Tm 9-767 40-TON TANK TRANSPORTER TRUCK, TRAILER M25

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CALMANUAL

M

P u b l i c D o m a i n ,

G o o g l e - d

i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o r g / a c c e s s_ u s e # p d - g

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CALMANUAL

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y1944

rterTruck-trailerM25,is

dguidanceofall concerned.

ARYOFWAR:,

2);1C9 (10).

FM21-6.)

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RTRUCK-TRAILERM25

ENT.

,18 October1944.

hangedas follows:

NDCONTROLSINVEHICULAR

EMITRAILER(fig.17).Backthetractor

mitrailerandhavean assistantstand

ving.Maneuvertractorso* * *

ANDBLOCKTRAILER(figs.18and19).

the semitrailer.Connect

hetractortothe emergencyair

dconnecttheserviceairconnection

nnectionofthesemitrailer.Turn

possible.Whenthe

opforanindefiniteperiod,be

ottomofeachdrivechainoil

INSTRUCTIONS.

lerM15.

ewheelis* * * replaceifneces-

ofhubandhubcap withGREASE,

mumthicknessofVlieinchonlyto

* * thebrakedram.

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B—WB

eaning

ween

hlayerof

edLubricationView—A.

VENTIVEMAINTENANCE

hootinginformationandtestb

inethe causesofsomeofthetroubl<

sed underaverageclimaticcon

tomof* * * eachpossible

escinded.

ONCHAMBERS.Checkoiltemperature

ureandcheckoil level.Deter-

,andifall coolingsurfacesofthe

moveobstructionsfrom* * *

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RTRUCK-TRAILERM25C1

GENERATINGSYSTEM.

ate.

TURNEDON.Rescinded.

M.

isesAbove105 PoundsDue

ATCOMPRESSORUNLOADERVALVES.

mum,0.015inchmaximum.

ESYSTEM.

ANDWARPED,OREXCESSIVELYSCOKKUOR

A.

ts.

rtengineand* * * normalop-

uumgagetointakemanifold;

onsperminuteandreadvacuumgage.

incorrect.

NTILATORS(fig.88).

verventilatorsrelievetheair

built upinthecoversby theaction

nder* * * ofthepiston.

MENT.

hcrankuntilNo.6 exhaust

(exhaustvalvefully closed).

1cylinder.

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LHOUSE(fig.135).Pryright

JUSTMENT.

* * thetierod.

scinded.

seded).Withthevehicleonalevel

straightaheadposition,movethe

thetiresina freerollingcon-

tgagebetweenthetires,forward

ainsbarelytouchingtheflooror

thatthepointerregisterswith

ntilthegageis backoftheaxle

uchingtheflooror groundandread

s movedinrelationtothepointer

toe-inor toe-outexisting.Since

eis calibratedininchesfortoe-in

41),is rescinded.

LALINEMENTGAGE

USTTOUCHINGTHEFLOOR

adjustment

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ERTRUCK-TRAILERM25

gwheelbutton

ONNECTIONS.

ied,* * * connectorwith

secondsispermissible.Leakageis

ARYOFWAR:

10);Dept(10); D(2);IBn

S v ( 2 ) ;Arm&SvBo a rds

Gen& SpSvSchs(10);

's"Markfor OrdO"(5);

(5);OrdRegOff (3);

(5).

9-325.

M21-6.

NGOFFICE:1944

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TINGINSTRUCTIONS

n.

s

ge

TENANCEINSTRUCTIONS

ment

stem..

ions,

al

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RTRUCK-TRAILERM25

brakeandlinkage172-174378-382

ngs,and

ers178-180393-399

ulic

1-417

426

433

7-214434-449

-451

RMAINTENANCEINSTRUCTIONS

quipment218452

53-476

40477-483

485

6486-489

eam)....247-250490-497

56498-512

DTEMPORARYSTORAGE

rage257-259513-519

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GINSTRUCTIONS

hedforthe informationand

nelchargedwiththe operationand

the40-ton,TankTransporter

ontainstechnicalinformationre-

andcareof materiel.Themanualis

ectionI throughsectionVIII,

ctions.PartTwo,sectionIXthrough

emaintenanceinstructionsforusing

esponsibilityofdoingtractormain-

ction.PartThree,sectionXXXIV

mitrailermaintenanceinstructions

r,sectionXLI,containsinstruc-

ystorage.

ftherepair,modifications,or

rfacilitiesof theunit,therespon-

nformedsothattrained personnel

tmaybeprovided,or properin-

blyReplacementRecord.

cleissuppliedwithacopyofA.G.O.

meansofkeepinga recordofeach

majorunitassemblyreplaced.This

clenameandU.S. A.Registration

dinformationpertinenttothework

ntthattheformbe usedas

hevehicleuntilthevehicleis

.Personnelperformingmodifications

entsmustrecordclearlyonthe

mpletedandmustinitial theform

achmodificationiscompleted,

age,andMWOnumber.When

gines,transmissions,transfercases,

rsand/ormileageandnomencla-

repairsandminorpartsandacces-

orded.

Uponreceiptbyathird orfourth

eformodificationorrepair,main-

MWOnumbersofmodifications

G.O.FormNo.478.

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RTRUCK-TRAILERM25

TEDDATA

Truck-trailerM25isde-

eceofdamagedmaterielandtrans-

saryrepairscanbeaccomplished.

ctortruck(M26)andsemitrailer

ledtothe tractorbymeansofa

utomaticallylocksthetrailerto

lerwheelsandlightingequipment

etractorairandlightingsystems

ercable(carriedonthe trailer).

recontrolledbythedriver ofthe

automaticallysetincasethe

ly,disconnectedfromthetractor.

