthroughbottom.
chanicalbilgepumpswithoutwater
odamagedpropellerorif servingasasta-
ectwaterpropellershaftingtorearof
terlineshouldbepluggedwith wooden
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 46/401
ON,6x6
g fromoutsideandpullin throughhole.
terlinemayalsobe pluggedwith
.Wherepossible,startplugs orrags
eofhull.Pressureof waterwillassistin
netrationis justbelowwaterline,shifting
d maybringholeabovewaterline.
hweatherin water,actionofvehicle
le.Varioushintsinthesucceedingsub-
iedandappliedwhennecessaryascondi-
ughwater,steeringinreversewill be
g,sterncanbebestcontrolledbygiving
dspurtstoforcethesterninthe desired
etelycoveredwithcargotarpaulinand
enginemustreceiveitsair throughauxil-
roughwater,thiscan beopenedonly
tranceflapshouldbekeptopenontheside
cessarytogothroughheavysurf,all
a fewminutes,butshouldbeopenedas
gine.
aheavysurf, itisparticularlyim-
sof cargocoverbeabsolutelytight.
oroughlysecuredbeforeoperationin
from ahead,shiftmovableweights
owabovewaves,andto reducetendency
LANDANDWATER
eration,conditionsunderwhichwinch
methodsare importantwhenoperating
service.Winch,rearmounted,isusedto
tsundermany variedconditions.Ref-
etoSectionXXXVIII,"Winch"forme-
tructionsonwinchmechanism.
Winchisdrivenbypowertake-offat
ngagementforpullingor hoistingis
ftleverlocatedincab(Fig.10).This lever
ons;low,reverse,andhighwithneutral
elockingplate,attachedtofloorboard
tivemeansoflockingleverintoneutral
eandlow).Thisarrangementwillprevent
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 47/401
ON
wClutchLeverandDrumflangeLock
powertake-off.Anautomaticsafetybrake
oad whileleverisbeingshiftedinto
s.
ngjawclutchat winchmechanism.
anddisengagewinchdrum.Whensliding
intodisengagedposition,winchcablecan
dingjawclutchmustbeengagedtopermit
ower.
rumflangelock(Fig. 18)ismount-
eWoundEvenlyonDrum
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 48/401
ON
front,6to70Feef
Front,100fo120Feef
front,200fo250Feef
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 49/401
ON,6x6
nchingfromFront
ndlemechanism.Thislock,whichisspring
veralholesinthe winchdrumwhensliding
sition.This mechanismpreventscable
mwhilevehicleisunderway.Flangelock
anddisengagedfromthedrumbefore
gagedwithdrum.Disengagedposition
wnin Fig.18.
nchingfromRear
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 50/401
ON
chAroundTreewithCableasusedin
g jawclutchleverintorelasedposi-
rumflangelockhandle.Pulloffenough
roundTreewithChainasusedin
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 51/401
ON,6x6
withSnatchBlockandChainas usedin
slidingjawclutchleverintoen-
ngineclutchpedal,shiftpowertake-offlever
eavy,orhighpositionto takeslackor
en releaseengineclutchpedal.
ewith SnatchBlockasusedin
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 52/401
ON
asusedinFigure25
eclutchpedaland shifttake-offlever
ress engineclutchpedalandshift
everse.
susedI nFigure24
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 53/401
ON,6x6
asusedInFigure23
asusedInFigure27
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 54/401
ON
asusedinFigure22
asusedinFigure2 1
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 55/401
TON,6x6
asusedinFigure20
ertake-offlevermustbeinneutral
temustbein placetopreventleverbeing
ally.Winchslidingjawclutchshouldbein
rumflangelockinengagedposition
ullingspeedsarebased onmaximum
m.whichshouldnotbe exceededwhenusing
sterthanthisenginespeedwillresult in
bablefailureofparts.
Shift.
gspeeds(lowandhigh)are obtained
shiftlevertoengagepropergearing.Use
dlinglight loadsorlowerspeedposition
eenginewhen winching,especiallywhen
dorwhenwindingincablewith noload.
hingthisvehicle,alwaysassist
ebecomestight,usingtransmissionin
ls)andtransfer caseauxiliaryrange
edShift.Twomethodsmaybeused
le.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 56/401
ON
asusedinFigure26
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 57/401
ON,6x6
ding jawclutchintodisengaged
ockleverraisedup inlockeddisengaged
pendsupontheamountof pullappliedto
angewill automaticallykeepdrumfrom
ingtoorapidly.Careshouldbe takennot
a load.Shiftpowertake-offlever
atespeedby acceleratingengine.
oundondrumwithoutsomeloadon
ble,cableshouldbeproperlyattachedtoan
epulled forwardbywinch.(Slidingjaw
rtake-offleverintolow.)Averylight
byoperatorwhilewindingcablewill in-
.
stlayerof cableismostimportant.
againsteachothertopreventcoilson
ownbetweenthem.Cableshouldbewound
toobtain thisresult.Afterfirstlayeris
arytoseethat eachadditionallayerstarts
y.
onditions.Severalexamplesof
sconditionsareillustratedinFigs. 20
onsdonotpresent allconditionsunder
however,theyarebasedonactualexperi-
llustrated.Methodsofattachmentsof
pointsareillustratedinFigs. 28through
wnecessarysnatchblockandcable
ethodsshouldbeusedunder theconditions
ndPrecautions
th winch.Ifavehicleisassisting
drivingwheelsshouldbeutilized.Al-
ngtheinstantwinchcablestartsto take
notstartdrivingwheelsif thereisslack
ngwheelsareusedto assistwinchopera-
chisin low(pulling),transmissionin
ransfer caseinlowrange.
danchoris illustratedinFig.40.
menthasbeenmadetoanchorshackle,
guidedinto sandorgroundasshown,
akesup slackanddrivesflukesorpoints
r isoperatingalone,anchorpointscanbe
oredriverstarts tooperatewinch.Ifsand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 58/401
ON
chor,Maybeusedin MannerShownin
n bethrownoutandwilldig intoground,
oadisput onwinchcable.
hwillbemorepowerfulwithallthe
eit startstooperate.Undermanycondi-
However,thebestproceduretouseisto
mthe winchdrumaspossiblebeforestart-
lpermitwinchcabletobe pulled
henwinchingfromthefront.However,
ar,thisstraightpull cannotbeobtained
tis necessarytopullatanangle fromthe
e guidedevenlyontothedrumas the
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 59/401
eonthe hullforthemountingof stand-
ndmachinegun.
alledonvehicle,machinegunis
edtorightof driver.
TS
tsareprovidedat rightfrontcorner,
errearof driver'scompartment.These
amptypeandhold thelegsofmount
"U"boltsaretightened.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 60/401
CEANDINSPECTION
andinspectionterms29
eintoservice30
erationinspectionand
31
spection32
on33
ration35
ation36
eventivemaintenance37
eventivemaintenance38
ndpreventivemaintenance39
echanges40
vemaintenanceproceduresandopera-
onprovideanopportunityforcrewand
personneltoreplenishessentialoperating
ible,visualormanualinspectionimproper
nitsandsystems,andtomakeminorad-
towearduring normaloperation.Itsout-
natethe elementofneglectwhichistoo
en,unexpectedfailureofvehicleoperation.
NANCEANDINSPECTIONTERMS
whendescribinginspectionandpre-
rations.UsingArmsmaintenancepersonnel
veswiththeseterms.
DVEHICLEINTOSERVICE
sbeingplacedinto service,accom-
perationsincludedinParas.31and32.
EFOREOPERATIONINSPECTION
ENANCE
ngand beforeoperationinspection
nceprocedureistobesurethatcondition
gedsincethe after-operationinspections
eseproceduresareofaroutinenature,the
rin mindthatsuchinspectionsareim-
vehicleperformanceandcrewsafetydur-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 61/401
ON,6x6
oroughlyfamiliarwithrecommendedpro-
ughtheseinspectionsalmostautomatically
esizeupgeneralconditionofvehicle.
reoperationpreventivemaintenance
restto driver,theseproceduresarelisted
ntrolsand Operation."
RATIONINSPECTION
onpreventivemaintenanceprocedures
er,theseproceduresarelistedinPara.
dOperation."
OPERATION
nce,itistheattentionto littlethings
alnoisesorodorsand slightirregularities
akingnecessarystepstocorrectanydefects
epreventiveprocedure.Whilevehicleisin
nsfor anysoundswhichmaybeasign of
chesfortheodorof anoverheatedgen-
s,boilinganti-freeze,fuelvaporfromaleaky
gns oftrouble.Everytimeheusesbrakes,
eds,orturns,heconsidersit atestand
orunusualperformance.Onlyunderemer-
evehiclebeoperatedafterindicationsof
ed.
Operationlistenfor suchnoisesasthe
dicatethetroublespecified.
neratororwaterpumptrouble.
rtdrivercandomuchto avoidserious
stigatingandreportingthefirst signsof
sduringacceleration.
eofsteamduetooverheating.
sesunderfloorboards—Transmission,
rcasetrouble.
tioninandbeneathvehicle—Loose
bentpropellershaftorwornuniversal
requentlyatinstrumentpanelgauges
erature,oilpressure,ammeteractionand
fercasegearsshouldshift without
veplayor loosenessinsteeringmech-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 62/401
CEANDINSPECTION
ientactionofclutch.Clutchpedal
y21/2"freetravel.
thealertforlackofpoweror any
yindicateenginetrouble.Inthiswaythe
mpletebreakdown.Alwaysstopvehicle
eandtheconditionwill beeasiertocorrect.
LandOnly.—Inadditiontotheforego-
owinginspectionprocedureisprovidedfor
evelopsinwheelsitmaybedue to
djustmentandshouldbeinvestigatedand
cursonturnsandsharpcurvesit isan
nflationandexcessivespeedandshould
omaxles,itmaybeanindicationof
rnaxlegearsandshould beinvestigated
pullingto onesideorthe othermay
flation orrepair.Noteandreportineffi-
WaterOnly.—Inadditiontothefore-
wateroperationunderb,thefollowingpro-
eroperationonly.Ifthereis apossibility
terforperiodsof 24hoursormore,it is
n"BeforeOperation,""AtHalt,"and
mplished.
onofeachbilgecompartment,ifpos-
ityofexcessiveleaksorinabilityof bilge
entsempty.Bealerttooperationofbilge
flargequantitiesof waterwhichmaybe
anysectionof hullandtheneedfor imme-
onwhichmaybeanindicationofloose-
aftandbearings.
andauxiliaryintakeopenwhenpos-
ooling.
ulttoidentifyduring operationdueto
ioushullsections.Thedrivershouldtake
ocateandidentifyanythingthat might
tion.Drivershouldimmediatelyreportany
handle.Allinspectionoperationsinthis
perationonlyexceptthosegivenundere.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 63/401
TON,6x6
vehiclewhileat halt.
sshouldshowa normalreading.
vetemperatureofbrakedrumsor
anismcarefully.Reporttierodordrag
xcessivelyloose.
conditionoftires.
orlubricantleaksand notetempera-
astenings,etc.
andnote excessivetemperaturesof
.
—EngineStopped
ndreplenishwateriflow.
dconnectionsforleaks.
eckitsadjustment.
ndconditionof theoil.
ATEROPERATION
operationarenecessarytomakesure
sfactoryconditionforimmediateoperation
Unlessimmediatereturntowateropera-
lyafteroperation"inspectionoperation
omplished.
leinWater.Beforevehicleislanded,
oughinspectionshouldbemadeto deter-
roughouthull,inefficiencyofbilgepumps
anism.
—VehicleonLand—Note:Items(1)
mediatereturntowateroperationis
oteexistenceof fueloroilfumes
gefromthevariousunits.
e,operatebilgepumpcontrolstore-
ompartment.
dout withfreshwaterifpossible.All
partiallyfilledwithcleanwaterandthen
pingsystem.
oseallwheels.See thattheyare
rspringsandreport ifhosehasbeen
eration.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 64/401
CEANDINSPECTION
esfrom axlesandpillowblocksand
ateroperation.
ethattires areingoodconditionand
peration.
yotherforeignmatterwhichmay
ndwaterpropeller,shafting,rudder,ex-
orunderstructure.
alsat eachendofpropellershaft
uldbereplacedifdamagedin anyway.
andmounting.Lubricatewaterpro-
eroperation,andunlessimmediate
santicipated,it isrecommendedthata
bedrainedfromaxle housingsandcare-
nepossibilityofwaterhavingentered
all lubricantshouldbedrainedfromaxles
and refilledwithproperlubricant.
ichareaccessiblefromexteriorof
VI,"Lubrication".)
ANDOPERATION
larlyimportantaftereitherland or
atthistimethedriver inspectsandtests
tofind anydefectsthatmayhavedevel-
peration.Thedrivershouldcorrectany
rtthosethathe cannothandle.Thesein-
bletothoseitemizedunder"Pre-Starting
ouldbemorethorough.Inspectionopera-
pwith necessarymaintenanceorservice
eshouldneverbeentirelyomittedevenin
sbutmaybereducedtothebare funda-
rformingtheseoperations,drivershould
nyirregularitiesnoticedduringtheday's
t—BeforeStoppingEngine
etshouldkeeplever inappliedposi-
d.
oothlyandinvestigateanyunusual
edduringoperation.
ureis normal.
rmal.
noexcessivedischargeorcharge.
0 atidlingspeed.
ountoffuelrequiredto refilltankand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 65/401
ON,6x6
notethe presenceofexcessivefumes
sintheexhaustsystem,fueland oillines
veenginevibration.
veloosenessorrubbing offanbelt
trollinkage.
gandconnections.Allconnections
ry.
esandreportleaks.
gineaccessoriessuchasstarter,gen-
eter,etc.
ndreplenishwaterifneeded.Remove
gerofescapingsteampressure.Ifconsid-
replenishsystem,lookforleaksinradia-
nnections.
ndconditionof theoil.
ureterair cleanerandcrankcase
ughoiltodetectdirt. Ifcleanersaredirty,
ctions.
removefloorboards.Noticeunusual
eleakageoffueloroils fromthevarious
l,cableandlinkage.
ndpowertake-offforlubricantleaks
transfercaseforlubricantleaks.
fercasefor lubricantleaks.
tpropellershaftsand ruddercontrol
xhoseis ingoodcondition.
shafthousingsealsat hull.
terpropellertransfercase,propeller
pillowblock.
aglink andtierodand steeringarms.
sinorderto determineexcessivelooseness.
ofmountingofsteeringgear,frame,
kets,etc.,toseethatattachingboltsand
Observenecessityforadding sealing
.
fromaxlehousings,steering
ggearandpillowblock.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 66/401
CEANDINSPECTION
tersuchasnails, glass,stones,or
any.missingvalvecapsandcheckforim-
mswhichmayindicatepullingofvalve
foperatingtireswhensoft.
spensionsforbrokensprings,loose
aks.Seethat springsandclipswhich
earetightand inproperposition.Report
rfromaroundexposedpropellershaft-
aljointbolts.
haftflangenuts.Reportdamagedor
rother attachingparts.
oneachbrakedrumand wheelhuband
msshouldbeapproximatelysametempera-
ataretoo hottotouchwithhandas this
ant,damagedorimproperlyadjusted
ooseormissingsheet metalpartssuch
ebeenpenetrated,looseormissing hatches,
s tightandevenlywound;ifnot,re-
vecable.Checkshearpinandsparesunder
ndswitchesifassignmentpermits
oose,tightenthem.Reportbrokenbrackets
nandfastenings.Makesurethatload
roperlysecured.
uipmentwhichhavebeen"assignedto
re ingoodconditionandproperlylocated.
ANDPREVENTIVE
ntenanceprocedureisgeneraladjust-
newhichrequirestheperformanceofad-
ectofnormalwearthroughoutthe vehicle
ceoperationsnecessary,torestorevehicle
on.Followingprocedureshouldbeper-
d.
etravel.Theamountoffree travelof
startstodisengageshouldbeapproximate-
eportdefectiveclutchaction.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 67/401
ON,6x6
sandreportexcessiveloosenessin
elinesandcheckconnections.
onofinsideof hullandbilgecompart-
ndreportdamaged,looseormissingparts.
terminalswithcleanwaterorwith
gsoda.Tightenterminalsat eachendof
ndof batterytostartingmotorcable.Re-
seahydrometerandcheckspecificgravity
trolyteisnot wellovertopofplates,add
nditionsothat distilledwatermaybe
erin battery.
neoilandoil filterasrequired.
mshieldcoverandinspectandservice
eakerpoints,andignitionhigh andlow
.Checkallwiringandconnections.
ineaircleanerand crankcaseventila-
ofallunits withinthehull.Thisshould
neratorcarbureter,engine,powertake-off,
se,axletransfercase,propellershaftuni-
tirepump,etc.
pumpdrivebelt andcentrifugaltype
rviceasrequired.
hullforoiland fuelleaks.Ifleakage
ondition.
omtransmission,transfercasesand
cantis atthecorrectlevel.Serviceas
eplugs.
ewithplenty ofclean,freshwater.
variouscompartmentsandobserveaction
operation.
onandinspectconditionofwinch,cable
chlubrication.
equipmentwhichhavebeenassigned
or,ingoodcondition,andproperlyinstalled
isshouldincludehandtools,pioneer tools,
kits,sandanchor,towchain,etc.
ndattachingparts.Examinehatch
port thosefounddefective.
malldrive axlesancffromsteering
cantisat correctlevel.Serviceasrequired.
nexperiencedduringprecedingweek,itis
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 68/401
CEANDINSPECTION
lquantityoflubricantbedrainedfrom
becarefullyexaminedtodeterminepossible
ound,unitshould bedrained,flushed,and
nt.Besureto replaceplugs.
tsusedfor attachmentofchassis
ssingboltsarefound,these pointsshould
gcompoundbeforetighteningorreplac-
dwheelnuts.
deofvehicle.
pressure.
ectionsofhull andreportlooseor
swhichrequirewelding.
rlinkageandmounting.Checkfor
kabsorbers.
alsat eachendofpropellershafthous-
tsif damagedordefective.Tightenseal
ringsuspensionsuchasshackles,
etc.
nggeardraglinkandtie rodconnec-
looseness.
adjustment.
shaftflangenuts.
NPREVENTIVEMAINTENANCE
nintervalis toperformlubrication
ceservicesthatwilloffsetnormalwearand
whichmayinterferewithdependableoper-
months.Drivershouldaccompanyvehicle
enpossibleor provideasuitablereportof
ons.
gecanbeestablishedforthisinterval
edoutnecessityofestablishingspecific
erationsitemizedinotherinspectioninter-
edinamoredetailedand thoroughmanner,
tenanceorserviceoperations.
TIONANDPREVENTIVE
nintervalis toprovideanopportunity
rrebuildofmajorunits whichmayprove
etobenecessary.Operationsatthisinter-
e detailedandthoroughmanner,theoper-
accomplishedattheweeklyandmonthly
tablishedmileageintervalmaybesetupin
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 69/401
ON,6x6
afterserviceperformancehasproven
andpreventivemaintenanceinterval
makevariousseasonableadjustmentsif
yzingtheserviceperformanceofvehicle
hs.
ERATURECHANGES
oBelowFreezing
ngsystem.
eas requiredduringoperation.
dforclimaticandoperatingconditions.
gedRememberthatata gravitylow-
freezeat2° F.
uelsystem.
utionstoseethatengineis operatedat
ature.
soline.
dheatcontrolvalveandadjustcar-
AboveFreezing
omcoolingsystemandflushthesys-
forclimate.
dheatcontrolvalveandcarbureter.
Stop vehiclefrequentlyandinspect
ngon bottomofvehiclewillinterferewith
dshield.
fromcontrolswhenparkingvehicle.
whenparking.Donotparkin water
FORLONG-TERMSTORAGE
esmustbeplacedinstoragefor along
antthatprecautionsbetakentomake
ingoodconditionforoperationwhenre-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 70/401
orlubricatedbyordnance
4
nstructionsforTruck,Amphibian,21/2-
hedforthe informationandguidance
rsedeallpreviousinstructions.Materiel
rdancewiththelatestinstructionscon-
lsand/orOrdnanceFieldServiceBulletins.
orallpointstobe servicedbytheusing
ricationGuidewhichspecifiesthetypesof
eintervalsatwhichthey aretobeapplied.
nstructionscontainthesameinformation
whichdata isreproducedare10x15 in.
epartoftheaccessoryequipmentofeach
ntainedinthelubricationguidesis taken
nusingtroops.
EDANDORLUBRICATEDBY
EPERSONNEL
g.Every5,000miles,removestarter
aringthroughoilerwithOIL,engine,
RDS
structionsarecloselyfollowed,
dsatisfactoryresultsarenotobtained,a
ordnanceofficerresponsibleforthemain-
cordoflubricationservicingwillbe
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 71/401
TON,6x6
ULL
GO5
ntCGVi
)WRS
GVi
GOVi
GO5
CGVi
)WR5
R5
GOS
)WRS
ed
Pointi
ted
ws.
ULL
n.
r,
INE
iversal
pose
rpose
UID,
lic
)
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 72/401
«j
WP
fore
)
cedfrom
isespecified.
ecups)
transfer
n
ng
ECK
g
ngs
epointsafter
rCO— GREASE,generalpurpose
e
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 73/401
TON,6x6
DLUBRICANTSTOBEUSED
90
dServiceInstructions
ts
applyinglubricant.Lubricateuntil
mthebearing,unlessotherwisespeci-
ntsanduniversaljointsassoon after
e.Also,alwayslubricatechassispoints
refornormalservice.Forextremecon-
d,mud,snow,roughroads,dust,etc.,
. ormoreifconditionswarrant.
aircleaner.Daily,checkleveland
evelwithOIL,engine,crankcase
miles,dependingonoperatingcondi-
.Every2,000miles,also removeair
Crankcasebreather.Every1,000
ry,removecrankcasebreather,clean
crankcasegrade.Powercylinderair
s,oroftenerifnecessary,removecyl-
ashfilterelementin SOLVENT,dry-
e,seasonalgrade,andreassemble.
cleanersisessentialtoprolonged
ywhenengineishot.Refillto FULL
eafewminutesand recheckoillevel.
ged,oneadditionalquartwillbe
hedthroughplug holeinbottomof
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 74/401
essuregaugeindicatesoiliscirculat-
0miles,drainfilterthroughdrain
move,inspectandinstallnewelement
miles,orlessif oilbecomesdirty,in-
newingelement,refillcrankcaseto
engineafewminutesand recheck
hecklevelwithtruckonlevelground
canttocorrectlevel;alsomakevisual
reportleakagetoordnancemain-
ubricantindifferentialstolevelof
tedonfrontand bothrearaxles
aflexible hose,toinsideofhull.Make
.Drain,flush andrefillatendof first
ndicatedatpointson chart.When
lyafteroperation.Plugholesare
hrough whichdrainplugsfortrans-
maybereached.
ALJOINTS.Removeplugattop,
tinguntillubricantis visibleattop
ntandrear).Removewheel,clean
Tocleanandpackwheelbearings
movedfromthehub.Followthe pro-
omthehub andwashthemin
tilallthe oldlubricantisremoved
eof cage.
andwashtheinsideof thehub
ng.
oughlydry,packtheraces with
No.2,andreassembleinhub.To
ngitisnecessaryto kneadlubricant
geandinnerrace.Do notapplyany
hehub.Thelubricantpackedinthe
oprovidelubricationuntilthe next
mayresultinleakageofthe lubricant
tenadjustingnutuntil wheel
wheelturnsfreelywithoutside
toposition.
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 75/401
ON,6x6
earaxleisfull-floatingtypeand
dtoadjust wheelbearings.
gestudnuts whichholdaxle,
andretainer.
hichholdbearings.
s,usingsameprocedureasfor
e.
ghteninnerlocknut untilwheel
,or sufficientlytopermitwheelto
y.
ut,tightenandtestadjustment.
singandmakefinaltestfor ad-
stbeused afteraxlehasbeendis-
orrepair.CAUTION:Studnutsused
bmustnotbe lubricated.
DSLIPJOINTS.ApplyGREASE,
lgrade,tojointuntilit overflowsat
ntuntillubricantisforcedfromend
ip jointsusedonwinchdriveshaft
s.Usehand guntopreventdamageto
e andforwardrearaxle,theuniver-
rgewater-tighttubesandarecovered
erejointsare connectedtoaxle
movedtolubricatethesejointsand
allowsurpluslubricanttoremainon
ows.
NTERBEARING.Mountedontop
achedfromunder hull.Lubricate
ofunitwithLUBRICANT,gear,uni-
evelofplugon sideofunit.
SHAFTBEARINGS.Every5,000
crossshaftseatsand bearings,clean
EASE,generalpurposeNo.2.
ery5,000miles,removeplugsontop
dlubricatewithaboutoneteaspoonful
wdays,removedrainplugtodrain
eelementasnecessaryandwashin
aution:Donotdraininto hull.
500milesrefillgreasecupwith
No.2,turncuponefull turn.Apply
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 76/401
nkcasegradetowickunderrotor.
withGREASE,generalpurpose,sea-
breakerarmpivotwithOIL,engine,
y.
INGS.Every500miles,paintsides
ht.
y500miles,lubricatesparkandthrot-
surfaceof winchjawclutch,rudder
dercontrolrodends,pintlehook,all
s,latches,etc.,withOIL,engine,crank-
OPERIODICLUBRICATIONSERV-
erator,clutchpilotbearing,clutch
aftsplines,steeringcolumnupper
allstud,winchdriveshaft support
shaftdrivecenterbearing,shockab-
ff.
TROL.Every500miles,apply
ointakemanifoldgatevalve,topre-
Every5,000milespackwithwater
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 77/401
0
es53
mustbekeptof eachmotorvehicle
epartment.ForthispurposetheOrdnance
7255),generallycalled"LogBook,"is
ndmustaccompanyitatall times.This
erecordofthevehiclefromwhichvaluable
perationandmaintenancecosts,etc.,is
commandersmustinsistthatcorrecten-
ll habituallybekeptina canvascoverto
soiled.
epagebearingarecordofassignment
entering thecombatzone.Allotherref-
tedregardingtheidentityofthe organiza-
hesourcesofgreaterwearto ave-
dgritareallowedto accumulate,particles
obearingsurfaces,causingunnecessary
s notremedied,willsooncauseserious
enginepartsoranyotherunit,in making
,orif,inthe courseofinspection,working
reto beexposed,alldirtand gritthat
xposedsurfacesmustfirstbecarefully
eclean,andcaremustalwaysbe takento
ofbrushingdirt orgritintothe opening
artoftheclothing.Tocutoil-soakeddirt
oad oil,usedrycleaningsolventapplied
brush.Careshouldbetakento keep
asit mightinterferewithproperignition
nformationoncleaningisincludedin
omecloggedshouldbeopenedwitha
neverbeused forthispurpose,assplinters
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 78/401
permanentlyclogthepassages.Particular
anand decontaminatevehiclesthathave
ck.SeeSectionX,DECONTAMINATION,
n.
ntedbeforeissuetothe usingarms
ncecoatsperyearwill ordinarilybeample
wexceptionsthismaterialwillbe painted
olivedrab,lusterless.Theenamelmaybe
ng oilenamelandoilpaint previously
epartmentiftheold coatisinsatisfactory
suallyissued readyforuseandare
They maybebrushedonsatisfactorily
eoriginal packageconsistencyorwhen
y volumewithTHINNER.Theenamel
enthinnedwith15%byvolumeof THIN-
e usedasathinner sinceitwillimparta
namel).Ifsyrayed,itdrieshard enough
urand drieshardin16 hours.
npaintingiscontainedinTM9-850.
NTING
materialisin poorcondition,itismore
aintfromthesurfacethantouse sanding
terstripping,itwillthenbe necessaryto
tic,shouldbeusedonwoodas abase
Itmaybeappliedeither bybrushingor
actorilyasreceivedor aftertheaddition
olumeofTHINNER.Itwillbe dryenough
dhardin5 to7hours.Forspraying,it may
an 15%byvolumeofTHINNER.Lac-
tothePRIMER,ground,synthetic,within
nhibiting,forbaremetal,shouldbe
oat.Itsuseandapplicationaresimilar to
(b)above.
paintingdependspartlyontheselection
olargelyuponthecareusedi npreparing
g.All partstobepaintedshouldbe free
osene,oil,andalkaliand mustbedry.
FACES
dofcleaning,theyshouldbe washedin
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 79/401
ON,6x6
of1/2 poundofSODAASHin8 quartsof
entsolution,thenrinsedin clearwater
Woodpartsinneed ofcleaningshouldbe
er,butthe alkalinesolutionmustnotbeleft
nutesandthesurfacesshouldbewiped
shedclean.Whenartilleryorautomotive
onand onlymarredinspots,thebad places
AMEL,synthetic,olivedrab,lusterless
wholesurfacewill thenbesandpapered
a finishcoatofENAMEL,synthetic,
edandallowedtodry thoroughlybeforethe
uipmentisinbadcondition,all partsshould
PAPER,flintNo.2,or equivalent,givena
ynthetic,andpermittedtodryforat
en besandpaperedwithPAPER,flintNo.
d dirt,andfinalcoatofENAMEL,syn-
ssappliedandallowedtodry thoroughly
.
AGE
jorconsiderationinpaintingOrdnance
tionsecondary.Thecamouflageplanat
threefactors:color,gloss,andstenciling.
ENAMEL,synthetic,olivedrab,lus-
toblendinreasonablywellwith the
makesavehicledifficulttosee from
reatdistancesoverland.Avehicle
sypaintcanbedetectedmoreeasily
vehicleshavebeeneliminatedbecause
fromtheair.A bluedrabstencil
cannotbeso photographed.Itisilleg-
sexceeding75feet.
e
bbingmustbe avoided,asitwill
oduceagloss.Careshouldbe takentosee
lywith aspongeorasoft rag.Thesurface
wiped,exceptwhilewet,or aglosswill
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 80/401
vehicles,paintedwithlusterless
svehicleswerekept whenglossypaintwas
stincreasesthe camouflagevalue.Grease
withSOLVENT,drycleaning.Whatever
be soremovedshouldbeallowedtoremain.
ax-treatedtarpaulinsonthesides
cea gloss,whichshouldberemovedwith
intingwitholive drabpaintwillbe
thbluedrabpainttwiceyearly.
s,thepaintmaybecomesothickas to
es,presentinganunsightlyappearance.If
eold paintbyuseof alime-and-lyesolu-
ails)orREMOVER,paintandvarnish.It
ceoflye orotherpaintremoverbecom-
he equipmentbeperfectlydrybeforere-
preferablethattheuseoflye solutionsbe
ts.Ifusedon wood,thelyesolutionmust
n thesurfaceformorethana minutebe-
edoffandthe surfacewipedwithrags.
shouldbefilled withputtyandthewood
shing.Thesurfacesthuspreparedshould
ections.
edbeforepaintingproceduresare
NGDEVICES
oilholes,and similarlubricatingde-
boutthree-fourthsofaninchindiameterat
llbepainted withENAMEL,red,water
maybereadilylocated.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 81/401
nt57
re
h(1)
(1)
(1)
(1)
(1)
ent:
m)
o)
(1)
(1)
(1)
A)(1)
ut(1)
arestowedonthe deckofhull:
e Shovels(2)PickMattock(1)
rriedinside vehicleandfastenedin
ablespaces:
atch
in(1)
hose)
UIPMENT
vewateroperationoftoolsand equip-
willbe subjectedtowater,shouldbethor-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 82/401
leaned,assaltwaterhasa deteriorating
pmentmountedinandonthis vehicle
dition,astheyarevitalto thesuccessful
cle.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 83/401
omotivematerial61
RES
stantdangerofgasattack,unpainted
coatedwithengineoil.Instrumentsare
tobeprotectedby oilfromchemicalclouds
munitionisexcluded.Carewillbetaken
theopticalpartsofinstrumentsor leather
notinuse willbeprotectedwithcovers
tionwillbe keptinsealedcontainer.
acticallynoprotectionagainstmus-
rand oilcloth,forexample,willbepen-
The longertheperiodduringwhichthey
hedangerof wearingthesearticles.Rub-
contaminatedwithmustardgasmayoffer
o wearthemseveraldaysafterthebom-
clothingwillresistpenetrationmorethan
ewornlongerthanthis.
sof materialthathavebeenexposed
andlewisitemust becleanedassoonas
rycleaning,orALCOHOL,andwipeddry.
oatedwithengineoil.
beenexposedtogasmustbe thor-
anbefired.To cleanammunitionuse
noncorrosive,orifthisis notavailable,
r.Aftercleaning,wipeallammunitiondry
drypowderedAGENT,decontaminating
decontaminatingcertaintypesofmate-
nsupplies),asflamingoccursthroughthe
iquidmustard.
chemicals(mustard,lewisite,etc.)
gstepsshouldbetaken:
onsacompletesuitofimpermeable
maskwill beworn.Immediatelyafterre-
ughbathwithsoapandwater(preferably
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 84/401
skinareashavecomeincontactwith
alldrop ofmustardgetsintotheeye,or
sbeeninhaled,itis imperativethatcom-
given within20to30 minutesafterex-
nsaregivenin TM9-850andFM21-40.
mustardwillbe decontaminated.Ifthe
sbeenexposedtovaporonly,itmaybe de-
intheopenair;preferablyin sunlight,for
e cleanedbysteamingfortwohours.Ifthe
sbeencontaminatedwithliquidmustard,
ourswillberequired.Variouskindsof
mprovisedfrommaterialsavailableinthe
materialofdirtthroughthe useof
ustbeburnedorburied immediatelyafter
terialiscoatedwithgreaseor heavy
dberemovedbeforedecontaminationis
ning,orotheravailablesolventsforoil
attachedtoendsofsticks.
ntedsurfacesofthematerialwith
ymixingonepartAGENT,decontami-
ithonepart water.Thissolutionshould
es.Washoffthoroughlywithwater,then
tsand instrumentsexposedtomus-
econtaminatedwithAGENT,decontam-
xedonepartsolidtofifteenpartssolvent
RIDE).Ifthisisnotavailable,use
achingsolutionmustnotbeused,because
rumentlensesmaybecleanedonlywith
smallamountof alcohol,ethyl.Coatall
engineoil.
econtaminating(chlorideoflime)is
ybetemporarilycleanedwithlargeyol-
er,mustardlyinginjoints orinleatheror
ovedbythisprocedureandwill remaina
untilthematerialcanbe properlydecon-
shedfrommaterialinthismannerlies
necessitatingthatthecontaminatedarea
rningsignsbeforeabandonment.
aminatingofmaterialcontaminated
niccompoundsintothesoil,poisoning
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 85/401
ON,6x6
localityfor eithermenoranimals.
bingthathasbeen contaminated
ghlywithbleachingsolution.Intheevent
nt,itmaybe necessarytoburnorbury
ndecontaminationiscontainedin
C38, 1941,Decontamination.
SFORAUTOMOTIVEMATERIAL
ensubjectedtogasattackwiththe en-
ershouldbe servicedbyremovingthe
Tdrycleaning,andrefillingwiththe
dbecleanedin thesamemanneras
hionswillbediscarded.
entsthoroughlywithbleachingsolu-
edonein thefield.Operatorsshouldcon-
enrunningunderconditionsofhightem-
ationofthemustardor lewisite.
cleswillbedecontaminatedwith
ntingmaybenecessaryafterthisoperation.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 86/401
UCTIONS.
NMAINTENANCE
erations62
eterms63
eoperations64
65
6
NCEOPERATIONS
operationsbyvehiclecrewsandmain-
gArmsaredeterminedbyeasewithwhich
ed,amountoftimeavailable,weathercon-
elter,proximityofhostilefire,equipment,
personnel.Sinceall thesefactorsare
ofprocedurecanbeprescribedorfollowed.
onswithinscopeofUsingArmsmain-
arilybasedontwofactors:(1)sufficient
litiesnecessarytodojob.Absenceofany
sarilyplacesmaintenanceoperationinthe
ENANCETERMS
cetermsusedinsucceeding"Alloca-
ations"tableareasfollows:
aning,lubricating,tighteningbolts
rnaladjustmentsofsub-assembliesoras-
movingpart,sub-assemblyorassem-
cingitwith aneworreconditionedorre-
orassembly,whicheverthecasemaybe.
ingrepairsto,or replacingofthe
emblythatcanbeaccomplishedwithout
gthesub-assemblyorassemblyanddoes
orriveting,fittingand/oraligning.
mpletelyreconditioningandplacingin
unserviceablepart,sub-assembly,orassem-
ludingwelding,riveting,machining,fit-
,andtesting.