-propelledmotorvehicle,

-combustiongasolineengine.There

wheelsequippedwithdesert,or

erearwheelsaredrivenbyroller

tsfastenedtothewheelhubs.The

obtainedfromtheengine,through

nsmissions,reardifferentialand

whichareboltedtothe jackshaft

afthubsprocketsandon thewheel

Thetractorcanbeused asare-

railer,sinceitisequippedwitha

emwinch,andaverticallifting

dhas hingedarmorplatecovers

s,andcabwindows.Allofthese

ominsidethe cabandhavepeep

herearend oftheframe.Towing

nd rearoftheframe.Adrawbar

ractor,for recoveryoperations.

equipmentforweldingorcut-

ancetoolsarealsocarriedonthe

nedto bepulledbythetractor

wdropframehavingalowbed-

lsequippedwithpneumatictires

whichhasamaximumpayload

ximumspeedof26milesperhour.

ngontrunnionshafts,allows any

obstaclewhileallotherwheelsremain

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A

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K-TRAILERM25

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A

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ERTRUCK-TRAILERM25

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A

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K-TRAILERM25

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TEDDATA

sonthe semitrailerwheelsare

iedfromthetrucktractor,through

hesemitrailertothetractor.There

hichareon therightandleftside

areontheright andleftfront

lackoutclearancelightswhichare

clearancelights.Twoauxiliary

Y

TRI

UMBER

R

BS

IO3.3OOLBS.

ROSSWEIGHTII6.I5OLBS.

OAD55.OOOIBS.

ONCERNED

INE7O72

W32"FOE.3O

32~FOE3O

OTHISVEHICLE

M

leftside. Twoclipsareprovided

position.A blackouttaillight,

d servicestoplight,also,ablack-

catedontherearcross memberof

ythe sameswitchesthatoperate

htandstoplights.PioneerTools,

angingtiresandformaintenance

carriedonthetrailer.

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RTRUCK-TRAILERM25

ns.

ilermodelNoM25

icCarandFoundryCo.

aufTrailerCo.

r

)103,300lb

ted)25ft4 in.

ed)10ft10 %in.

0lb

ted)11ft5 in.

n.

in-

tanegasoline

%in.

load)28mph

ration—75poundspersquareinch,

e,withoutfrontwheelsdriving:

xiliaryTransmissionLeverInSpeedObtained

frontwheelsdriving,arethesame

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TEDDATA

40ft

r80ft

ishooksandtowbar

shooksandpintle(quickrelease)

ty30%

ed2,100rpm

trampsin

trampsin

tion)10ft 4in.

ng2ft5%in.

k3 ft3in.

typesare used

n.

6,100lb

ght55,000lb

oaded)13in.

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RTRUCK-TRAILERM25

ERATION

nvehicularoperation5

TROLS.

Theairpressuregageis lo-

rtell-talelockontheinstrument

air pressureinthetwoair reser-

zeroto150in 10-pounddivisions.

er.Thelow-pressureindicator

eofthedash andgivesabuzzing

s belowasafeoperatingpressure.

roperatedbytheairpressurein the

sureindicator.

The oilpressuregageislo-

ft ofignitionswitches.Thisgage

per squareinch,oftheoil being

bytheoilpump.The oilpressure

tof oilintheengine.The dialis

0-pounddivisions.

).Theoil temperaturegageis

bovetheoil pressuregage.The

eit,oftheengineoilis registered

edfrom100°Fto320°F.

fig.8).Thewatertemperature

orneroftheinstrumentpanel,and

thetemperatureofthecoolantin

alis graduatedfrom100°Fto

herearetwofuel gages,one

strumentpanelforthe rightfuel

tecornerfortheleft fueltank.The

wmuchfuel isintheright fueltank

isinleftfuel tank.

ometerislocatedin thecenter

ersrevolutionsof theengineby

s500revolutionsperminuteofthe

m3 to24,whichindicatesrevolu-

eedometerislocatedatleft

dindicatesthe roadspeedofthe

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ERATION

alisgraduatedfromzero to60and

eare shownontheodometer.

eris locatedontheinstrument

egageandindicateswhetherornot

hebattery.Thedial isgraduated

ing)onleftside ofdialandcharge

dial.Thegraduationsarein

00.

ke pedalislocatedinthe

htofthe steeringcolumnand

ontherearwheelsof thetractor.

rwith airhoseconnected,the

obeapplied.

ver(AA,fig.8).The semi-

atedinthecenterof thesteering

el.Thisleverappliesthewheel

,fig. 8).Therightairbrake

tsideofthesteering columnbeneath

ppliesthebrakeson therightrear

effectonsemitrailerwheelbrakes.

J,fig.8). Theleftairbrake

ideofthesteering columnbeneath

ppliesthebrakeson theleftrear

effectonsemitrailerwheelbrakes.

N,fig.8).Thepropeller shaft

fthedriverand isusedtoapply

propellershaftatthefrontof

r.

lutchpedalis locatedinthe

ingcolumnandisusedto dis-

tchinorder totransmitpowerto

Theacceleratorpedalislocated

hebrakepedal andisusedto

sperminuteforincreasingengine

r operationofthewinches.

Thehandthrottleleveris

ornerofthedrivingcompartment

andwithinreachofthe driver's

toasector,andis usedforsetting

eata definiteratefortraveling

ryoperations.

AD,fig.8).Thefueltank

erightof driver'sseatjustback

henfuel inonetankisexhausted,

elin oppositetanktobeused.

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K-TRAILERM25

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OPERATION

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RTRUCK-TRAILERM25

keleveris locatedonthesame

andisusedto regulatetherichness

coldengine.

ig.8).Thetachometertell-tale

heoil pressuregageontheinstru-

ered handofthetachometer,

sperminuteat whichenginehas

hereare twoignitionswitches

f theinstrumentpanelandtothe

M

FTOFRADIATOR

CORNEROFENGINEBLOCK

WATERPUMPCONNECTION

EDFORANYLENGTH

EDTHAN2IOOR-P.M.

SPEEDRECORDER

L,THEENGINE

GED

ONISAN

CTORTRUCK

OUGHTTO

OSSOF

ERMINED

ab

ginehasdualignition(twospark

ightignitionswitchcontrolsthe

heengine,andthe leftignition

ofengine.

starterswitchisapush type

ornerof theinstrumentpaneland

ne.

ight switchisapush-pulltype

panelabovethetwoignition

eheadlights,oneservicetailand

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ERATION

ights,twoblackoutmarkerlights,

d twoblackoutclearancelights

ntrolsfour serviceclearancelights,

ailandstop light,andoneblackout

iler(fig.10).The semitrailerwiring

thesemitrailerand tractorand

ailermustbe oneitherblackout

hefloodlightswitchis apush-

entpanelbetweentheoil tem-

This switchisusedtooperate

heoutsiderear endofcab..These

chesonthemforsingularoperation.

)

rLightSwitch

h(U,fig.8).Theblackout

ullswitchlocatedattherightside

nstrumentpaneland.controlsthe

frontsideofthetractor.

K,fig.8).Theheadlightdimmer

theflooratthe leftoftheclutch

ight beamsofthetwoheadlights

iren switchisapush-button

derside oftheinstrumentpanel

mountedontheleftfrontside of

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RTRUCK-TRAILERM25

Thesirenlightswitchis a

htside oftheinstrumentpanel,

ntrolstheflashingsirenlight.

h(AS,fig.8).Theinstrument

switchlocatedontheleftvertical

controlsthreeinstrumentpanel

L,fig.8).Thewindshieldwiper

edonbothwindshieldwipersfor

windshieldwiper.

nelandBlackoutSwitch

er(Y,fig.8).The maintrans-

thedrivingcompartmentatthe

unctionwiththeclutchpedalwhen

mission.

Lever(X,fig.8).Theauxiliary

din drivingcompartmenttothe

ofthemaintransmissionshiftlever.

ytransmissiongears.

B,fig.8).Thefrontaxlede-

vingcompartmentatthedriver's

ansmissionshift lever.Itisused

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ERATION

henadditionaltractionandpower

Take-offLever(fig.30).The

-offcontrolleverislocatedonthe

isused tooperatethefrontwinch.

nchistoassistthe tractoringetting

aretwoair valvesontherearof

er airconnectionsatthefront

mber.Thesevalvesmust beturned

edtothetractorandsemitrailer.

COUPLERSKINGPINEMERGENCYAIRLINE

cketandAirHoseCouplings

d(fig.3).There aretwoarmor

satthe frontofcabwhichareused

ombat.Theseshieldsare hinged

intheirnormal,openpositionby

orof thecabfrontend.Theshields

yalockingdevicewhichpreventsthe

losed.Latchboltsaresecuredtothe

mtheselatchboltsis achainwhich

bovethewindshield.Ontheend of

sareanintegralpartofthe shields.

fig.3).Thereare twoarmor

anddirectlyin frontoftheradiator

eir outeredgetothecab sothat

doorisconnectedbylinkageto the

theleftsideofthe commander'sseat

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RTRUCK-TRAILERM25

ed duringcombattoprotectthe

extremelycoldweathertoassist

emperaturetonormal.

PlateShields(figs. 3and4).

op-typearmorplateshieldsatthe

ixarmorplate shieldsfromthecab

,and therearofthecab.These

tothecabrearand sidewalls.Each

hbolt.

GHTBRACKET

SEVALVEBUTTON

eleaseValve

(fig.11).Thesemitrailerblack-

ofthetrailer secondcrossmember.

hetractorandtrailer isconnected,

herblackoutorstandarddriving

ontheswitchis in(blackoutor

Sockets(fig.12).Ajumper

e centerofthefrontcrossmember

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ERATION

ofthesemitrailerjumper cableto

emitrailer.Thetractorlightsocket

eframe.

g.12).Thesemitrailerjumper

mitrailerlightsocketstoprovide

ler.

ose(fig.12).Thetwosemi-

ctthetwoaircouplingsmountedon

ryClearanceLights

mitrailertothetwoaircouplings

orframe.Theseairconnectinghose

e semitrailerairsystem.

ftingDevice(figs.24and

ofthesemitrailermaybenarrowed

raileron aflatcar;todrive the

orfor passingthroughnarrowtun-

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RTRUCK-TRAILERM25

dthiscontrolledbytherockerbeam

tweenthereartires onboththe

ailerframe.

ve(fig.13).Thesemitrailer

atedvalvelocatedaheadofthe front

iler.Thepurposeof thisvalveisto

asethe semitrailerbrakesincase

er onthetractorfailsto function,

tAxle,FrontWinchandParking

ructionPlate

tobemovedwhenthetractor isdis-

hesemitrailerbrakesareautomatic-

isconnectedfromthesemitrailer.