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 87/401
ON,6x6
onnelisauthorizedto removeandreinstall
ine,transmissionor transfercaseassem-
mentoffrontandrearaxles,anengine,
seassemblywithanotherfrontorrear
nortransfercaseassembly,mustnotbe
authorizationis receivedfromOrdnance
TENANCEOPERATIONS
tesoperationsallocatedtoUsingArms
peration
place
Replace
andInspection(SectionV)
ghtenBolts,Etc.
on
ctionVII)
eaningandPainting
tionVIII)
Replace
Replace
eplace
onXIII)
bly
ndReplace
k
Adjust
nXIV)
bly
ndReplace
mbly
ndReplace
V)
rvice
eandReplace
erviceandReplace
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 88/401
NMAINTENANCE
peration
yServiceandReplace
ceandReplace
rviceandReplace
esServiceandReplace
viceandReplace
ceandReplace
andReplace
ServiceandReplace
VII)
ush
ace
Replace
SectionXVIII)
nd
dReplace
gMotorandBattery(SectionXIX)
ce
erviceandReplace
System(SectionXX)
iceandReplace
eplace
esServiceandReplace
torandControl(SectionXXI)
place
g(SectionXXII)
mblyServiceandReplace
sembly...'ServiceandReplace
sembliesServiceandReplace
Tail
andReplace
place
sories(SectionXXIII)
nitsServiceandReplace
dReplace
ndReplace
echanismServiceandReplace
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 89/401
ON,6x6
peration
e
ce
temServiceandReplace
XXV)
eandReplace
viceandReplace
II)
place
lace
place
eplace
lace
place
SectionXXVIII)
yServiceandReplace
semblyServiceandReplace
rolServiceandReplace
and
place
viceandReplace
viceandReplace
SectionXXIX)
yServiceandReplace
fts(SectionXXX)
sServiceandReplace
ceandReplace
kAssy.ServiceandReplace
SectionXXXI)
sServiceand Replace
Replace
dReplace
ngService
oxServiceandReplace
nXXXII)
embliesServiceandReplace
andReplace
rviceandReplace
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 90/401
NMAINTENANCE
peration
XXXIII)
erviceandReplace
ceandReplace
XXIV)
ServiceandReplace
e(SectionXXXV)
ndReplace
XVI)
ndReplace
ndTires(SectionXXXVII)
ce
eandReplace
Replace
ndReplace
dReplace
eandReplace
SSIBILITY
is vehiclenecessarilyconcealsoperat-
eof thissectionistodesignateaccessi-
s,andtoexplainoperationsnecessaryto
ehicleunitswhichrequireservicingor
ytableandoperationsdonotincludeparts
yaccessibleandarenotconcealedbeyond
ractice.
allylistsconcealedunits,withaccessi-
eferencetooperations(Para.66)re-
ts.
ATIONS
o hold-downboltssoboltscanbedis-
ps.
wardedgeto open.
more thanhingespermit.
atchCover.Ifaccessgreaterthan
d,completebowdeckcanberemovedby
edgesanddisconnectingradiatorsupports
rtment.However,thisprocedureisnot
tcanber emovedthroughenginecompart-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 91/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 92/401
NMAINTEI
erShaftFront
tThrust
ose
ection
ctions
PipesConn.Hoses
ndHose
dHose
trainer
andHose
ype)
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 93/401
ON,6x6
ForwardRearAxleJ66-f
RearwardRearAxleJ66-f
WaterPropellerFrontG 66-e
WaterPropellerFront'J 66-f
WaterPropellerCenterO66-f
siontoWaterPropellerTransfer
pellerTransferCasetoMain
ovePlugonBulkhead)A66-a
ntingsB66-b
ndDrainB66-b
SuppressionUnitsB66-b
ideA66-a
kageandCablesQ66-g
66-k
op.ShaftHousing(Front)J66-f
tHousing(Rear)G66-e
Prop.ShaftHousing(Front)J66-f
andAdapter(AtMainTransfer
t(ForwardEnd)C66-c
t(RearEnd)..' G66-e
kageD66-d
CableB66-b
-g
lerShaftO66-f
ockF 66-e
ValveandLinesC, F66-c,e
e'...."C,D,G66-c,d,
Take-off)C66-c
tmentD66-d
R66-j
ain(ForwardEnd)D,E66-d,c
ain(RearEnd)G66-e
lerPlugs,WaterPropellerG 66-e
Main,RemoveAccessPlugin
ainG-66-e
tSideandTop)G 66-e
SideandTop)J 66-f
eller(FrontSide)D66-d
eller(RearSide)G66-e
emoveAccessPluginHullBottom.66-1
6-c
66-d
6-c
(Center)O66-f
(Forward)J66-f
(Rear)O66-f
ontJoint'C 66-c
earJointJ 66-f
DriveShaftFrontJointJ 66-f
DriveShaftRearJointO66-f
BoltQ66-g
ontJointO 66-f
arJointand StopCollarQ66-g
earPinQ 66-s
DriveShaftFrontJointO66-f
DriveShaftRearJointO66-f P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 94/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 95/401
ON,6x6
capfromfiller neckanddisconnect
weenfillerneckandstern deckplate
emovefromfillerneck.
wcompletelyloosenedandmaybelifted
eckatleftend andremovedfromvehicle.
hCover
-downboltso boltcanbedisengaged
ht edgetoopen.
more thanhingespermit.
sCover.,Accesscoverisprovidedto
per endofruddershaft.Thisis necessary
movedin anemergencyorforreplace-
ingcovertosterndeckplateandre-
ugsareprovidedinbottonrofhullbe-
nplug,transmissiondrainplugandmain
henaccessplugsareremoved,drainplugs
tsdrained.
nscrewaccessplugbeneathunitto
surethatplugis tightenedsecurely
l.Usewaterproofgreaseonplug threads.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 96/401
ALTOOLS
pecialtoolsemployedinthe maintenance
slisted,ortheir equivalent,arerecommended.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 97/401
ON,6x6
riverHandle
ndWaterSealDriver
ngNutWrench
terBearingRaceTool
erBearingRaceReplacer
dWaterSealDriver
ator
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 98/401
RTSANDACCESSORIES
8
EPARTS
arepartsissuppliedto theUsingArms
osepartsmostlikely tobecomebroken,
ceable.Thesetiskeptcompletebyrequisi-
used.Organizationspareparts arelisted
repartsis coveredinthesectionof
andPreservation."
lsandequipmentrequiredforsuchdis-
ngastheUsingArmsis authorizedto-per-
andpreservationofthe guncarriage,
uipment,ammunition,etc.Theyalsoin-
rolls,andotheritemsnecessarytoprotect
inuse,or whentraveling.Accessories
posesotherthanasprescribed,andwhen
erlys.tored.
accessorieswhosenamesorgeneral
eiruse.Others,embodyingspecialfeatures
escribedbelow:
e inemergency—stowedonright-
auxiliarypowertake-off.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 99/401
andinspection73
cement75
ntassemblyreplacement76
eplacement77
emblyreplacement78
duction,spiralbeveleddrivingunitwith
universaljointsoneachshaft atthesteer-
yismountedonsemi-ellipticsprings.
mmaintransfercaseto frontaxleby
losedinmetalhousing.Housingis at-
geandrubberbellowstype sealsareused
sprovidedincabto permitdrivertoen-
ontaxleat maintransfercase.Detailedin-
xleengagementanddisengagementare
ration"sectionofthisbook.
al noiseisthefirst indicationofim-
drivingunits.Sincethedifferentialand
amein bothfrontandrearaxlesthe in-
venunder"Trouble-Shooting"inPara.82,
ytothefrontaxle andisnotrepeatedin
ignment,conditionofhousing,andcon-
ssemblieshavemajoreffectsonsteering
eseconditionsaregenerallyapplicableonly
d operation.Themostcommondifficulties,
bleremediesaregivenin thefollowing
auseProbableRemedyParagraph
ead-
t255
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 100/401
auseProbableRemedyParagraph
ectCorrectmountingor
pring245
bent
Replacecompleteaxle
utof
gs....284
e
y.Inflatetoproperpres-
un-Installtireshaving
0
al.Adjustwheelbear-
owor Inflatetoproperpres-
sem-
sBalanceorreplaceas-
nc-
eplace249
ciallyTightenspringU-
ts,replacesprings,
sem-
rworn.Adjustor replaceas
atetocorrectpres-
bricatetierod
ighten boltsorre-
-placespringsasfound
necessary.245
tas-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 101/401
ON,6x6
auseProbableRemedyParagraph
entin-
ear.255
rect.Inspectallwheel
y.Inflatetocorrectpres-
NANCEANDINSPECTION
ntenanceandinspectionoperationsas
ventiveMaintenanceandInspection,"
ttheintervalsindicated.Regularinspection
entialtoobtainmaximumservice.This
orfrontwheelalignment.
unitis important,particularlyafter
ceshouldbemadetoSectionVI,"Lubrica-
ubricationintervals,andmethodof
rentialcarrier.
nofthefrontaxleunit, consideration
gnmentunits suchasbrakes,steering
serelatedunitswill affectfrontaxle
MENT
asamajoreffecton steeringfrom
easeofsteeringand safety.Frontwheel
orcauseof prematureanduneventire
dinfrontwheelalignment,whichapplyto
smanual,arecaster,camber,toe-inand
nofthecenter-linethroughupperand
nnionstowardsrearofvehicle,andis
ension"L"inFig.44).The correctcaster
2to2degrees.Thereis noadjustmentfor
tedeterminationofcasteranglerequires
suchasshownin Fig.45,forexample.
umentmanufacturerinmakingmeasure-
oundtobe lessthan11/2degreesor
probablytheresultof loose,saggingor
e housing.Inspectspringsand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 102/401
002
ineofTie-Rod
nches)
o TopofAxle
ADJUSTINGSCREWS
rmBall toOut-
gnmentChart
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 103/401
ON,6x6
re46—CheckingFigure47—Checking
-In
pringsas necessary.Ifspringsandspring
completeaxleassemblyshouldbereplaced.
nclinationof thefrontwheels.Posi-
inationofwheelsasviewedfromfront of
arefartherapart atthetopthan atthe
inus"G"inFig.44).Negativecamberis
lsasviewedfromfrontof vehicle.Correct
eelsonthis vehicleis1/2° to1° positive
adposition.Thereis noadjustmentfor
erminationofthewheelcamberanglere-
ments(seeFig.46 forexample).Follow
'sinstructionsintakingmeasurement.
ooseknuckletrunnionbearings,bent
xlehousingwillaffectwheelcamber.If
bergreaterthan1° orlessthan1/2°,inspect
replaceasrequired.Incorrectcambermay
evenorexcessivetirewear.Unequalcam-
ullto oneside.
ywhichfrontwheelsarecloserto-
therear(dimensions"A"minus"B"in
hisvehicleis 0"tofa"measuredatwheel
redatcentersoftiretread.Anadjust-
etwosteeringknuckles,isusedtoadjust
ugedesignedforthe purposeshouldbe
toe-inmeasurement,followinginstrument
ns.(SeeFig.47.)Loosewheelbearings,
knucklesupport,damagedwheels,bent
ehousingorabent orimproperlyadjusted
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 104/401
oe-inis foundtobeincorrectadjust
edinPara.284or replacewheelsifdam-
rodtocorrecttoe-in.Alwayscheckcastor
djustingtie-rod.Thetie-rodhasfiner
eft-handendthanonrightend (12per
entatbothendsoftie-rod,a finedegreeof
made.
edure
pressure(40Ibs.)andplacevehicleon
frontwheelsinstraight-aheadposition.
dtie-rodboltfromeach steeringknuckle
tie-rodyokefromsteeringknucklesupports.
eyfromeachtie-rodyoke.Screwyokesonto
dtocorrecttoe-in.Toe-inwillbeincreased
t-handyoke(coarsethreads)oneturn
ing left-handyoke(finethreads)one
eversingthisprocesswill decreasetoe-in
onnecttie-rodtoeachsteering
rodboltinplace.Itis notnecessaryto.re-
menthasbeen made.Measuretoe-inand
ry,untiltoe-inisbetween0" and1y
.Whenfinaladjustmentiscomplete,in-
t nutsuntiltheyaresnug, thenbackoff
ewcotterpins.
odyokeclampwithholeinkeyaligned
sertclampbolt (twoateachyoke)and
ngnewlockwashers.Lubricatetie-rod
cationchartfor thisvehicle.
emaximumanglethroughwhich
mthestraight-aheadposition.Thisangle
heelthantheoutsidewheelon aturn.The
wheelis 28° to29° (dimension"C"in
heoutsidewheelis24°-15' to25°-6'(di-
opscrewson axlehousingareprovidedfor
e throughwhichtheinsidewheelcan
entProcedure
eleft position.Adjuststopscrewuntil
wheelinaccordancewith"Specifications."
gleinstrumenttoobtaincorrectangle,
ufacturer'sinstructions.
givingcorrectreadingforangle
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 105/401
TON,6x6
gle"D"forright wheel.Ifthisangleis
willbeincorrect.Bent,looseor twisted
dition.
pscrewtohousingwhen angleisset
t-handwheelby turningwheelsto
ngoperationsgivenforleft-handturning
LYREPLACEMENT
yberemovedasa completeunitby
f vehicleonblocks,removingfender
onnectingbrakeconnections,shockab-
glink,axlepropellershaft,and springs
ndwheels
chingeachfenderskirttohull and
ollyjackunderfront axledifferen-
axlehighenoughtopermitre-
frontwheels.
ehicleonblocks
ckoffront axle,placingblocksin
upportentire frontendweight
etohull.Blocksmustbehigh
walofaxleassemblyondollyjack.
owerjackuntil hullrestsonblocks
ck.Disconnectbrakeconnectionsat
givenin Para.102mustbefollowed
orbersanddraglink
hinglowerendofshockabsorber
umperblockandremovetaperedpin.
llstudin steeringarmatleft-hand
lstuduntil topofnutis beyond
ut toloosentaperedstudfromarm,
vestudfromarm.
lershafthousingandshaft
sataxleendofhousingfromdiffer-
nPara.225. Disconnectpropeller
instructedinPara.226.
tsateachspring andremove"U"
ackandwithdrawfromunderneath
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 106/401
osprings
assemblyondollyjackandmoveinto
seassemblyintopositionagainst
ngcenterboltheadsenter holesin
ing"U" bolts,springbumperplate
oltandplate.Tighten"U" boltnuts.
ersandbrakelines
ughlower endofshockabsorber
allnutonpin,and tightennutateach
brakeflexibletubingathullconnec-
sin accordancewithinstructionsin
tandpropellershaft housing
l studinsteeringarmat leftend
dtightensecurely.Locknutinplace
hpropellershaftataxle drivepinion
Attachhousingandseal ataxledif-
edinPara.225.
ion
ganduniversaljoints.Addorre-
inaccordancewithlubrication
nment
mentfactorsinaccordancewith
thissection.
VERSALJOINTASSEMBLY
ointassembliesmaybe removed
teaxleassemblyfromvehicle.However,it
eel,hub,brakeshoesandanchorplate
acer,hubinneroildeflector,brakedust
e.NotifyOrdnancePersonnel.
EARINGREPLACEMENT
tmentofsteeringknuckletrunnion
ofaxleshaftanduniversaljoint assem-
al(seal attachedtoinnersideofsteering
ndsteeringknuckletrunnions.
operations,inspectionshouldbemade
ringhousing.Removelubricationfitting
cant.Ifoil showspresenceofsaltwater,
eremoved,washed,andassemblythor-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 107/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 108/401
kleandUniversalJointAssembly
ofknucklesupportwithspecial
nFig. 52.
same tool.
eamto sizewithreamerKM-347.
es
ofbendingortwisting.Checkcondi-
odandin yokes.Inspectboltholes
PositionshownonFrontAxle
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 109/401
ON,6x6
nstruction
placeofanythataredamagedor
hyokeson steeringknucklesup-
andinstalltie-rodbolts.
dofRemovingandInstalling
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 110/401
n
dasinstructedinPara.74 inthis
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 111/401
andinspection83
ement84
5
6
emblyreplacement87
ralbevel,fullfloatingdriving axles
Alldrivingandbrakingloadis takenbyrub-
reebetweeneachaxleand vehicleframe.
supportedbyinvertedsemi-ellipticsprings
tsonends oftrunnioncrossshaftandwith
housings.
mmaintransfercaseto forwardrear
opellershaft.Powertorearwardrearaxle
ercasetoa pillowblockontopofforward
cetorearwardrear axlebyanotherpro-
tstoforwardrearaxle andtopillowblock
ings,hingedatone endtohullbulkhead
ypesealsateachend.
ally-thefirstevidenceofimproperfunc-
s.Occasionally,noiseswhichseemto
becausedbysome otherunit,suchas
on.Also,impropertireinflationoruneven
seofanoisewhichseemsto comefromthe
sofaxledifficultiesandprobableremediesare
paragraph.Thetableapplies,in general,
ProbableReferto
auseRemedyParagraph
dor
eck
dInflatetiresto correct
pressure(40lbs.)or
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 112/401
ause
ot
utof
-
gears
rlu-
-
yOr
ng
Axle
s
orn.
utof
-
ar
NANCEANDINSPECTION
ectionV,"PreventiveMaintenance
sindicated,shouldbeaccomplishedon
drearaxles.
detopreventivemaintenanceandin-
hpertaintootheralliedunitssuchas wheels,
tc.whenaccomplishinginspectionopera-
"Lubrication"fortypeoflubricant,
ethodsofdrainingandflushingdifferen-
YREPLACEMENT
two rearaxlesrequiressupporting
blocks,supportingaxletoberemoved
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 113/401
ON,6x6
g
,disconnectingattachingparts,moving
ngsand withdrawingsidewisefrom
gs.53and54)
icle
etrunnioncrossshaftbracketsand
allloadisremovedfromrear springs.
Thensupportaxleto beremovedon
ise jackuntilallaxleweightis
ckislocatedtopermitwithdrawal
g.
nPara.283.
xlebrakewheelcylinderflexiblecon-
esonlytoforwardrear axleremoval.
sherswhichattachpillowblockto
lehousingandsupportpillow block
ershafthousingwillnotbe damaged.
lershaft
nnectpropellershafthousingand
rentialcarrieras explainedinPara.
disconnectpropellershaftatdiffer-
226.
s
sfromthethreetorquerod endsat
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 114/401
ndforcetorquerodpins outof
ketsharplywithaheavyhammer
ngwithclawbar.(SeeFig.54 for
y
ack,moveforwardorrearward
tofbracketsonaxlehousing.Then
awaxleassemblysidewisefrom
positionundervehicle
blyondollyjackandroll intoapproxi-
e.Raiseassemblyondollyjackuntil
withbracketsontopof axlehous-
andaxleinto positionwithspring
mtorquerodendpinsand seethat
andfreefrom dirtorgrease.Con-
lebyinsertingtorquerodpins inaxle
olowerrods,forcingtorquerodand
ga heavyhammerandblockof
ockwasheroneachlowertorquerod
Install uppertorquerodina similar
shaft
ectpropellershaftandpropeller
alcarrierasexplainedin Para.226.
ectpropellershaftatdifferential
.226.
esonlytoforwardrear axleinstal-
ketattopof forwardrearaxlehous-
gnewlockwashers.Tightenscrews
bleconnectionsathullconnection
nstructionsgiveninParas.93and
movejacks
dinPara.283.
wardrearaxleandremove.Lower
nnionbracketsandremove.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 115/401 P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 116/401
eShaft
dhubsurfacesareclean.Placea new
ftandinsert splinedendofshaftin
eddifferentialside gears.With
nstallthe eightshaftflangecap
telyuntilallare tight.Bendtangs
heads.
ARRIERASSEMBLYREPLACE-
ntialandcarrierassemblyisbeyond
nnel.RefertoOrdnancePersonnel.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 117/401
andinspection91
system93
ments94
acement95
acement96
eplacement97
ent98
cement100
acement.'101
ehosereplacement102
03
mreplacement104
gereplacement105
ON
Fig.57).Serviceorfootbrakesystem
lictypeandoperatesbrakeshoesat allsix
ystemincludebrake pedal,pedallinkage,
inders,Hydrovacunit(powercylinder,
lavecylinder),vacuumcheckvalve,
es.
akebandisexternalcontracting
operatesbrakebandatrear oftransfer
ectedwithhandbrakeleverlocatedwithin
stemconsistsofhandbrakelever,brake
brakedrum,andconnectinglinkage.
nofservicebrakesisdependentupon
s—hydraulicandvacuum.Thesetwo
edinsuchamannerthathydraulicpressure
hcontrolsvacuumandatmosphereinpower
eoperatingsystemconsistsofa master
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 118/401
erateachwheel,Hydrovacslavecylinder,
hoseorlines.Mastercylinderisoperated
onnectinglinkage.Briefly,thehydraulic
pleofpressingacolumnof fluidwithwhich
areoperatedtoforcebrakeshoes against
gsystem,consistsofaHydrovacunit(re-
ndhydraulicslavecylinder),checkvalve
gandlines.Thissystemutilizesengine
ospheretooperatepowercylinder,which
sufficienthydraulicpressurenecessary
ntofpowercylinderpistons,controlledby
forcesfluidfromhydraulicslavecylinder
chwheelcylinder.Asbrakesarereleased,
yvalvedrops,shuttingoffatmospheric
andopensbothsides ofcylinderpistonsto
eleasedbyreturnsprings.
yinghandbrake,leverlocatedatleft
everis movedrearward.Thismovement
d,locatedatrear oftransfercase,through
bydrawingbrakebandandliningassembly
.Whenbrakesarereleased,leveris moved
tanceofreturnsprings,lining isreleased
reusuallyreflectedbyoneor moreof
ablefollowing.Wheneverbrakedefects
bebornein mindthatcauseforthis condi-
misadjustmentorfailuretoproperlyservice
esto functionproperlyissometimes
bearingadjustment,loosespringclips,and
servicingbrakesystem,referto"Trouble-
closelyassociatedunitssuchaswheels,
auseProbableRemedyParagraph
reandpoorstop:
yad-
ning.ReplaceHydrovac..99
tion-
9
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 119/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 120/401
auseProbableRemedyParagraph
m.Tightenallconnec-
rlyad-
ceshoeandlin-
oning.Cleanorreplace....101
ner.Cleanorreplace.... 100
eplaceshoeandlin-
Replaceshoeand lin-
hor.95-96
eedandrefill 93
Replace102
rd
adjust94
Replaceshoeandlin-
ercyl-
csys-
93
htenorreplace
yad-
Replaceshoeand lin-
hor.95-96
hoeandlin-
aceshoeandlin-
cehuband
ceshoeandlin-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 121/401
ON,6x6
ause
action
yad-
yad-
95-96
erly
e.
hoe
.
yad-
erly
erpis-Replacewheelcylin-
Replace102
eplaceshoeandlin-
rlyad-
sys-Bleedandrefillentire
derReplacemastercylin-
ave
laceHydrovac..99
pedal pressure
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 122/401
auseProbableRemedyParagraph
yad-
rlyad-
or.Tighten95-96
ceshoeandlin-
Replaceshoeandlin-
NANCEANDINSPECTION
mal operationconditionsmaybecome
hatsatisfactorybrakeefficiencyisnot
stemisthoroughlyinspectedandtested
ortheseconditionscanusuallybe avoided.
llyapparentwhenexcessivepedalpres-
brakes,also whenlightpedalpressure
application.Alsoreferto "Trouble-
rothersymptomsandcauses.
ortantthat allvacuumlinesand
vententranceofatmosphere,otherwise
etebrakingsystemisseriouslyaffected.
whenmakingteststhatat noplaceinthe
cuumbeobtainedthanexistsin theintake
mportantthatthetest firstbemadeatthis
etheactualmanifoldvacuum.Referto
f testingformanifoldvacuum.
vel.Hydraulicfluidlevelin master
datregularintervalstodeterminethat
evelisallowedto becomelow,airmay
eormore oftheconditionsoutlinedunder
a.90b.Fluidshouldbekepttowithin
rakelinesandflexiblehose should
anyevidenceofhydraulicfluidleakage.
ctedvisuallyifadjacentpartsappearto be
owlevelofhydraulicfluidinmastercylin-
nthatsystemisleakingatsomepoint,
der,whereitis notvisible.
erbrakeshoesarenotproperlyad-
ybegeneratedatbrakedrums.Alldrums
ametemperature.However,anabnormally
sthatthebrakeson thatparticularwheel
yandmaynotbe adjustedevenlywith
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 123/401
ON,6x6
n overheatedconditionisfound,this
hthepossibilitythat thewheelbearings
ed.RefertoParas.284 and286forproper
bearings.
ment.Checkclearancebetweenmas-
stop screw.Thisdimensionshouldbe
esthatadjustmentisnecessarythiscan
dinPara.98c.(4).
t.Inspecthandbrakelinkage,brake
ngtodrum clearanceand,ifnecessary,
tedinPara.103b.
t.Checkclearancebetweenbrake
epedalshouldjust touchtoeboardinre-
kesheavilyagainsttoe boardthisindi-
maynotbefully released.Adjustas
se.Carefullyinspectvacuumline
scondition.Ifany indicationsareapparent
ouldbe replaced.Keephoseclampstight.
S
ouldbemadeto determineifhydrau-
efunctioningasacompleteunit.If either
workingproperlythecompletebraking
affectedthatproper brakeefficiencywill
ivemeasureshavebeenmade.
mLineTestProcedure
chingvacuumlinetoHydrovaccenter
gaugetoendofvacuumlineso that
t.Startengineandnotevacuum
eaksexist,will bemanifoldvacuum.
top engine.Observerateofvacuum
ethan1" every15secondsthisindi-
valveisnotseatingproperlyor that
ne oftheconnections.Inspectand
eplacevacuumvalveasdirectedin
oryresultshavebeenobtainedremove
ctvacuumlinetocenterplatetee being.
onsothatthereare noleaks.
yValveTestProcedure
es
f powercylinderandattachvacuum
atcenterplateandattachvacuum
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 124/401
betightsothatthere arenoleaksat
andnotevacuumgaugereadings.
augesshouldbesameas atmanifold
ngcannotbeobtained,itindicates
tvacuumlineconnections.
top engineandnoterateofvacuum
ethan2" every15seconds,when
alvetestsaresatisfactory,itindicates
cunitand completeunitshouldbe
kes.Vacuumgaugeatcenterplate
dvacuumwhilegaugeatrear of
zero.Stop engineandnoterateof
enterplate.If rateofvacuumdrop
econds,itindicatesthatvacuumand
orpowercylinderpistonsealsare
houldbereplaced.Removevacuum
at rearofpowercylinder.Replace
urely.
rTestProcedure
eafewapplicationsofbrakesto
hmightbepresentinHydrovacpower
Removebleederscrewatanyoneof
ydraulicpressuregaugeinbleed
onsecurely.
edapplybrakesandnotehydraulic
denotethat brakefluidispassing
ylinder,whichmakesitpossibleto
rovacfailure.Thishydraulicpres-
akemastercylinder.
sapplied
amepositionstartengineandnote
sure.Ifhydraulicpressureincreases
ndicatesthatHydrovacslavecylinder
yonapplication.
uicklyandnotedropof hydraulic
urereturns tonear"0"immediately
dervalveis functioningsatisfac-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 125/401
TON,6x6
augeattachedatwheelbleeder
wandtightensecurely.
CBRAKESYSTEM
perationsmakeitnecessarytodis-
whenanyconditionsoutlinedunder
vident,itisnecessarytobleedentirebrake
sedateachwheelcylinder,alsothreebleed
acunit.WhenbleedingHydrovac,itis
screwsbebledintheir properorder"D",
Fig.69.Twobleedingsystemsareused
ocedureofthesetwomethodsarede-
ollowing.
ssarytoaddbrakefluid,only Delco
ckheed21hydraulicfluidshouldbeused.
bberpartsto swellorotherwisedeterio-
turereplacementofall brakeunitswhere
edure
er
hinglefthanddriver'sfloorboardto
outofvehicle.Removefillercap
enusingpressuretank,No.CSM-CS-
is uptopetcockaboveoutletand
airpressurebeforestarting bleeding
ngtankhosetomastercylinderfiller
sizefitting.
Fig.58)
ckwasheratwheelcylinderorHy-
achbleedertube,No.KM-J-747,in
eoppositeendofbleedertube insuit-
ldhavesufficientfluidtocoverendof
.58)
hichshould be10to20 lbs.and
shut-offvalve.Openshut-offcock
eedervalvescrew3/4turn incounter-
atendofbleederhose.Closebleeder
bubblesstopandfluidcomesoutin
ederhoseandinstallcapscrewand
perationatallsixwheels,alsoat
emovebleederhoseattachedto
Reinstallfloorboardandattachto
dure.Manualbleedingrequiresfilling
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 126/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 127/401
TON,6x6
akesbyTurningWheelCylinderCap
ingToolInsertedthroughOpeningsin
umaswheelisturned byhand.Back
hestoprovideproperrunning clear-
andbrakedrum.Repeatforegoing
shoes onfrontaxle.
vers
versovereachadjustingholeinback-
verspreventsentranceofdirtatthese
undbyremovingjackfromunder-
(Fig.60)
djustment
eckwheelbearingadjustmentas
erbrakeshoeadjustmentcannot
bearingsarecorrectlyadjusted.
djustingpinionshaft asshownin
ockwisedirectionuntillining
brakedrumas wheelisturnedby
ofa turnwhichwillprovideproper
enbrakeliningandbrakedrum.There
heel.Adjustall fourbrakeshoes
erwheeltogroundbyremovingjack
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 128/401
kesbyTurningPinionStudsin Clockwise
rrows
BLYREPLACEMENT
raphincludereplacementofall
rakeassembly.Ifonlynecessarytore-
nstructionsoutlinedasfollows(Fig.61).
eplacement
s.95b.— (1)through(3)forre-
ugh(8),except(6)forinstallation.
replacement
s.95b.— (1)through(5)forre-
ugh(8),except(6)forinstallation.
ment
s.95b.— (1)through(6)except
(2)through(8),except(3)for
acement
s.95b.— (1)through(7)forre-
ugh(8)forinstallation.
cement
aras.99b. forremovaland99c.for
dbrakeleverrearwardas faras
axleandliftuntil wheelisclear
studnutsandremovewheelfrom
yfrombolt headsandremove
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 129/401
ON,6x6
H.Shown)
ar
ont
getohub.Removeflangeandgasket.
fromflatsoflocknut.Removelock
utandwasher.Pullhub anddrum
movefromaxle,outerbearingcone
time.
amp(Fig.62)
poverendsofwheelcylindertokeep
rtoFig.62for methodofinstalling
brakeshoereturnspringpliersto
shoesinmannershown.
singscrewdriverandhammerin
3.Removeanchorpinattaching
eandlining assemblywithlinkscan
ed.
r
ndlockwashersattachingwheelcyl-
Pull cylinderfromdustshieldand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 130/401
hosewithouttwistinghose.See
plateanddustshield
dlockwashersattachinganchorplate
nnowbecompletelyremoved.Remove
kwashersholdingspacer,oildeflector
gknuckle.Spacer,oildeflectorand
mpletelyremoved.
anchorplate
againststeeringknucklewith
wheelcylinderopeningattop.Re-
ceragainstdustshield andinstall
kwashers.Tightencapscrews
lateagainstspacerwithguideplates
orendtowarddustshield.Install"six
ers.Tightencapscrewssecurely.
ghwheelcylinderopeningindust
linderusinggasketbetweenhose
deronhosesecurely.Donottwist
tachcylindertodustshieldusing
ashers.Tightenscrewssecurely.
kstoanchorusing anchorpin.Both
andliningsare alike;however,re-
whichareoffsetso thattheyare
t shoeend.Besureshoesare in-
tion.Installnewlockin anchorpin
at lockengagesgrooveallaround.
n spring
ring throughholeinbrakeshoe
cialplierstoattachoppositeendof
stratedinFig.62.Duringinstalla-
oesseatinwheelcylinderadjusting
CS-1038wheelcylinderclampplaced
e ofremoval.
wheels
adjustwheelbearingsasdirectedin
nhubsand replacehubstudnuts.
ternatelyuntiltight.Againcheck
t.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 131/401
TON,6x6
WheelCylinderClampandUseofBrake
bebledafter anyunitshavebeen
tesdisconnectingbrakelines.
ctedinPara.94b.
liningshavebeenrenewed,orwhen
blieshavebeeninstalled,it isofut-
kesbecarefullyadjusted.Maximum
obtainedimmediatelyifliningsare
tiontoaxlespindle.Brakelining
relationtofaceofbrakedrum
ncycanbeobtained.Brakelining
illustratedinFig.65,whenused
ccompanyingunit,providesmaxi-
nganddrum.Useofthis unitelim-
adjustmentafternewbrakelinings
erneedofadjusting brakesafter
foruseofdummydrum,is elim-
uedtoexactbrakedrumdimensions
icrometerasshowninFig. 66.
LYREPLACEMENT
raphincludereplacementofall com-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 132/401
assembly.If onlynecessarytoreplace
outlinedasfollows(Fig.67).
eplacement
s.96b.— (1)through(3)forre-
ugh(9),except(7),forinstallation.
replacement
s.96b.— (1)through(5)forre-
ugh(9)forinstallation.
ment
s.96b.— (1)through(6),except
—(2)through(8),except(3),for
dustshield replacement
s.96c.— (1)through(7)for re-
gh(8),forreplacement.
dbrakeleverrearwardas faras
axleandliftuntil wheelisclearof
udnutsandremovewheelsfromhub.
ayfromheadofcap screwsandre-
achingaxleshaftHangetohub.
sketbypullingstraightout from
fromHatsoflocknut.Removelock
utandwasher.Pullhub anddrum
movefromaxle,outerbearingcone
time.
amp
poverendsofwheelcylindertokeep
rtoFig.62for methodofinstalling
brakeshoeretufnspringpliersto
shoesinmannershownfn Fig.62.
singscrewdriverandhammerin
3.Removeanchorpinattaching
eandlining assemblywithlinkscan
ed.
r(Fig.64)
ndlockwashersattachingwheelcyl-
Pull cylinderfromdustshieldand
hosewithouttwistinghose.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 133/401
ON,6x6
eShoeAnchorPinLockswithScrewdriver
plateanddustshield
hersandboltsattachinganchorplate
usingflange.Anchorplateanddust
elyremoved.
anchorplate
againststeeringknucklewith
wheelcylinderopeningattop.Place
hieldwithoffsetat anchorendto-
ts,lockwashersandnuts.Tighten
yuntiltight.
ghwheelcylinderopeningindust
linder,usinggasketbetweenhose
deronhosesecurely.Donottwist
tachcylindertodustshieldusing
ashers.Tightenscrewssecurely.
kstoanchorusing anchorpin.For-
ndliningassembliesare alikeand
position.Installnewlockinanchor
nerthatlockengagesgrooveall
n spring
ring throughholeinbrakeshoe
cialplierstoattachoppositeendof
stratedinFig.62.Duringinstalla-
oesseatinwheelcylinderadjusting
CS-1038wheelcylinderclampplaced
e ofremoval.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 134/401
keflexibleHosefromWheelCylinder
adjustwheelbearingsasdirected
bstuds andreplaceinnernut.
ternatelyuntiltight.Install outer
eplaceouter nuts.Tightennuts
iltight.
bebledafter anyunitshavebeen
tesdisconnectingbrakelines.Adjustbrake
4.
pingsurfaceofflangeandinsert
axle housing.Turnshaftasneces-
gearsplines.Installcapscrews
dof screws.Tightenscrewsevenly
Bendlipsof lockplateagainsthead
describedin Para.95,isrecom-
ingshavebeenreplaced.
ACKETREPLACEMENT
orbracketis notgenerallynecessary,
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 135/401
ON,6x6
BrakeLiningGrinderforTrueingSurface
toAxle Spindle
werplantorwhenreplacingpedalbushing.
hinglefthanddriver'sfloorboardto
dout ofthevehicle.Removescrews
eboardaroundclutchand brake
e.
brakepedallinkage
vispinattachingpullrod tobrake
moveclutchpedallinkagebyremoving
chingbellcrankto idlershaft.
kepedals
outerendof pedalshaft.Remove
ttachingpedalshafttomounting
andoutof mountingbracket,pedal
removedfrombracket.Remove
washersattachingbrackettotrans-
ousing.Bracketcannowbecompletely
pedalbracket
ctpositionandinstallthree cap
Tightencapscrewssecurely.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 136/401
etertoMeasureBrakeDrumDiameter
pedals
sshaftandstart plainendofcross
pedalbracket.Placebrakepedal
acketandshovecrossshaftthrough
handbracketboss.Turnshaft tc
ampbolt holes.Installbolt,lock-
utsecurely.Replaceretainerspring
edalshaft.
age
eandreadjustclutchasdirectedir
rod
pin attachingrodtobrakepedal
ntoeboardandpedalandreadjust,i]
ara.98c.(5).
andfloorboard
teeringcolumnandpedalson to(
Installfloorboardand attachtosup
htenscrewssecurely.
EPLACEMENT
locatedbetweentwosupportinj
edtoleft-handframesiderailby bolts
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 137/401
ON,6x6
.H.Shown)
ear
ront
g
g.68)
rboard
utleft-handfloorboard.Disconnect
ke mastercylinder.
ndreturnspring
pringextensionatclevispineye.
vispinconnectingpullrodadjustable
peratinglever.
erandbrackets
ersandboltsattachingbracketsto
ofmastercylinder,brackets,cross
ecompletelyremoved.
Fig.68)
ndbrackets
bracketassemblyinsideleft-hand
urboltsthroughframeside railand
hersandnutsonbolts andtighten
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 138/401
ylinderMountingBracketsandLinkage
asterCylinder
s
ke
t
d
p
ntofmastercylinder.Tightenfit-
akageofhydraulicfluid.
pushrod
cknut.Turn pushrod(Fig.68)
ctspistonwheninreleasedposition.
nrear endcontactsstopplateat
rbarrel.If pistonisnotallowed.to
tion,pistoncup willcoverfluid
nder,therebypreventingfluidenter-
onreturn stroke.
haftinner leverclearance(Fig.68)
fstopscrewandshaftinnerlevermust
ndturnstop screwindirectionneces-
on.Tightenlocknut whenadjust-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 139/401
ON,6x6
ngth(Fig.68)
cknutandturnyoketo lineupholes
thatclevispincanbe easilyinstalled,
tion.
turn spring
eyoketomastercylinderinnerlever
pin. Attachreturnspringtoclevis
ember.Entirebrakesystemmustbe
.
ENT
edtoright-handframesiderail (Fig.
heneverpowersystemtestindicatesthat
ed,itisnecessarytoremovecompleteunit.
gs.57and69)
nhoseclampscrewsattachingvac-
dehosebackonlineand off"tee."
nletandoutletlines
etlineatfrontendof slavecylinder,
derto Hydrovac)atsideofslave
Hydrovactorearsupportbracket.Re-
ockwashersattachingfrontbracket
.Hydrovacassemblywithfront
etelyremovedfromvehicle.
Figs.57and69)
clewithslavecylindertowardfront
op.Insert2 clampstudsthrough
stall 2nuts.Place2bolts through
racketusinglockwashersandnuts.
nutssecurely,alsotighten2 nuts
mastercylindertoHydrovac)to
sing.Attachoutletline(to wheel
ylinder.Tightenfittingssecurelyto
ks.Attachvacuumlineto"tee"at
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 140/401
acUnit,AirCleaner,Vacuumand
n
I
K
CylinderP
ylinders
heelCylinders
heelCylinders
ngrubberhoseand2 hoseclamps.
opreventatmosphericleak.
nstalled,itis necessarytobleed
ectedinPara.93.
ANERREPLACEMENT
ttachedtoHydrovacunitasillus-
ngpowercylinderthroughrelayvalveis
nair cleaner.Airpassingthroughcurled
chisoiled,is cleanedthuspreventingdirt
andpowercylinder.
ltsandslidehose backontube.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 141/401
ON,6x6
wofHydrovacCleaner
herattachingaircleanertobracket
ell.Cleanercan nowbecompletely
r
sherholdingcovertoshell.Remove
dhair,innerscreen,andstemfrom
ry cleaner,loosenaccumulated
hcompressedair,afterdepositsof
aturatecurledhairin lightengine
ainoff.
r
shell andinstallinner(small)
aceoiledcurled hairevenlyaround
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 142/401
ofVacuumCheckValve
ter(large)screeninside shellwith
er.Replacecoverandsecureinplace
.
roughmountingbracketandinstall
ennutsecurely.
warduntilhoseis overstem.Locate
ndtighten clampboltssecurely.
LVEREPLACEMENT
ethatcheckvalveisnotseating prop-
edandcleanedor replaced.
connectionsandvalve
tubenutfromelbowat bottomof
owfrombottomofcheckvalve.Re-
ecialelbowfittingattachedtomani-
tting.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 143/401
ON,6x6
Con-
hut-Off
Fig.71)
ve
efourscrewsandlockwashersat-
alvesofbodytogether.Separatetwo
ckvalvecannowbeliftedfromlower
valveseatinlowerhalfof valvebody.
emoveanyslightimperfectionsor
emble
valve,alsoguidein lowerhalfof
rsealatvalveand ifdeterioratedor
t.Placelongendof valvesteminto
g.Placegasketbetween'twohalves
alvesofvalvebodytogetherand in-
ashers.Tightenscrewsevenlyand
cialelbowfittingattachedtomani-
eventatmosphericleaks.Thread
andtightensecurely.Attachtube
curely.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 144/401
r
and
tionat
ear
NDFLEXIBLEHOSEREPLACE-
esandflexiblehose,usedbetween
cunitandwheelcylinders,areshownin
g.Hydrauliclinesarespecialmetal
thstandhighpressure.Wheneverneces-
o
and
atLeft
Wheels
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 145/401
TON,6x6
Con-
gnear
e lines,itisimportantthat thisspecial
ytubing isnotsatisfactory.
ose,usedbetweeneachwheelcyl-
nnections,isspecialflexibletype,made
.
ock.Shut-offcock,locatedopposite
ndframesiderail,isprovidedto shutoff
elcylinders.Ifflexiblehose orhydraulic
ged,cockcanbeclosed,andrearbrakesonly
— rightfrontandforwardrearwheels
siderailattaching"tee"to flexible
elocknutattachingflexiblehoseto
out ofhullandframefromoutside
eelcylinder(Fig.73).
— leftfrontandrearwardrearwheels
inghydrauliclineortubingto endof
siderail.Removenutand gasket
hingflexiblehoseto framesiderail.
framefromoutsideandremovehose
4).
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 146/401
sortubing
esissame exceptthatsomeuse
ers,thereforefollowingremovalin-
Removefittingnut ateachend
om"tee"orotherfitting.Remove
ttachingcliptoframesiderail or
ipsandfittingnuts cannowbe
(Figs.76, 77and78).Whentube
twill benecessarytocuttubetoproper
tcouplings.Tubingthatisnot properly
rakesto beineffective.CutandHaretubing
esiredlength,usingKM-KMO-3special
ening.Squareofftheend withafine-cut
arpedgeswithreamerbladeprovidedon
ncouplingnutsontubing.Dipend of
raulicBrakeFluid.Thislubricationresults
eHare.LoosenclampingnutsonKMJ-1885
ngin channelofthedieuntil itbears
6.
byhandand placefixtureinabench
ampingnutsfirmlywitha wrenchand
e. Thetubingisnowfirmlygrippedi n
lare-formingoperation.
toolhavingthe concavedie,insert
kefirmblows,withahammer,untilshoul-
pofthedie.Fig.77.
toolhaving45-degreedieat itslower
strikefirmblows,witha hammer,until
opofthe dieFig.78.
tubing
sitionand attachfittingnutsto
econnections.Attachlinetoframe
usingclip,bolt,lockwasherandnut.
ethatline isnotcrushedor bent
flowofhydraulicfluidandprevent
es.
ftfrontandrearwardrear wheels
heelcylinder,usinggasketbetween
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 147/401
ON,6x6
elcylinder.Tightenhosesecurelyto
ks.Passoppositeendofhose
p.Placesealwasherandrubber seal
onnectionandinsertend ofhose
ndframe.Installflatwasher,lock-
nnectionandtightennut securely.
ghtening.Attachhydrauliclineto
adingline nutinsideofflexiblehose
ecurelytoeliminatepossibilityof
ghtfrontandforwardrear wheels
heelcylinder,usinggasketbetween
elcylinder.Tightenhosesecurelyto
ks.Passoppositeendofhose through
ealwasherandrubber sealover
ectionandinsertendof hoseconnec-
e.Install flatwasher,lockwasher
nandtightennut securely.Donot
g.Insertcapscrewthroughtee
seconnection,usinggasketunder
enteeandconnection.Tightencap
epossibilityofleaks.
TMENT
dbrakebandhas beeninstalled,or
indicatesthatliningtodrumclearance
entcenterforwardfloorboardby
gfloorboardtosupports.Sethand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 148/401
dpositionby movingleverasfar
anchorscrewslot.Turnanchor
ain.010"-.015"clearancebetween
gauge asshownFig.79.Thread
chorbracketandslotin anchor
preventanchorscrewturning.
gscrew.Usescrewdriverinslotted
reventscrewturning,whileadjust-
020"clearancebetweenliningand
Tightenlocknutwhenproperad-
ed.
dof adjusterbolt.Turnadjusting
cebetweenlininganddrumas shown
whenproperadjustmenthasbeen
vispinattachingadjustableyoketo
ableyokelocknut.Turnyokeas
n yokeandcamlevers.Attachad-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 149/401
TON,6x6
susingclevispin andcotterpin.
cknut.Installforwardcenterfloor
rtswithscrews.
ANDDRUMREPLACEMENT
ndwith liningarelocatedatrear of
withlining,or drum,canbereplacedwith-
ofotherunit.
ocedure(Fig.82)
entcenterforwardfloorboardby
gfloorboardtosupports.Remove
ttachingspacerlinksto brakesup-
knutandadjustingnut fromlower
washer,flatwasherandcompression
dfromlowerend ofadjustingbolt.
oreleasespringsandcamshoeare
nchorscrew
onutsfromlocatingscrewso that
removed.Usepliersto cutanchor
anchorscrewfromanchorandband
g
mblymustnowbe pulledtoward
support.Whenbandhas beenre-
ngcanalsoberemoved.
inleft-handsupportwhilebrake
sbeing movedforwardandover
ngscrews
ughbandanchorandintosupport
nlytemporarilyinstalledatthistime.
ghholesinbrakebandlower bracket
threadtwonutsonlocatingscrew.
ngbolt.Passthreadedend ofad-
oughbandupperbracket,upperre-
erreleasespringandband lower
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 150/401
ver,Mountings,Linkage,Bandand
on
onspring,flatwasherandadjusting
stingbolt.
deof spacereyeandattachwith
nkstoadjustingbolteye andcam
throughspacerlinks, camlevers
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 151/401
ON,6x6
tallcotterpin ineachclevispineye.
clearanceasdirectedin Para.103b.
boardandattachto supportswith
ocedure
entcenterforwardfloorboardbyre-
floorboardtosupports.
tuniversaljointanddrum
atrearoftransfercaseas directed
annowbe movedtorearandcom-
Procedure
shaft
bothsidesof drum.Placedruminits
ningandpush forwardagainstuni-
umto lineupboltholesand push
nstallpropellershaft asdirectedin
adjustmentasdirectedin Para.
erfloorboardandattachto supports
ANDLINKAGEREPLACEMENT
ntrolrod tobrakebandcanbere-
mountingbrackets.Whennecessaryto
tisofcoursenecessarythatlever bere-
ndhandlever
mpartmentfloorboards.Removecot-
achingpullrodtohand brakelever
oveboltnutsattachingsectorto
sectorandleverassemblyfromsup-
tattachingright-handlevertocross
removefromleverandsupport
ndleverfromcrossshaftbyremoving
asher.
handsupportbrackets
andlockwashersattachingleft-hand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 152/401
ettotransmission.Liftbracketup
movetwocapscrewsandlockwashers,
tachingright-handcrossshaftsup-
on.Removebracketfromstudand
y.
andsupportbrackets
ositionwithstudthroughlower hole.
asher,alsotwocapscrewsandlock-
wsandstudnut.Placesupport
wardedgeofbracketbetween
albracket.Installthreecapscrews
capscrewssecurely.
centers)onshaftusingWoodruff
t andlockwasher.Placeshaft
dsupportbrackets.Installright-
ters)onshaftusing Woodruffkey
d lockwasher.
semblytoleft-handsupportbracket
kwashers.Spacersareusedover
cketandsector.
ins toattachshortpullrod between
sshaftleft-handlever.Attachbrake
ftright-handleverusingclevispin
od asdirectedinPara.103b.In-
tmentfloorboards.
etbrakelinings
eaction.
hicleminimize
uldcausebrakes
edtooclose.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 153/401
andinspection109
r110
cementI11
ment112
ousingreplacement113
ION
cleissingleplate,drydisc typewith
ragmtypepressurespring.Clutchrelease
tchpedal,releasefork,andreleasebearing.
nshaftand isconnectedtoreleasefork
nFig.83. Releaseforkisballstud
.Innerendoffork engagesgrooveinre-
ofreleasebearing.Releasebearingisof
atedatassemblyanddoesnotrequire fur-
tthelifeofthe bearing.
oil-sealedtypewhichfitsinrecess
sapilotfor clutchshaftoftransmission.
ononlywhenclutchis removedfrom
tedin Fig.84whichshowsrelative
tchis"engaged"and"disengaged."Note
hdisciscontactingfaceofflywheel,being
byclutchpressureplate—which,inturn,
bypressureexerteduponit bythedia-
hinthis engagedposition,engineand
ed.Pressingdownonclutchpedaldisen-
gconnectionbetweenengineandtransmis-
G
aximumefficiencyandlonglifeand
peratingdifficultyshouldbeencountered.
wever,andmustbecompensatedfor,and
funsatisfactoryoperationmaybedeter-
following.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 154/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 155/401
ON,6x6
auseRemedyParagraph
oose
glever111
s-
Ill
ENANCEANDINSPECTION
ectionV,"PreventiveMaintenance
sindicated,shouldbeaccomplishedon
ventivemaintenanceoperationisto
kagetocompensatefornormalwearof
dureisexplainedinPara.110.
INGWEAR
earisaccomplishedbyregulatingthe
altravel.Thisamountoftravel isthedis-
beforecausingreleasebearingtocontact
g.Asfacingswear,fingersofdiaphragm
sebearing,thusreducingclearanceatthis
elesseningclutchpedaltravel.
AdjustmentProcedure.(Referto
river'scompartment
ardindriver'scompartment.
tinglinkatreleaselever. Turnad-
yberequired,to obtain21/2"free
clutchstartsto release.Freepedal
withfingeronpedaland notwith
ery sensitive.With21/2"pedalfree
ed,turnupchecknutfirmlyagainst
justmentfromcomingloose.
MREPLACEMENT
ndreleaseforkmaybereplacedwith-
nits.Howeverreleasebearingcannotbe
issionisremoved.
rocedure
randtoeboard
dtoeboard.
trollinkage
at clutchoperatingleverbyremov-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 156/401
dLinkage
rodandoperatingleverbyremoving
ofpedalrod.Removehairpin lockat
moveclutchoperatinglever.
Procedure
haft
eroverendofshaft.Installhair pin
theninsertpedalrodin holeatend
urewithnut andcotterpin.
inktooperatingleverusingclevis
eckpedalfree travelandadjustas
etravelisnot2'/;>".
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 157/401
TON,6x6
sengagedPositions
movalProcedure
gunderpan
ewswhichattachclutchhousingun-
nd removepan.
eforkandballstudassembly
eforkfromclutchlinkagebyremoving
ustinglink.Loosenandremovere-
er sideofclutchhousing,usinga
h.Disconnectclutchpullbackspring
oveforkandball studassemblyfrom
dretainerspringout offorkand
nProcedure
highmeltingpointlubricantas
brication"andinstallballstudand
place endsofballretainerspring
illbe completelyseatedingrooves
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 158/401
ud assemblyinclutchhousing
ssembly,usingcaretoseethat
kareingrooveofreleasebearing
dinto supportandmakesureball
nup tightly.
nkage(Fig.83)
inglinktoreleasefork,usingad-
lbackspring.Adjustclutchpedal
Para.110, andinstallchecknut.
alProcedure
irectedinPara.279.
gandsupportassembly
pportassemblyfromhardenedbut-
sebearingshouldnotbe removed
temsare notservicedseparately.
tionProcedure
rooveinbearingsupport
fhighmeltingpoint lubricant(see
orspecifications)toreleasefork
upportassemblybutdo notlubricate
prelubricatedatassembly.
ndsupport assembly
portinreleaseforkmakingsure that
fforkenter grooveinsupport.Line
h splinesinclutchdrivendischub
directedin Para.279.
GREPLACEMENT
etractingspringscanbeaccomplished
ssemblyfromvehicleinthefollowing
ovalProcedure
ndunderpan
ver'scompartment.Remove4cross
attachclutchunderpantoclutch
ngs
ctingspringisvisibleand remove
tingspringtopressureplateand re-
n Fig.85.Repeatthisoperation
ingsare removed.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 159/401
TON,6x6
ings
ationProcedure
holeincoverasillustrated inFig.
plate,usingspecialboltandshake
tBearing
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 160/401
eRun-OutandSquarenessofClutch
clutchunderpantoclutchhousing,
crewsand lockwashers.
RINGANDHOUSINGREPLACE-
edfromenginewithoutfirstremoving
clutchortransmissiondoesnotnecessitate
hicle;however,thetwolowertransmission
boltsareaccessibleonlyfrominside of
hhousinglowerpanisremovedandmaxi-
andefficiencyoftheworktobeperformed
epowerplantis removedfromvehicle.
transmissiononlyareoutlinedin Para.
valofcompletepowerplantarecontained
overthereplacementofclutch,pilot
g;however,clutchhousingreplacement
nlessproperfacilitiesfor checkingalign-
eelareavailable.
ure
irectedinPara.279.
ndballstud assembly
eforkfromclutchlinkagebyremov-
djustinglink.Loosenand remove
nner sideofclutchhousing,using
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 161/401
ON,6x6
tBearing
ch.Disconnectclutchpullbackspring
oveforkandball studassemblyfrom
ctsizeor ClutchAligningArbor
ubandloosen thenineclutchcover
timeuntildiaphragmspringpressure
pletelyremoveallmountingbolts,
dlowerclutchassembly.
rocedure
bly
asdirectedinPara.113c.
KM-J-164asillustratedin Fig.86
emovepilot bearing.Adjustpuller
ersonpuller areclosed.Insert
aringas farasitwill go.Tighten
gersofpuller behindbearingand
ststopnuton pullershaftseveral
alProcedure
haftandbrackets
dinPara.138.Removepinwhich
trolbellcranktocrossshaftbracket
connectoilpressuregaugelineat
enut.Removetwoboltsateach
movecrossshaftandbrackets.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 162/401
hAssembly
g
uumlineatmanifoldand remove
housinginspectionholecoverbolt.
screwswhichattachextensionplate
nd sixboltswhichattachhousingto
g.
onProcedure
e
sandboltclutchhousingto engine
shersundertheheadsofthesix
tensionplatetofrontofhousing
ews.
ole
tingbracket(toolKM-J-1895)to
ountingboltasillustratedin Figure
ertipso thatitisin contactwithin-
otateflywheelandnote readingon
ceeds.010"housingmustbere-
arfaceofhousing
kingrun-outofpilotholeexceptthat
stbe restingonmachinesurfaceof
"fromedgeofpilothole.-Ifreading
ustbereplaced.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 163/401
TON,6x6
gArbor
terlinkage
Para.138.Attachstartercross
olts ateachbracket.Installaccelera-
ft-handbracketandreplacecotter
cuumlinetomanifoldandattach line
pectioncoverbolt.
Procedure
edto providecorrectbearinginstalla-
led,it mustbeinexactalignment
using.Usepilotbearingdriver
ig.88 toinstallbearing.
aring
racesbeforeinstallingbearing.
ation,"forproperlubricant. Posi-
er.Placetoolandbearingin pilot
movehandleforwarduntilbearing
nkshaft(Fig.88).Tapendofhandle
bearingisproperlyseated.
dure.TheuseofClutch Aligning
endedtoproperlycenterclutch discdur-
ver.
heel
orhandcrank ifengineisout of
ywheelis visiblefromunderside
pressureplateassemblyagainstfly-
il"X"markon cover(showninFig.
konflywheel.InsertClutch Align-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 164/401
0)in clutchdiscandinstallbolts
heel.Eachboltshouldbetightened
,topreventdistortionofcoveras
.
rkandlinkage
ageas directedinPara.llle.
nedinPara.279.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 165/401
andinspection117
gandrefilling118
119
120
1
122
123
cement124
ION
oolingsystemare:radiator,overflow
ostat,thermostatby-pass,temperaturein-
recontroltube,fillercapsandthetubes
diatorwithengineandwaterpump.These
enpropermaintenance,toautomatically
emperature.
frombottomof radiatorbyaction
e-circulatedthroughpassagesandwater
ned,throughupperconnections,toradi-
actionoffanblowingairthrough radiator
hintakegrille,locatedjust torearof
or,forcesairthroughshroudandradiator
tsandoutairexhaustgrille. Air,for
arpaulininstalledistakenin through
oFig.91.
wtankisprovidedtotakesurgeof
ntoradiatoruppertank wheneverve-
enstoporengineis suddenlyaccelerated.
atrestrictsflowthroughradiator
maloperatingtemperatureofengine.
yopensingradualstages,beginningatap-
ostatisfullyopenedatapproximately185°.
ndthermostatandradiatorto allowcir-
roughoutengineandwaterpumpwhen-
Temperatureindicatorisdriver'sguideto
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 166/401
culation
gsystem.Itprovidesconstantindication
psare providedinsystem,acon-
diatoranda pressuretypecapatoverflow
angethepositionofthesecaps.Pressure
owtank.Radiatorcapis aconventional
be keptinplacewhenvehicleisin opera-
ap(Fig.92)."Thiscapincorporates
hmaintainsapressureof 314to414
whenenginehasreachednormaloperat-
easeinpressureraisesboiling pointof
aslightly higheroperatingtemperature
engineperformanceandeconomywith-
ting.
G
ause
ming
osed.
e.
d.
.
0
2
3
8
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 167/401
ON,6x6
auseRemedyParagraph
pen.Replacethermostat...122
tions.Tightenallconnections;
Replacepump123
Replacecore121
ENANCEANDINSPECTION
eoperationsasitemizedinSectionV
tintervalsindicated.
ventivemaintenanceareitemized
120 ofthissection.
G,FLUSHINGANDREFILLING
ystemshouldbecleanedatleast
tenifinspectionrevealsunusualaccumu-
is serviceshouldalwaysbeperformed
-freezesolution.Wherevercoolingsystem
ed,besureradiator,overflowtankandcyl-
eedraincocksareprovidedfor thispur-
nd notrefilledimmediately,asuitable
waterin coolingsystem"andattachedto
menthatchcover
enthatchcoverhold-downboltwing
,securingitin raisedpositionwith
diatorandoverflowtankfillercaps.
dcylinderblock
aincock,locatedatbottomoftank,
ock,locatedatleftrearside of
nthatchcover
thatchcoverhold-downboltwing
.Removesnappluglocatedatupper
ompartmentbulkhead(between
ewradiatordrain cock.
rocedure
to stiruplooserust, thendrain
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 168/401
kCap
a.118b.Closeradiator,overflow
aincocks.
andrefillsystem
oradiatorand fillsystemwith
eaneristobe used,followcleaner
nsforcleaningandneutralizingsys-
ven inthisparagraph.)Replace
kfillercaps.
nto approximately180° butdonot
rcoreif necessarytoattain180°).
east 30minutes.Stopengineand
ughlydrainsystem.Closedraincocks
nstallingfiller caps.Runengine
systemagain.Refill systemas
:Inthe eventpressureflushingis
recautionsmustbetaken:
describedinPara.122.Flushradia-
rately—flushradiatorfirsttoallowengine
fillercapisin place.Loosenhoseclamp
rinlet hose.Loosenhoseclampandopen
nnectionhose.Attachpressuregunto
waterouttop.Useradiatorhose toattach
waterfromradiator.Attachpressuregun
ononengine,forcingwateroutradiatorto
ollowinstructionsofflushinggunmanu-
veprecautions.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 169/401
TON,6x6
ment
efill
ndinstallsnapplug inbowcom-
ebowcompartmenthatchcoverand
nboltwingnuts.Closeoverflowtank
ocksandfillcoolingsystemthrough
n:Useclean,softwater.Avoiduse
li,orother substancesthatpromote
andrust.Donot usesaltwater.
closeenginecompartmenthatchcover.
flowtankfillercaps—Sealingcapon
onoverflowtank.Thisis important
lingsystem.Closeenginecompart-
ure.
EPARATIONS
aingreatestefficiencyandcarefree
gcoldweather,asystematicinspection
uchasoutlinedinPara.118 shouldbedili-
mustbeprotectedagainstfreezing
natmospherictemperaturebelow32°F.
pesof anti-freezecommerciallyavailable
areanti-freezesolutionssatisfactorilyfor
sesubstancesarecommonlyknownas
nol(syntheticVoodalcohol)andethylene
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 170/401
Alcoholandmethanolaresubjectto
erequirefrequenttestingandaddingof
ectionforthelowestanticipatedtempera-
neglycolrequiresaverywellmain-
sedina leakproofsystem,usuallyno
erequired.Duetoits highboilingpoint,
oration.
ts.Solutionscontainingsalt,mag-
licate,kerosene,orotheroils,arenot
ngsystem.
e
tion,thecoolingsolutionmustbe
minestrengthofanti-freeze.Atest-
n strictaccordancewithinstruc-
ufacturerfortestingparticulartype
usedifferenttypes ofanti-freezein
Followingchartlistscorrectamount
etobe used.
m
mbecomesfrozenanda heated
dcoveragainstcoreand rur
isthawedout.If coolingsolutior
cevehicleinaheatedgarageuntil ice
nd,undernocircumstancesshould
scondition.
TENANCE
cedure.Fanismountedtowater
y beltfromcrankshaftinconnectionwith
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 171/401
ON,6x6
ptatproper tensioninordertoobtain
dtoobtainmaximumlifeof belt.Fanand
henginecompartmenthatchcoveropening.
nting
ountingbracketboltnutsandthen
ngarmbolt.
rawayfromengineasnecessaryto
.Alightpressureon beltata point
aftandwaterpumppulleymust
onasshownin Fig.93.Donotadjust
eratortoadjusting armboltandthen
ountingbracketboltnuts.
dure«
nting
ountingbracketboltnutsandthen
ngarmbolt.Movegeneratorto-
illgo.Removebeltfromgenerator
andcrankshaftpulley,thenremove
cedure
desand placeoverwaterpump,
rpulleys.RefertoPara.a.foradjust-
earancebetweenbladesandshroud.
edure
erpumpbolts andremovefanand
der.
MENT
. Radiator,fanshroudandover-
movedthroughenginecompartment
pendentlyofeachother.Radiatortoside
ethroughbowcompartmenthatchcover.
Para.118.
ections
lowerconnectionhoseclampscrews
erhosesfromradiator,also dis-
owtankpipeattankdrain cock.Re-
wpipeclipscrewsandremoveclips.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 172/401
lation
Water
allation
nt,removesix(3eachside)radiator
andlockwashersandremovebolts.
ndremovefromvehiclethrough
chcoveropening.Takeparticularno-
pportseal isnotlost.
cedure
diator upperandlowerfelts,also
al,arein goodconditionandin
ry.
ountingflangesintowardradiator
sto clearsidesupports,andcare-
sition.Frombowcompartment
diatortosidesupportbolts,lock-
tradiatoroverflowpipetooverflow
clipsand screws.Alsoinstallupper
estoradiatorandtightenfour clamp
Para.118.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 173/401
ON,6x6
ocedure
dtolowershroudbolt nutsandlock-
.Removeeightshroudtosidesupport
andremovebolts.Removeupper
emovelowershroud.Donotlose two
Procedure
torfeltin positionandinstall
oside supportbyfourbolts,lock-
ppershroudtoradiator feltinposi-
d,securingit tosidesupportby
dnuts.Alsoinstallfourupper to
ashersandnuts.
Procedure
ect
pandunscrewtankdraincockto
htbein tank.Disconnectradiator
cock.Removefourtanktoside sup-
shersandremovebolt.Removetank
onProcedure
e supportandinstallfourtankto
sandnuts.Connectradiatoroverflow
placetankfillercap.This isthe
CEMENT
statislocatedatcylinderhead
ntsorrepairscanbe madeonthermostat
systemindicatesunitas unsatisfactory,
menthatchcoverhold-downbolt
over.Removesnapplugin bow
ndunscrewradiatordraincockand
enginecompartmenthatchcover
ndopenhatchcover,securingit in
pchain.
nectionhoseclampscrewsandre-
athousing.Removetwothermostat
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 174/401
nnectionboltsandremovethermo-
ostatunitfromwateroutletconnec-
ontainerof waterthatmaybe
meter(onethatwill registeratleast
temperatureofwaterwillbeindicated.
ndwatchoperationofthermostat.
openatapproximately160° andbefully
185°.Intheeventoperationofthermostat
anduseoneknownto operateproperly.
onincylinderheadwateroutlet
ermostathousingtooutletconnection
mblethermostathousingtooutlet
ermostathousingtooutletconnection
semblingwatertemperaturecontrol
ectionhoseoverthermostathous-
ampscrewssecurely.
installsnapplugin bulkheadand
atchcover,securingitwithhold-
or.Closeenginecompartmenthatch
-downbolts.
CEMENT
rocedure.Waterpumpmaybere-
ughenginecompartmenthatchcover
Para.118.
Para.120.Removefourfantowater
ovefanand spacer.
erpumphoseclampscrews,a1
hosefromwaterpump,Loosentwc
pscrewsandremovehosefromby-pass
mptocylinderblockboltsandre
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 175/401
ON,6x6
hicle.Donotloosewaterpumpto cyl-
Procedure
ne
cylinderblockgasketin position,
ositionon engine.••
asherinwaterpumpbolt holejust
enfingertight.Then installre-
ckwashers,assemblingfuelandoil
ustingarm.Tightenall fourbolts
totee andtightenhoseclamp
waterpumphoseto waterpumpinlet
rews.
itionon waterpumpandinstall
.FollowproceduregiveninPara.
Para.118.
GEREPLACEMENT
auge,capillarytubeandthermal
sembly.Noprovisionsare madetorepair
ugefunctionsimproperly,replaceunit.
e.FollowinstructionsgiveninPara.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 176/401
RING
andinspection126
vehicleis6-volt;with wiresade-
us"tracer"colors(Fig.96),and
cal,inwiringindividualharnesses.Con-
blocks,terminals,andinstrumentsare
essary,foraccessibilityandaccuracywhen
tion.
hegeneralcareand maintenanceof
ditionto generalwiringinstructions,
ccomplishageneraltune-upofsystem
sedin variousotherelectricalsystems
dualsectionsas follows:
s
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 177/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 178/401
RING
Diagram
nessY
BB
rness
GG
h
Harness
terHarness
Lamp
andTail
mp
CEANDINSPECTION
minalsandconnectionsatjunctions
tedregularly.Theseconnectionsmustbe
mes. Bearinmind:acleanand tight
oodconnection.
deina line,soldermustbeusedto
tapeshouldbe usedprofuselytoprotect
amineandtightenallharnessclips
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 179/401
ON,6x6
6RAPD16145
nelWiringConnections
T
S
ker
stemis ofaspecificsize.Insulation
tivecolororpatternof colorstoaidin
scircuits.Chart,Fig.96,illustrates
illustrates,ina schematicmanner,
itsthroughoutvehicleelectricalsystem.
cuitcanbereadilymade withconven-
estequipmentofanyelectricalunitor
sfollowedaccurately,apoint-to-point
rcuittoestablishcircuitcontinuity.
sareusedonvehicles,as illustrated
scontainwiresto variousunitsand
essmayberemovedasanassemblyfrom
esarewellinsulatedwithheavyloom,and
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 180/401
RING
ersandJunctionBlockConnections
ness
Tr.
ckCr.Tr.
ndFilterHarness
kCr.Tr.
kCr.Tr.
ndStarterHar-
witchHarness
eachharnessarelistedin Figs.101through
egulatorConnections.Figs.99and
atinstrumentpanel,andatregulator.
heseconnectionswillbefoundin Section
pectively.
ss(Fig.101).Thisharnessextends
ghtoeboardandto instrumentpanel.
Starter Harness(Fig.102).This
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 181/401
ON,6x6
anelWiringHarness
l
n
w.
Dash Lamp
DashLamp
Dash Lamp
OSw.
Sw"S"
htSw.'B51'
ghtSw.'Si-
"
d
Sw.
.Sw.
r.
ck,
3
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 182/401
RING
andStarterHarnesses
CK
kCr.Tr.
kCr.Tr.
LANDSTARTER
ndFilterHarness(Fig. 105).This
tor,atleftsideofengine,withregulator
andengineroombulkhead.
ness(Fig.106).Thisharnessextends
ghbulkheadandrearwardalongunder
andunderreardeckto stopandtaillamps.
UP
eorderlyprocessofcheckingvehicle
termineifitis functioningproperly.In
rnequipmenttonewconditionso that
isrestored.Acomprehensiveanalysisof
ludechecksonbattery,startingmotor,
ibutor,coil,sparkplugs,andallwiring.
detoall otherElectricalSystemsec-
tructionsasitemizedaccomplished.
ktoStopSwitchWiringHarness
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 183/401
ON,6x6
ringHarness
minal
r 4
kCr.Tr.
..HighBeam
Beam
kout
..HighBeam
Beam
MENT
gharnesses,usedonthis vehicle,are
allyinFig.98.Individualharnessesare
ugh106.
wiresizeandcolor,alsojunctions,
nessillustrations.Whenremovinghar-
meachunitterminalorjunction,as shown
RegulatorandfilterWiringHarness
d
Cr.Tr... .Filter
r.Tr.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 184/401
IRING
ampWiringHarness
inal
nal
ector
onnector
ns.Removeclipsattachingharnessto
Whenwiresandclipshavebeenremoved
sscanbecompletelyremovedasanassem-
nessinits correctlocation,being
hgrommetsatbulkheads.Installclips
orts,bulkheads,etc.Fig.98showsap-
psandgrommets.Selectwiresizeand
vidualharnesses,andattachtounit ter-
ed.Tightenallterminalssecurely.Bear
electricalconnectionisagoodconnection.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 185/401
ARTINGMOTORANDBATTERY
andinspection133
nt137
nt138
agereplacement139
ION
sofbattery,startingmotor,control
ngcablesbetweenbatteryandstarting
tachedtoright-handsideof clutchhous-
nover-runningclutchdrivewhichis
gementwithflywheel.Startingmotor
tartingmotor,completeselectricalcir-
tartingmotor,whenstarteris being
eandislocatedatright sideofengine.
batteryisused primarilytosupplycur-
gmotor.The batteryconsistsofthree
ivingaterminalvoltageof sixvolts.Each
proofcompartmentinwhichtwogroupsof
ve,areimmersedinelectrolyte,asolution
r.
eryareconnectedtoeachother by
ontrolledbyfootpedal,whichopensand
actpoints,therebycontrollingelectrical
dstartingmotor.
.Whenstarterpedal buttonisde-
tofshiftleverpushesdriveunit rearward
hflywheelringgear teeth.Upperendof
gswitchbuttonafterpinionhas fully
whenspringissufficientlycompressedto
oon asarmaturerotates.Whenenginehas
ningclutchonstartingmotorshaftre-
ywheelteeth.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 186/401
ARTINGMOTORANDBATTERY
orInstallation
river,spring onstartershaftandreturn
verreturnsstarting mechanismtooff
ectro-chemicaldeviceforstoring
nproperlyused,hastwomajorfunctions.
ern,directlyorindirectly,thevoltageof
m.Thesecondfunctionistoprovideelectrical
ndignitioncircuitwhile engineisbeing
iesenergy,underlimitedconditions,to
ccessories.
G
esymptomsinstartingmotorsystems,
nintoconsideration.Theseare(1) condi-
nofcableand terminals,orcontinuityof
chanicalandelectricalconditionofstart-
terrepeatedandsatisfactoryopera-
seoffailure ofenginetostartcannotbe
rsystem,butto otherfunctioningsys-
tion,fuel, etc.Referenceshouldbemade
g"tablesinthismanualtodeterminecause
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 187/401
ON,6x6
e
ause
ch
es
or
bly
dbattery
t-
ed
36
38
38
38
38
38
38
ator
ust-
36
38
38
38
38
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 188/401
ARTINGMOTORANDBATTERY
.Importanceofproperlymaintainingbat-
asizedasthecompletestartingsystemwill
ercondition.
ountingboltstobe suretheyare
dinspectconditionofcommutatorand
stripofnumber00 sandpaperbetween
ilearmatureisrevolving.Ifthis failsto
commutatorisbadlyworn,startingmotor
polishingoperation,dustshouldbeblown
dinspectconditionofbrushes.Ifap-
startingmotorshouldbereplacedas di-
y,tightenscrewsattachingstarter
using.
y,tightenterminalstudnutattaching
soammetertoswitchwire.
videntthatcontactpointsarenot
eplacedasdirectedinPara.137.
ACE
madeof startingmotorcircuitat
ineconditionofvariousunits.Symptoms
rtingsystemdifficultiesareoutlinedin
unitssuchasgeneratorandregulatorare
actorstobatteryfailure.Therefore,ref-
madetotrouble-shootingchartscovering
move3fillercapsandchecklevelof
velshouldbe approximately%"abovecell
erwatershouldonlybeaddedjust before
waterwhennecessarytoadd.
s.Inspectconditionofbatteryter-
orroded,removeandcleanwithsolutionof
cableterminalsandbatterypostwith
alonpostandtightenclampnut securely.
atereadinghydrometerandcheck
cificgravityofbatterysolution.Full
stbetween1.260and1.300.Ifreadingis
dbereplaced.Freezingpointofelectrolyte
vityorconditionof batterycharge.Fol-
temperatureofbatterysolutionatvarious
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 189/401
ON,6x6
ewithStartingMotor
SpecificGravity
nition switchofforhightension
ncoil,operatestartingmotorandquickly
withAEE-F8lowreadingvoltmeterin
If voltagefallsbelow1.7voltsat80°F.or
weencellreadingsofmorethan1/10volt,
uldbereplaced.
onnectionstodetermineiftheyare in
cessiveresistance.Excessiveresistance
gedropwhichmaylowervoltageatstarting
thatnormaloperationofstartingmotor
malvoltagedropcanbe detectedwitha
tifyOrdnanceMaintenancePersonnel.