nceLights(fig.14).Thereare

riedatthefrontof thesemitrailer

are installedinholdersonboth

thefrontwheels.Ajumpercableis

rinstallinginto thelightsocket

seHandle.Thefifthwheel

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ERATION

ifthwheelwhichismountedonthe

thishandleisto enabletheoper-

hatlockthetractorandsemitrailer

NDCONTROLSINVEHICULAR

formtheserviceinparagraph25

ne.

ypulling backonbrakehand

andmaintransmissionshifting

fig.15).

winchcontrollevers areintheir

thatfrontaxledeclutchleverisalso

utone-thirdofthewayforward

rupwardaboutthree-quartersof

eheatorcold seesectionV,para-

estotheir"ON"position(fig.8).

pressurebuzzerwillstart tosound

sbelow60pounds.

it indepresspositionuntil

aseimmediatelywhenengine

tertwoorthree trials,releasestarter

readthegagesandinstruments.

ot lessthan40pounds;andif it

telyandinvestigate.Theair pressure

0pounds:however,iflowpressure

waita fewmomentsforairpressure

oesnot,shutofftheengineand

readonthechargeside;tachometer

ionsperminute;the watertempera-

140°Fto160°F.Theoil temperature

oabout110°Fto130°F;the fuel

wmovementuntillever isall

sanyunevenoperationof the

larfiringinvestigatethecause.Ifair

least60poundsin aboutthree

catorbuzzerceasessounding,stop

se.

hecontrolstobemoved,in-

d,arethe samewhetherthetractor

er,are tobeoperated.

HOUTSEMITRAILERINMOTION.

shclutchpedal downandshift

ntofirstgear.Gearshiftmust be

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RTRUCK-TRAILERM25

s possible,withoutthrowingany

echanismwhentheclutchisen-

d-brakeleversoasto releasethe

thewayforward.Depressacceler-

theengine'srevolutionsperminute

vetheload.Releaseclutchpedal

pressingtheacceleratorpedal.This

easthe tractorstartstogather

theredmomentumandenginespeed

nuteontachometer,releasetheaccel-

hpedalsimultaneously.Thenmove

onddirectly(fig.15). Releaseclutch

atorpedal.Pickupfurthermomen-

etachometerreadsabout1,800

Thetractormustgainmomentum

herearwheelsmustnot bechurn-

ofthevehicledecideswhengearshift

rminuteof theengine.Repeatthe

thehighestgear ratio,thattheen-

.The12 forwardspeedsareshown

etractorwillnotmoveif the

esh.

ubleClutching).Shiftgearsto

eginstolabororthe vehiclebeginsto

hiftedtoa lowerratioifthe mo-

to wherethetachometerreads1,300

dgethe necessityofashiftbythe

omentummustbeoffirstimportance.

bleclutchmethod.Disengagethe

landsimultaneouslyreleasingthe

ftlever(fig.15)toits neutralposition,

leratorpedalatthesame time.

esired gearshiftSReed,areaboutthe

theclutchandshifttothedesired

iftthetransmissionintogearuntil

izedwiththe enginerevolutionsper

handdepresstheacceleratorpedal

fthe vehicle.

rallyadvisabletogodownhill

dbeusedto ascendthesamehill.The

ncontrollingtheengine speedwhen

escendingthehill. Theenginemust

00rpm)at thistime.Usetheair

ull control.CAUTION:Nevershift

isengagetheclutch,andcoastdown-

ine.Donotmakeexcessiveuseof the

f airpressureandmeancomplete

hiclemustbe broughttoacom-

everseisattained.Disengageclutch

rshiftleverinreverse(fig. 15).En-

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ERATION

depresstheacceleratortoattainan

engine fromstalling.Shiftauxiliary

ct,orthirdO.D.for whateverreverse

r disengagethefrontaxle,itis

eclutchleverintoits "engaged"or

hiftingofthisleverwill befacilitated

.Theshiftingmaybemade atany

ttheleverwhenthetractoris in

the frontaxleiftherear wheelsare

dbeusedfor off-the-roadoperation.

henoperatingthevehicleondry,

lateLatch

ATESHIELDS.

b(fig. 16).Inorderto close

tisnecessarytoremovethethumb-

dthe windshieldassemblyinplace,

laceinthe windshieldracksinthe

artments.Securethewindshieldin

dretainingclipswhichholdthe

ughthewindshieldopeningin the

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RTRUCK-TRAILERM25

E

WHEELJAWS

Semitrailer

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ERATION

easebuttonofthelatchwhichholds

portrod,andlift theshieldup,and

oppositeshield.Pushrods up

morplateshieldstoslamshut,

cabbymeansofthelatchbolts.

Cab.Tounlatchtheshields

ushtheshieldup. Pushthesupport

portrod,makingsurethe lockbutton

osetheshieldswith thewindshieldin

ecab.If thisisdone,theshield

eyeletattheendof thechain

tchbolt.

NECTION

toSemitrailerBeforeCoupling

Pullingbackwardontheradi-

mmander'sseat,closestheradiator

ard,opensthedoors.

rPlateShields.Reachthrough

eldup,andslamit shut,sothatthe

ce.Tounlatchtheshieldpull down-

heshieldoutwardanddown.

r.

EMITRAILER(fig.17).Backthe

thesemitrailerandhaveanassistant

thedriving.Maneuvertractorsothat

inlinewiththe fifthwheeljaws;and

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K-TRAILERM25

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RTRUCK-TRAILERM25

torideontothefifth wheel,stop

ANDBLOCKSEMITRAILER(figs.18

ngsfromthesemitrailerairconnec-

erandattachtheairhosewhichis a

mitrailer.Connecttheemergencyair

ceairconnectiononthesemitrailer,

ctionofthetractorto theemergency

Turnthehandleof thetractorair

deoftractor.Theseairvalvesare

arcrossmemberofthetractor

elsofSemitrailer

hroughtwohandholesonthe

echockblocksfromtherear

ckthefront andrearofthefour

20). Atthedriver'sseatin the

erbrake handcontrolinorderto

noffthetwo airvalvesattherear

isframebypulling thehandles,then

se.

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RTRUCK-TRAILERM25

MITRAILER.Coverthefifthwheel

h greaseandbackthetractortothe

ettledinthefifthwheeljaws.CAU-

belockedfirmlyaround theking-

tthereleasehandleis inwardtoward

ndlepin allthewayin.To testif

tractorand trypullingthesemi-

ghasbeencorrectlymade,movement

melydifficult.Attachjumperwiring

ORTFORSUPPORTLEG

LegsinDownPosition

ailerequipmenttothesemitrailer

thetractorandtothe jumpercable

enagainattachthe airhoseasin-

connectionpasstheairhoseback-

ailof thetractor.

PPORTSANDTRAILSKIDS(fig.22).

legsand theprocedureforraising

omundersupport legsandstowbase

rpinfrommainpin atbaseofstrut

avitypinfrommountingbracket

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ERTAION

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RTRUCK-TRAILERM25

aisestruttoits carryingpositionin

utintodesired bracketwithgravity

eg assemblytoitscarryingposition

terpin.Removechockblockssemi-

earcompartmentofsemitiailer.Raise

ngskidstotankbeingloaded.The

gwith thetank(fig.23).

erinMotion.NOTE:Make

rcablebetweenthesemitrailer

socketisconnected.Also,thatthe

risturnedto eithertheblackout

useofa smallscrewdriver.The

uringLoadingofSemitrailer

sition.Itmustbeturned touse

elight switchontheinstrument

mitrailerblackoutlights simul-

utlights.Whenthesemitrailer

ive lightposition,boththe

sareoperatedsimultaneously.The

beturnedtothedriving lightposi-

f boththetractorandsemitrailer

are applied.

RYCLEARANCELIGHTS(fig.14).There

carriedatthefront ofthesemi-

elights areinstalledinholderson

hefrontwheels.Thejumpercable

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ERATION

for installingintothelightsocket

re adjustabletotwopositions

position byspringclips.

drivingthetractorand semi-

ractoralone.Theover-alllength

heweight,and whetherthesemi-

rnersallowforthefact thatthe

turningradius ofthetractor.This

runitbeinghingedin themiddle.

etractorwithsemitrailer,the

ppositedirectiontothedirection

r.Whenstopping,iftheterrainper-

railerbrakesmustbe applied

rakepedalonthe tractor.The

edfor stopping.Whenbringingthe

keepthetiresjustshort ofthe

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RTRUCK-TRAILERM25

withsemitraileris tobeparked,

enduponthemto holdthevehicle,

drear ofthesemitrailerrear

BEAMSHIFTINGDEVICE.Tonarrow

semitrailerproceedasfollows:

iderailextensions,thenpull

tensiontosiderail andlifttheside

4 and25).

dfromdeckofsemitrailer

ameattherear.Removejack

M


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ERATION

mpartmentofsemitrailerandremove

pdecking.Placethejackonthe

romone totwoinches.

npinchboltatshiftingbracket.

chonrockerbeamshiftingscrew

nterclockwisetomovetheunder-

kwisetomoveit out.Theunder-

inchesoneachside, therebyreduc-

et6inchesto10 feet4inches.If

nderreducedwidth,besure that

olessthan10feet 6inches,other-

oftheframe.

GBOLT

kingBolt

T.Aftertheunderconstructionhas

osition,tighten thelockingpinch

g.26).CAUTION:Whenshifting

OUT"position,turntheshift

ctionuntilstopisreached.Then

oppositedirection.Itisi very

ockbolt(fig. 26)bekepttight

ustmentisbeingmade.

draulicjack.Stowthemon

rpedalanddepressbrakepedal.

tractorandthesemitrailer.When-

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ERATION

TORLEFTSIDE.Thecontrollever

ri ghtsideofthesteering column,

sidebrakesison theleftsideof

tethebrakesonthetractoronly,

ebrakeswillproveusefulunder

re indeepsand,snow,mud,

ll causeshortpivottowardthe

ed.

s

n,applicationoftheright or

nofeachwillprevent skidding.

rain,wherethewheels,oneither

esin thesnowormud,application

illhelpmovethe tractor.

Tractor(figs.28and29).

ailerbrakesby pullingsemitrailer

,thenremovefourchockblocks

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RTRUCK-TRAILERM25

ngand placetheblocksatthe

lerrearwheels.

ANDREMOVEAIRHOSE.Closethe

rcrossmemberofthetractorframe.

cyandservice)fromsemitrailer

nections,andstowairhoseon

endsofair hosetodragonthe

rhose,and whentheyareused

veandotherparts willbeinjured.

fromSemitrailer

emovejumperlightcablefromtractor

equipmentstowagecompartment

LING.Placefourdummycouplingson

lerandtractor.

Grasplegassemblyfirmlyintheleft

heleftshoulderunderthe support

pinand removemainpin.Then

the ground.Holdthesupport

M


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ERATION

ecotterpinfromgravitypin,then

othatholes initline upwiththe

stallmainpinand cotterpin.