ENT
essarytoremovebatterywheninspec-
mustbereplacedor recharged.
wsandliftengineroomhatchcover.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 190/401
ARTINGMOTORANDBATTERY
dhatchcoveropen.Loosenpositive
boltnutsandlift cableterminalsfrom
dinguppertrayovertop ofbattery.
y.Usebatterylifter strapandraise
onottip batteryduringremovalas
lledfrombattery.
hcellas directedinPara.134.Use
nalsand lowerbatteryintoplace
minalofbatterymustbe toward
erbatterywith rodsateachend
l wingnutoneachstudand tighten
batteryandcableterminals.Install
estobatteryterminalsandtighten
egrounded).Coatterminalswith
rosion.Lowerhatchcoverandtighten
ghatchcoverinplace.
EPLACEMENT
hold-downboltsandl iftengineroom
upchaintoholdhatchcoveropen.
rminalnut,twocablesandcondenser
ofbattery cabletopreventdischarge
omein contactwithmetal.
ndenser
ockwashersattachingswitchtostart-
vecondenserandstarterswitch.
enser
asherstoattachstarterswitchand
orhousing.Tightenscrewssecurely.
terycable,andcondenserpigtail
minal.Replacelockwasherandnut.
ovehold-upchainandlowerhatch
nutsonhold-downboltsholding
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 191/401
ON,6x6
EPLACEMENT
emovedto lubricateinboardbearing
e
cover
hold-downboltsandl iftengineroom
upchaintoholdhatchcoveropen.
tedinPara.200. Removebattery
cidentaldischargeofbattery.Re-
attachingammeter,batteryandcon-
itchterminalandremovecables.
ring.Removecotterpin,returnspring
glinkagerodto shiftlever.Remove
hersattachingstartingmotorto
otorcannowbemovedforwardto
ure.
correctpositionwithstarter switch
ockwasherandcapscrewalsolock-
startertoclutchhousing.Tighten
ndalternatelyuntiltight.
bles
inkagerodto shiftleverandinstall
rpin. Attachreturnspringtoclip
tachammeter,batteryandcon-
itchstudand installlockwasherand
Attachgroundcableatbatteryand
elfilterasdirectedin Para.200.Re-
werhatch.Tightenthreewingnutson
atchinplace.
ONTROLLINKAGEREPLACEMENT
trollinkageisonlynecessarywhen
or'otherwisedamaged.
hold-downboltsandl iftengineroom
intoholdhatchopen.Disconnectre-
vecotterpinspringclipandclevis
rtershiftlever.Removecotterpin
nelrodto crossshaft.Pedalcannow
rd.Removefourcapscrews(two
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 192/401
ARTINGMOTORANDBATTERY
gebracketstotopofclutchhousing.
wbecompletelyremoved.
e
usingandreplacefourcap screws
glinkagebracketstoclutchhousing.
e boardandattachtolinkageusing
tachlinkagerod tostartershift
llspring clipoverclevispinand
turnspringto clipandlinkagecross
ainandlowerhatch.Tightenthree
ltsholdinghatchin place.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 193/401
ITION
andinspection143
44
46
maintenance147
48
cement149
50
ION
esignitionswitch,sourceofelectrical
tor),ignitioncoil,condenser,distributor,
,andspark plugs.Allofthesefactors
ricalenergyofsufficientlyhighvoltageto
combustionchambers.
tormountedonright-handsideof
ntrifugaltypeofsparkcontrol.The unit
spiralcut gears.Lowerendofdistribu-
ngagesslotonupperendof oilpumpshaft
.109.)
is oil-filledandhermeticallysealed
sture.Hightensionterminalis protected
ichhashigh resistancetoleakageacross
agedbyelectricalleakagewhichmight
coilisto transformenergyfromlowvolt-
erator)intoenergyat sufficientlyhigh
arkplug.
sarethe mediumbywhichhigh
edintoasparkin combustionchamberof
serismountedinbodyofdistributor
stributorpoints.Thepurposeofcondenser
t arcbyitsabilityor capacitytostoreup
re.Lowtensionwires arethose
ehightension wiresarethoseinsecond-
ndenser,ignitioncoilandsparkplugs
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 194/401
ITION
tallation
lowtensionwiring toformtheignition
chanicalunitdesignedtoassistin
getosecondaryvoltage(pointmecha-
tagecurrentin correctsequencetospark
o varysparkautomaticallytoprovide
ne(centrifugalcontrol).
poftwowindingsor circuits—primary
tactpointsindistributorclose,currentfrom
throughprimarycircuit,creatingamag-
sandcore.Whendistributorpointsopen,
oesnotstop flowinginstantlybutflows
nnectedinparallelwithpoints.Condenser
pseofmagneticfieldwhichinducesavoltage
condarywindings.Thisvoltageincreases
oproduceasparkat sparkplug.
gs areused,oneforeachengine
ocombustionchamber.Plugsarecon-
ulatedcableswhichcarrysecondarycur-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 195/401
ON,6x6
6163
onSystemCircuits
ondenseristoreducedistributor
apacitytostoreupelectricalenergyuntil
butorpoints.
G
nitionsystemtrouble,themechanic
ringdiagramandkeepin mindfunda-
nitioncircuits,primaryandsecondary.
ermustalsobearin mindsymptomsusually
tioncircuitsare insomeinstancesocca-
engineoperatingsystems.
msthatcanbe visuallyandaudibly
pointtodefectsinignitionsystems;how-
ngsystemsshouldhaveroutinechecks
onsystemisat fault.SeePara.177for
."
ssymptoms,causesandprobablereme-
experiencedwithignitionsystem.
ause
eating
eCorrect146
butor
—underload
p
n
nt
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 196/401
ITION
ibutorCapSocket
auseRemedyParagraph
eplace149
gsReplace146
rloadorhigh speed
nceAdjust145
ENANCEANDINSPECTION
ouldnotonly beinspectedatregular
maintenanceoperationsshouldbeper-
keepsystemoperatingefficiently.Only
pectionofvarious unitsandaccomplish-
nanceandadjustmentscanignitionsys-
mefficiently.
eincludesoperationsondistributor,
s,andwires.Detailedinstructionson
tsaredescribedunderrespectivepara-
TENANCE
eproceduresembracecleaningandin-
pointadjustment,andadjustingtiming.
stributorcapshouldbe removedand
andout.Inspectthoroughlyforanypres-
,roundbrushto thoroughlycleanwire
.111.
pandrotor
verasdirectedinPara.172.Remove
grillebehinddriver'sseat.Place
ed,thenengagewaterpropeller.Do
Use crankingbaronpropellershf
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 197/401
ON,6x6
thCapandRotorRemoved
ributorbreakerleverfibre ison
stributorshaftcams.Disengage
urneccentricscrewuntilpointopen-
Tightenclampscrewandagain
besure ithasnotbeenchangeddur-
orandcap
ndcap.
ver
asdirectedin Para.172.
rgrille
e.
nitiontimingcannotbeover-empha-
ofvehiclewillbeseriouslyaffectedifigni-
ticularlyignitiontimingis notproperly
rdistributorhasbeenreplacedit is
stemberetimed.Procedureforinitial
grillebehinddriver'sseat.Place
ed,thenengagewaterpropeller.
hon.Usecrankingbaronsprocket
isinfiring position;atthispointnote
ngregisterswith timingmarkon
engagewaterpropeller.
minalon distributorcap.Placecap
usingand markhousinginrela-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 198/401
ITION
kingforIgnitionTiming
ocationofNo.1terminalwillbe
ed.
perlocationasdirectedinPara.148.
t(Fig.114)
ntbracketsothatmarkonblockis
anceand"R"retard.Tightencap
ock.
ounterclockwiseuntilpointsare
ockwiseuntilpointsjustbeginto
tomarkonhousing.Tightenbracket
ertimingcheckasdescribedin
Wheneverdistributorhasbeenre-
heckignitiontimingwhendistributoris
ht isrecommendedforthisoperation;
alsobe used.
etmanualcontrolbracketatmid-
g lighttoNo.1 sparkplugterminal
ntground.
tidlingspeed.
kholeinflywheelhousing.Noteposi-
teelball)in relationtopointer.SeeFig.
nterandsteelball)are morethan
gshouldbeadjusted.
114)and turndistributorhousing
pointer.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 199/401
ON,6x6
nualAdvanceAdjustment
checktimingagain.
t lamptodistributorprimaryter-
ndotherleadtoconvenientground.
rearof driver'sseat.Placetrans-
enengagewaterpropeller.Usecrank-
sprockettoturnengineover.
lyuntilNo.1 sparkplugisabout
eryslowlyand stopatexactinstanttest
terpropeller.
erinrelationto flywheelmarking.
withinfa"ofsteelball,timingmay becon-
mpbolt(Fig.114)and turndis-
ball indexeswithpointerwhenengine
hecktimingagain.
tiontoautomaticadvancecontrol,
,isprovidedwithwhichinitialsettingmay
fuelused.Bearin mindthatadvancespeci-
aredeterminedaftercarefultest and
efuel.Becauseofvariousgradesoffuel
eadjustmentofinitial settingmaybe
actoryengineperformanceandfuel
gof manualadvanceformaximum
oadtestshouldbe made,usingthe
beusedin service.Engineshouldbe
operatingtemperature.Manualad-
videsmoothengine performancewith
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 200/401
ITION
rkPlugCables—DistributorCap
hrottleatcomparativelylowvehicle
his settingmayvaryondifferent
estsshouldbe madetodeterminethe
neffortlessengineperformanceand
cessivedegreeof"clatter"or"ping."
ngdistributorclamptocylinderblock.
nderblocktoretardsparkorin oppo-
park.Tightencapscrewandroad
NANCE
sparkplugsisthe firstandprobably
oninmaintainingtheignition system.
gap insparkplugis aPrecision
eatedassuch.Propergap provides.025"
ectrodeandcenterelectrode.Whenregap-
eelectrodeonly—notcenterelectrode.Itis
ap toproperdimension,butallplugs
on.Useastandardroundfeelergauge.
e
cover
verasdirectedinPara.172.
es
ndsuppressorsfromsparkplugs.
henremovingplugs.Ordinary
mageporcelain.
dpluginto cylinderheadwith
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 201/401
TON,6x6
handtightenplug untilit"bot-
tertoone-halfturnuntil firm.
esurethey areinstalledtocorrect
1-5-3-6-2-4.Besurewires formgood
s,alsoarefullyseatedindistributor
oper methodofinstallingspark
preventwirescontactingignition
ver
asdirectedin Para.172.
IONWIREMAINTENANCE
esbetweencoil,distributorand
edwithinignition shield;therefore,wires
sture.
spectionshouldbemadeofwiring
ceoffailureshouldbereplaced.Wires
kedduetoheatorareoil soakedandswollen
ACEMENT
srevealthat distributorshouldbe
edinfollowingparagraphs.
cover
verasdirectedinPara.172.
ondarywirefromdistributorcap.
eof housingandremoveprimary
reasecupfromhousing.Greasecup
eld.
hatreplacementcanbeinstalledin
mpbracketboltandliftdistributor
enginewhiledistributorisremoved.
at timeofremoval.Insertdistribu-
ocranckcase.Turndistributorshaft
uedendofshaft withoilpumpshaft.
utorhousingshouldbetowardrear
risin correctrunningpositions.It
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 202/401
ITION
rancebemaintainedbetweenupper
t pointsshowninFig.109.Whendis-
peratingposition,lowerendofhous-
Beforetighteningclampplacefin-
mbon driveshaft.Whileholding
Besuretoequalize clearanceattop
pboltwhiledistributoris heldin
utorhousing.Grease cupislo-
.
odistributorcapin theirproper
o.1wirewhichmustbe infiring
firingposition.Attachprimarywire
butorhousing.
dinPara.145.
ver
asdirectedin Para.172.
OINTREPLACEMENT
cover
nitionshieldcoverisoutlinedin
p
ondarywirefromcap.Removetwo
aptohousingandlift capfrom
utinsidehousingandlift condenser
Removescrewattachingcon^en-
esupport.
nts(Fig.112)
utinsidehousing.Liftbreakerlever
vebreakerpointclampscrewand
oper location,witheccentricscrew
l clampscrewthroughbreakerand
reakerleverover breakerplatestud
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 203/401
ON,6x6
nderprimaryterminallockwasher.
ampscrew.Adjustcontactpoint
.144.
erlocationandattachbracketto
gcapscrew.Placepig-tailwirebe-
gandinsulator.Tightencapscrew
rely.
e shaftandturnuntilit seatsinto
sitiononhousing andsecurewith
parkplugandprimarywiresin cap
fullyseatedin sockets.Replaceigni-
ACEMENT
insideignitionsystemshieldnear
cover
verasdescribedinPara.172.
shersatterminalsandremovetwo
rewsandshakeprooflockwashers
hield.Liftcoilupand removesecond-
tomof coil.
ntosocketat bottomcoil.Replace
ashersattachingcoilbrackettoinside
apscrewssecurely.Attachdistribu-
-RedandBlackCr.Tr.)to negative
een)to positiveterminal.Tighten
ver
asdirectedin Para.172.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 204/401
NERATORANDCONTROLS
andinspection154
5
56
57
58
59
ION
controlsystemcomprisesgenerator,
ery,ammeter,andconnectingwires.Pur-
batteryfullychargedandtofurnish,when
rentforignition,lightingsystem,and
es.Onlygeneratorandregulatorarecov-
otherelectricalsectionsforinforma-
calunits.
shunt-wound,twobrushtype
gineanddrivenwith beltbycrankshaftin
mp.Generatoriscooledbyairdrawn
generatorby fanmountedbehinddrive
atrearof generatoraidsindirectingflow
hree-unittypecontainingcutout
dcurrentregulator.Theregulatoris
necompartmentpartition.
sistsofgenerator,regulatorandwir-
tleft frontsideofengineas shownin
hedtoleft-handenginecompartment
17. Filtersandcondensersusedincon-
sionaredescribedinPara.172.
drivenbyenginecrankshaftwith
terpumpandfan.As speedofengine
point,actionofgeneratorcreateselectri-
bysettingandspecificationsofregulator
urnishescurrenttovehicleelectrical
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 205/401
ON,6x6
omaticallyopenandclosecircuit
tteryasneedsrequire,controlsmaximum
andcontrolsgeneratorvoltageoutput.
owingfunctions.
elayautomaticallyclosescircuit
tterywhengeneratorvoltagerisesabove
aticallyopenscircuitbetweengenerator
orvoltagefallsbelowthatof battery.
ageregulatorcontrolsgenerator
it toriseaboveavalue determinedby
entregulatorcontrolsmaximum
ge)anddoesnotallowoutouttoexceed
setting.
G
andremediesoftrouble,whichmay
ingsystem,arelistedinfollowingpara-
auseProbableRemedyParagraph
ndhighchargingrate
fNotifyOrdnance
latorReplaceregulator158
Replacegenerator159
Cleanand tighten154
nochargingrate
ctorReplace154
f
ce
ce
otifyOrdnance
eplace159
e
placegenerator159
seat157
59
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 206/401
NERATORANDCONTROLS
ENANCEANDINSPECTION
runitsrequireperiodicinspectionand
okeepsystematpeakefficiency.Detailed
saredescribedunderrespectiveparagraphs
ttension.Correctadjustmentpro-
ctionatcenterof belt.Lowbeltten-
ndunsteadyoutput.Excessivebelt
aronbelt andgeneratorbearing.
Para.120 ifitis frayedorworn.
heckbrushesforwornconditionand
ectedinPara.157.Checkpig-tail
etheyare tight.Installcoverband.
heckbrushspringtension.Excessive
ommutatorandbrushestowear
nwillcauseareducedgenerator
ningofcommutatorandbrushes.
nasdirectedin Para.157.
spectcommutator.Ifdirty,cleanas
mmutatorisrough,out-of-round,
eneratoras directedinPara.159.
oenginecapscrews,tightenifneces-
racketboltsandtightennutsif
nadjustingarmtogeneratorcap
onsand,ifnecessary,removeand
ringforevidenceofinsulationcracks
necessary.
erandiferraticlocatetroubleand
rterminals.
t
ndexaminegasket.Ifgasketis
part.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 207/401
ON,6x6
terandDriveBeltInstallation
ringHarness
TESTS
emdifficultiesrequirestheuse of
killedpersonnel.NotifyOrdnanceMainte-
NANCE
mentscannotbeobtainedwithoutthe
ed personnel.NotifyOrdnanceMainte-
ENANCE
tioningproperly,followingadjustments
houtremovinggeneratorfromvehicle.
dofadjustingdrive beltisde-
ectionindicatesthatreplacementis ad-
or procedure.
ovescrewattachingbrushpig-tail
ension armandremovebrush.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 208/401
NERATORANDCONTROLS
ers,JunctionBlocksandWiring
dFilterWiring
s
s
arness
StarterWiring
k
ch
itchWiring
dinstall brushintobrushholder
nsttopof brush.Attachbrushpig-
crew.Tightenscrewsecurely.
yuse ofa"bedding"stone.With
diumspeed,pressstonefirmly
moveitbackandforthalongcom-
tactedbybrushes.Brushesshould
tperiod.Blowgeneratorout with
gstone,toremoveallparticlesof
yclothor sandpapertoseatbrushes.
ngtension,ToolNo.AEE-G-3,which
espringtensionwill causecommuta-
pidly.Lowspringtensionwillcause
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 209/401
TON,6x6
ut,arcingandburningofcommuta-
coverbandandinspectcommutator.
nwitha stripofNo.00 sandpaper.Do
outall dustwithcompressedair.
EMENT
yoftheregulatorunitsare damaged
operlyadjusted,replacecompleteunitwith
tioned.
sandlockwashersat"ARM,"
sonregulatorandremovewires.
asherattachinggroundwiretoregu-
kwashersattachingregulatorto
artmentbulkhead.Removeregulator
bre washersareusedunderregu-
torandbracket.
chofthefour bolts.Installregu-
with lockwashersandnuts.Install
own.Tightennutssecurely.
ockwashers,alsogroundscrew.
sfollows:
andBlackCrossTracer
dRedCheck
roundscrewsecurely.
vebeendisconnectedforrepairor
eratorshouldbepolarizedafter
dbeforeengineisstarted.Reversed
orpointstovibrateexcessivelyand
neratoriscorrectlypolarizedby
umperlead between"Bat"ter-
beforestartingtheengine.This
eofbatterycurrenttogenerator
sgeneratorthecorrectpolaritywith
harge.
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 210/401
NERATORANDCONTROLS
EMENT
revealthat generatorisdefectiveor
mpleteunitshouldbereplaced.
andwireat"FLD"terminalongen-
washer,condenserpig-tailandarma-
longenerator.
enser
washers,groundwireandcondenserat
l.Removetwoscrewsandfourlock-
generatorhousing.Layfilterand
washerandflatwasherattachinggen-
shersandboltsattachinggenerator
atorcannowbeliftedup tocom-
eandinstalltwobolts (oneeach
ountingandbracket.Installlock-
anddrawuptemporarily.
pulley,crankshaftpulleyandgen-
ratortoadjustingarmusingflat
apscrew.Adjustbelttensionas
efinaltighteningof mountingbolt
nser
usingusing twoscrews.Shake-
eusedbetweengeneratorhousing
of screw.(SeeFig.125,Para.172.)
andgroundwire(No.10black)to
crewwithshakeprooflockwashers
andunderhead ofscrew.
wireandarmaturewire(No.10
ongenerator.Attachfieldwire
k)to "FLD"terminalongenerator.
securely.
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 211/401
ON,6x6
vebeendisconnectedforrepair
eneratorshouldbepolarizedafter
dbeforeengineisstarted.Reversed
orpointstovibrateexcessivelyand
neratoriscorrectlypolarizedby
umperlead between"Bat"terminal
estartingtheengine.Thisallows
erycurrenttogeneratorwhich
ratorthecorrectpolaritywithrespect
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s
_ u s e # p d - g
o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 212/401
HTING
andinspection163
4
ustment165
166
acement167
placement168
andtaillampsreplacement169
placement170
171
ION
sofserviceheadlamps,blackoutdriv-
rlamps;serviceandblackouttailandstop
mpsandactuatingswitches.
eadlamps,mountedonrightandleft
oublefilament"sealedbeam"type.These
nmainlightswitchis inserviceposition.
ontrolsupperandlowerbeams.
Blackoutdrivinglampismounted
headlamp.Lampiscontrolledwitha
trumentpanel(marked"BODrive")
acedin blackoutposition.Thislamp
eamto permitlimitedilluminationfor
nditions.
s.Blackoutmarkerlampsare
deof eachheadlamp,andareilluminated
his inblackoutposition.Duetocon-
mis notvisiblefromabove.Purposeof
ofvehiclefrominfront.Lampsincorpo-
ensanda coloredfilterwhichdiffuseslight
ilandStopLamps
nsistoftwounits:left-handrear
katleft ofwinch,incorporatesacombina-
ghtintheupper portionandblack-
ortion;right-handrearlamp,locatedon
h,incorporatesablackoutstoplampin
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 213/401
ON,6x6
mFuse
ackouttaillightinthe lowerportion.
kouttaillampisdesignedtoproduce
msaredirectedsothat whenonevehicle
pecifiedsafedistance,thetwobeams
Thus,a driverisableto maintainthe
vehicleswhendrivingunderblackoutcon-
ackoutstopand taillightsisdiffusedso
visiblefromabove.
.Threesnap-intypelightsare
nelandilluminateinstrumentsand
el.Beamofeachlightis shieldedwitha
ngswitchesincludemainlightswitch,
ch,andpanellightswitchon instrument
ftofclutchpedal;stop lightswitchmount-
erationofmain,blackoutdrivingandpanel
ra.12.
G
ylampin systemfailstolightwhen
ollowinggeneralprocedureapplies:
charged.
r switchesareturnedon.
lb andreplaceasrequired.
rcuitfor shorts.
ovesit istobeinoperative.
(Fig.118).In theeventcircuitis
alfuse,lightswitchshould beturnedoff
shortinsystemdeterminedandcorrected.
plights failtofunction,evenafter
ncheckedandtested,troublemaybe in
licmastercylinder.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 214/401
HTING
ENANCEANDINSPECTION
eandinspectionoperationsasoutlined
MaintenanceandInspection"shouldbe
theintervalsstated.
onfromlampsinsystemit isimpera-
begiven tothefollowingoperations:
Lampbulbsmust notbeblackened
emaintainedatthe bulb.Lowbattery,
tactsinwiringsystem,andpoor ground
ein voltage.Checkwiringandconnections
yproperlycharged.Besurebatteryis
hatwiringbetweengeneratorandbattery
bulb burnsoutreplacebulborsealed unit.
ylensesabsorb alargeamountof
aselightoutput.Lensesareeasilycleaned
cleaner.Insideofsealedbeamunitlenses
selensissealedto reflector.
edifferenceofafewdegreesin
eadlampsor blackoutdrivinglampwill
esofthelightbeam.Theaimingadjust-
dbe checkedperiodicallyorwheneverthe
reflectors.Asprung orbentre-
m,makingit impossibletocorrectlyaim
ly remedyistoreplacereflectoror
fstoplamps donotilluminate
ootpedal,makesurethatbulbs arenot
witch.Alsocheckwiringforshort.Test
ulicmastercylinderundercentersection
oorboardsasfollows:
voltmetertoeachterminalofswitch.
tershouldreadbatteryvoltage.
adingshouldbe "0."
ckcorrectlyineithertest,replace
eadedinto mastercylinderunitandcan
nectingwiring.'
MENT
amshouldonlybeusedonhighway
hingvehiclesarenear.Upperbeamillumi-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 215/401
ON,6x6
mingChart
rtheraheadthanlowbeam.However,it
gher,whichinterfereswith anapproach-
rdepressedbeamshouldalwaysbe
nothervehicleandwhendrivinginwell
edbeamwillfurnishadequatelightto
roachingvehicle.Lowerbeamisobtained
tch(leftofclutchpedal).
rationsmustbedoneaccuratelyto
tbeams.Whenaimingheadlamps,light
.Thisconditionisusuallycausedbya
uiresreplacementofsealedbeamunit.
ngordentedby carelesshandling.
cedure.Headlampscanbeadjusted
thaheadlamptester;however,ifthis
imingPattern
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 216/401
TING
ew
,adjustmentcanbemadeasfollows:
oorso thatheadlampsare25 feet
face,preferablyoflightcolor.Awall or
eof thevehicleshouldbeperpendicular
eonverticalsurfaceatheightof lamp
9.Locatepointson thishorizontallineon
eofvehicleintersects.Measuredistance
ddividethisdistanceequallyoneither side
twoverticallinesdirectlyaheadof each
tbeaminheadlampsand coverone
.
debowcompartmentandaimlamp so
swithhorizontalandverticallines as
htennut securely,takingcarenotto
atternonverticalsurface.
overits beamandproceedinsame
p.
LAMPADJUSTMENT
adjustablehorizontallybutnot ver-
justaimof lightbeamsobeamillumi-
aspossibledirectlyaheadofvehicle.
cedure
glight beam.Loosenlampmounting.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 217/401
ON,6x6
eckplatesufficientlytoturn lamphori-
breakcircuit groundandextinguishlight.
ghtbeamwill illuminateasmuchaspos-
of vehicle.Tightenlampmountingstud
gingadjustedpositionoflamp.
EMENT
emoval(Fig.121)
Loosenwingnutsonhold-downbolts,
erclampsandraisecover.Frominsidebow
wiringatjunctionblockterminalsandre-
teachlamp.
etfrombowdeckplatesowiring can
teachheadlamp tofreemountingstud
eand removelamp.
stallation—(Fig.121.)
o positionwithmountingstudin-
ntingplate.Threadwiring throughhole
bbergrommetintoplaceinplate.
ytojunctionblockterminalsas
SectionXVIII,"ElectricalSystem—
tudnutat eachlampmountingstudin-
dthenadjustheadlampaimingas out-
ebowhatchcover,swinghold-downbolts
ndtightenwingnutson hold-downbolts.
mUnitRemoval.Wheneverbulbof
it isnecessarytoreplacecompletesealed
nitis madeupoflamplens,reflectorand
herina unit.Removalprocedureisas
mpscrewatbottomoflamplensand
movethreescrewswhichattachsealed
lamphousingandremovering.Pullsealed
nd disconnectprongsofbulbfromwiring
mUnitInstallation
dbeamunitbulbinwiring plugand
ositionin lamphousing.Installsealed
dattachwith threescrewstolamp
ng,clipengagingslotat topoflamp
locatedatbottomoflamphousingand
.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 218/401
HTING
LAMPREPLACEMENT
AssemblyRemoval—(Fig.122).Driv-
separatebracketwhichisattachedtobow
emovedwithoutlooseningbracketfrom
nthatchcover.Loosenwingnutson
tstodisengagecoverclampsandopen
wirestodrivinglampatjunctionblock
partment.Loosenrubbergrommetfrom
anbe pulledthroughplate.Unscrewlock
udat mountingbracketandremovelamp.
AssemblyInstallation—(Fig.122).
osition withmountingstudthrough
alllocknutandwasher.Threadwiring
and pressrubbergrommetintoplacein
ytojunctionblockterminalsas
SectionXVIII,"ElectricalSystem—
rivinglampaiming.
swinghold-downboltstoengage
wingnutsonhold-downboltssecurely.
SealedBeamUnitRemoval.Whenever
outitis necessarytoreplacecomplete
beamunitconsistsoflens, reflector,bulb
ealedtogetherina unit.Removalproce-
Fig.122.
retainingscrewatbottomoflamp,
eamunitatbottomof lampandraiseup-
ousing.
ctorexposed,useascrewdriverto
iningring whichholdsealedbeamunit
ovesealedbeamunit fromring.
ofbulbfrom wiringplugandremove
dwire.
SealedBeamUnitInstallation
groundclip onsealedbeamunit
gsof bulbinwiringplug.
nto positioninmouldingring,put
reflectorand completeassemblybyusing
retainingringspringsunderflange of
andringsassemblyinlamphous-
agingslotat topoflamphousing,andin-
gscrew.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 219/401
ON,6x6
gIjght
Screw
AMPSREPLACEMENT
sRemoval—(Fig.123).
nthatchcovey.Loosenwingnutson
tstodisengagecoverclampsandraise
onnectwiringatconnectorandremove
dereachlampfrom insidebowcompart-
oclear mountingstudatdeckplateand
sInstallation
osition withwiringandmounting
ate andpositionlocatingdowelonlamp
ckplate.Screwlockingnut onmounting
dplugwireintoconnectorateachlamp.
BulbAndLensRemoval—(Fig.12:>).
wandtwistlensandcoverto loosen
ovelens andcoverassemblyfromlamp
nhousing.
BulbAndLensInstallation
lamphousing.Putlensand cover
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 220/401
HTING
erLamp
ngagelockrivet inholeintop ofhousing,
therivetinhousingand installretaining
VICESTOPANDTAILLAMPSRE-
blyRemoval—(Fig.124).Removal
mpsis identical.
nnectorslocatedatbackoflamp
e.Removenutsfromtwomountingstuds
mpclearofmountingbracket.
ServiceStopandTailLamp
ht Unit
t
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 221/401
ON,6x6
blyInstallation
ainstmountingbracketwithmount-
bracketandinstallnutsonstuds;tight-
wiringatconnectorsatrearoflamp.Be
perly.RefertoSectionXVIII,"Electrical
ectwiringhook-up.
oval—(Fig.124).Bulbissoldered
etaineriscrimpedoverlensandfitter to
enbulbis burnedout,itis necessaryto
.Thisappliestoboth rearlamps.
nit coverattachingscrewsandre-
utunitout ofsocketinlamphousing.
lation
itinlamp housinginsertingbulb
bulb andlensunitcoverin placeonlamp
ngscrews.
LAMPSREPLACEMENT
edininstrumentpanel andreplace-
dinPara.221.
WITCHES
esformainlightswitch,blackoutdriv-
mentpanellamps switcharedetailedin
oval
dcentersectionofdriver'scompart-
sstohydraulicmastercylinder.Disconnect
chat switchmountedintomastercylinder
tchassemblyfrommastercylinderoutlet
ation
yintohydraulicmastercylinderout-
estostop lampswitchterminals.Install
ompartmentfloorboardsandfastendown
al
menthatchcover.Loosenwingnuts
boltsawayfromcoverclamps,raisecover
with hold-upchain.
itchterminalsatswitchmountedin
ertoe-board.Removetwoscrewswhich
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 222/401
TING
andwithdrawswitchfromholeintoe-
ion
toe-boardandattachwithtwo
switchterminals.RefertoSectionXVIII,
g"forproperattachmentofwires.
menthatchcover.Unfastenhold-up
swinghold-downboltstoengagecover
utssecurely.
on,checkeach
movebeamunitand
heckconditionof
nections.Wipewires
tainthatgrommets
wherewirespass
dy.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 223/401
S
uppression172
ERENCESUPPRESSION
esuppression(radiosuppression)is
sturbancesfromtheelectricalsystemof
terferewithproperreceptionofradiosig-
fvehiclelocation,byhighlysensitive
noiseinterferencemaybebasically
—IgnitionSystem,includingcoil,distribu-
ratingSystem,includinggeneratorand
givenoffbythesethreegroupsduring
temofvehicleareactuallyradiatedor
orsignals,thatinterferewithany receiv-
operatingin thevehicleorinits vicinity.
uppression,therefore,involvesthesup-
their sources—orconfiningthemwithin
tbepickedup bytheantennaofa radio-
shedbytheuseof sparkplugsuppres-
andcondensers.Inadditionto theuseof
prooflockwashersareusedwhenmounting
torandassociatedparts.
estingradiosuppressionunitsre-
nstrumentsandskilledpersonnel.Notify
rsonnelwhenradioreceivingorsending
ed.
placement
ondensers,notecarefullylocationof
thatthey canbeinstalledinsame
ng.
ndensersiti sextremelyimportant
ersbeusedunderheadofcapscrews
enunit andparttowhichit isbeing
erminalsmustbetighttoprovidea
mounting.RefertoFig.125for loca-
sers.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 224/401
S
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 225/401
ON,6x6
placement
mcover.Loosencrankcaseventi-
.Removetwostudnutsattopofrocker
cientlytoclearflangeonignitionshield
cover.Removefourthumbscrews
Covercannowbeliftedfrom shieldand
verin itsproperposition.Press
ur thumbscrews.Tightenscrewssecurely.
cover.Locatecoverinits proper
hholesin cover.Installnutsandtighten.
seventilatortubeconnection.
ment
cover.Instructionsfortheremov-
e outlinedinPara.172g.
emovedistributorasdirectedin
.Removefivescrewsandlock-
ovalvepushrodcoverand cylinderblock.
cateshieldin itscorrectposi-
cover.Install fivecapscrewsandlock-
ndvalvepushrodcoverto cylinderblock.
ldistributoras directedinPara.
gnitiontimingas directedin
ver.Install ignitionshieldcover
istsoftwounits,the registeringunit,
nel,andtankunit,whichis mountedinfuel
wiringsectionofthis book,circuitforthis
itionswitch.Variouspositionsoftankunit
ance,permittingcurrenttoflowtoacali-
isteringquantityoffuelin tank.Referto
or electricalcircuitbetweentankunit
ge.
estingfuelgaugeunitsand wiring
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 226/401
S
ntsandskilledpersonnel.NotifyOrdnance
ot registeraccurately.
panelgaugeisdescribedin Para.221.
ndsterndeckfrontplate.Procedure
s fullydescribedinPara.66.
e
andremovewire.Removefivescrews
ggaugetotank.Liftgaugefromtank.
opening,usingnewgasketbetween
escrewsandlockwashersattaching
ewssecurely.Attachwiretoter-
rely.
plateandsparewheel
hesepartsisfully describedin
ht-handsideofforwarddeckandis
rrentforoperationofhornis supplied"by
howninFig. 97.
shersattachingwirestohornandre-
shersandboltsattachinghornto
hornfrombracket."
cketandinstall twobolts,lock-
nutssecurely.
rminalsandinstall lockwashersand
ssecurely.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 227/401
ng177
ng178
andinspection179
nance181
183
5
6
ntenance187
ION
alve-in-headtypeconventionallymounted
bleforremovalandservicepurposesthrough
atch.Generaldataontheengineis itemized
ES
alcoversonly thebasicengineanddoes
ineaccessoriessuchas carbureter,water
eneratingsystem.Followinglistorindex
anualdescribingvariousengineaccessoryunits.
x
atorXVII
yXIX
elpumpandfuelfilterXXVII
E-SHOOTING
ublesonenginepower plantarecaused
ficiencesoftheenginemechanismproper
nalliedaccessorysystemsoftheengine.
ndsoftrouble-shootingchartswhichapply
inepowerplant.Onetrouble-shootingchart
ngfailuresoroperatingdeficiencies.The
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 228/401
versmalfunctionsofmechanicalcomponents
ptomsandcausesitemizedinboth chartsmay
ver,asageneralrule,theoperationtrouble
usedbydriverandcrewwhilethe mechani-
8)willbe usedbymaintenancepersonnelto
hanicalfailures.
otingTable.Engineoperatingtrouble
reegeneralconditions.Theseare,(1)failure
3) unevenrunning.Chart,Fig.126,
stodeterminewhichconditioninTable
auseRemedy
park
charge(zeroreading)
rned
ch
gnition
onto
-
vely
adjust or
utor
d-
starter
dtighten
ng
oil
rcon-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 229/401
ON,6x6
— MISFIRES— ORRUNSUNEVENLY
ble
e
ONDITIONCONDITION
gineor
ieldCoil
Worn
age
ble-SnootingChart
ause
or
d
normaldischarge
exists
i-
y
o
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 230/401
ause
on-
ough-
y)
p
toror
dSpark
tand
oughex-
ating
bureter
er and
old
oneor
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 231/401
ON,6x6
auseRemedyParagraph
d?Checkenginetuneup180
and adjust;use
very
ugis
e
plugis
6
ckedReplace146
ng
nReplace147
veReplace144
om-
yl-
ingspeeds
ace146
st 145
ser
....149,150
nts
rreplace.... 144
eplace181
lace181
lace181
eplace181
1
essionService180
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 232/401
outeProbableRemedy
onathighspeed
dtoo
breaker
gs
k
Con-
rCon-
LE-SHOOTING
ootingtablecoversingeneral,symptoms
ntheengine suchasconnectingrods,
ause
ootingChart
cking
orn
roken
enor
ssively
ption
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 233/401
ON,6x6
ause
between
roken
irty
m
s
ositsat
s
hin
e
ding
d-
nd
8
8
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 234/401
ause
tion
rn,or
fitted
dwith
undor'
badly
ting
olingsystem18
cosity
SectVI
orrectamount..SectVI
dsealsNotifyOrdnance
Correctpoordriving
ssive
on
driving
parkknock
secorrectfuel
Adjust145
ad-
closeReadjust181
ositsRemovecylinderhead
allnewsprings...181
erly—
nce
ndi-
op-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 235/401
ON,6x6
auseRemedyParagraph
cosity
SectVI
stuckClean,test spring,re-
edRemoveandclean
ndcon-
nceNotifyOrdnance
rto
ewassembly.185
lace221
dpistonwear
VI
drefillSectVI
cosity
SectVI
olingsystem118
perly
y
okenNotifyOrdnance
ervice199
too
articu-
ordriving
ildilu-
n-
ngfailure
VI
o Item(9)
cosity
SectVI
ghNotifyOrdnance
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 236/401
ause
ted
cting
gn-
ution
em
cosity
t
ilure
cosity
rnal
re-
ted
shaft
outof
ution
8
tVI
tVI
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 237/401
ON,6x6
ENANCEANDINSPECTION
vemaintenanceoperationsgenerally
epowerplantembraceallinspectionpro-
gineaccessoryorrelatedunits.Reference
V,"PreventiveMaintenanceandInspec-
ainingto engineanditsaccessoriesand
ttheintervalsdesignated.
inspectionandadjustmentprocedure
e ignitionandfuelsystems.Periodictune-
din Fig.127shouldbefollowedifsatisfactory
ousoperationaretobeobtained.Satisfactory
poperationscannotbeexpectedifa sys-
dheredto.Performingtune-upoperations
refullyfollowingfactory-recommendedclear-
satisfactoryresultswillbeobtained.Inorder
lthefollowingoperations,regulartune-up
ressiongauge,vacuumgauge,voltmeter,
.,arenecessary.
orestartingwithtune-upprocedure,
onshouldbe made,foranenginewithout
allcylinderscannotbesuccessfullytuned.
pendsuponcrankingspeeds,enginetempera-
dtheconditionoftheengine.If thereading
sionisreasonablyhighanduniformfor all
essuremaybeconsiderednormal.Makecom-
ingmanner:
.
f,"pullhand throttleallthewayout.
mengine
geinsparkplug holeinoneengineand
thstarting motor.Notehighestcompression
eisbeingcranked.Performsameoperation
dreading.
fapproximately110poundspercyl-
onwithinapproximatelyfive(5)pounds
ssionistoolow,thecause(eitherpistonrings,
sket)shouldbecheckedandcorrected.Loss
stonringscanbedetectedbypouring alib-
spark plugholeontopof piston,allow
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 238/401
UpCycleChart
eadaroundpistonandproceedwithsecond
Ifcompressionincreasesmateriallyincylin-
a defectivepistonseal.Anextremelylow
indersmightindicatealeakycylinderhead
seating.
ure(Fig.127)
arkplugs
y
spectdistributorcap
nrotor
ect,clean,andadjust
tightenconnections.
ndadjust
djust
ureteradjustment...
rvice
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 239/401
TON,6x6
ervice208
MAINTENANCE
tenanceembraceslashingoradjusting
es;periodictighteningofcylinderheadbolts;
ndvalvemechanism.Procedureswhichfol-
ntenanceoperationsinlogicalsequence.
alvelashorclearancebetweenintake
pectiverockerarm,isa procedurewhich
eriodicallyorasconditionsdemand.Clearance
esis.012 inchwithenginewarm.Adjust
r:
lvelashadjustment,enginemustbe
ormalizeexpansionofvalveoperating
operatingtemperatureshavebeen
fter15minutes),allowenginetoidlein
velashadjustmentoperation.
tilatingtubeatvalvecoverand remove
boltnuts.Removevalvecover.