MSEMITRAILER.Starttheengineand

ifthwheelofthe tractor)outand

smissionsintolowanddrive the

mitrailerbecomesdisengagedfrom

rockthesemitrailerbackand

mitrailerandtractor.Thisisdue

mitrailerwereasfarapart aspos-

ngagedwhenthetractorwithsemi-

lerkingpinbindsin thejawsofthe

ndrockingactionis necessaryin

ELEASEVALVE(fig.13).Thesemi-

ysetwhenitwasuncoupledfromthe

moved,releasethebrakesand

ditin untiltheairescapes.

ainallcontrollevers arein

ullpropellershaftbrakel ever

wingfacilitieson thetractor

bracket,whiffletree,anddraw-

resecuredtotherearendof the

a sheave)andtwoshacklesare

r.

isabledtractorcanbe towed

learofthe groundbyusingthe

ecarriedonthe tractor,orthe

itrailerofanotherrecoveryunit.

sabledtrailer canbepicked

owed.

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RTRUCK-TRAILERM25

NTROLSANDOPERATION

es11

t,andtroublelamp13

7

l18

TONS.

viceinsectionVIbeforemaking

chPowerTake-offControlHandle

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NTROLSANDOPERATION

H.

mountedwinchpowertake-off

ont ofthedriver'sseat.This lever

emountedpowertake-offontheleft

toprovide powerforthefront

win, thecableonthefront

TIONS(fig.31).Thefrontmounted

ofthetrucktractorfromhisseat in

oAssistTractorinPulling Out

he frontwinchistohelp thetractor

ain wherethetractionispoor,or

werappliedto thewheelsofthe

ctive.Recoveryoperationscanalso

ontwinch.

ageclutch,thenshiftauxiliarytrans-

smissionintofirst, shiftfrontwinch

eclutchandaccelerateenginetoa

hecable,keepingittautatalltimes

ckingoffofthe coilsofcable,on

withdrawntothedesiredlength,

M


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RTRUCK-TRAILERM25

winchcontrollevertoneutral.When

oananchorof vehiclebeing

shiftfrontwinchcontrollevertolow.

epressacceleratorpedalandengage

t,easetheloadon thecablebydis-

creaseenginerevolutionsperminute

E.Gearingofthefrontmountedwinch

nchcontrolleverinlowand drum

heretrievedspeedapproachesthat

ransmissionin"FIRST",thisshift

transmissionshift.Becauseofthis

inaddedpullbyusingthe driving

omplishthis,seenext step.

TRACTORANDFRONTWINCH

RIEVINGATRACTORFROMASPOTWHERE

eclutch,shiftauxiliarytransmission

intransmissionis insecond).

pickupboththe cableloadand

ltaneously.CAUTION:Donot

dwinchafterthecablehasbeenfully

aybecomefouledonapart ofthe

.

aybeobtainedonthe front

erentgearsinthemaintransmission.

UTCHLEVER.Thefrontwinchhand

demwinchat theplatform(fig.32).

sthefrontwinchdrum tothedrum

orthedrumto payoutordrawin

m.

RUMBRAKELEVER.Thefrontwinch

don tandemwinchattheplatform.

eon thefrontwinchdrumandis

e frontdrumbyhand,orwhenthe

FTHANDLEVER(fig.32).Thefront

don tandemwinchattheplatform

ngoutordrawingin) ofthecable

e threepositionsforthisleveras

eedat whichthecableisbeing

olledbythepowertake-offcontrol

ROLLEVER(fig.33).Thepowertake-

tandemwinchoperator'slefthand

atformandfacestherearofthe

eedat whichthecable(oneither

M


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NTROLSANDOPERATION

CH

H

EDAL

M

ormandControls

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K-TRAILERM25

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NTROLSANDOPERATION

nches)isplayedout,ordrawnin.

h,low,or neutral.

RLOCKINGPIN(fig.33).The power

verand isusedtolock thepower

onin orderthatthepowertake-off

Thispinmustalwaysbeinserted

ntorrear)is notinoperation.

CHHANDLEVER(fig.32).Therear

atedat thetandemwinchplatform

unctionfor therearofthe tandem

utchhandlever.

rTandemWinchesin

KEHANDLEVER(fig.32).Therear

catedat thetandemwinchplatform


rakehandlever.

THANDLEVER(fig.32).Therear

tedatthe tandemwinchplatform,


ifthandlever.

OLPEDAL(fig.32).Engineclutch

ndemwinchplatformjustabovethe

geanddisengagetheengineclutch

lever.

VER(fig.32).Thethrottlecontrol

herear winchandcontrolsthe

neand,consequently,therevolu-

M


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K-TRAILERM25

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NTROLSANDOPERATION

ke-off.Theacceleratorpedaland

sseatinthecab performthesame

ropedrum isontheright endof

usedforanyliftingoperation

rope.Theropedrumpedalis located

inchandengagestherope drumfor

TIONS.Thefrontandrearwinchescan

her,andifthe natureandpositionof

equiresit,theverticalliftingdevice

nches.

romdriver'sseatdisengageengine

nintolow,leavingauxiliarytrans-

henengageclutch..

tandemwinchplatformremove

ageengineclutch,andshiftpower

"gear(fig.32).Shiftwinchgear-

gout)(fig. 32)positionandslowly

timeopeningthe throttlecontrol

hiftjawclutchhand leverto"OUT"

maybechangedbyshifting gears

rytransmissioncannotbeused)and

fby meansofthepowertake-off

clutchcontrolpedalmustnotbe

theclutch,andthewinchoperator

hthefoot onthepedal.Shiftingof

ndleversmustbe donerapidlyand

dgearclash.

MDRUMBYHAND.Releasewinch

ingthewinchdrum.Graspclevis

umbyhand.Thespeedof unreeling

ll.Topreventcablefrompayingout

,anapplicationofthewinchdrum

OTE:Thereversegear"IN" must

isengaged.Donot operatethe

missioninhigh gear.Installpower

owertake-offleverisshiftedinto

used.

ERLOAD.Whenpayingoutacable

ifthandleverin its"IN"position,

drawing-inposition(reverse),

ut underabrake.Donotdepend

andlevertosnuba cablethatis

mbrakemustbeappliedsimul-

ntoftheengineclutchandreleased

goftheengineclutch.

M


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RTRUCK-TRAILERM25

UMN—STEP1

NINHOISTPLACINGCHAINHOISTONI-BEAM-

Hoist

M


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RTRUCK-TRAILERM25

HoistI-beaminPlace

3).Depresstheropedrum pedal

of thetandemwinchmustnotin-

rumpedalbyoperatingthe front

sethefrontwinchdrumandthe

gearshifthandlever.Therope

hoisonthe rightsideofthe vehicle

whenthetandemfrontwinchis

stassemblyisstowedon the

na knocked-downconditionand

charecraneI-beam,trolleyhoist,

Cranesocketsor pocketsare

.Thereare fourpocketsorsockets

thetopdeckingaheadofthesemi-

the semitrailerbetweenthefront

etractor isneartheright rear

M


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NTROLSANDOPERATION

ANDTIRE

heelandTire

.Theprimarypurposeofthe crane

erwheelsandtiresof thesemi-

wheelandtirewhichis carried

deofthe tandemwinch.The

forremovingandinstallingmajor

ractorunderconstruction.The

l/2ton.

onitsendand fastenvertical

avitypin(step1,fig. 36).Place

yhoistpocket(step 2,fig.36)

letedandremovecotterpinfrom

ndof I-beam(step3,fig.36).

erflangeoftheI-beamandinstall

restoppinbyinstallingcotterpin.

is approximatelylevel,then

erticalstrutandsecurerodwith

fig.37).Recheckerectionprocedure,

he twoclevispinsandstoppin.

whichholdsI-beamtovertical

fig.37).

M


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K-TRAILERM25

M


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NTROLSANDOPERATION

TIONS.Ifthecraneandhoist istobe

r,themovingcanbemore easily

otterpin,astoppinand chain

n thatholdrodto baseofvertical

insocketwhereworkistobe

rodasinstructedabove.

ANDTIREASSEMBLY(fig.39).Attach

etongsonwheel.Tightenchain

hholdsparewheelon sparewheel

,

)

semblyoffcarrierbymeansof

tothe ground.NOTE:Exercise

and tireassembly,becauseitweighs

wardandtothe extremeend

andhavean assistantremove

d(step4,fig.37). LowertheI-beam

toppin;andwhileholding the

,pullstoppinout ofI-beam(step2,

massemblyfromthehoistsocket

M


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RTRUCK-TRAILERM25

typin whichholdsstruttoI-beam

twoassemblies.Installgravitypin

pinin holeinstrutbase and

pin inholeinI-beamand secure

componentsintheirproperstowage

hesemitrailer.

R,ANDSHACKLES,

treeiscarriedontheexteriorwall

eachedbystandingon thewinch

emitrailertruck.Thewhiffletreeis

ngTowBar atPintleHook(Vertical

ndBringTankUpto Tractor)

be usedwithorwithoutthedraw-

he cabbyaremovablelock,the

eingj arredoutofits bracket.

andturnendofhandleinward

ckoutofthewhiffletreeand

rpinfromthe pinswhichareat

enpull thepinsoutof whiffletree

bracketandoffcab.

ariscarriedonthefront ofthecab

sedfortowingpurposeswithor

wbarissecuredtothe frontofthe

rpinsthatholdthe drawbar

M


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NTROLSANDOPERATION

nthat holdsdrawbarpinand

bar.Thenremovetwocotterpins

he cabandliftthedrawbaroff

reeshacklesattachedtobrackets

fshacklepinsandcotterpins.

bracketsontherear endofthe

epinsandcotterpins. These

etreeAttachedtoRearofTractor

osesandafterthe shacklesare

ree,orboth,canbeattachedtothe

utofshacklepinsthen pull

racketsandlift offtheshackles.

attachedtothefront orthe

heshacklesandattachingthe

rawbarpinsand cottergins.The

t orrearofthe tractorinthe

M


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TROLSANDOPERATION

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K-TRAILERM25

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TROLSANDOPERATION

M


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RTRUCK-TRAILERM25

usein fieldoperationsandare

rumentpanel (fig.14).Anindi-

oodlightwhichpermitseachlight

titself.

itchintheinstrumentpanel to

theswitchbuttonin,toturn offthe

witchonthefloodlightup toturn

NKERANDSPOTLIGHT^ÔHM̂^^RAPD7703O

erandSpotlightUnits

light.

nationblinkerandspotlightislo-

theexteriorofthe roof.Thecom-

emblyconsistsofaspotlight having

frontend.The spotlightisattached

e roofofthecabandinto the

eat.Ontheendofthe armisa

htcanbeoperatedfrominsidethe

erightor theleft,andupor

attachedtotheinsideofthe cab

d thecombinationblinkerand

M


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NTROLSANDOPERATION

eroof,and attachedtothissignal

emovetheblinkerandspot-

useit withthesignalswitchand

nsteps (b),(d),and(e)which

mbnutwhichholdsblinkerand

ghtoff thearm.