(Fig.128)
allstudnutand insert.012inchfeeler
mandvalve.Adjustrockerarmball
eisindicatedbyfeeler gauge.After
nobtained,tightenrockerballstudnut,
geagaintomakesure adjustmenthas
teningnut.Repeattheseoperations
ouldbeadjustedwithengineat normal
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 240/401
dandComponentParts
gcertainthatvalvecovergasketisin
mutilatedin anymanner.Installthe
ndconnectcrankcaseventilatingtube.
eMechanismAssemblyRemoval(Figs.
arytoremovecylinderheadandvalvemecha-
eplacevalves,springsand reconditionvalves
derheadassemblycanberemovedasaunit
ump,fanorotherengineaccessoriesexcept
,asdescribedinfollowingoperations.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 241/401
TON,6x6
or
oPara.
ieftube
nnect
e2
ctwind-
brake
efrom
eck
en-
ver
old
,hand
daccel-
bureter.
pboltat
nuts
haust
exhaust
onnec-
ldand
embly.
m
ead,also
cylinder
aturether-
inder
ankcaseoilfiller
bly(2
ndre-
erandattachingbracket
at
sionshield.Disconnectignitioncables
mbracket.
er tubetoblockbracket.
cover.Removevalverockerarm
ssembly.Liftvalvepushrodsoutof engine.
lockboltsandcarefullylift cylinder
Assembly
erheadandvalveassembly,makesure
nism
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 242/401
odofCleaningCylinderHead
e cleanandfreefromcarbonanddirt.
et.Besure thatgasketisinstalledwith
cylinderhead.
emblyinplaceandinstall bolts.
oltsin theordershowninFig.132.
houldbeusedto obtainuniformtightening
Fig.133). Usetorquewrenchthefactory
0-70ft.lbs.Tightenboltswhilecylinderhead
onnections,runengineuntilnormaloper-
tainedandgiveboltsa finaltighteningwith
not beinserteduntilaftercylinderhead
sis necessarytoavoiddamagingpushrods.
ighteningofcylinderheadboltsis
peration.Underorover-tighteningofthese
sit frequentlyresultsindistortionofcylinder
ylinderheadgaskets,andusuallyleadsto
and shaftascompleteassembly.
overandgasket.
rtubebracket.
bracketwithshakeprooflockwashers.
stosparkplugs.
onshield.
acketassemblyandoilconnectionat
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 243/401
ON,6x6
derHeadBoitswifhTorqueWrenchin
ertube andbreatherassemblyto
peraturethermaluniti ncylinderhead.
ontofhead.
exhaustmanifoldgasketswithmani-
bly.
dthrottlerod,chokerod andfootfeed
iperline,andbrakepowercylinder
ifold.
cleaner(Para.199),warmupengineand
rheadbolts.
8).
mpanwith gasket(with2valvecover
entilatortubetovalverockerarmpan
g.
eWrenchonCylinderHeadBolts
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 244/401
filterClement
ypefilterisused. Partoftheoil passing
haftoilline isdirectedthroughtheoil filter
eabsorbed.Oilfilteredinthis manneristhen
eoilpan throughoilpumpmounting.
anceofa continuousandefficientfunction
nspectionandfrequentreplacementofthe
elementchangingperiodsaredirectlyrelated
ponentParts
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 245/401
ON,6x6
typeand qualityofoilused,severityof and
tis, therefore,impossibletorecommenda
atwillmeetall typesofservice.Vehiclesoper-
e renewalsmorefrequentlythanthosewhich
ditions.Whiletheoilfilter willadequately
ngthe oil,theelementshouldbereplaced
dwiththesesubstances,regardlessofmileage.
cementProcedure(Figs.134and135)
inscoverandremovecover,gasketand
toremovesolidmatterandwaterwhich
mp locatedinthebottomofhousing.
essary.
andgasket,carefullyinspectgasketand
tion.
ACEMENT(Fig.136)
ylinderheadandvalvemechanismcan
enginecompartmentwithenginehatchcovet
entprovidesadequateaccessibilityforservice
lingunits.However,forthoseserviceswhich
t isrecommendedthatpowerplantbecom-
cletoprovidemaximumaccessibility,safety
cetobeperformed.
efollowingprocedureprovidesfor
chandtransmissionthroughenginehatch.
dbe notedthattheprocedureoutlined
fradiator,steeringgear,transmission,
uenceofthefollowingoperationsmaybe
ocalconditions.
dandconnections
erandclampit securelyagainstwind-
nutswhichattachupper andlower
oveeightboltsandnutswhichhold endsec-
t andremovebothsectionsofshroud.
hattachfantopulleyand removefan.
yremovingdraincocksat right-hand
t left-handrearsideofcylinderblock.
randlowerhoseconnectionsatradiator
hoseclamps.
ngtoandfromfilter byloosening
boltswhichattachfiltertoframebracket
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 246/401
val
otorcable
rapfrombatteryterminaltoprevent
ttery.Removenutandlockwasher
ondenserwiresandbatterycableto
dremovewiresandcable.
controls
ntrolrodfrombell crankatendof
vingcotterpin.Disconnectthrottle
romcarbureter.Removeaircleanerto
ovalandplaceacoverovercarbureter
electricalfittingsfromleft-handsideof
eraturegaugethermalunitretaining
movethermalunit.
exiblehoseattoe board,usingtwo
ngofhose.
thornbyremovingscrew.
andregulatorwireharnessatjunction
wiperhoseatintakemanifoldtube.
pe
omflange attachingexhaustpipeto
pipeawayfromengine.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 247/401
ON,6x6
driver'scompartment
ectionsin driver'scompartmentto
accessoryunits.
omtirepumpfrontsupport boltsand
orropearoundtirepump andseat
ayfromtransmissionduringremoval
ffsupport
chpowertake-offsupporttotransmis-
woboltsatupper sideofpowertake-off
on).
akepedalandsupport
pinfromclutchpedalconnectinglink.
rodandoperatingleverbyremoving
ofpedalrod.Removehairpinlockat
e clutchoperatingleveroffshaft.
spinwhichattachesbrakepedalto
ltswhichattachpedalsupportto
swhichattachsupporttoclutch
portandbrakepedal.
evercrossshaft
ntrolrodatcrossshaftleverby remov-
emoveretainingboltsand nutsattach-
transmission(onebolt onleftsideand
ghtside)and removecrossshaft,lever
bly.Thisassemblycanberemoved
brackettoclearlowerstud onright-
lercontrollever,crossshaftandbrackets
ertransfercasecontrolrodsatcross
tterandclevispins.Disconnectwinch
e-offbyremovingcotterandclevispin,
mwinchcontrolleverto transmission
movecotterandclevispinattaching
owater propellercontrolcrossshaft
vehairpinlockatright-handendofcross
dbracketcrossshaftandleveras an
chcontrollevertotransmissionstud
emainingnutwhichattachesright-hand
dremovebracket.
ntotransfercasepropellershaft
sfromflangesat eachendofpropeller
sleeve,slideshaftintoslipjoint until
dremovepropellershaft.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 248/401
utchhousing
uumlineatright sideofclutchhousing
dpullinghose offendofline.Discon-
crossshaftbyremovingcotterand
veshaftfrompowertake-off
take-offyoke,thenliftstop collar(snap
ftsplinesandslidering backonshaft.
take-offshaftusingaleadhammerto
ncover
attachtransmissioncovertotransmis-
erandgearshift leverasanassembly.
cleanclothtoprevententranceofdirt.
ortbolts
ortandleft andright-handrearsup-
ompartmentcarefullytomakesureall
weenpowerplantandhullhavebeen
rhooksandattachchainfalls. Asan
offsetthehazard ofengineslipping
at whichitisremoved,itis recom-
eusedin additiontoenginelifter
ows:
esand moveitslightlyforwardto
ckets.
erplanttowardright-handsideof
ermitpowertake-offtoclearsteeringgear
raisefront ofengineupwardintohatch
roximateangleillustratedinFig.165,
gineupwardthroughhatchopeningand
wn untilitclearstoeboards.
roughhatchopening.
Procedure.Itisimportantthatpower
horoughinspectionbeforeit isinstalledin
thenmoreaccessible.Thefollowingitems
nance).Iftheyshowtheslightest sign
rankshaftrearoilseal, clutchfacings,
mspring,retractingsprings,releasebear-
g.Transmissioncovermustbetakenoff
ntthroughenginecompartmenthatch
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 249/401
ON,6x6
nginsulators
nsulatorsandreplaceiftheyare oil
verinsulatorsin positionsasshownin
hicle
proximateangleillustratedinFig.136,
necompartmentandholdrearof power
onclearstoeboards.
untilmountingbracketsareover
ghtenmountingbolts.
Mounting
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 250/401
ver
ver
ethatnoforeign materialisincaseand
rationswithutmostcleanliness:
earsmakingsuregearsareplacedin
39.Placeshiftleverin neutralposition.
ralposition,shiftforksandshiftlug willbe
eachother.x
transmissionandinstallcover,making
agecollarsonsliding gears.Firstandreverse
gerockerlugwhichis fittedtoleft-hand
attachcoverto transmission,placing
headofforwardleft-handbolt. Checkshift
ons.If leverdoesnotworkproperly,remove
rceoftrouble.
fttopowertake-off
e-offoutputshaftandslideforward
crewinyokeand placesnapringin
fromdriver'scompartment
uumlingsatrightofclutchhousing
htenhoseclampbolts.
dto crossshaftusingcotterand
rolrodinbellcrankat endofstarter
cotterpin.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 251/401
ON,6x6
ansfercasepropeller shaft
nd installpropellershaftbetween
dtransfercase,installandtighten four
ontrollever,crossshaft andbrackets
verstudsontransmissionand secure
rear studonly.Installleft-hand
verasanassemblyand attachtotrans-
levertotransmissionstud.Installhair
ft.Attachpowerplantstabilizerrod
djustasdirectedin Para.277.Install
udandattachto powertake-offwith
ectwaterpropellercontrolrodsto
erandclevispins.
assembly
emblyoverstudontransmissionand
oleinleft sideandtwoboltsand one
ission.Connecthandbrakecontrol
ngcotterandclevispin.
pedaland support
pedaltotransmissionandclutchhous-
smissionandtwoboltsatclutchhous-
rendof shaftandinstallhairpin lock.
pedalcontrolsrodstopedalsusing
nectbrakepedalpull-backspring
sionfromwaterpropellertransfercase
support
rttopowertake-offandtransmission
ofsupport.
owaterpropellercontrolcross shaft
sdirectedinPara.290.
e
sketflangebetweenexhaustpipe
placeand installthreeboltsandnuts
nifold.
onlefthandsideofengine
cessiblefromenginehatchopening:
tertemperaturegaugein openingin
etainingnutsecurely.
perhosetointakemanifoldtube.
in SectionXVIIIandconnectgen-
tjunctionblock.
rn.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 252/401
blelineat toeboardusingtwo
ngofline.
okecablesatcarbureter.
onrightsideofengine
ndenserwiresandbatterycableover
udandinstalllockwasherandnut.
mebracketusingtwobolts,connect
filterandtightenflangenutssecurely.
and connections
ourbolts andlockwashers.Connect
osesto engineandradiatorand
nstalldraincocksandfill coolingsys-
zeandsee thatallconnectionsare
ttachlowerradiatorshroudsectionto
installuppersectionand boltthetwo
ncenoisesuppressionconnections
kesure thatallitemsofr adionoise
ENT
ctas areservoirtoholdand receive
icatesengineinternally.Itactsasa sump
sits oiltodistributeandcirculatesthrough
reprovidedatfixedpoints topreventsurge
hroughacoveredbasket-shapedfine-mesh
byaninvertedcupwhichpreventssurgeof
mponents
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 253/401
ON,6x6
oair. Wheneveroilpanisremovedforclean-
eenshouldalsobe removedandcleaned.
g.140)
bly
ectedinPara.183.
thoroughlydrainedofoilbefore
gscrews.Removeoilpanattaching
mcrankcase.Oilintakescreenmay
aningpurposesbydetachingretain-
nsideofoil panthoroughlyand
crankcaseandoilpan.Do notover-
areretainedin front,andrearmain
acto holdgasketssecurelyonunder
gasketdirectlyon oilpan.Install
allend piecesofcorkingrooveof
ndinsertafewscrewsto holdpanin
mainderofscrews.Makecertain
ankcasesquarelyandthatallscrews
MENT
ypepumpandi smountedintheleft-hand
essibleforservicing(screen)andreplacement
moved.
emovedfromenginecompartment
83.Makecertainthat oilpanhasbeen
dinPara.184. Disconnectcrankcase
easshowninFig.141.
crewwhichretainsoilpump housing
housing.Withdrawoilpumpasshown
n
ssembly,makecertainthatmesh
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 254/401
umpandOilLineasanAssembly
ycleaned.Screenmaybereadily
ainingwireoncoverandwithdrawing.
bly
nplace asshowninFig.141.Do not
vely,asthismaycausedistributorshaft
rewlocknut istight.Installoil pan
y
ochassisasdirectedin Para.183.
ubricantasindicatedinSectionVI,
elat dipstickandif allconnections
at gaugewithenginerunning.
MENT
ifoldsareeachaone-piececasting
inderhead withpilotrings,gaskets,studs,
niformassemblyattachmentgroup.The
sachannelthroughwhichtheresiduegases
dawayfromtheengine.The intakemanifold
deof heatingandfeedingthevaporizedfuel
alve.Themostimportantadjust-
maintainingpropermanifoldtemperatures
foldheatcontrolvalvefor seasonaloperation.
valveasshownin Fig.142consistsofalever
dinexhaustmanifold.Thisbutterflyvalve
umeofhotexhaustgases throughtheheaf
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 255/401
ON,6x6
tControl
nifold;therebyaidsinfuel vaporizationfor
djustments(Fig.142).Duringnormal
valveshouldbeor anin"ON"position.
atherwithheavyloads,athighspeeds,or
uldbein "MEDIUM"position.Thisposi-
uringmildweatheroperationwithsmall
warmweather,orduring mildweatherwith
s,valveshouldbe closedin"OFF"position.
r:
nsetscrew.Movelevertodesired
orecessinmanifoldandtightenlocknut.
edure.Theintakeandexhaustmani-
, aftercomponentpartshavebeendiscon-
mtopof carbureter.
lerod,acceleratorthrottlerod,and
nkcaseventilatortubefromvalverocker
kcaseventilatortubefromcrankcaseven-
rewventilatorvalvefromintakemani-
akelinefromintakemanifoldadapter.
kemanifold.Remove3boltnutsfrom
austmanifold.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 256/401
s,fourmanifoldwashers,andfourmani-
epilotringsoutof cylinderheadblockintake
omstudsthatextendthroughflangesex-
of intakemanifold.
sextendingfrombottomofbutterfly
foldthroughexhaustmanifoldandanchorin
fuelchamber.Separateexhaustandintake
ect.
mcylinderheadports,betweenexhaust
erofintakemanifold,alsocleanpilotrings
lotring seats.
cedure
assembleintakeand exhaustmanifolds
nuts).Installpilotringsin intakeportsof
ewgaskets.Carefullyliftmanifoldassembly
ourmanifoldwashersandnutshandtight
foldclampsandstud nuts.Tightenall
formmannertoavoidleaksandheat
gasketbetweenexhaustpipeflangeand
exhaustmanifoldandexhaustpipeflange
ightenedinuniformmanner.Installadapter
elinetointakemanifoldadapter.Screw
manifoldadapter.Connectcrankcaseventi-
veadapter.Connectventilatortubetovalve
celeratorrod,handthrottlerod.Install
nutsand lineconnections.
TIONMAINTENANCE
caseandremovaloffueland water
reaccomplishedbycirculationofairactuated
ocrankcasebreatherfilterat oilfillertube
ghengine,isdrawnupwardandout ofthe
erarmcoverbytheintakemanifoldvacuum.
eisconnectedtoafittingat centerofintake
ringloadedplungertypevalvewhichacts
w (Fig.143).
conditions,thetubeandrestriction
eventilatingsystemshouldbedisconnected
ntervalsdependingupontypeofservice.The
eairbyfilteringof dustanddirtparticles,
ention.Thisisan oilbathtypewhichshould
ervalsas carbureteraircleaner.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 257/401
ON,6x6
lation
beandValveService
verockerarmscoverfittingand atvalve
ommanifoldadapter.Disassemblevalve,
ablecleaningfluid,anddrywithcompressed
dadapter.Connecttubetovalve.
kerarmcoverandtightenall connections.
rvice(Fig.144)
sideof breatheradapteratcrankcase
relementfrombreather.
hsuitablecleaningfluid untilallforeign
.Cleanoilreservoirthoroughlybywashing
tilit isthoroughlycleaned.Wipereservoir
fillto"oillevel"with engineoilasdirected
."
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 258/401
r
withcompressedair.Do notilseex-
asmeshwill becomecompressedandfilter
toryforfurtheruse.Dipfilter elementin
Lubrication")andallowsurplusto drain
pterandtightenwingnutsecurely.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 259/401
emaintenance190
entparts191
nedprimarilytocarry exhaustfumes
er,whichisdesignedtodeadenengine
mmufflerthroughtailpipeto carryall
omvehicle.Exhaustpipeisattachedto
ketandsealclamp,andextendsintomuffler
ompartment.Mufflertailpipe.extends
ettunnelandexhaustsoutsideto rightof
his mountingistoprovidecoolingof
exhaustedfromenginecompartment.
G
tectanytroubleinexhaustsystemby
bowcompartmentorenginecompartment,
onsound,orbyodor ofexhaustfumes.
rriedintheexhaustfumesfromanygaso-
astelessand theonlywarningoperator
ceistheodorofexhaustfumes,however,
iven.At thefirstevidenceofexhaust
tionofallpartsofsystemshouldbe made.
auseRemedyParagraph
gReplacemuffler191
ons
ons....191
enorreplace191
noise
muffler191
ons
s....191
t
91
eTightensupportstraps..191
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 260/401
auseRemedyParagraph
ons
ENANCEANDINSPECTION
ctionandpreventivemaintenancepe-
nV,"InspectionandPreventiveMainte-
d.
rmaintenanceisaccomplishedonthe
partmentandenginecompartmenthatches
artmentsthoroughlyventilated.
bemadeofconditionof mufflerinfront
ufflerclamptightenedifnecessary.
pectionshouldbemadeofexhaust
onsatengine.Ifgasketor sealsshowany
ouldbe installed.
deofexhaustpipe andmuffler,par-
edwateroperations.Ifanyofthe pipesor
osionorrust, thesepartsshouldbeimme-
dnotberunwhilemechanicis in
newpartshavebeenreplacedinexhaust
madeofall flangeandmountingbolts
or afewminutes.Bowcompartment
checkismade.
OMPONENTPARTS(Fig.145)
soffivedistinctunits—exhausttail
flertotailpipe shieldpipe,mufflerassem-
erpipe,andexhaustmanifoldto bulkhead
fivecomponentpartsmayberemovedor
ompartmenthatches
partmenthatchesandallowtimefor
reentering.
peshieldassembly
assemblyis designedtoprotect
contactwithhotexhaustpipeandis
tlet.Removebywithdrawing4
dtohull.
ashersfromboltsholdingflange
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 261/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 262/401
Pipe T
mingBoltV
BB
C
olt FF
haustPipeII
ead
xhaustPipe
mp
p
elBolt
p
apBolt
rClamp
ming.Insidebowcompartment,re-
amp,bolt nutandlockwasher.Tail
by firstwithdrawingexhaustendof
hull, intobowcompartment.
t,removemufflertoexhaustpipe
t.Removemufflerlowersupportstrap
rapbolt,nut andlockwasher.Re-
amp,bolt, nutandwasher.Muffler
mbowcompartment.
ufflerexhaustpipe
ulkheadsealflangeclampwhichis
tandwasher.Removemufflertoex-
bolt,nutandlockwasher.Thisexhaust
nthroughbowcompartmentcover.
hield
attachedtoexhaustpipeatleft of
ampbolts,nuts andwashers,and
nginetobulkheadexhaustpipecan
headsealpipe
rts,itisnecessaryto enterengine
dsideofengine.Remove3exhaust
ts,nutsand locknuts.Whenthis
gasketandsealmaybe removed.Re-
fromexhaustpipetobulkheadseal
nnowberemovedthroughengine
headsealpipe
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 263/401
ON,6x6
oexhaustmanifoldwiththreeflange
ttachpipeto bulkheadsealassem-
ckwithnewwire.
hield
toexhaustpipeat leftofsteering
nutsand washers.
ufflerexhaustpipe
artmentbeforeentering.Attachpipe
angeclamp,clampboltnut and
withmufflertoexhaustpipeclamp,
.
pipewithbulkheadsealto muffler
er.Attachmufflertotailpipe with
bolt nutandwasher.Replacemuffler
ersupportstrap bolt,nutandlock-
pe
pipethroughopeninginhulllocated
owairoutlet grilleopening.Hold
ening2 nutsandwashersontail
tachtomufflerwithtail pipeto
dwasher.Tighten2nuts intailpipe
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 264/401
3
ION
uralcenterofthevehicle—for,inaddi-
nishessupportforthehull,powerplant
ercarriage.
spectsto frameofaconventional
tudinalchannelsiderailsconnectedby
berswhichsupporttransfercasesare
rcasereplacement.However,allother
dtosiderails.
RAME
meanditslocationinside hull,very
quiredon frameproper.However,itis
tswhichattachframeto hullstructure
nspectedandtightenedregularly.
ntingBolts.Boltsandnutswhich
klesoffrontspringandrear axletrunnion
forcingplatestoframepassthroughhull.
ompoundmustbeusedaroundbolts topre-
operation.Headsofboltsareaccessible
tsareaccessiblefromwheelhousesonout-
Bolts.Frameis boltedtoinside
nts:bowcompartmentbulkheadatex-
rontend ofcargocompartmentfloor
nofframe;and,rear endofcargocom-
rearof frame.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 265/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 266/401
auseProbableRemedyParagraph
ption
eair cleaner199
djustidlerscrew203
control203
Tightenconnections198
Tightencoverto bodyscrews.Refwence
.Tightenknurlednutattop
Tightencoverboltattop of
ket.200
98
Replacetank207
98
ystem116
adtoratedcapacity7
atetoproperpressure...288
stbrakes94
pandlubricatechoke
206
Replacecarbureter204
Adjustcontrolwireat car-
03
g
Freeupand lubricatethrottle
Replaceacceleratorreturn
screw.. 203
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 267/401
ON,6x6
auseProbableRemedyParagraph
Adjustidlingscrew203
l lineconnec-
t.200
p202
cceleration
eplacecarbureter204
ENANCEANDINSPECTION
detopre-startingpreventivemainte-
ribedinPara.14andother preventivemain-
structionsasdescribedinSectionV,"Preven-
ection."
antpreventivemaintenanceoperations
fuelconnectionsaswellasservicingoffuel
mpandaircleaneratintervalsindicatedin
intenanceandInspection."Servicingin-
sfuelunitsare itemizedinrespectivepara-
es,filter,fuelpump,andcarbureterare
artmentsinthehull.Wheneverleaksoccurat
uelhasbeenspilled intocompartment,result-
hazard.Maintenanceofallfuel connections
tremelyimportant.Carelessspillingofany
stbeavoided.
ents.Allcompartmentswhichcontain
oroughlyventilated,beforeandafteropera-
ectedatanytime,completeventilationof
mmediatelymade.Donotcarryopenflame
anytime.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 268/401
CE(RefertoFig.146)
ounteddirectlytotopofcarbureter
dust anddirtfromenteringcarbureter.
sintooil chamber.Duetoimpactandsud-
st alldirtinair isthrownintooil and
ner.Partiallycleanedairpassesthrougha
ereremainingdustis trapped.Thisdust
uteparticlesofabrasivewhich,ifper-
userapidwearof movingparts,resulting
asedoilandfuelconsumption.
ircleanerinproper conditionshouldbe
ponsibleformechanicalupkeepofengine.Air
tregularintervals.Underadverseconditions,
ondustyorsandyterrain,unit shouldbe
ntvehicleoperatesinduststorm areas,
immediatelyaftersuchstormsoccur.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 269/401
ON,6x6
offuelfilter
embly
lampsthroatofaircleanerto carbu-
ymaythenbeliftedfrom topofcar-
atcenteroftop coversothatcover
entfromcleanerbody.
ughlybyflushingina panofsuitable
onshouldberepeateduntilall dirthas
dryandcleanwithair pressure.Do
ssure,asmeshwill becomecompressed
factoryforfurtheruse.Dipelement
ow surplustodrainoff.Washreser-
dand wipeoutwithcleancloth.
e
insideofcleanerbody,usingoil as
brication."Replacefilterelementinto
cover.Makesurethat corkgasketin
ndforms aseal.Installwingnut and
aircleanerassemblyoncarbureter.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 270/401
rbureteradaptersealin cleanerbody
heckadapteredgeandmakesureit is
willfitproperlyagainstsealwhen
pter.Pressdownoncleanercoverto
dholdunitwhiletighteningclampbolt.
E(RefertoFig.147)
nright-handframesiderailbetweenfuel
accessibleinenginecompartment.Fuelfilter
arintervals.
blefilter
outletlinesby unscrewingflangenuts.
ngbolts.Aftercoverbowlattopof
ybewithdrawn.Filterelementand
doff ofbowlstem.Removedrainplug
ntshouldbethoroughlycleanedofall
blecleaningsolutionandbe sureall
mbetweendiscsofelement.Inspect
eifnecessary.
elfilter
steminfilter bowl,thenelementover
ssingspring.Assemblecovertobowl,
correctposition.Installhex headcover
ytopreventfilterleaking.Install drain
Placefilterin positiononmounting
untingbolts.Connectinletandoutlet
tennutssecurely.
ht-handsideof engine,isadiaphragm
edfromcamshaft.Inadditionto camshaft
unning,pumpis equippedwithhandoper-
sedto pumpaninitialsupplyof fuelinto
hasrunout offuelorcarbureterbowlhas
on.
periodicintervals,fuelpumpfilter
ndthoroughlycleanedofallsediment.This
nscrewingbowlclampknurlednutattopof
bewithdrawnfrompumpand thoroughly
uldbereplaced.
mpmaybe givencapacityandpres-
theror notitis functioningproperly.These
distinctfrom eachotherandmustbemade
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 271/401
ON,6x6
gine.Testshouldbe madebeforepumpis
hanotherassemblytodeterminecondition
histest,todetermineonlythatsuffi-
ng.This maybeaccomplishedbydis-
arbureterlineandattachingasuitable
outlet sothatfuelmaybe caughtina
eederhoseat carbureterlevelor
shouldbe approximatelyonepintin
tionofengineat 2000to2500rpm.
edwitha standardfuelpumppressure
ffuelpump.Pressureshould be3%
stidlingspeedofengine.
ressureto exceedmaximum(3%Ibs.)
flowincapacity,fuelpumpoperationcan
EMENT
uelfilter anddisconnectfuelpumpfuel
hichattachfuelpumptobracketandremove
itioninengine.Installmountingstuds,
n correctplaceforoilfilterreturn line.
ine tomountingstud.Connectfuel
Openshut-offvalveat fuelfilter.After
akefuelpumptestsaspreviouslydescribed.
TMENTS
ents,exceptidling,aredetermined
tsandcan onlybechangedbydisassembling
fferentjets.Chokeandhandthrottlecontrol
rmustbecarefullymaintainedinorderto
erformance.
nt
mixture,warmupengineso thatintake
o thehand(120° F.orhigher).Slowengine
wiseforrichermixtureor counterclock-
rnidlingscrewuntil enginerunssmoothly.
einno wayaffectsfunctionofcarbureter
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 272/401
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 273/401
ON,6x6
rod.Fastenendof flexiblehousingby
ecurely.Placethrottlecontrolcollaron
tscrewsecurely.Foradjustmentof
rtoPara.203.
blehousingandwirethroughcontrol
twire throughswivel.Fastenendof
ingclipsetscrewsecurely.Tighten
Foradjustmentofchokecontrol,refer
anerasdescribedinPara.199.
EMENT
scribedinPara.204.Liftgovernoroff
dgasketovercarbureterstud.Place
studinsucha mannerthatarrowindi-
pward.Installgovernortocarbureter
dinsucha positiontoallowvacuum
orforoperationofcarbureterpowerjet
s ingoodconditionandthatvacuum
ed.Installcarbureterandaircleaneras
d204.
REPLACEMENT(RefertoFig.148)
reforr eplacementofacceleratorand
velybeginningwithacceleratorpedal.How-
chokeandhandthrottlecontrolsmaybe
esired.
rolRemovalProcedure
nPara.221.
emovalProcedure
ol
nPara.221.
movalProcedure
rtment,removecotterpinandclevis
dbracket.Fromundersideofaccel-
randwasherfrompedalto idlerlever
nnowberemoved.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 274/401
hrottleandChokeControl
tton
rLeverRod
racket
et
Rod
ontrolLever
ControlLever
er(cast)Adjusting
rtoCarbureter
er(formed)
r(cast)
er(cast)StopPin
oneattachedto
edtocastlever
ring
Block
everr od
emoverodcotterpinandwasherat
rankrod cotterpinandwasherat
erleverto bracketpincotterpin
erlever.
edalandidlerleverbrackets
d,removethreenutsandwashers
ettotoeboardand removebracket.
emovepedalbracketbywithdrawing
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 275/401
ON,6x6
ell crankrod
sherfromendofrod atbellcrank
uretercontrolleverrodadjustable
tbell crank,thenremovebellcrank
erandclevispinand removebell
arburetercontrolleverrod
sherfromrodat carburetercontrol
ntrollevers(atcylinderblock)
er(lighter)returnspringfromend
removecontrolleverinner(heavier)
controllever.Removecotterfrom
o carbureterrodandremoverod
Removenutandwasherfromcon-
dremoveboth controllevers.
ntrollevertocarbureterrod
hrottlecontrolwire trunnionblock
re.Withdrawwirefromendofrod
ureterlever.
allationProcedure
ollevertocarbureterrod
everfromengine side.Inserthand
ghendofrod andinstalltrunnion
curely.RefertoPara.203forhand
olleversCatcylinderblock)
positionin formedcontrolleverwith
ward.Assemblebothleverstomount-
asher,lockwasherandnut.Hook
blockpin,heavierspringon inside,
oformedcontrolleverand lighter
er.Adjustcastcontrollever adjust-
ximately%"clearancebetweenend
Tightenlocknut.
rburetercontrolleverrod
oughupperendofcastcontrollever
dcotterpin.Rod mustnotbind.Be
willworkfreely.
dside ofbellcrankbracketwith
erpin.Donot attachcarbureter
od,to bellcrankatthistime.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 276/401
alandidlerlever brackets
ttachacceleratorpedalbracketto
bolts throughbracketandthrough
eboard.Theninsertthirdbolt with
ntoeboard.Inengine compartment
onlowerbolt.Then placeidlerlever
erbolts andsecurewithtwolock-
-handsideof idlerleverbracketand
tterpin.
crankrod
nterholeofidlerleverand inopen-
nkinsucha mannerthatrodwill
ndof rodtowhichwasheriswelded
al
ttachpedaltotoeboardbracketwith
altoidler leverrod
andidlerleverwithwasherand
suchamannerthat rodwilltravel
rburetercontrolleverrod yoke
ullthrottleposition(layingon stop
rthrottletofullthrottlepositionby
arburetercontrollevertowardrear
urnspring.Withcastcontrollever
adjustableyokesopinholesin
n endofupperarmof bellcrank.
and tightenyokelocknut.
EMENT(RefertoFig.149)
edure
ngremovaloperation,fueltank
ccomplishedbyremovingfillercap,open-
drainholes,andremovingdrainhose
bedrainedinto asuitablecontainer.
irehold-downclampboltnut,then
e rimandtire.Removesterndeck
ionsgiveninPara.66.Disconnect
minal,fuel linehoseattopof fuel
ut,andfuel tankdrainhosehv
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 277/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 278/401
onnectionPlug
tionFuelLine
uelLine
xibleHose
FilterFuelLine
onnectionsFuel
erConnection
dHole
atfueltank.Removenutsfrom 2
d removetankfrom"vehicle.
ocedure
n fueltanksupportsandsecureby
Install fueltankdrainhoseon
enhoseclampbolt.Closedraincock
ingplug.Connectfuelline hoseto
flangenut securely.Connectwire
minal.Replacesterndeckplateac-
eninPara.66.Placespare wheel
kplateandsecurewithclampbolt
MENT(RefertoFig.149)
coveredwithprotectivelooms,where
enfueltankandcarbureter.Flexiblehoseis
kandsterncompartmentbulkheadalso
pumpto eliminatepossibilityoffuelline
isprovidedatfuelfilterfor convenience
operationsonsystem.Adrainhoseextends
side openingfordrainingtank.Drain
dandcouplingplug athullinstalledat all
gtank.
linesaresecurelyfastenedin posi-
readilyremovedorinstalled.Referto
ovariousfuellines andconnections.
econtainersand
serviced.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 279/401
ARTS
andinspection211
nt212
ustment213
acement214
acement215
acement216
ntrolsandpipingreplacement... 217
veandpipingreplacement218
ION
teelplates,anglesandchannels
andboltedtogethertoforma unitstruc-
dedintosectionsorcompartmentsby
dedandboltedinplace.Metaldeckplates
oorboardsaresupportedonsupportangles
panels,supports,deckplatesandfloor
r chassisframe(asaseparateunit)is
eddowntobottomof hull.
partmentsareopenattop orcovered
eandsterncompartmentsarecoveredby
hcovers.Hatchcoversarewatertight
clampeddown.RefertoFig.43in Section
enanceandservicingofunitslocated
eredbyfloorboards,etc.,isfullydescribed
pumpwateroutofhull.Three types
ehicles:a beltdrivengeartypepump;a
ump;andahandpump.Thefirst two
sgroup,while useofhandpumpis outlined
,"SectionIII.
m
untedonchassisframesiderailon
chislocatedapproximatelyunderdriver's
om apulleyonwaterpropellerdrive
onstantlywheneverwaterpropelleris
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 280/401
ARTS
onnectedtoasystemofpipes andcontrol
rtopumpwaterfromanyone offour
ship,leftrear,rightrear).Sincepumpis
unwithoutsomewaterpassingthrough
rreservoirisprovidedinsystemand con-
hullexteriorwithasmallinlet pipe.Inlet
upplyofwaterto pumpwhenevervehicle
oughan outletinsideofhull (above
onnectedtopumpoutlet bypipeand
cockisprovidedatlowestpointin outlet
escanbedrainedimmediatelyafteroper-
System
umpis mountedonchassisframe
bracket.Pumpislocatedbelowfrontcen-
rtment.Achaindrivespumpfroma
erdriveshaft.Pumpoperateswhenever
.Asingleintakestrainer isconnected
epthofwatermustbe approximately5
straineris submergedandwaterwillbe
hargedthroughanoutletin sideofhull
utletisconnectedtopumpoutlet bypipes
G
lgepumpsandfailure ofvacuum
xtentofitems relateddirectlytothis
Table"belowcoversthesetroubleswhile
herunits arelistedintheir respective
auseProbableRemedyParagraph•
preferablyfrom
ofFastentarpaulindown
twater215
ealsCheckcoversealsand tight-
clampbolts...214
plitNotifyOrdnance
s-
orreplaceseals 228
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 281/401
ON,6x6
ause
uff-
king
n-
in
s
ll
aph
g
93
ativeor inefficient
rokenTightenorreplacebelt.212
dCleanstrainersandhull
ng
pesys-
g
noperativeorinefficient
ys-
king
perinoperative
ed
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 282/401
ARTS
antphasesofpreventivemaintenance
dparts,ispropercleaningofthebilges be-
tion.Thesebilgesshouldbe thoroughly
all dirtleaves,etc.,removed.Atregular
kestrainersshouldbeexaminedand
atelysealed;however,theseseals
ularintervalsandreplacedif necessary.
rticularcareshouldbetakento thor-
eis goingtobestoredor standingidle.
fmanifoldmustbe openandclear.This
rleftsectionofair intakegrilleisopened.
pump.
DJUSTMENT
onecessaryadjustmentswhichshould
adjustedasnecessary.
mpMountingandDriveAdjustment
aseUpper
olts
ase
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 283/401
TON,6x6
mpPackingAdjustment
elt.Drive beltshouldbetightened
wsthatbeltdoesnothavesufficienttension
oceedasfollows:
nofairintakegrille.
mountpumpbrackettoframe
dmountingbrackettowardleftsideof
belt.Tightenmountingbracketboltnuts
acketinnewposition.Checkbelttension
readjustiftensionisnot correct.
air intakegrille.
haftPacking.Packingisprovided
yend topreventleakageatthispoint.
edwheneveranexcessiveamountofleak-
Asmallamountofleakageis necessaryto
aft.RefertoFig.151.
nofairintakegrille.
enchKM-J-2342andbackawayfrom
ghtenpackingnutuntil leakageisre-
ped.Tightenlocknutagainstpacking
air intakegrille.
EPUMPADJUSTMENT
astwonecessaryadjustmentswhich
rlyandadjustedasnecessary.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 284/401
ARTS
BilgePumpDriveAdjustment
ke
Bolts
DriveChain.Wheneverdrivechain
o slaporchaintoride offpulleys,chain
oFig.152.
ectionofcargocompartmentfloor
hingpumpmountingbrackettoframe
tsareaccessibleinframechannelasshown
racketdownwardinrelationtoframe
hain.Thismovementispermittedbyelon-
tingbracket.
ramerail mountingboltswithpump
keupslackinchain.
ountingbracketisnot sufficientto
mustbeshortenedbyremovinglinks.
onof floorboard.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 285/401
ON,6x6
kingAdjustments
DriveShaftPacking.Packingaround
gis providedtopreventleakageatthis
ghtenedwheneveranexcessiveamount
shaft.RefertoFig.153.
ectionofcargocompartmentfloor
ovidedin floorboard.
wninFig.153 sufficientlytopermit
TightenpackingnutwithwrenchKM-J-
edbut notentirelystopped.Tightenlock
tchin packingnut.
onof cargocompartmentfloor
PARTSREPLACEMENT
Removal.Allhatchcoversarehinged
closedpositioninasimilarmanner.Like-
einstalledthesameunder allhatchcovers.
d-downboltsso boltscanbedis-
paswhenopeninghatchcovers.
sfromeachhatchcoverhingepin
ndhingehalvesare weldedtohatch
amps,boltretainersor hingehalvesmust
mustbebroken.
romchannelshapedretainers at-
eckplateby startingremovalofstripat
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 286/401
ARTS
tedtoolandpullingsealout byhand.Care-
stripsarejointedor lapped,
nstallation
channel-shapedretaineronhatch
er lengthstoassurewater-tightjoints.
ypinchingedges togetherwhileinserting
or hingehalvesaretobe installed,
onand weldinplace.
sitionoverhatchopeningso hinge
dinstall hingepins.Insertcotterpinsin
ver.Swinghold-downboltsintopositionon
wingnutstoclampcoversecurely.
ontBulkheadRemoval.Removalof
placementofmaintransfer.case.
ofcargocompartmentfloorboardsto
gitudinalfloorsupports.
utsattachinglongitudinalfloorsup-
eboltsandnutsattachingeachendof bulk-
wardto removebulkheadfromvehicle.
ontBulkheadInstallation
onandinstall boltsandnutsattach-
o hullsides.
entlongitudinalfloorsupportswith
fbulkhead.Installboltsandnutswhich
khead.Putfrontsectionsofcargocom-
ace.
emoval.Sterncompartmentmay
nstern deckplate.However,removalof
ffuelgaugetank unitrequiresremovalof
orethisplatecan beremoved,sparetire
Para.66 forcompleteinstructionsonre-
wellassterndeckplate.
stallation
t sideofvehicle,placesterndeck
ecksupports.Fueltankfillerneckmust
deckplateasplateis putinposition.
endoffillerneckandfit intoposition
ckplate.Attachfueltankfillercap chain
in place.
er edgeofsterndeckplateand
ngmemberstosecureplatefirmlyto deck
e carrierstrapinraisedposition,lay
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 287/401
ON,6x6
nsterndeckplateandlocateproperly
erstrapdownoversparetire andengage
downboltin eyeboltinstern plate.Tighten
ampspare wheelandtiresecurely.
Removal.Bowdecksurfcoamingis
ges onloweredge.Surfcoamingmaybe
weredpositionbybracerods ateachend
redgeofsurfcoamingandclampbrackets
f coamingbraceclampboltsanddis-
lates.Swinghingedclampplatessocoam-
t ofclampbrackets.
w deckhatchcoverhold-downbolts,
erclampsandopenhatchcover.
nttogainaccesstobolt nutsonunder
achsurfcoaminghingeto deckplate.Re-
ompletesurfcoamingassembly,including
nbe removedfromvehicle.
Installation
emblyinpositionon frontendofbow
es withholesindeckplate.
ughhingesanddeckplate.Putnuts
bowcompartmentandtightensecurely.
atchcover.Engagecoverclampswithhold-
gnuts toclamphatchcoverinclosed
cesinclampbrackets,swinghinged
engageendofeachclampplatewithclamp
securely.
tlehookismountedthroughrear
ustbeaccomplishedfrominsidesterncom-
4.
rn compartmenthatchcoverhold-
tsfromcoverclampsandopenhatchcover.
mpartment,removesixboltswhich
ertoinnerend ofhousinginsternbulk-
gasket.Removecotterpin,largenutand
tle hookshaft.
gasketoffspringoutersleeve.Slide
,andspringinner sleeveoffendofpintle
hiclemaythenpullpintlehookout-
ofshaft.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 288/401
ARTS
allation
ig.154).
okshaftthroughholein rearendof
Whilehookisheld inpositionagainsthull
ompartmentandslidespringinner sleeve,
eveoverend ofpintleshaft.
andretainerplateover endofspring
sheroverendof pintleshaftandthread
nut sufficientlytoholdcoilspringunder
attles.Theninstall cotterpin.
endcoverin positionagainstretainer
bulkheadandinstallsixattachingbolts,
ventleakagearoundgaskets.
RTAINSREPLACEMENT
partmentsarecompletelyenclosed
linsandcurtainsare inplaceandproperly
sinstalledinsectionssoone section,ora
anbeinstalledorremovedseparately.Sec-
ainsandpoints ofattachmentarelisted
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 289/401
ON,6x6
ows.Fivebowsovercargocompart-
artmenttarpaulin.Endsofeachbowfitinto
eofcompartmentsurfcoaming.Bowsare
ed outreadily.Eachbowcanbedisassem-
movingboltsandnutsholdingpartsto-
Bow.Atubularmetalbowismounted
dtosideof hullbehinddriver'sseatand
srearsupport fordriver'scompartment
ceunitbut canbeliftedoutof clampsfor
ampbolts.
Tarpaulin.Aone-pieceflattarpaulin
artment.Tarpaulinisattachedwithfas-
op ofwindshield.Rearedgeispulledover
partmentandhelddownby ropes.Untie
enerstoremovetarpaulin.
HingedSideCurtains.Curtainswith
mesarehingedat forwardendtoside
tframe.Curtainsareprovidedwith
losedagainstmetalbowbehinddriver's
novercompartmentoverlaptoenclose
ent.Removalcanbeaccomplishedbyopen-
gto disengagehingerodendsfrom
rpaulin.Aone-piecetarpaulinis
gbowsabovecargocompartment.Tar-
andbucklesspacedtoattachtobowsat
astentarpaulinto bowsalongcenterof
astenedto eyesattachedtosurfcoaming
ntwithtieropes.Endsof tarpaulinextend
d arepulledtightandtied tobulkheads
TarpaulinExtension.Thisextension
airintakebetweendriver'scompartment
Frontedgeofextensionisattachedtotar-
rtmentwithstrapsandbuckles.Hearedge
rgocompartment.Tieropesat eachrear
hittightover cargocompartmentbowand
in sidesurfcoamings.Sideflapsattached
berolledup topermitairto enterair
ouldbeloweredand fasteneddownonly
extremelyroughwater.Enginecooling
ywhenairintakeiscompletelyenclosed.
dCurtains.Eachendofcargocom-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 290/401
ARTS
ountingandWipers
endcurtainwhichisattachedtofrontand
urtainshangstraightdownandaretied
kheadswithropesinloweredge.
PERSREPLACEMENT
emoval.Thisvacuumoperated
fwindshieldframeandconnectedtovac-
e.RefertoFig.155.
uumtubenearwipermotoron rear
wwiperarmlocknutfromend ofwiper
shieldandremovewasherandwiperarm.
achsideofwipermotor.Thesescrewsat-
hieldframe.Pullwipermotorawayfrom
rsframe.
stallation
ghhole inwindshieldframeatrear
chmotorto framewithtwoscrews.As-
f motorshaftfromfrontsideof windshield
dwasher.Connectvacuumhosebetween
Removal.Rightwindshieldwiperis
eldframeat rightsideandis handoper-
hattacheshandleonrearside ofwind-
nghandle.
ftawayfromfrontsideofwindshield
ame.
nstallation
throughwindshieldframefromfront
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 291/401
ON,6x6
end ofshaftfromrearside ofwind-
y installinglocknut.
val.Glassandglassframeassembly
larsupportingframewithoutloosening
RefertoFig.155.
eldneartopusea screwdriverto
en.Atrearsideof windshieldremovetwo
toradjustingarmclampboltsateachend
vacuumhoseatleftwipermotor.
ssemblyoutwardat bottomtoclear
enslideglassand frametoleftfromfront
entwilldisengageportionofhingecon-
portionof hingeconnectedtotubularsup-
andframetosuitablebenchor table.
utsandboltsattachingtop sectionof
meandpullofftop sectionorchannel.Re-
eft sectionsofframeandcleanallframe
tion
annelswith soapsolutionorrub
assinstallation.
eroveredgeofnewglass andslide
filler andglass.Fitfillerstrip atcorners
fglass insamemanner.
eovertopedgeofglass sectionsand
nnuts.Replaceglassand frameassembly
vehicleby slidinghingesectionstogether
e) ofsupportframe.Bendendofhinge
on.
regulatoradjustingarms overad-
endof windshield.Theninstallthumb
pwindshieldinclosedposition.
SupportFrameRemoval.Complete
pportframecanberemovedasan assem-
sfromregulatoradjustingarmclamp
shieldandremoveclampboltsandwashers.
dtubularsupportframeto betippedfor-
on stanchionsindeckplate.
rewsin bottomtubeofsupportframe
setin Fig.187.
edholeineachpivotpin ateachend
rameto assistinpullingpin.Then re-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 292/401
ARTS
pletewindshieldglassandtubularsupport
beliftedofffromvehicle.
SupportFrameInstallation
yinpositiononvehicleand lineup
oles insupportbrackets.
ethrougheachbracketandinto
toinsetin Fig.155.Setscrewholesin pins
wholesinframetube.
ttomtubetoholdpivotpins inplace.
dshieldtoverticalpositionso thatslotin
rmisalignedwithhole ineachsupport
mpbolts throughregulatoradjust-
,usingwashersin correctposition.Puton
toclamptubularsupportframeand wind-
on.
RIVE,CONTROLSANDPIPING
ve Removal.Pumpdriveconsistsof
atfrontsideof waterpropellertransfer
n pumpshaft.Pumpismountedonchassis
stablebracketlocatedbelowdriver'sseat.
rsectionsofair intakegrilleforaccess
hoseclampsatpumpinlet andoutlet
esetwopoints.
untingbracketbolts,nutsandwashers.
takedrivebeltoffpulleys,lift pumpoff
vethroughairintakegrilleopening.
enpulley onpumpshaftandremove
nutwhichlockdrive pulleyonwater
ftand,utilizingtappedholesin pulley,
emovepulleyandWoodruffkey.
ve Installation
ndWoodruffkeyonend ofshaft
ellertransfercase.Tappulleylightly
b todriveonshaft.Install largenut,
tcotterpin.
yandkeyonend ofpumpshaftand
.
gbracketin positiononframebracket
olts,washersandnuts loosely.Connect
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 293/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 294/401
ARTS
utletandtightenhoseclampboltssecurely.
ver bothpulleys.Slidepumpand
eftsideofvehicletotakeup slackinbelt.
owni nFig.150.Withbelt tensioncor-
gbracketboltstoclamppumpin adjusted
ectionsofairintakegrille.
ValvesandControlsRemoval.Gear
ed invehicleasshowninFig. 156.Fig.
orgearbilge pumpsystem.Beforere-
tionthereofis attemptedpositionofunits
showsrelativepositionsof units,hose
gclips.Ifcompletesystemistoberemoved,
attainedbyopeningenginecompartment
allfloorboardsandair intakegrilles.
oorBoards
tValveControl
veControlRod
alveControlRod
ontrolRods
ValveControlRod
ontrolValve
dship
hip
Rear
tRear
ControlValve
htRear
nt
es
ntControlValve
trolValve
htRear
nt
foldMounting
Drum
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 295/401
ON,6x6
itsofsystem,referto Para.66for
mentintakepipesandstrainer
ections:oneinenginecompartment,
underdriver'sseat. Loosentwo
ustration,Fig.156. Removetwo
strainer.
partmentintakepipesandstrainer
ections:oneatfrontofleftrear
rcontrolvalveunderdriver'sseat.
tedasshowninFig.156.Removetwo
strainer.
artmentintakepipesandstrainer
nnections:twonearleftrearwheel-
olvalveunderdriver'sseat. Remove
edasshownin Fig.156.Remove
peandstrainer.
partmentintakepipesandstrainer
ections— onenearcenterofcargo
ontrolvalveunderdriver'sseat.Re-
gpipestoframeside railandfloor
ctionsofintakepipeandstrainer.
gepipe
ections:oneathulloutlet,andone
mp.Removecurvedsectionofpipe.
ervoirandpipes
movingbolts,attachingseatbottom
seconnectionbetweenreservoirout-
driver's seatbox.Disconnecthose
omofreservoirandcontrolvalvemani-
ethoseatbottomof reservoir.Then
at boxtoremove.
vesandrods(Referto Fig.157)
owerendsoffourcontrolrods and
rcontrolvalvebracketmounting
alves,manifoldandmounting
canberemovedas anassembly.
hoseandstrainer
washersattachinginnerhalfof
toouterhalfwhichis weldedto
atedinsideofhull,belowandat left
nerhalfofstrainer withhoseas-
betweenhalvesofstrainer.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 296/401
ARTS
ValvesandControlsInstallation
sand rods(RefertoFig.157)
dmountingbracketassemblyinposi-
rail andinstallfourmounting
stallendsof fourcontrolrods
owninillustration andinsertcotter
voirand pipes
lacethroughholein seatboxbot-
petogear bilgepumpintakewith
onnectinghosebetweenbottomof
esmanifold.Placedriver'sseaton
attachingseatbottomtoseatbox.
se andstrainer
includingscreen)in position
erwhichis weldedtosideofhull
sseat.Putnewgasketinplacebe-
stallsixbolts, nutsandwashers
necthosebetweeninnerhalfof
of reservoirwithhoseclamps.
pipe
peinpositionbetweenpumpoutlet
ectinghosesateachend ofpipe.
pointofpipeis shutoff.
artmentintakepipesandstrainer
egripesandstrainerin properloca-
e connectinghoses,onenear
entandonenearcontrolvalveunder
reeclipsattachingpipes.
rtmentintakepipesandstrainer
kepipesandstrainersin proper
g.156.Installthree pipeconnecting
heelhouse,andonenear control
Assemblefourclampsandclipslo-
56.
tmentintakepipesandstrainer
epipeandstraineri nproperloca-
6.I nstalltwopipeconnectinghoses:
eelhouse;andonenearcontrol
Assemblethreeclampslocatedas
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 297/401
ON,6x6
entintakepipesandstrainer
epipesandstrainerin properloca-
. Installtwopipeconnectinghoses:
nt,andonenearcontrolvalveunder
oclampslocatedasshowninFig.
airintakegrille
s compartmentandcargocompart-
ereremovedforaccessibilitytopipe
ectionsofair intakegrillewhich
necompartmenthatchcover,swing
onincoverclampsandtightenwing
ely.
EPUMP,DRIVEANDPIPING
andDriveRemoval.Pumpdrivecon-
vesproketinwaterpropellerdrive line,
pumpshaft.Pumpismountedon chassis
stablebracketbelowfrontcentersection
efertoFig.152.
ontcentersectionsof cargocom-
umpoutletand disconnecthose.
untingbolts,nutsandwashers.Move
vedrivechainfromgears,andlift pump
move.
engear onpumpshaftandremove
kestrainerisattacheddirectlyto pump
pump.Removeintakestrainerfrom
ewandpulling offstrainerassembly.
kindrive chaininordertoremove
rocketanddriveshaft.Drivesprocket
esatrearof frontwaterpropellerdrive
iatewaterpropellerdriveshaft.Removal
Para.237.
andDriveInstallation.
waterpropellerdrivelineasde-
ve chaininplaceonteethof drivesprocket
nchain.
ndkeyon endofpumpshaftand
.Installintakestraineronpump intake
gbracketin positiononframeside
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 298/401
ARTS
gbolts, nutsandwashersloosely.Connect
hten hoseclampbolts.
pwardsufficientlytoput drivechain
rivengear.Thenslidepumpandmounting
eupslackindrivechain.Do notadjustchain
mpmountingbracketboltstoclamppump
ntcentersectionsofcargocompart-
PipeRemoval.Sincetheonlypump
directlytopumpintake,pipe systemcon-
.Referto Fig.156.
onofcargocompartmentfloorboards.
ddisconnecthosesatbilgepump out-
rdischargepipe.
nowloose andcanberemoved.Upper
oside ofhullandoutletfitting inhulland
PipeInstallation
pein positionbetweencentrifugal
chargepipe.
andclampsateachend ofpipeand
ely.
nofcargocompartmentfloorboards.
n pumpoutlets
mps,thendisen-
allowingpriming
mps.Engageclutch
umpasdesired.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 299/401
GES
yreplacement220
acement221
s,asillustratedin Fig.158,areinstalled
panel,mountedonleftsideofwindshield
eringcolumn.Theinstrumentpanel,with
s,canberemovedor installedascomplete
entorgaugecanberemovedandinstalled
ASSEMBLYREPLACEMENT
val
ptinganymaintenanceorrepairon
sconnectatleastoneterminalatbattery.
tremovetemperaturegaugethermal
dremovethrottleand chokewiresfrom
partment,backofinstrumentpanel,re-
anel
tch
ton
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 300/401
GES
ionsfromterminalonbackofinstruments
romtopofspeedometerbracketand
p.Removenutandwiringharnessclipfrom
gaugebracket.Disconnectoilgaugeflex-
ressuregaugebybackingoffflangenut.
asherfrominstrumentpanel tosteer-
e3bolts,nutsandlockwashersattaching
hieldlowerpanelassembly.
nelassemblybywithdrawingtem-
nit,handchokecontrolwireandflexible
rolwireandflexiblehousingthroughopen-
ation
tplacepanelinposition inwindshield
dfastenwith3bolts,nuts andlockwashers.
osteeringcolumnbracewithbolt,washer
panelattachwiringharness clipto
acketwiththumbnut.Fastenwiringhar-
erbracketwithclip,washerandnut.
oinstrumentandgaugeterminals
asshowninFig.99 (SectionXVIII).Be
dby tracercolorareattachedtoterminals
blelineto backofoilpressuregauge
peedometerdrivingcabletobackofspeed-
ut.
ireandflexiblecable,throttlecontrol
temperaturecontrolterminalplug
nuppertoe board.
tplacetemperaturegaugeterminal
eandfasten withattachingnut.
ttlecontrolwireandflexiblehous-
ter.Threadendof wirethroughendof
dofcontrolflexiblehousingsecurelyin
ningclipclampbolt.
ollaronend ofthrottlecontrolwire
Foradjustmentofthrottle controlsee
ntrolwireand flexiblehousing
continuingendofwirethroughchoke
fflexiblehousingin clipwithsetscrew.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 301/401
TON,6x6
kecontrolleveratcarbureterwithset
djustmentseePara.203.
AUGEREPLACEMENT
tinganyreplacementofinstruments
eterminalwireatbattery,otherwiseserious
moval
rombackofspeedometerheadby
move2wingnutsfromspeedometerhead
essclipfromupperspeedometerheadbolt.
mpoffspeedometerheadbolts.Remove
hingfrombacktofrontinstrumentpanel.
allation
adinpositionininstrumentpanel by
strumentpanel.Onbackofinstrument
headbracketintwoboltsinspeedometer
erandwingnut onlowerbolt.
pon upperspeedometerheadbolt
dwingnut.Attachdrivingcableto center
terheadwithswivelnut.
ableRemoval
t,atbackofinstrumentpanel,re-
gcablefromspeedometerheadbyunscrew-
nectiononspeedometerhead.Remove
andwasher.Removecabletodashgrom-
tfromspeedometerdrivingcable.
tremovecabletotransmissionclip,
ovecabletomastercylinderclip,bolt,nut
etosecondcrossmember,clip,bolt,nut
velnutattachingcableassemblytospeed-
ansfercase.Withdrawspeedometerdriving
oardintoengine compartment.
ableInstallation
t,threadendofspeedometerdriving
elnut,throughuppertoeboardto instru-
riving cableintoendofdrivegear inleft
hten swivelnutsecurely.
ssionclip,boltnut andlockwasher.
ossmember,clip,bolt,nutandlockwasher.
nder,clip,bolt,nutandlockwasher.
tplacecabletodashgrommeton
onin uppertoeboard.Attachcableto
wivelnut.Attachcabletodash,clip,bolt,
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 302/401
GES
gharnessclipfrom left-handam-
enutandwireterminalfromright-hand
ovenutandwasherfromrightammeter
meterclamp.
gefrominstrumentpanelbypushing
npositionin instrumentpanelby
anel.Onbackofinstrumentpanelplace
n ammetergaugeandfastenwithnutand
harnesswiringclip inrightboltand
r.Placewireterminalon rightboltand
r.
fuelgaugeclampbolts.Removewire.
movenutandwasherfromeachof 2fuel
movefuelgaugeclamp.Removefuelgauge
pressingthroughfromback.
tion ininstrumentpanelbypressing
efuel gaugeclampon2boltsi nbackof
nutand washeroneachbolt.Placeter-
d fastenwithnuttoeachbolt.
hing2wireterminalsat backofigni-
ationpliers,removeknurlnutfromignition
rumentpanel.Removeignitionswitch
panelfromfront.
on
positionin instrumentpanelby
ontof instrumentpanel,placeknurlnut
enwithcombinationpliers.Attachtwo
backofswitch.
val
esattachedtobackof mainlight
ontof instrumentpanelloosensetscrew
tandremoveknob.
onunder sideofswitchhousing.
ngplungeruntilhousingwillslip off
ovehousing.Removelocknutandwasher
vemainlightswitchassemblybypressing
mentpanel.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 303/401
ON,6x6
lation
hthroughinstrumentpanelfrom
thlocknut andwasher.
strumentpanel,placeswitchhous-
pressswitchlockingplungeruntilhousing
shousingfirmly againstfaceofinstrument
ninghexlockingnut inundersideof
mentpanelattach7wires toterminalson
ws.Terminalsonswitcharelettered.
ercolor.Referto SectionXVIII.
tchRemoval
esfrombackofB. 0.drivingswitch
nsetscrewholdingknobto switchpost
asherfromswitchpost.Remove
nelbypushingthroughfromfront.
tchInstallation
onin instrumentpanelboardfrom
panelwithwasherand locknut.Place
stenwith setscrew.Attach2wiresto2
.
moval
tto disconnectcapillarytubeorseal
gauge.Removetemperaturegaugether-
gby unscrewingnutatenginefitting.
koftemperaturegaugeclampplateand
ovetemperaturegaugebywithdrawing
hroughuppertoeboard andinstrument
tallation
roughinstrumentpanelandplace
mentpanel.Placetemperaturegauge
eraturegaugeandfasten with2nuts.
toenginecompartmentthrough
.In enginecompartmentinsertthermal
tightenholdingnut.
emoval.Allthreeinstrumentpanel
ypeandcanberemovedbythefollowing
eld,locatedoverlightin instrument
screwdriverunderrim ofshieldandgiv-
Removeinstrumentlightunitbyinsert-
tweenrimofunit andlightshieldbracket,
el,andgivescrewdriverlighttwist.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 304/401
GES
nstallation
light shieldbyinsertinglightshield
backofpaneland "snapping"shieldinto
all instrumentpanellightunitby"snap-
hieldextensiononbackofinstrument
moval
tloosenscrewincollaron endof
ndremovecollar.Loosencontrolwireclip
enclipscrewholdingthrottlewireflexible
wireclipat carbureter.Removenutand
ottlecontrolassemblyatinstrumentpanel.
blyoutthroughinstrumentpanel.
stallation
flexiblehousingthroughopeningin
washerandlocknutovercontrolwire and
ovedthroughpanel.
assemblytobackofinstrumentpanel
Threadwireandflexiblehousingthrough
ecompartment.Inenginecompartment
usingthroughclipat carbureter,continu-
dof carbureterrod.Attachendofflexible
erwithbolt, nutandwasher.
endofflexiblewireandfastenwith
ofstopcollaron handthrottlecontrol
moval
eterchokeleverswivel.Loosencon-
bureterendofflexibletubing.Onbackof
nutandlockwasherfromhandchokecon-
ontrolassemblybywithdrawing
allation
flexiblehousingthroughopeningin
ockwasherandnutovercontrolwireand
ovedthroughpanel.Fastenhandchoke
mentpanelwithlockwasherandnut.
flexiblehousingthroughhole in
ecompartment.Inenginecompartment
usingthroughclipat carbureter,continu-
okeleverswivel.
ousingto clipatcarbureterwithset
nchokeleverswivel.Foradjustmentof
Para.203.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 305/401
INGAXLE
emaintenance224
semblyreplacement225
eplacement226
acement227
alreplacement228
es.(Fig.159).Atotalof sixpropeller
ntransmittingpowerbetweenmaintrans-
ngaxles.Eachshaft assemblyconsistsof
aftwithaslip jointtopermitlengthwise
ersaljointsateachendto permitmove-
eshaft.
ssemblies.Thepropellershaft
aintransfercasetofrontaxle,toforward
kare eachencasedinaseparatetubular
.159).Eachhousingis attachedatone
hingeandsyntheticrubberbellowsand,
rentialcarrierorpillowblockbya support
ws.Thesehousings,withbellowstypeseals
o preventleakageofwaterintohull.No
ershaftbetweenpillowblockandrearward
G
sorvibrationsaregenerallythe first
ditionsindrivingaxlepropellershaft
forereplacingapropellershaft,becertain
eingcausedbypropellershaftandnotby
rboards,etc.Failureofpropellershaft
videncedbywaterleakageduringwater
auseProbableRemedyParagraph
ation
ews227
Disconnectshaftatslip
intandr eassemblewith
sameplane226
ts...SectionVI
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 306/401
INGAXLES
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 307/401
ON,6x6
auseProbableRemedyParagraph
sor
haftassembly..226
Replaceshaftassembly..226
t
rings227
orn
ngs227
Tightenclamps228
lk-Tightenthe12nuts on
e.eachofthe threeretainer
cedefectiveseal...228
placedefectivehousing225
ENANCEANDINSPECTION
ectionV,"PreventiveMaintenance
accomplishedatintervalsindicated.One
sin preventivemaintenanceofpropeller
tionofpropellershaftsealsat thehousing.
ft,flangebolts anduniversaljoints
arintervalsandattachingboltstightened.
OUSINGASSEMBLY
ofthepropellershafthousingassem-
eandfrontaxleor betweentransfercase
resdisconnectinghousinghinge,removal
peseals ateachendofthe housing,slid-
hullas faraspossible,looseningbaffle
ectinghousingsupportfromdifferential
pellershaftatuniversaljointataxlepin-
dof shaftandhousingdownwardsaway
awinghousingassembly.Toremove
caseandpillowblockitis necessaryto
euntilrearaxleassemblyhangsfree.With
ngmaybe replacedbyfollowingapro-
ribedforthe othertwoaxlepropeller
ousingToFrontAxleOrToForward
housing
ewsandwashersfromhingeat hous-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 308/401
INGAXLES
tbottomof housingandoneis
sing.
mprings
patendofrubberbellowson propel-
vetheclamp.
wayfromaxleandthroughholein
araspossible.Donot pinchordamage
operation.Pullsealat axleendoff
oint
ockwashersfromthetwo"U"bolts
oint ataxlepinion.Push"U"bolts
ectingpropellershaft.Donotdrop
softhejoint when"U"boltsare
apearoundthe trunniontohold
boltsare removed.
rshaft
ryokeat axleendofpropellershaft
ellershaft,awayfromaxle end.
pport
wsandwashersattachinghousing
capto axledifferentialcarrier.
ainingcapscrewswhichhold only
mbly
niscompleteddrophousingandpro-
d sohousingmaybepulledforward
gassemblyfromvehicle.
HousingToFrontAxleOrToForward
ft
ershaftfromaxleend. Besureend
latesaretowardshull andreinforc-
de housingthroughrubberbellows
einhull asfaraspossible.
ts
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 309/401
ON,6x6
ort
tand housingassemblyintoposi-
verend ofpropellershaft.Then
fferentialcarrierwith thefour
washersandtightenscrews.Besure
dendofsupportbeforescrewsare
otenoughfree movementatshaft
gshaftintoalignmentwithaxle
lled.
holdingtheneedlebearingassemblies
onsand holdbearingsinplace
topositionso thatbearingcages
pinionshaft.Then installthetwo
shersandtightennutsonthe "U"
lershaft
aftclosetoend ofshaftandtighten
mlyinposition.
ng
housing supportatdifferential
ftas necessaryuntilholesintap-
ndbottomwilllineup withcorre-
senewlockwashers,installthethree
g
axleendof housinguntilstraight
ingcrimpedinhousing.Workbellows
positionandinstallclampring.To
gstrap aroundstraightportion
ge ofstrapisbeyondcrimpin hous-
hroughslotinnut andpullstrap
henbenddownflat.Tightenclamp
ousingToPillowBlock)
icle
talljacksunderspringtrunnion
evehicleonjacksuntilaxleassem-
acksareinstalled sothatthey
eto fall.Vehiclemustbejacked
groundtopermitremovalofthe
upportonfront endofpillowblock.
mbly
giveninPara.225b.,operations(1),
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 310/401
INGAXLES
tthatendofhousingis raisedand
ofaxlehousing.
y
ra.225a.,operations(1),(3),(5)
vehicleonjacksandremovethejacks
heels.
SSEMBLYREPLACEMENT
tassembliesbetweenwaterpropeller
etransmissionor maintransfercasemay
oorboardsanddisconnectingflangesat
ofshaftsfrommaintransfercasetofront
pillowblockrequireremovalof floor
versaljointsanddisconnectingpropeller
eenpillowblockandrearwardrearaxle
nnectinguniversaljointsateachendof
aftsbetweenwaterpropellertrans-
nsmissionorthemaintransfercase.
ytofrontofwater propellertransfer
eftsectionofdriver'scompartment
ttachcentersectionandfiveattach
rearofwaterpropellertransfer
rcentersectionofair intakegrille
oved.
ointflanges
flangesfromcompanionflanges.
rsandboltsfromuniversaljoint
ellershaft assembly.
tassembly
opellershaftassemblyfromcom-
shafttogetheratslip joint.Then
ehicle.
Shaftbetweenwaterpropellertrans-
nsmissionorthemaintransfercase.
g
splinedslip joint.(SeeFig.161and
f theshaftareassembledatthe slip
kesat eachendmustbein thesame
ndfemaleportion oftheslipjoint
ksarenot inline,loosenthedust
nt,pull shaftapartatjointand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 311/401
ON,6x6
ne.Becertainsplinesare lubricated
otdamaged.Afterjointi sreassem-
ghtenthedustcapfinger-tight.
sitionbetweencompanionflanges
propellertransfercase(ormain
opellertransfer).Theslipjoint
wardsfrontof vehicle.Insertfour
nionflangeanduniversaljointflange,
ndtightenalternatenutsuntilall
grille
onof driver'scompartmentfloor
air intakegrille,whicheverwas
dfloorboardwithfivescrewsand
rscrews.Thecentersectionofair
edinplace.
aftsbetweenmaintransfercaseand
e,orpillowblock.
rtmentfloorboard
nofcargocompartmentfloorboards
saljointsat themaintransfercase.
maintransfercase
sfrom"U"boltsattachingcompanion
fttouniversaljoint trunnionon
efront orforwardrearaxle.Wrap
dneedlebearing assembliesin
e removed.Disconnectshaftbe-
lowblockbyremovingfourbolts
geandshaftuniversaljoint flange
tassembly
thousinganduniversaljointfrom
uctedin Para.225.Donotwith-
yfromvehicle.Withdrawpropeller
ng,pullingitoutfrom axleendof
Shaftsbetweenmaintransfercase
raxle,or pillowblock.
g
assembledsoyokesateachend
meplane.SeeinstructionsinPara.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 312/401
INGAXLES
dviewofpropellershaftanduniversal
weenmaintransfercaseandfront axle,
wardrearaxle,or pillowblockandrear-
ring
sembly
ghpropellershafthousingwith
mblytowardstransfercase.Then
xleorpillowblockand replace
nstructedinPara.225.
ercase
nsfercaseendof propellershaft
haft.Followinstructionsin Para.
ntorforwardrear axlepropeller
nt.universaljointofpropellershaft
maintransfercasetoflangeon trans-
s,nuts andlockwashers,tightening
tmentfloorboard
oorboardinplaceincargocompart-
opellershaftassemblybetweenpillow
xle.
oints
ockwashersfromthetwo"U"bolts
runnionstoflangesat pillowblock
Driveout the"U"bolts,being
edlebearingassembliesfromtrun-
y
hafttogetheratslip joint,thus
sfromflanges.Removeshaftassem-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 313/401
ON,6x6
apearoundtrunnionsto hold
ingsinplace.
Propellershaftassemblybetween
rearaxle.
g
assembledsoyokesateachend
ane.Followinstructionsgivenin
sembly
sitionbetweenflangesonrearof pil-
rearaxle drivepinion.Slipjointend
lowblock.Removetapeor wrap-
niversaljointtrunnion atoneend
nplacewith fingers.Insertthetwo
iontocompanionflange,install
enutson"U"bolts.Tightenalter-
procedureat oppositeendofshaft
EMBLYREPLACEMENT
owblockassemblyrequiresdiscon-
usingandpropellershaftfromfront end
tingpropellershaftfromrearofpillow
apscrewswhichattachpillowblockto
earaxle housing.
llowBlockAssembly)
haftandhousingfromfrontend of
Para.225d.
haftfromrearofpillow block
.226f.,disconnectingshaftat
ndlockwasherswhichattachpillow
gandremovethepillow blockas-
eeFig.163).
se
omoutsideofpillowblockassembly
e.
tflanges
fromeachendof pillowblockshaft
gesoff ofshaftwithflangepuller
teachendofshaftand,at rearend,
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 314/401
INGAXLES
ssembly
ousing
utLocks
fromkeywayandthefelt washer
thousingsupport
sandlockwasherswhichattach
dof pillowblock.Thenremovethe
l asanassembly.
oilseal assembly
dwashersatrearof pillowblock.
ndthecoverandoil sealassembly.
alis locatedinthepropellershaft
pillow blockandoneislocatedin
k.Bothare stakedinplacewith
Toreplaceeitherseal proceedas
ngsupportorrearcoverusingoil
45.
arksusedto retainseals,usinga
s smoothandcleanbeforein-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 315/401
ON,6x6
compoundtooutsidesurfaceof
ousingsupportor cover.Apply
erycarefulthatnocompound
itself.
supportorinrear coverusingre-
eninstallingsealinpropeller
alldiameterofsealmust be
ort.Wheninstallingseal inpillow
meterofsealmustbe towards
r.Aftersealis drivenintoplace
equallyspacedpointswithprick
earingReplacement
tingnut
ngsupportandpillowblockrear
replacement(seec.above),bearings
edforinspection.Bendtangsof
earinglocknutandadjustingnut
removelocknut,bothlockwashers,
gnutwasher.
aft
hsoft-facedhammer,drivingshaft
block.Frontbearingconeisaloose
nincup.Rearbearingconeis a
emainonshaft.Bothbearingcups
mcupin pillowblock.Removerear
puller.Cleanandinspectbearing
notremoveunlessdamagedorworn
drivecupsoutofendsofblockwith
344B.Tapalternatelyonopposite
meoutwithoutbecomingcockedin
sasfollows:
gfluidsuch ascleangasoline,
strikelargerside ofbearingflat
ockoutheavierparticlesof dirt.
ddrywithcompressedair,directing
efulnotto spinbearings.
byhand,andinspectrollers and
ssivewear.
aringsinengineoil andwrapin
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 316/401
INGAXLES
ved,driveonecupinto eachendof
rKM-J-2344Auntilseatedsolidly
nstallrearbearingconeon pillow
riverKM-J-2343.Drivebearing
shaft.
bearings
ace onshaft,installshaftfrom
ateandinstallfrontbearing cone
ng intoplaceinfrontbearingcup.
randadjustingnut onshaft.If
ovedfromshaft,orif eitherofthe
pillowblock,tightenadjustingnut
aringsareseatedproperly.Then
permitshafttospinin bearings.
bleendplay,however,whenbear-
ntinstalltwonewadjustingnut
adjustingnutlocknut.Tightenlock-
angebearingadjustment.Check
endplaybutstill turnsfreelyafter
endtangsoflocksover flatsonnuts.
ousingsupport
endofpillowblockandinstall the
pportandoilseal assemblyonfront
wstypehousingsealmustbe in
pportisattachedto pillowblock.)
usingnewlockwashersandtight-
cover
fpillow block,installthecoverand
pacer.Attachto pillowblockwith
ockwashersandtighteningscrews
erisinstalledbetweencoverflange
.163.)
nges
ar endofshaft.Placekeysinkey-
Applysealing compoundtokeyways
haft;pressnewcorkseals intokey-
mpound.Installpropellershaft
sliding hubofflangethroughoil
tainouterportionofseal isnot
whileinstallingtheflange.Install
shaft,tightensolidandlockin place
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 317/401
ON,6x6
PillowBlockAssembly)
deof bracketontopofforward
fthousingsupport towardsfront
rcapscrewsusingnewlockwashers.
tatrearof pillowblock
frontendof rearwardrearaxle
rear ofblock.(SeePara.226g.)
tandpropellershafthousingat front
keonrearofpropellershaft between
ocktoflangeat frontendofpillow
pellershafthousing.Para.225e.
OUSINGSEALREPLACEMENT
ofrubberbellowstypesealsataxle
eller shafthousingsrequiresdisconnect-
jointsat axleorpillowblockendsand
housingsupport.Replacementofseals
srequiresremovinghousingsfromvehicle
rringswhichattachsealsto bulkheads.
alsatFrontorForwardRearAxle
dpropellershaft
wardrearaxlefollowinstructions
1)through(6).Do notremove
hicle.
pringattachingsealtodifferential
dpullsealawayfromcarrier.
SealatFrontorForwardRearAxle
toflangeofaxledrivepinionbearing
paroundstraightportion ofbellows
reeend ofstrapthroughslotin
hapair ofpliers,thenbendfree
pscrewanddrawup tight.
tandhousing
dconnectpropellershaftandpro-
as instructedinPara.225c.
alatPillowBlock
dpropellershaft
thousingandpropellershaftfrom
ccordancewithinstructionsinPara.
ousingfromvehicle.
ort
okefromfrontofpillowblockshaft
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 318/401
INGAXLES
thousingsupportandsealassembly
si nstructedinPara.227c.
singsupport
trearofhousingsupport.Then
flangeonrearofhousingsupport
SealatPillowBlock
support
dof propellershafthousingsupport
ardslargeendofsupport.Work
geonendofsupport.Theninstall
c.,operation(1).
on pillowblock
ndsealassemblyonfrontendof
pellershaftyokeon frontendof
ctedinPara.221 A.,operation(7).
ropellershaft
iversaljointatfrontof pillowblock
thousingasinstructedin Para.225e.
alsatBulkhead
thousing
propellershafthousingtohullbulk-
opellershafthousingassemblyas
notnecessarytodisconnectpro-
rcaseend.
ngandseal
nofcargocompartmentfloorboards
tsandlockwashersfromstudson
Whilestill insidehullpushonstuds
seal. Thenremoveretainerring
l bulkhead.
SealsatBulkhead
onseal
roughthe retainerringwithring
al.Moveringintoposition onseal
esin seal.
head
tside ofhullbulkheadwithretainer
.Installnutsandnewlockwasherson
etightenall nutsfingertight,then
des alternatelyuntilallaretight-
mbly
mblyasinstructedinPara. 225.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 319/401
RIVE
andinspection232
e233
nt235
ent236
ent237
eplacement238
ent239
t240
ION
eincludeswaterpropellertransfer
ustbearingatrearaxle trunnioncross-
utbearing,andwaterpropeller.Location
wninFig.164.
rCase.Waterpropellertransfer
pellershaftpowertake-off,consistsofa
ftsfortransferof powertomaintransfer
p,andwaterpropeller.
y.Thrustbearingassemblyconsists
ng,tworetainers,twospringloadedoil
adedbearingcap.The tworetainers
aringcapandabolt.Outersurfaceof re-
ofhousingare sphericalinshapeto
gthrust bearingwithwaterpropeller
tin housingisprovidedtoclampre-
ringsare inalignment.
oxassemblyaroundrearwaterpro-
using,two bushings,apackingnut,a
hitecordpacking.
engagedor disengagedbyraising
nobatright ofdriver'sseat.Controlrod
ftin coverofwaterpropellertransfer
ndlinkagemountedatrear oftrans-
opelleristakenfrom upperrearflange
opellershaftstopropeller.Driving thrust
heldtoshaftwithtwotaperedpins,
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 320/401
RIVE
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 321/401
ON,6x6
bly.Transfercaseisconnecteddirectly
smissionratiosare availablealthough
speedhigher thanthirdbeused.
G
counteredinwaterpropelleranddrive
tonoisy operationsoftransfercaseand
evibrationinpropellershaftsorhard
oiseinpropeller shafts
auseProbableRemedyParagraph
39
acebearing240
ed
earing238
placeshafts237
eshafts237
oseTightenbolts andnuts..238
ollowrecommendedpro-
spect,cleanandlubri-
placerods236
nsfercase
als NotifyOrdnance
acegaskets234
ENANCEANDINSPECTION
ntinspectionandmaintenancepro-
djustmentandinspectionofwaterpropel-
adetoParas.233and 239fordetailson
TENANCE
bricatedat intervalsasdirectedin
ampsateachend ofhosebetweenstuf-
ttunnel aretight.Packingnut-should
eventseriouswaterleaksbutnotso
ox tobecomeoverheated.
Fig.165).
tersectionof cargocompartment
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 322/401
RIVE
erStuffingBox
over sideboardsinorderto gain
osenlocknut,tightenpackingnut
ut.If leakdoesnotstop,waita
/6 turnmore.Whenlimitofadjust-
nutbottomsonstuffingboxhousing)
isfreeofstuffingbox andreplace
ENT
thelowershaftsof thewaterpro-
ereplacedafterpropellershaftflanges
emoved.Oilsealsat uppershaftareac-
okeateachend ofshaftareremoved.
replacementcannotbeaccomplished
ershaftisremovedandthrust bearing
shaft.
enancepersonnel.
PLACEMENT
casemaybelifted outofvehicle
eningafterpropeller shafts,shiftcon-
eltareremoved.
nfloorboardandairintakegrille
driver'sfloorboardandair intake
esstotransmissiontotransfercase
tsfromwaterpropellertransfercase
ransfercase
joint.Removefourboltsandnuts
fpropeller shaft.Separateflangesbypush-
ointandliftpropellershaft outofvehicle.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 323/401
ON,6x6
rpropellershaft
nPara.237b.
pumpdrivepulley
ngbracketboltsandslidepumpand
centerofvehicletoslackenbelt.
ercontrolrodfromshiftershaft
removingcotterandclevispin.
swhichattachtransfercaseto
at uppersupportthenlifttransfer
grille opening.
onProcedure
enflangesoflowersupportandin-
hichattachcasetosupport.Then
casetouppersupport.Connect
toshiftershaft usingacotterand
stogetheratslip jointandplacein
nfourbolts andnutsinflangesat
ten dustcapatslipjoint. Install
directedinPara.237c.
umpdrivepulley
p drivebeltasdirectedin Para.
REPLACEMENT
casecontrollinkageisaccessible
er'scompartmentdoorboardisremoved.
tableandany bentordistortedparts
edure
ontrolrod
hiftershaftandcrossshaft shift
ndclevispins,thenremoverod.
dshiftlever
everand movelevertowardscenter
posekeyin shaft.Removekeyand
and outersidesofleft-hand
.
tstabilizerrod
abilizerrodatleft-handcrossshaft
erandclevispin.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 324/401
RIVE
ckets
everatpowertake-offshiftershaft
evispin.Removecotterpinat end
nsmissionstudand removelever
chattachesleft-handbracketto
cketoffstud.Removetwonuts
kettotransmission,loosenhand
s,andremovewaterpropellercross
cedure
ets
overforwardstudunderhandbrake
tallstudnuts. Installleft-hand
smissionwithnutoverforward
ertotransmissionstud.Placewinch
attachto powertake-offwithcot-
owerplantstabilizer rodtoleft-
ndclevispins.
shiftlever
andbracketwithkeywayendof
hicle.Insertkeyinshaft,install
inleft-handbracketwhenkeyin
rein alignment.Installhairpin
ndendof shaftandtightenclamp
centeredoverkey.Attachcontrol
sfercaseandshortarmof shift
evispins andsecurewithnewcotter
EPLACEMENT
andrearsectionsofpropellershaft
dently;however,itisnecessarytounbolt
ramebeforeintermediateandrearshafts
RemovalProcedure
oldrearwardyokeandbilgepump
angeofintermediateshaft.
vesprocket
s possibletoseparateyokeand
umpdrivesprocket.Raiserearend
earforwardbearingandpullshaft
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 325/401
ON,6x6
InstallationProcedure
eofyokeatforwardendofshaftto
cksorburrs whichwouldimpair
oilseal.Placeyokeoversplinesof
ndslideyokeonto shaftasfaras
sprocket
approximateoperatingpositionand
ocket.Seethatshoulderon sprocket
ntermediateshaftand installfour
ketandflanges.Replacelockwashers
yokeandflangetogether.
ShaftRemovalProcedure
earingassemblyfromcrossmember
swhichattachforwardbearingas-
mber.
nge
swhichattachforwardflangeto
andyokeofintermediateshaft.
rwardandremovebilgepumpdrive
tguard
rsideoftrunnioncrossmember
ftguardtocrossmemberandre-
t
swhichattachrearyoketo flange
eshaftforwardfarenoughtosep-
ift propellershaftandforward
ehicle.
ShaftInstallationProcedure
itionwithforwardbearingassem-
yoketoflangeofrear shaftusing
shers.
e
ftwithyokeat rearofinterme-
pumpdrivesprocket.Seethat
rsgrooveinflangeandinstall four
ketandflange.Replacelockwashers
yokeandflangetogether.
tocrossmember
lockwasherswhichattachforward
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 326/401
RIVE
nsertpropellershaftguardthrough
berandinstalllowernuts andlock-
movalProcedure
er
sdirectedinPara.239b.
assembly
semblyasdirectedinPara.238b.
fingbox
ampwhichattacheshosetorearend
5).
t
owardsleftsideofvehicleandpull
approximatelyfifteeninchesto
aring.Thenraiseend ofshaft
tunnel.
allationProcedure
eofshaftcollartoseethat itisfree
mightimpair efficiencyofthrust
dedend ofshaftthroughhosecon-
ewheninsertingshaftthroughstrut
do notscratchbearingandslide
eratingposition.
d waterpropeller
mblyasdirectedin Para.238c.In-
ctedin Para.239c.
SSEMBLYREPLACEMENT
yreplacementcanbeaccomplished
ediatepropellershaftis disconnected.It
atbearingbeadjustedas outlinedin
ssemblyisinstalled.
yRemovalProcedure
tepropellershaft
chingforwardbearingtocross-
datrearof intermediateshaft.
nutswhichattachrear yoketo
dfarenoughtoseparateflangeandyoke
tsideof vehicle.
ge
moveflangeretainingnutusing
oveflangeusingpullerKM-J-1714to
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 327/401
ON,6x6
assembly
ngassemblytocrossmemberand
yInstallationProcedure
ngcap
setscrewandloosenbearingre-
ersideofhousing.Thisis doneto
nitself withstrutbearingwhen
t.
y
untilbearingstrikesshaft collar
endofshaftanddrawflangeretain-
ithnewcotterpin.
apuntiltight,then backoffone
screwintopofhousing.Install
nut.Turn retainerpositioningbolt
g)down tightandinstallfour
utswhichattachbearingassembly
propellershaft
trearendof shaftusingfourbolts,
thenboltforwardbearingsupport
EPLACEMENT
mentisrecommendedwheneverpro-
asanyirregularityinsurfaceof propeller
ration.Instructionsasoutlinedbelow
lywheninstallinganewor reconditioned
alProcedure
of shaftandremovelocknutand
61)overpropelleras shownin
extendingthroughpullerplate
meuntilpropellercanbepulled
ionProcedure
yand installpropeller
slipfitin keywaysinshaftandpro-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 328/401
RIVE
aferPropeller
cekeyextendsoutofshaftand
erhub.Thereshouldbe .010"clear-
ndbottomofhub keywaytomake
ftand notthekey.Startwaterpro-
thkeywaysinshaftandinhub
eronshaftas faraspossible.Insert
eyandpropellerinto positionby
htennutuntil propellerisseated
and installlocknutandcotterpin.
LACEMENT
ttbearing,pouredwithshaftassem-
ntofbearingisnecessarywhenevershaft
eshouldnotbeattemptedbytheUsing
nnelasthisprocedureisbeyondthescope
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 329/401
andinspection243
cement244
245
46
djustment247
48
nce249
ent250
ION
escribedinthisgroupinclude
mountings,reboundclips,torquerodmount-
shockabsorbers,andattachments.The
semi-elliptictype.Leavesareheldto-
psand properlylocatedonspringseatby
springshasaneyeformedat each
shing ispressed.Thirdleafis alsowrapped
pringis mountedinshackle,whilerear
instationarybracket.Rearspringsare
ewithcenterofspringheldto springseat
at iscarriedontrunnioncrossshaftby
dsofspringride onaxlehousingandare
ckwardtopermit springtolengthen
mpressionandreboundaction.
nthisvehicleatfront springsonly
tingtypei nterconnectingframeandaxle.
G
auseProbableRemedyParagraph
LubricateSect.VI
cketRemoveandcleanor
adtoratedcapacity....7
nCorrectloadingpractice.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 330/401
ause
bsorbers
erating
is-
s in
nting
gsloose
frozen
VI
VI
ENANCEANDINSPECTION
nanceitemsareimportant:
houldbedrawnup tightenoughto
wear.Shacklesshouldnotbedrawnuptoo
nofshacklebolt orpin.Drawupnuts as
ckoffone halfturntopreventbinding.
sfullsize ofhole.
uldbe kepttightatalltimes.
frontspring axleandrearspring
ht undernormalspringload.
edrawnup tightenoughtoholdleaves
ctingfreemovementofleaves.
acklesandbracketsshouldbeper-
articularlyafterextensivewateroperation.
cation."
mostofresiliencyorelasticproper-
acethemwithnewones,ratherthanat-
mberbyheating,bendingand tempering.
of torquerodsshouldbekeptclean
ases.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 331/401
ON,6x6
stallation
REPLACEMENT
gs.167,168,and169)
ofvehicleuntilspringtension iscom-
rwheelstokeepvehiclefromrolling.
dshacklepins
removeshacklepinclampbolts,
toolKM-J-2310asshowninFig.169
acklepins.Greasefittingsshouldbe
cleanedandinspected.
anedandinspected.Aleadhammer
acklepinsinplace.Becertainthat
operalignment.
d clampbolts
sechannelisnot cloggedandthat
encleanedbeforethreadinggrease
mpboltsshouldbe lubricatedwitha
l beforeinserting'intoplace.Be
ein shackle,andclampboltgroove
eralignmentbeforeinsertingclamp
mpboltsusing lockwashers,nuts.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 332/401
hackleandBracket
et
lePin
Bushing
ePin
et
ACEMENT
tnuts.This operationwillremove
gtoseat anddisconnectshockabsorber
epin.FollowinstructionsinPara.244
klepins.
slottedhexnut, andusetoolKM-J-
ovespringassembly.
tshouldhave greasechannelcleaned
theknurledshoulderofbolt isinalignment
eleadhammerto driveboltinplaceif
hexnutonboltand aligncotterpinhole.
nstallshacklepinandclampboltas de-
blockinposition,insert"U"bolts
sorberlinkinpositionand threadnutson
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 333/401
ON,6x6
emoval
NT
ocedure(Fig.170).Rearsprings
ectedandadjusted.Todothis properly,
dfromchassisasfollows:
nnectsprings
fttoframebracketandraise to
movefournutson"U"bolts andre-
block.Loosenspringseatclamping
s seatuntilfrontendcan belifted
stallation
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 334/401
eat
tandStud
xle.Pullspring forwarduntilrear
wardaxle.
Procedure.Installationofrear
omplishedwithoutchangingpositionof
cketonforwardrearaxleandslide
ofspring willclearbracketonrear-
ardrearuntil centerboltdropsinto
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 335/401
ON,6x6
eatBearingPuller
espacerin positionontopleafof
andaligned properly—threadnuts
mpingcapscrews.
EARINGADJUSTMENT
s(Fig.171) mustberemovedand
tasdirectedinSectionVI ifsatisfactory
btained.Bearingsshouldbecarefullyad-
ccordingtothefollowingprocedure:
ringcap
inPara.246a.Removebearingcap
capscrews.
ockingnuts
stingnutlockandremovelocking
ustingnut,andadjustingnut
eattogetherwithouterbearingcone,
cup.
coneandseal
ng puller(Fig.172),removeinner
sealparts.
upsthoroughlywithkeroseneor
gclean,inspectthemcarefully.
aringrollersarepitted,theyshould
oneinwhichsmallparticleshavebroken
epressions.
seatsrollbackandforthas vehicle
n,butbearingrollersalwaysreturn tosame
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 336/401
fact,bearingrollers restinthisone posi-
shedlinesappearonbearingcups,showing
ers.Theselines arespacedaccordingto
contactofeachroller.Theselinesare not
ldnotbereplacedunless surfacesofcups
en.
eresultingfromhandlingduring
ngandforsandor mudinsideofseal.Re-
nditionsexist.Soakbearingsinengineoil,
kbysqueezingchassisgreaseinbehind the
reasewiththe surfacesoftherollers.
easeto theshaftbetweenthebearingsso
egreaseinthe bearingssoftenenough
,oilsealfelt,oil sealwasher,and
Lubricatebearingsthenplacein
g seatoncrossshaftend.
washer
r,andadjustingnut(inner)over
suitablewrench,pulladjustingnut
ment.Springseatshouldbeoscillated
tgreasefrombeingsqueezedout
cap
hnutof convenientsizebrazedon
p)isto beinstalledonfaceofspring
pscrews.Puttorquewrenchon
equiredtomovespringseat.This
.lbs.
ndadjust
ightenorloosenadjustingnutto
tingeffortat thetightestplacewhile
uewrenchanddummycapare not
thodoftestingbearingadjustment
rtofaceof springseatandmeasure
aleat endofbar.Readingofscale
s.ifbearingadjustmentis correct.
enedproperly,replaceadjusting
uter).Tightenlockingnut securely.
etoseethatit hasnotbeenchanged
endtangsofadjustingnutlockover
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 337/401
TON,6x6
ockingnut.Replacebearingcapand
espring—refertoPara.246.
ACEMENT
chside, connectrearaxlestoframe.
tocrossshaftbracketswhereasupperrods
stobracketswhichareboltedthroughhull
er.Bothendsoftorquerodsarerubber
astaperedmountingstud.Taperedstuds
mes.Rubberbushinginendsof rodsre-
exceptthattheyshouldbe sprayedwith
reventcrackingordeteriorationofrub-
gseatsand raiseuntiltensionis off
mtorquerods—forcetorquerodpinsoutof
ta clawbarbetweenbracketandhubof
ottomof bracketsharplywithaheavy
clawbar.Donot prytoohardorrubber
bedamaged.Proceedtoremoveupper
memanner.
romtorquerodpins, andseethatrub-
free fromoil,greaseordirt.I nserttorque
wolowerrods oneachaxleshouldbe
rodsare installed.Forcetorquerodstuds
odand aheavyhammer.Theninstalllock-
securely,lowerandremovejacks.
MAINTENANCE
uire specialattention,exceptperi-
eningoflinksandcheckingoffluid levels
hockabsorberfluidand checklevelatpe-
oceedingwithoperationonshockabsorber,
nsandshackles.Seethattire pressuredoes
ommended.Smootheroperationisobtained
tefreelyandtiresarenot overinflated.
ion
xleandpull shockabsorberarmdown.
yand thenstopsandcontinuesmoving
way,thereisnotenoughfluid inshock
sorberthoroughlyandremovefillerplug.
erfluid.Usefluid gun.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 338/401
moveshockabsorberarm upanddown
nto pistoncylinder.Theninjectaddi-
.Toprovidenecessaryairspaceinshock
apedowntobottomedgeof fillerplughole
placecapgasketswherevernecessary.
asherswhichhavebeenoperatingwith
ybecomewornandcauseleaksaround
canonlybe correctedbyreplacingshock
REPLACEMENT
ockabsorberarm.Removebolts
rtoframeandremoveshockabsorber.
rameand connectlinkbetweenshock
Wheninstallationis complete,checkall
arypaintabsorbersandfittings.Check
pinswell lubricatedandspringboltsand
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 339/401
andinspection...254
255
kageadjustment257
t258
ement259
ION
hisvehiclecomprisestwosystemswhich
ingwheelandgear,draglinkandtie rodcon-
em;whereas,steeringwheelandgear,cable,
comprisewateroperationsystem.Steering
pe.Thisdescriptionrefersto ballswhich
wormandwormnut.
.173).Ruddercablespoolis heldto
thshear pin.Approximately50Ibs.pullat
edto brakethisshearpin.Ruddercableis
ofspool andretainedbyaclampand two
ned,movementistransmittedthrough
orshaftinsidesteeringgearthrough pitman
link andsteeringarmtofrontwheels.
wheelalsocausesruddercablespoolon worm
der-controlcable,thusactuatingrudder
ectionIII,"ControlsandOperation"for
rdingsteeringonbothlandand inwater.
G
ringsystemis closelyrelatedtoother
eneverdiagnosingsteeringdifficultiesother
bechecked.Asymptomindicatingsteering
ceofdifficultyinother units;i.e.,frontaxle
ension,tireinflation,wheelandtiremounting,
es.Symptomswhichindicatepossibletrouble
dbelow withprobablecause,probablerem-
graphsinwhichremediesareexplained.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 340/401
ause
orCheckandadjust worm
sand sectorgear
dCheckandadjustcorrect-
gAdjustmountings255
anStraightenpart,ifprac-
orreplace258
bricateasrequired,
ect.)VI
Replaceassemblyordrag
k 258
Adjustrudder cable259
ignfrontend andreplace
rnparts74
atetires288
ng control
orCheckandadjust worm
gs,andsectorgear
Adjustifpossible,or re-
56
gsAdjustandtightenmount-
Replaceassembly258
c- Tightenpitmanarmlock
edAdjustwormbearings,see-
gear lashordraglink
essary255
Adjustruddercable257
ignfrontend andreplace
rnparts74
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 341/401
TON,6x6
auseProbableRemedyParagraph
dtosteeringwheel
Checkandadjustcorrect-
orCheckandadjust worm
dsectorgear
n-Tightenpartsandalign
nt end74
oseAdjustbearings284
to rightandleft
enpart,i fprac-
Adjustorreplacestops...74
lyAdjustrudderlinkage....257
ENANCEANDINSPECTION
eandinspectionoperationsasoutlinedin
mplishedaccordingtotheintervalsstated.
antinspectionandmaintenanceproce-
wormandsectorshaftbearingsasdirected
USTMENT
entsnecessaryforcorrectsteering
ringadjustment,outlinedinPara.255b.;
nt,Para.2.">c.andsteeringgearmounting
Steeringgearadjustmentprocedureisout-
vehicle.Howeverifgearisoutofvehicle
ewithgearin aviseasadjustmentpoints
e.
entProcedure
arlinkage
ustedin vehicleremovecotterpinfrom
uideclevispin (seeFig.173),and
ey,therebyprovidingslackincable.
esterncompartmentafterhatchcover
eelto rightandtoleft asfaraspos-
bleintoenginecompartment.Discon-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 342/401
Rudderlinkage
kfrompitman armbyremovingcotter
.
ntopreventbindingofshaft
tbracketextendingfromwindshield.
oltandnut attachingsteeringcolumn
et.Tightenboltsclampingsteeringgear
nderstructure.
earings
utandturn lashadjustercounter-
174).
o keepsteeringwheelinmotion
yeitherrightor leftasfaras itwillgo—
Caution:Approachendofgeartravel
connectedaswormnutinunitmay
scaleKM-J-544Atomeasurepull r
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 343/401
ON,6x6
torGearLash
eelin motion.Scaleshouldbeusedat
linethroughlengthofscaleat right
eeFig.175.) Ifpullrequiredto keep
en1and 1^pounds,wormbearing
Fig.176)
ltsandendcover.Takeoutas many
ateall wormshaftendplaywhenend
tsfully tightened.
elrimpull
psteeringwheelin motionasoutlined
fnecessarytoobtainproper pull.
dgearfeels lumpywhenturning,
dgearmustbe replaced.
mentProcedure(Fig.174)
arlinkage
2under"WormBearingAdjustment
ionofsteeringgear
ningsteeringwheelfrom righttoleft
approachendpositionscautiously,
berofturns.Thenrotatewheelback
n centerposition,roundheadpins
llbeattop.
mpull
thenturnlashadjusterclockwiseuntil
ortoothlash.Checkpull withspring
as showninFig.175,andmeasure
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 344/401
caletoCheckAdjustments
ulledthroughcenterposition.Readjust
%poundsis notobtained.
elrimpull
kpullagainto besureadjustmenthas
AdjustmentProcedure
rmountingbolts
ingtoframenutsand placesealingcom-
.
mntobracebolt
achingbracetolowerwindshieldand
t,thenconnectsteeringcolumnto
ecurely.
ntingbolts
whichattachgear housingflangeto
bolt shouldbetightenedlastas this
erlypositionsteeringgear.
pull
elwithspring scaleasdescribedunder
ntProcedure"Para.255b.and"Sector
cedure"Para.255c.afterallmounting
edslimits,causemustbelocatedand
age
armas outlinedinPara.258.Pullall
ern compartmentandinstallrear
levispinand newcotterpin.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 345/401
TON,6x6
Bearings
ENT•
incorporateanautomaticadjustment
of opposedwedgeblocksandspringas
ofwedgeblocksis indicatedbyroundhead
mitofautomaticadjustmenthasbeen
ojects3«"measuredbetweensocketbodyand
is timemanualadjustmentbyscrewplug
ary.
justmentProcedure
t
screwplugtodraglink andturnplug
ingwearindicatorpin intight.
ubricatedbeforeadjustment.Backoff
dinsertcotterpin.Ball jointsmustbe
rDragLink
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 346/401
geatStern
dplay andyetlooseenoughtoallow
OXANDLINKAGEADJUSTMENT
dercable,andlinkagemustbe correctly
eproper steeringonlandaswell asinwater.
mentisaccomplishedbytighteningor
dderstuffingbox.Adjustmentisrequired
fwaterentersthroughthestuffingboxor
rheated.Asmallseepageofwaterisnormal
dlubricatestuffingbox.Cableorlinkage
enevercablesagsorrudderdoes nothave
enttotherightor totheleftof straight-ahead
ustmentProcedure
enthatchcover
thatchcoverandentersterncompart-
fingbox.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 347/401
ON,6x6
ackingnut1/6turnand tightenlock
d,waitafewminutesandtighten
e.Whenlimitofadjustmentisreached
ffingboxhousing)backoffpacking
mentProcedure(Figs.173and178)
estopscrews
ndplacesupports behindfrontaxle
wheelstohangfreelyandadjuststeer-
outlinedin Para.74g.
ength
tingrodbetweenruddercontrollever
distancebetweencenterlinesofball
s not21%* loosenlocknutsbehind
dturnroduntil thisdimensionis
ficientlyperformthisoperation,one
ne inthesterncompartment.Turn
mrightandleftturn positionsand
udderstoplever contactsclipswelded
upport channel.Levershouldnot
verhits eitherclip,cableclampsmust
usteduntilthereis approximatelyequal
weenleverandeachclipwhenrudder
tturnposition.
LACEMENT
entisrequiredwheneversteeringgear
terwormandsectorgearbearingshave
eeringgearmayberemovedthroughtoe
gaftermountingbolts,linkageandplatein
ved.
Procedure
lumnatinstrumentpanel
alfromsteeringcolumnandremove
ssteeringcolumntobracketwhich
hieldpanel.
intoeboard
attachthreesectionsofclosureplateto
es.
kage
nkfrompitmanarmbyremoving
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 348/401
llstud.Removepitmanarmnutand
lerKM-J 1376-G.
trolcable
throughhatchcoveropeningand
oldsendofleft-handcable.Remove
sconnectedcableendthroughloom
ltheendis inenginecompartment.
chcableclamptoruddercablespool
ool.
assembly
hichattachsteeringgear housing
eeringgearthroughclosureplateopen-
vefromvehicle.
nProcedure
ghclosureplateopeningintoe board
esiderail.Placecork gasketbetween
nsert 4mountingboltsthroughflange
annelplateinpositionagainstoutside
lockwashers,usingaliberalamount
erheadsofnuts.Do nottightenmounting
ounting
ngsteeringcolumnbracetolower
tpanelsaretightened,thenconnect
yinstallingbolt throughcolumnin
nutandtightennutsecurely.Tighten
attachsteeringgear housingflange
nt boltnutshouldbe tightenedlast,
o properlypositionsteeringgear
e
tedend ofsectorshaftwithflatsection
atchedanddraw pitmanarmuptight
d lockwasher,usingawrenchwith
tightennut.
mandsideof hullandattachcableto
edinPara.259.
nal
osteeringcolumnandinstall closure
gear
aras directedinPara.255,then
anarm.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 349/401
ON,6x6
GEREPLACEMENT
canbeaccomplishedwithoutdisturbing
Ruddershaftand linkageisaccessiblefrom
nt.
dure(Fig.178)
udder controllever
dershaftend ofconnectingrodand
tingscrewanddisconnectrodfromrud-
lampboltnutsin rudderstopand
versdownwarduntilkeyswhichposi-
posedandremovekeys.
box
offpackingnutoneor moreturnsto
ughstuffingbox.
aft
ntportionof sterndeckfrontplate
aft nut.Withdrawcotterpinand
andshaftandremovefromunder-
edure(Fig.178)
ng boxfromundersideofvehicle.
andstopleverover shaftandinsert
installshaftnut.Drawnutup tight,
leandbendflatovernut.
udder controllever
eywayandsliderudderstopleverover
.Insertkeyin keywayinmiddleof
roverkey andtightenclampbolt.
ox
asdirectedin Para.257b.
ure
tillerupperarm
ourclampsholdingendsofcablein
cableends outofthimbles.
eringcolumnspool
eftsideofhull intoenginecompart-
hichattachcableclamptospooland
dure
ation
einastraightline tobesurethere
ubleoneendbacktowithineight feet
kthecenteroftheloop.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 350/401
nspoolforinstallationof cable
ng,andsteeringwheelretainingnut.
eelusingpullerKM-J-452-G.Remove
ngcolumnjackettobracketwhich
hieldpanel.Removetwoclampbolts
gtosteeringgearand slidehousing
derspool.
bothfront wheelscleartheground
eright turnposition.Placecablein
nd installcableclampwithlongend
rportionof spool.Rollshortendof
ndmovewheelsto "straightahead"
eelswillwindlongendof cableon
he sametime,shortendofcable
werpartofspool andmustbeun-
gina ballfacilitatesunwinding).
htahead"positionwindtwoanda
earoundlowerpartofspoolin the
lampedonspool.
omatleftsideof vehicle(Fig.173)
rough flapatsideofhull andplace
de throughupperloomtostern
eshortendofcableoverlowerpulley
mto pulleyinsterncompartment.
steeringgear
versteeringgearand holdcables
hrough slotinhousing.Rotatehous-
n openingofhousingandinstall
m
edirectlytotiller arm.Passlong
ncompartmentcenterguidepulley,
entright-handguideassemblypulley
Para.257c.Donotkinkcable,
arPinReplacementProcedure
pin
iameterinlocatinghole inspool
eeringwheeluntilrodor nailfalls
ecesofpin outwith£,"diameter
ormshaft andrudderarein proper
inin shearpinhole.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 351/401
NPOWER
andinspection263
ent264
ION
dinthisvehicleis adualtwo-speed
ooutputshaftsat therearofpowertake-
winchpropellershaftand uppershaft
drive unitsareequippedwithshifter
epumpand winchtobeoperatedinde-
fisattachedtotransmissionwith6studs
armesheswithreverseidlergear in
sitpossibletooperatepowertake-off,re-
tioninmain transmissionisplacedin.
nespeedreverseforthe winchdriveshaft
eofthe threegearsonthepowertake-off
ertake-offdrivegear.Tirepump driveis
utchconnectingpowertake-offdriveshaft
G
esoccurringwithpowertake-offwould
oisyoperationshiftingdifficulties.Prob-
emediesareshownin thetrouble-shooting
auseProbableRemedyParagraph
vis- Checkqualityand
tityofoilin trans-
ngTightennuts264
yReplacepowertake-off
sketsInstallcorrectnumber
dofgaskets264
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 352/401
POWER
auseProbableRemedyParagraph
aintransmissionand
thReplaceassembly264
on Cleanshiftrails263
ENANCEANDINSPECTION
eandinspectionoperationsasoutlined
omplishedaccordingtointervalsstated.
requireanyadjustmentsifit isprop-
on;however,itisimperativethat shifter
y paintorforeignmaterial,asshifter
oughoil sealsifshiftingis tobeaccom-
Iti srecommendedthatshaftsbecleaned
dat theregularpreventivemaintenance
EPLACEMENT
eplacedwithoutdisturbingtransmis-
driveshaftandtire pumpchainaredis-
ndedthatforwardleft-handfloorboards
removedandreplacementoperationsbe
yingonhissideon thebottomofthehull
alProcedure
smissionandallowlubricantto drain
ingoperations.
hain
n.
eshaft
oldsyokeofdriveshaft topower
riveyokeoffshaft.
ndwinchcontrolrods
pinsattachingwinchcontrolandtire
of shiftershaftsanddisconnectrods.
ff
rtake-offunitsothatit willnotbe
oppingduringremoval.Remove2
e-offsupporttotransmission,then
tachingpowertake-offtotransmis-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 353/401
ON,6x6
-off.Thenumberofgasketsused
ndtransmissionshouldbenoted,as
eusedduring installationoperations.
transmissionopeningto prevent
owertake-offisdisconnected.
tionProcedure.Beforeinstalling
ecttransmissiontoseethatnodirt or
edwhilepowertake-offwasremoved.
ansmission,makingsurethatsame
reremovedareinstalled.Drawup
dtightlyandinstalltwo powertake-
dpowertake-offsupporttotrans-
winchcontrolrods
chcontrolrodstoends ofshifter
dnewcotterpins.
aft
haftand slideyokeofdriveshaft
tshaft,makingsurethatkeyandkey-
s properlypositioned,tightenset
rsprocketsat tirepumpandwinch
lubricant
lugandfill transmissiontoproper
ctedinSectionVI.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 354/401
AXLE
andinspection268
nts269
placement271
ent272
ION
ntiallyatwo-speedauxiliaryunit,con-
outputshaftsfortransferof powertoeach
islocatedbetweentheframesiderails
nsfercaseandis drivenbytransmission
pring-loadedtypeoilsealsareused at
maindrive gear,drivenshaftandfront
din shiftershaftsintransfercaseare felt
ners.
gearsis accomplishedmanually
eeFig. 179)totransfercaseshiftershafts
forksfor actualgearengagement.
obtainableforbothfrontandrear
axlemustbeengagedbeforetransfer
wrange. Instructionsforcontroloftrans-
erationareoutlinedin SectionIII,"Con-
G
ccurringinmaintransfercasewill
oisyoperationandshifting difficulties.
ptoms,probablecausesandremediesfor
ur.
auseProbableRemedyParagraph
ollowrecommended
nspect,cleanand
pring269
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 355/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 356/401
AXLE
ause
aph
9
I
ENANCEANDINSPECTION
ailyandperiodicintervalsandrou-
PreventiveMaintenanceandInspection,"
ntransfercaseandcontrols.
formationonproperlubricationof
n SectionVI,"Lubrication."
ADJUSTMENTS(Fig.179)
tmustbemaintainedtoprovideprop-
nsfercase.Adjustmentofdeclutchingcon-
nshiftershaft poppetballdoesnotseat
pport.Needforadjustmentofhighand
dicatedwhenshiftershaft poppetball
aftatshaftsupportor whenclearance
bracketondeclutchingcontrolleveris
ControlLeverAdjustmentProcedure
seatpositions
ver'sandcargocompartmenttogain
vecotteratclevispinwhichattaches
frontaxledeclutchingcontrolshaft
ftershaftin andoutoftransfer
etballisenteringdepressionsin shaft
edpositions.Leaveshaftin"out"or
ver
erasit shouldbeslightlyforward
osition.Whenfrontaxledeclutching
tion,clevispinatfrontof declutch-
upwithholein declutchingcontrol
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 357/401
ON,6x6
hingcontrolrod
ntransfercaseremainsindisen-
ein adjustableyokeatendofde-
holeincontrolshaft lowerinner
ndadjustableyokeandturnyokeas
n yokeandcontrollever.Replace
d besureyokelocknutis again
verAdjustmentProcedure(Fig.179)
seatpositions
ver'sandcargocompartmenttogain
vecotterandclevispinattachinghigh
erendofcontrollever.Moveshifter
rcaseandlocatepoppetspringseats
tin neutralposition.Thisisbetween
ver
everindisengagedpositionandset
leverso that%"clearanceexists
edleverandbracketon declutching
rod
tableyokeofcontrolrodandlower
lineup,loosenadjustableyokelock
essarytolineupholes.Replaceclevis
ureyokelocknutis againtightened.
ENT
moveordisassembletransfercasein
rontendofmainshaft,forwardrearaxle
iveshaft.Thesesealsareaccessibleafter
ringretainershavebeenremoved.Oil
rive shaftrequirespartialdisassembly.
ccessibleaftershiftershaftsupportis
se.NotifyOrdnance.
SEMBLYREPLACEMENT
emovefloorboardsindriver'scom-
cargocompartmentfrontbulkheadand
partmentfloorinorderto removemain
nd180.)
driver'sand cargocompartment
ver'scompartment,airintakegrille
ompartmentfloor.Removecargo
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 358/401
AXLE
T
HAFTJB?
HAFT~
stallation
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 359/401
ON,6x6
eadasoutlinedinPara.214c.
tsatthefourtransfercaseflangesas
PropellerShaft,DrivingAxle."Re-
rshaftasdirectedin Para.237.
seandhandbrakecontrolrods
pinsattachinghighandlowspeed
dstoleversonrear crossshaft.Also
insateachend ofhandbrakecontrol
ovespeedometercablefromtransfer
y looseningknurlednutwithpliers
rivegearshaft.
removeboltsandnuts (sevenbolts
ngtransfercasecrossmemberto
member,transfercaseandhandbrake
mbly.
rfromtransfercase
haftmayberemovedfromtransfer
rsaredisconnectedfromhighand
rshafts(removecotterandclevis
ngbolts holdingtransfercaseto
ed.
Figs.179and180)
crossmember
ssmember,installingtheeight
sfercaseisplacedin vehicle.Be
ed underheadsofmountingbolts.
clutchingshiftershaftsto cross
s,usingnewcotter pins.
vehicle
ossmemberintovehicleandinstall
chattachcrossmembertoframe,
olrodto rearcrossshaftlever,using
Replacespeedometercabletotrans-
p.When replacingcable,besure
lemesheswithdrivengearshaft.
olrodtocrossshaftleverwithclevis
ehandbrakecontrolrodand attach
kel everwithclevispins.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 360/401
AXLE
tasdirectedin Para.237.Connect
gesof transfercaseasinstructed
Shafts,DrivingAxles."
oroperation
encompletelyinstalled,itshouldbe
ommendedlubricant.Adjustcontrols
REPLACEMENT
versunderdriver'scompartmentfloor
aft attransfercasecanbereplacedinde-
eplacementproceduresareitemizedin
shaftandbracketattransferreplacement
Para.272d. ande.
Procedure(Fig.179)
ver'scompartmenttogainaccess
owerlevers
swhichattacheachuppercontrol
rlever.
omshaft
nddeclutchingcontrolrodsfrom
akingout cotterandclevispins.
tchingcontrollowerleveranddrive
emoveWoodruffkeywhichholds
mpboltin declutchingcontrolshaft
er.Removekeyfromendofshaft
tsideofframe)out offrame
andhighandlowcontrolleversfrom
mbracket.
nProcedure(Fig.179)
erson shaft
oughouterbracketbushingwith
erofvehicle.Thenplacedeclutching
twithstop padtowardscenterof
yintokeywaynearcenterofshaft
proximatepositionasleverandshaft
ghandlowspeedlowercontrollever
Woodruffkeyintokeywaynearend
gcontrolshaftinnerleveroverend
ever clampboltwhenleverand
n.Whenshaftisproperlylocatedin
ftingleversarefree,tighten clamp
owerouterlever.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 361/401
ON,6x6
ers
ontrollevers,usingtwobolts,nuts
.
ercontrollevers,usingclevispins
partshavebeeninstalledorif
een changed,readjustasdirected
cketRemovalProcedure(Figs.179
ndlowshift lever
akegrille togainaccesstorear
ghandlowcontrolrodfromouter
ecotterpinandclevispin.Loosen
h levertowardsrightsideofvehicle
sed.Thenremovekey.
cket
tsattachingcrossshaftbracketto
acket,outerhighandlowshiftlever
haft.Shaftmaybewithdrawnfrom
terclampboltisloosened.
Procedure(Figs.179and180)
etandouter lever
ttocrossmember,usingthreebolts
hroughbracketouterbushing with
erofvehicle.Thenplaceouterhigh
ftwithstoppadtowardsendof bush-
keywaynearcenterofshaftand
matelocationasleverandshaftkey
owshiftanddeclutchinglevers
ntrolleveroverendofshaft.Then
waynearendofshaft.Placeinner
verendofshaft,beingcarefulto align
dtightenleverclampboltwhen
dinnerendofshaft areeven.When
tionedin bracketandbothleversare
outerhigh andlowshiftlever.
sshaftlevers,usingclevispins and
s havebeeninstalledoriflength
anged,readjustas directedinPara.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 362/401
andinspection276
ustment277
79
ION
dtorearfaceof clutchhousingby
shers.Inaddition,twolowermounting
gthofwirethreadedthroughtheheadsof
ssembly(engine,clutch,andtrans-
placebymeansofastabilizing rodas
vespeedsforwardandonereverse.
lythroughtransmissioninfourthspeed
ereas,infifthspeedand allotherspeeds
erisdirectedthroughgearsof various
gearratio.
shiftedmanuallybyconventionalgear
orrectgearratioforalloperatingcondi-
nsandinstructionsfortransmission
ectionIII, "ControlsandOperation,"
G
mefromthe transmissionmayactu-
rpart ofthechassis;therefore,beforeany
medontransmissionathoroughcheck
with driverifpossible,todetermineactual
emayactuallybein driveline—dueto
versaljointsloose,outofalignmentor out
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 363/401
ON,6x6
ause
is-
or
.
ns-
aft
s.
9
VI
9
CEANDINSPECTION
eandinspectionoperationsasoutlined
MaintenanceandInspection,"shouldbe
theintervalsstated.
antinspectionandmaintenancepro-
eunit.Referenceshouldbemade toSec-
ypeoflubricant,intervals,andmethods
it.
movementofshiftlever ineachof
testis morereadilyaccomplishedwhen
willlevelanytendencyofgearsto slipout
encountered,needforcorrectiveservice
NTINGADJUSTMENT
d,connectedfromwaterpropeller
tonleftsideof transmissiontowaterpro-
upport,limitsforwardmovementofpower
justedwhenevertransmissionorstabilizer
Fig.181)
onas showninFig.181andinsert
keandbracketonwaterpropeller
rt.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 364/401
bilizerRod
nsmissionendofrod untilholein
ransmissionbracket.Installcotter
dtightenadjustableyokelocknut.
ENT
missionmainshaftis replaceableafter
aterpropellertransfercaseandtransmis-
e,andbearingretainerat rearofmain
Ordnance.
EMBLYREPLACEMENT
movedfromvehiclewithoutremoving
mmendedthatengineandtransmissionbe
erengineremovalequipmentisavailable.
verremovaloftransmissionfromengine
completepowerplantremovalinstruc-
g.182)
soffloorboardin driver'scompart-
ardsto supportsareremoved.
omofhull whichislocatedatrear
ission.Removetransmissiondrain
drain whileperformingremainder
omtirepumpfront supportboltand
mpsprocket.Placewireorrope
riser toholdtirepumpawayfrom
valprocedure.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 365/401
ON,6x6
stallation
Rod
Shaft
ossShaftand
olRods
ffsupport
ttachpowertake-offsupportto
ke-off(twoboltsatpowertake-off
on),andremovesupport.
kepedalandsupport
pinfromclutchpedalconnectinglink.
rodandoperatingleverbyremoving
ofpedalrod.Removehairpinlockat
e clutchoperatingleveroffshaft.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 366/401
spinwhichattachesbrakepedalto
ltswhichattachpedalsupportto
swhichattachsupporttoclutch
portandbrakepedal.
vercrossshaft
ntrolrodatcrossshaftleverby re-
n.Removeremainingboltsandnuts
ketstotransmission(onebolton
onenutonr ightside)andremove
ketsasanassembly.Thisassembly
ltingright handbrackettoclear
deoftransmission.
ercontrollevercrossshaftand
ertransfercasecontrolrodsatcross
tterandclevispins.Disconnect
ertake-offbyremovingcotterand
tterpinfromwinchcontrolleverto
ovelever.Removecotterandclevis
stabilizerrodto waterpropellercon-
acket.Removeforwardnutwhich
ettotransmission,winchcontrollever
airpin lockfromright-handendof
ndbracket,leverandshaftas an
mainingnutwhichattachesright-
onandslidebracketoffstuds.
otransfercasepropellershaft
etweentransmissionandwaterpro-
ovingfourboltsand nutsfrom
ellershaft.
ff
swhichholdpowertake-offtotrans-
rtake-off.Usecaretoseethatgaskets
ndtransmissionarenotlostasthe
stalledtoprovideproper meshing
arsupportsand loosenboltinfront
engineapproximatelyfourinches.
rsupportsandengineinsucha man-
outwhentransmissionisremoved.
headscrewswhichattachclutch
hhousing.Cutwirewhichlockstwo
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 367/401
ON,6x6
ingboltsandremovebolts(bolts
a %"endwrench).Supporttrans-
ovetwouppermountingboltswhich
tchhousing.Pulltransmission
clearofclutchhub.Donotlet
tonclutchdiscor discmaybe
slyaffectingclutchoperation.When
turntransmission90degreesand
opening.
ehicle
ringandsupportassemblyandre-
nyindicationofwear,asreleasebear-
eplacedunlesstransmissionis
ardenedbuttonsofreleaseforkare
gsupportbeforetransmissionis
oPara.111.)Placetransmissionin
carefulnottopermitassemblyto
utchdrivendisc hub.Transmission
efour mountingboltsareinstalled.
usingnewlockwashersunder
owertransmissionbolts (inclutch
ashersandpasslockwirethrough
ve beentightenedsecurely.
ousingpan
ngpantoclutchhousingwithfour
oveblocks(usedtosupportengine
val)frombetweenengineandengine
htenenginesupport bolts.
otransmission
ke-offtotransmission,checkthecon-
rectedin Para.264.Whenproper
xstud nutsandtightensecurely.
ansfercasepropeller shaft
etweentransmissionandwaterpro-
htenfourflangebolt nutsateach
ontrollevercross shaftandbracket
tbracketovertransmissionstuds
nbyinstallingrear nut.Reinstallleft-
ossshaftasan assembly.Securewith
inchcontrollevertotransmission
end ofcrossshaft.Attachwater
odstocrossshaft leverwithcotter
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 368/401
hcontrolleveroverstudand hold
otterpin. Connectwinchcontrol
nstallingcotterandclevispin. At-
rodto waterpropellercontrolcross
adjustas directedinPara.277.
and crossshaft
cketassemblyontransmissionand
oleonleftside. Installboltsinupper
dnut overstud.(Remainingbolts
tbe installeduntilpowertake-off
kepedalsupportis installed.)Con-
dtocross shaftleverwithclevis
pedaland support
edalsupporttotransmissionand
gthetwobolts whichattachsupport
bolt totransmissionthroughsupport
peratingleveronshaft andsecure
shaft.Connectclutchandbrake
espectivepedalsusingcotterand
upport
porttotransmissionandpowertake-
hendofsupport.
ocketsatpowertake-offandtire
pfrontsupport tobracketonwater
ftleft-handbracket.RefertoPara.
djustment.
forservice
lubricantto transmissionasdirected
."Installfloorboardsindriver's
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 369/401
GSANDTIRES
andinspection282
ent284
acement285
ent286
cement287
gtires289
maintenance290
reusedon eachaxleofvehicle.Front
tlytofronthubsby sixserratedboltsin
wheelis attachedtoawheelspacerbysix
tachedtoflangeonhubby sixseparate
sed ateachboltorstud. Tiresare11.00/18
withrubeand beadlock.Tiresare
asinglesplitlockring andthehingedtype
wheelassemblyismountedontopof
vehicle.
untedon opposedtaperedroller
eringknucklesandrear hubsaremounted
erbearingson tubularendsofrearaxle
driveflangeisattachedto hubbyeight
kedrumisattachedtoinner sideof
heelboltsandeachrear drumisattached
chattachwheelspacertohub.
er,air-cooledaircompressor,chain
f,islocatedjustbelowdriver'sseat.Air is
ankwhichisconnected,bycoppertubing,
fvehicle.Hoses,withfittingsforinflating
insidehull ateachsidejustaboveair
olledmanuallybya shiftlevernearright
tpumpinoperation,disengageclutch,pull
geclutch.Tostoppump,disengageclutch,
gageclutch.
G
uneventirewearorhardsteeringare
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 370/401
GSANDTIRES
opertiremaintenanceorhubbearing
epumpdrivechainis usuallytheresult
ustment.
ause
ewear
d.
unted
n-
too
n- Checkalignmentand
e
ust284-286
e
flateall tiresto40
d- Adjustbearings.284-286
perly.Adjustbrakes94
tly.Inflateall tirescor-
eplacetires289
e.Adjustbearings....284
in- Replacewheelorin-
89
bal- Replacewheeland
oisy
chain290
pumpdrive chainorsprockets
hain290
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 371/401
ON,6x6
ENANCEANDINSPECTION
aintenanceandinspectionprocedure
hubbearingsandtire pumpshouldbe
withinstructionsgiveninSectionV,"Pre-
Inspection."Regularlubricationwith
tquantity,andatspecifiedperiodsas out-
ation,"isessentialtotrouble-freeopera-
ftirepump.
ctionProcedure.—Maintenanceandin-
ingwheels,fronthubbearings,rearhub
mpis coveredinsucceedingparagraphs.
CE
hatwheelboltnutsbe kepttightat
to1000milesoperationtightennuts daily
tnuts fortightnessatregularperiods.
attightnessof boltnutsbechecked
oninwater.
ningProcedure
washerateachlower corneroffront
eskirts.Use wrenchandwrench
letoolkitand tightenoppositenuts
wnup wrenchtight.Neverusean
le.
grooveinhull andattachtohull
andnutateachlower corner.
ingProcedure
olts(SeeFig.183)
andlesuppliedwithvehicletoolkit
CERNUTS(square-headed
sitenutsalternatelyuntilallare
xtensiononwrenchhandle.
ht, tightenthesixwheelnuts(hex
enchtight.
GADJUSTMENT(SeeFig.184)
mentofwheelbearingsatregularin-
wheelsfromgroundandcheckingside-
.Usealongbar undertireanddetermine
nersideofbrakedrum relativetobrake
sarein properadjustment,movementwill
ovementisexcessiveorifwheelsdo not
s.Becertainbrakesdonot drag.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 372/401
GSANDTIRES
ndWheelSpacer
oss-Section
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 373/401
TON,6x6
—FrontHubBearings
eflange
and raisewheelsoffground.Bend
mheads ofcapscrewsattaching
movethecapscrews.ScrewTy
ppedholesinflangeandpull flange
leshaftbyturningscrewsalternate-
nge,lockringand gasket.Bend
yfromlocknutandremovelocknut
KM-J-1663.Thenremovenutlock.
g.185)
adjustingnutwrenchKM-J-1663.
nbackoffatleastone-eighthof a
tainitrotatesfreely.Checksidewise
etobrakedustshield (seea.inthis
gsareinproperadjustment,install
adjustingnutuntilshorttang on
tin adjustingnut.Bendshorttangs
utslots.
nwithwrenchKM-J-1663.Check
hisparagraph).If adjustmentis
nut lockoverintoslotson locknut.
flange
langeand replaceflangeonsplined
screw lockringandinstall cap
angetohub.Install fenderskirts
uts andnewlockwashers.Lower
04
odofAdjustingHubBearings
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 374/401
GSANDTIRES
ARINGREPLACEMENT
greplacementrequiresremoving
langebearingadjustingnutand lockand
mblyoffsteering knucklespindle.
sconnecthub
semblyasinstructedinPara.289.
flange,bearinglocknut,nutlock
tructionsinPara.284.
washerandouterbearingcone.Then
emblyoffsteeringknucklespindle.
earingconeandinneroil sealwill
lacement
r inneroilsealare tobereplaced,or
ricated,removeoilsealwith screw
ressfitin hubandshouldnotbe
ybecauseitcannotberemovedwith-
of innerrace.Inspectbothbearing
excessively,remove,usingadrift
ringsasfollows:
duse
ll par-
flat
ock
.
d
rect-
care-
y
ndrace
wear.
edry.
cator
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 375/401
ON,6x6
ng cupsinhubwithwideside of
cewithdriverKM-J-1660-3.Hub
tedatregularintervalsas explained
."Neverpackhubswithlubricant
ngsor hubsthroughpipeplugs.
ndcleanasinstructedabove.Then
ll ubricator(seeFig.186).
oilseal
n innercupandinstallnewoil seal
rtainsealisinstalledwith flexibleseal-
youtwards(awayfrombearing).
specialseal driverKM-J-2347.
one
blyintoplaceon knucklespindleand
herandadjustbearingsas instructed
ock,locknutand driveflangeasin-
acewheelandtireassembliesand
ra.283.Lowerandremovejack.
ADJUSTMENT(SeeFig.187)
ionsinPara.284a.todetermineneed
—RearHubBearings
hichbearingsareto beadjustedand
und.Bendtangsof lockplateaway
chingaxleshaftdriveflangeto hub
crewsandlockplate.Insert two
n flangeandpullshaftout ofdif-
drawingupalternatelyonthetwo
ened,withdrawfromaxlehousing.
2),(3)and(4) underPara.284b.
susedat rearwheelsinsteadof
sideof shaftdriveflangeandinstall
nerend intosplineddifferentialside
lateand attachflangetohubwith
elyuntilallare tightenedtoatorque
Lowerandremovejackfromunder
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 376/401
GSANDTIRES
utandSeal
ssSection
RINGREPLACEMENT
greplacementrequiresremoving
ocknut,nutlock,adjustingnutand bear-
enwithdrawinghubanddrum assembly
arytoremovethewheelspacerfromdrum.
connecthub
semblyfromwheelspaceronhubas
enremoveaxleshaft,bearinglock
using wrenchKM-J-870.
washerandouterbearingcone.Then
ofaxlehousing.Bothbearingcups,
ilseal,wheelspacer,brakedrum and
rumwillcomeoff withhub.Oilde-
remainin placeonhousing.
lacement
arings
erbearingconeand bothbearing
rdancewithinstructionsinPara.
ulwhenremovingouterbearingcup
earingcupandnotagainstsnap ring
snapring.
.285c.operation(2).
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 377/401
ON,6x6
ng cupsinhubwithwideside of
acesolidlywithdriverKM-J-872-1
4at innercup.
edinPara.285c.operation(3).
eand oilseal
n bearingcup.Installnewoilseal
iverKM-J-2346.Besureleatherside
ardsbearing(i.e.,syntheticrubber
one
blyintoplaceon endofaxlehousing
onein outerbearingcup.
.285c.operation(2).
emblyasinstructedinPara.289.
omicaloperationofthisvehiclere-
ntenance.Sincevehicleisdesignedto
ater,it maybenecessarytooperatewith
onditiontoobtain sufficienttractionto
ach.Undersucha condition,tiresmaybe
sarytoobtainrequiredtraction.Airpres-
ypoundspersquareinchfor operationon
umpwithair hosesisprovidedinvehicle
latedassoonasroadsurfaceconditions
tionandmaintenanceasdescribedin
entialtosafe andeconomicaltireservice.
re
moveallforeignmattersuchas
eplaceanymissingvalvecaps.Re-
onttiresarewearingunevenly,
instructedinPara.74.
redailywithanaccurategauge.
urelossanddeterminecauseofsuch
.-Alwaysusesame pressuregauge
fromdifferencesbetweengauges.
einflatedtosamepressure.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 378/401
GSANDTIRES
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 379/401
ON,6x6
2)2^^^BRAPD16213
odofInstallingBeadLock
NTINGTIRES
rerequiresremovingwheelfrom
gfromwheelrim, slidingtireandbead
beadlockring andtubefromcasing.
allingtubeandbead lockringincasing,
mandi nstallinglockringonrim.
ure
ingandraisetire offground.
assembly
nderskirtbyremovingbolt,nut and
erofskirt,then removethesixhex
scto hubandremovethewheel.At
xhexhead nutstoremovewheelbut
headednutsholdingwheelspacerto
e(SeeFigs.188and189)
mpletelydeflatetire.Uselockring
hvehicletoolkit.Insert straightend
nearsplit.Pry lockringoutofrim
movingbarbetweenrimandlockring;
tofrimcompletely.
gassemblyoffwheelrim.
tube
flatetubeenoughtospread tire
vingbarto pryuponbeadlockat a
inge.This willcollapsebeadlockto
ermit.Turn completebeadlockring
eFig.189-A)to providenecessary
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 380/401
GSANDTIRES
sbeadlockis removedfromcasing.
romcasing.
re
singandinflateenoughto holdtube
edathinge,insert valvestem
ng andinstallringinside tirewith
stoplaneof tire(seeFig.189-Afor
essbeadlockringintotire untilpart
vestemopeningis centeredbetween
ufficientlyto spreadbeadsoftire
untaswidth oftirebeadlock.Turn
e fromitspositionat90 degreesto
apositioninsameplane astire
ntopositionbetweenbeadsoftire.
onwhichwillbringlug(not shown
lvestem,directlyunderhorizontal
beadlockis inposition.Deflatetube
ckin placewithonefootandjerk
othhands (Fig.189-C)untilhinge
eadlockandbe certainthatitis
tsedgesare belowedgesoftire
n bothsides.
gassemblyoverwheelrimwithvalve
esurethatthelug onbeadlockring
wheelrim.
roughholeintirering sothathook
of wheelrim.Then,placeendoftire
erimwithsplit nearscrewendof
wagainstlockring andforcelock
tighteningupon screw.Usering
crew.Placeclamp(onchainat-
mandring toholdringin position.
etoolandmoveitto thenextholein
positionat thispoint.Moveclamp
eartheend ofscrew.Removethe
eries ofoperationsuntiltheentire
m.
pressure.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 381/401
ON,6x6
nkandLinesInstallation
ssembly
mblyonwheelboltson hub.Installthe
dtightenoppositenutsalternately
a.283.)Atfrontwheels,replace
movejack.
DTANKMAINTENANCE
oftirepump,airtankor linesisbe-
g ArmsPersonnel.Ifpumpbecomesinop-
However,inspectionandmaintenance
andc.in thisparagraphshouldbeper-
.190forinstallation.)
tomof tank.Withairintankunder
wideandblowoutall moisturefrom
ecock.Itisimportantto blowtank
ngcoldweather.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 382/401
GS,ANDTIRES
,
—fU
unting
tment
kets
pisinoperation,or ifinspection
chainorsprockets,chainshouldbe
nmaybenoisy.A tightchainwill
91)
disengagedposition,rotatepump
whetherchainbecomestightatany
erevolutionofpumpsprocket.To
ton adjustingboltandscrewthenut
portbracketupwardstotighten
osenchain.Whenchainisin proper
etight duringanypartofa revolu-
elooseenoughto besloppyatany
stedproperly,tightentopnut on
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 383/401
andinspection294
96
7
98
ent299
ION
orizontaldrumtype,mountedin
ent.Itisequippedwitha manuallyoper-
ngageor disengagedrumwithdrum
rakewhichbears againstflangeofdrum
sengagedandis designedtokeepdrum
hencableisbeingwithdrawnfromdrum
kwhichis designedtolockdrumfrom
sengaged,therebypreventingcablefrom
fvehicle;andan automaticwraptype
nedtohold loadatanypositionwinchhas
son,powerhasbeen cutoff.
rovidedthroughpower take-off
oftransmissionwhichisconnectedto
shafts.Ashearpin isprovidedindrive
Shearpinis designedtoshearwhenwinch
y,therebypreventingseverestrainson
rdriveshaft incorporatesastopcollar,
hichpreventsshaftfromslidingforward
fand whenshearpinisbroken.CAU-
infurnished—neverusea substitute.
expensivereplacementofparts.Spare
terncompartment.RefertoPara.24for
G
ctionsonuseof winchgiveninPara.
moothlyandwithoutexcessivenoise,
:
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 384/401
auseProbableRemedyParagraph
henshifted intogear
ged
sen-
stall newpin297
d
ad-
worn
mshafthousing
ted
being
ablewhencableis beingpulledout
m
95
wormFillhousingto level
ofhous-
drum
ENANCEANDINSPECTION
ectionV,"InspectionandPreventive
alsshouldbeaccomplishedonwinchand
detoSectionVI,"Lubrication,"for
onintervals,andmethodoffillingand
eptin thebestconditionandshouldbe
valsforrustand frayedcondition.Winch
cationofgrease(seeSectionVI,"Lubrica-
sting.Inaddition,thecableshouldbe
asdescribedin Para.24.
quires,asindicatedbytest,dragbrake
ldbeadjusted.SeeinstructionsinPara.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 385/401
ON,6x6
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 386/401
rake
TS
sgivenherehavetodowith operating
ustmentsrequiredwhenoverhaulingor
tmentsarerequiredandaremadeas
.Adjustmentofdragbrakeisre-
overrunscable whenitisbeingpulled
utch
arto rightasitwill go,thuscom-
fromsideof drumflange.
ombrake
wedgebetweendragbrakeandhead
tawayfrombrake.Thiswillmove
esonlocknut andadjustingnutat
enchandbackofflock nut.Turn
urn,thenremovewedgefordeter-
asbeenobtained;if not,repeatthe
mentbyturninglocknutuptight
tment.Needforadjustmentofauto-
he eventbrakefailstoholdload atany
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 387/401
TON,6x6
twhenpoweris cutofffromwinch.One
etherornotthisbrake requiresadjust-
nt
icleatthetopofa steepgrade.Fasten
hicleatbottomofgrade.Pull vehicle
.Afterareasonablehaul,depress
hwillstoppullingandvehiclebeing
ward.Inthe eventbrakedoesnot
sindicated.CAUTION:Brakemay
roperlyadjusted;however,ifhand
veron accountofheat,thisindi-
andshouldbeloosened.Brakeis
f properlyadjusted,willnotbecome
testhatbrakeshouldberelinedor
,thentightenadjustingnut1/2 turn.
tadjustingnut.
fbrake
asdescribedabove.
MENT
eremovedfromvehiclebyremoving
s andhullandbyremovingshearpin at
.Nootherunits needberemoved.
hainfallor othersuitablemeansso
dswungclearofvehicle.Removeleft-
upport boltnutandlockwasherand
bolts
rsupportangletobracketboltnuts
ovebolts.(Itisnot necessaryto
uardtosupportanglebolts.)
rbolt
toright-handrearsupportangle
ndremovebolt.
ntbolt
hatchcoverforaccesstowinchend
ormshafthousingstudsand shear
metohullbolt nutandlockwasher
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 388/401
studs
wormshafthousingstudswith lock-
wormshafttodriveshaftshearpin
pin. Swingleftendofunit clearof
cle.
eguard
ardandsupportangletobrakecover
ndtwosupportangletowormshaft
shers.Thisoperationisnecessary
ssembledto unitbeinginstalledin
ard
uardandsupportangleassembly
mreplacedunitto replacementunit
ngleto brakecoverstudswithlock-
angletowormshafthousing studs
hainfallorothersuitablemeans,
o positioninvehicleguidingwinch
yoke.
e
ortangletobracketbyinstalling
dnuts.Attachleft-handropeguard
ngbolt, lockwasherandnut.
andrearbolts
portangleto winchendframebolt,
lwinchendframetohull bolt,lock-
ds
ormshafthousingstudswithlock-
haft shearpinandcotterandclose
menthatchcover.
MENT
mshaft shearpinisaccessiblefor
ncompartment.Asupplyofspareshear
din aspecialmountingbracketlocatedin
winchwormshaft.
nthatchcoverhold-downboltwing
.Raisewinchdriveshaftslip joint
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 389/401
ON,6x6
stallation
mgroovein shaftsplinesandmove
bularshaft.
ersaljointforwardon splinesuntil
nholein winchwormshaft.Using
tionsofshear pinfromwormshaft
ke.
ft
greaseonforwardendof winch
versaljointyokeseizingto worm
atshearpin holeinuniversaljoint
holeinwinchwormshaft.
ardsothatshearpin maybein-
ointandwormshaft.Install shear
pin.Movestop washer(snapring)
haftsplines.(Fig.195).Closestern
randsecurewithhold-downbolts.
y.
CEMENT
catedjust insideofframeleft-hand
mationonaccessibilityoftheseshafts and
toPara.66. Itisrecommendedthat
essivelystartingatwinchandworking
mumaccessibilityformechanic,itis also
compartmenthatchcoverisopened;cargo
eftfrontfloorboards,anddriver'scom-
andfloorboardsareremoved.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 390/401
enterBearing
gs.192and196)
ntstopwasherfromits groovein
ong splines,towardsfrontofve-
emoveshearpincotteranddrive
ngasuitablepunch.
fromwinch
rwardon shaftsplinesuntil"U"
winchwormshaft.
atedriveshaftrearyoke
U"jointyoketorear endofrear
moveyokefromshaft.Yokeiskeyed
t
ehicle,throughcargocompartment
atedriveshaft
U"jointyoketofront endofrear
emovetworearcenterbearingto
earintermediateshaftwithrear
e.Center,centerbearingand"U"
hicle.Yokeis keyedtoshaft.Do
rbearing
frameboltnuts,lockwashersand
thenremovebearingandupper
willprovideroomforremovalof
diatedriveshaft
U"jointyoketofront endoffront
moveyokefromshaft.Yokeiskeyed
.Removeshaftfromvehicle.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 391/401
ON,6x6
earing
ngtoframeboltnutsand lockwashers
ers.Thenremovecenterbearing
ft
ing shaftofffront"U"joint
mvehiclethroughcargocompart-
t
U"jointyoketopowertake-off
fromshaft.Yokeis keyedtoshaft.
earingfromshaft
rmediateshaftisreplacedbynew
epressedor drivenfromshaft.
stallfront"U"joint yoketopower
kesetscrewsecurely.
splinesoffront"U" jointinsucha
soneither endofshaftwillbe in
ng
npositionbut donotattachto
tedriveshaft
haftinposition,insertingfrontend
ber,andinstallfrontcenterbearing
keywayofshaft andinstall"U"
amannerthat"U"joint yokeson
nsameplane.Tightenyokeset
ringtoframe
lts,insertboltsthroughbearing
onspacerssobearingwillbeat proper
nstallboltlockwashersandnuts.
edriveshaft
ngandrearcenterbearingon rear
ndplacedriveshaftin positionin
ayatfrontendofshaft andinstall
tenset screwsecurely.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 392/401
centerbearingsto frame
earingtoframeboltsin bearing
ceroverbolts,sobearingwill beat
ththroughframe.Install twospac-
toboltsand tightennutssecurely.
ingto frameboltsthroughbearing
stalllockwashersandnuts.Tighten
sition throughcargocompartment
keyinkeywayinrear endofrear
tall"U"jointyoketo shaft."U"
shaftmustbeinsameplane.
to winch
ntand install"U"jointrearyoke
llstopwasher(snapring) ingroove
Para.297.
closesterncompartmenthatchcover
REPLACEMENT
inkageis accessibleforremoval
mentleft-handfloorboardopening.Lever
mvehicleby removingcottersandpins.
artmentleft-handfloorboard.
olinkclevispin cotterandwasherand
otransmissionstudcotterpin and
emoveleverfromstud.
ake-offshiftshaftclevispin cotter
evispin.
cle.
verpowertake-offshiftshaftandin-
shiftshaft,placeplainwasheroverclevis
overtransmissionstud.
verstudand installcotterpin.
rollever inlinkandinstall clevispin,
river'scompartment.
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 393/401
sts300
301
CLATURELISTS
dLubricatingMaterialsSNLK-1
1919A4,fixedandflexible
,Thompson,M1928A1....SNLA-32
owning,M2,heavybarrel
ndmountsSNLA-39
CATIONS
ndLubricatingMaterialsTM9-850
ction
M9-1802
nanceTM10-525
ecautions,accidentsTM10-360
nTM10-545
enderandradiatorrepairs.TM10-450
1919A4FM23-50
,ThompsonM1928A1FM23-40
al..50,alltypesTM9-1225
dmotorizedarmyequip-
equipment—Association
rageofMilitaryMotor
10-580
M10-540
attackFM21-40
M1-455
0-550
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 394/401
of
Vehicle
o-
te..7
lates11
lates12
on
Dip
19
tion.25
Posi-
cles..41
rn...41
gside.42
h
ck45
Even-
100
0to 150
0to 300
o 70
0to
0to
om
om
ndTree49
ee...49
atch
atch
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 395/401
ON,6x6
gto
gto
149
ge...155
edPosi-
prings.158
158
ut...159
160
bly...161
62
65
8
171
ntrol
Dia-
m177
gCon-
nction
ngHar-
rterHar-
Switch
ness...182
orand
ing
...185
tage188
-
n..-207
...214
n..214
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 396/401
pPack-
n287
and
dCon-
Pump
entPanel298
nd
embled
y313
iveIn-
ngBox.321
eller...327
on330
nd
332
n332
ng
nkage.341
Lash.. 342
heck
ngs.... 344
k344
rn345
s354
tion...357
.
..
cer371
71
2
5
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 397/401
ON,6x6
3
82
fercase355
9
98
34
362
1-103
eopera-
e)
ntre-
ear114
186
15
t217
t218
ement.219
302
m124
alve....142
33
127
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 398/401
.......168
166
cement170
........172
173
5
nt239
ateddata)
lacement
ent220
66
winch....388
ts(See
xle)
ession
22
nt..223
5
nt239
stment254
3
2
236
nical....231
on227
8
80
259
m)
165
04
ntre- P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 399/401
ON,6x6
ent..
4
86
280
ent....285
t286
7
9
ment....290
ent133
8
e3
s195
97
01
95
00
butor..201
98
99
ch....21
cement..300
ighting)
9
02
tchre-
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 400/401
,clutch...160
86
gulator.208,210
244
(Alsosee
5
80
er320
wer....351
r318
ent322
6
20
t327
nt321
ater326
xle304
09
t316
312
306
em)
ession222
22
nt223
4
P u b l i c D o m a i n , G o o g l e - d i g i t i z e d
/ h t t p : / / w w w . h
a t h i t r u s t . o r g / a c c e s s_
u s e # p d - g o o g l e
7/27/2019 TM 9-802 GMC DUKW-353
http://slidepdf.com/reader/full/tm-9-802-gmc-dukw-353 401/401
ON,6x6
t286
g)
wer350
351
7
em164
g378
370,376
1
36
e353
56
nt355
355
eller321
63
362
362
103
8 i t r u s t . o r g / a c c e s s_ u s e # p d - g o o g l e