DSPOTLIGHT

tionBlinkerandSpotlight

gnalswitchandwirereelis

tsideofthe cab.Pulldownonthe

isattachedtotheelectriccordon

allcombinationblinkerand

.51) andtightenthethumbnut.

eel bywalkingawayfromthe

removethehoodfromthecom-

twistinghoodslightly andpulling

lightisdesired,leavethe hoodon.

M


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RTRUCK-TRAILERM25

attachedtothespotlight

ht frontcornerofthecabroof

thearmhasbeenremovedfromthe

ebracketsoasto coverthehole

ionblinkerandspotlightcanbe

n onthecabroofby turningthe

ON"or "OFF"position.The

ignal switchcanbeoperatedby

nalswitch.

hasatoolboxjust totherearof

emsin thisboxisa troublelight

socketwhichisapartof theelec-

ontsideofthis toolbox.

torontroublelightcordintoelectric

M


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NTROLSANDOPERATION

uardfromStowagePosition

PANELSET.

nitionsetissecuredtothe rear

t,insidethecab.Thispanelsetis

of twocasesandtwopanels.The

ntpaintandare tobeusedas a

afttopreventbombing.Loosen

romcase,thenlaythe panelson

ttheywillgivetheorder ofthe

reventingactionbytheaircraft.

M


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NTROLSANDOPERATION

frontandrearendsof wheel

Carry assemblytofrontofsemi-

mblytoits positionforstowage,

utandclampingdevice.

DROPSKIDS.

einstalledonlowerdecking.

ossmemberwithpins andcotter

edinsemitrailercrossmembersto

kidsto accommodateloadingof

skidsareso constructedthatthey

mtomakeup partofsemitrailer

alpositiontheyserveas askidfor

reprovidedat bothendstoaccom-

HANDWHEEL

tchetChainFall

terkeys holdingskidsarewelded

keysfrompinsholdingdrop

r;driveoutpins. Placecrowbar

edesiredposition.Insertpinsand

ysfrompinsholdingplatform

mbers,driveout pinsandlift

calin constructionandare

side;replacementprocedurefor

M


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RTRUCK-TRAILERM25

positiononsemitrailer.Place

entwithholesinsemitrailercross

ys.

TCHETCHAINFALL.

The handratchetchainfall

ment.Itisdesignedforeitherpulling

acitytestedat50percentoverload.

ansofshortstrokesofthe ratchet

self-actuatingbrakes.

pendedinsideofhookandnoton

heratchetchainfallisexcessively

safetyvalveandslowlyopen.This

dpermitsoperatortoeaseoff or

st mechanismortothosewhomay

54)sothat marking"UP"is

ndleslot.Operatechainfall handle

oad.Turnpawlrod lever"A"

d leverseatsinhandleslot.

ction.Ifthe lowerhookisraised

stthehousing,orif thehoistis

,theloadbrakemayfreeze.Ifthis

bysettingthe pawlrodlever"A"

dle"B"witha hammerand

:Thepumpingactioninhoisting

appliedonthedownwardmove-

upwardmovementfree.Theoppo-

gthe movementofthehandle.

4).Turnthepawl rod"A"to

wheel"G"to raiseorlowerthe

n.NOTE:Usehandwheelinstead

houtload.

M


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ALCONDITIONS

anArmoredForceFieldManual

ntoperationofthisvehicleat

numberofproblemsthatdemand

vicingfrombothoperationand

roblemsarediscussedinthispara-

ethewintergradeof motor

pecifications2-103,latestrevision,

ifficulties.

Condensationofmoisturein

eintanks,drums,and containers.

illformicecrystalsthat clogfuel

e followingprecautionsareused:

moisskinoranyother typeof

ageof water.

goverasurfacegeneratesstatic

arkunlessmeansareprovidedto

contactbetweenthecontainerand

ureaneffectiveground.

hemorefuelthereisin thetank

mwhichmoisturecanbecondensed.

ethoroughlycleanandfree

hem.

ettleafterfilling ormovinga

letankfromit.

erstighttopreventsnow,ice,

entering.

rContinuedOperationBe-

edinthissubparagraphapplyonly

evail.

KIT.Someofthese vehicleswillbe

ionkits.Completeinstructionsforuse

M


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RTRUCK-TRAILERM25

RANSFERCASE(WITHORWITHOUT

T).Foroperationbelow0°F,useOE,SAE

roareimmediatelyanticipated,and

onot alreadycontainOE,SAE

ndwhilelubricantis stillwarm.

E 30.

ricatewithGONo.00(withorwith-

ARING.LubricatewithGONo.00

uipment).

ppedwithCold WeatherKit.

kcaseoilfluidforproperlubrication

enclosurewhenitis notbeing

shotandstore inawarmplace,

paulin.Aboutthreehoursbefore

potsunderthetarpaulin.A Van

owtorchandordinarykerosene

kcaseoilsmaybediluted

dingto theiravailability,with

ULL"markwiththegrade

attemperaturesfrom+32°Fto

r each5quartsofcrankcaseoil

withcapacityof28quartswill

anoildiluent.

estomix thelubricantand

thelevelofthe dilutedoilis

ntheoilgage.This levelshould

ereference.

entageoflightdiluentwillin-

hatreason,theoil levelshouldbe

eofengineoilprescribedforuse

ntheoil leveltomanufacturer's

operation.

oursormoreat operatingtem-

ssaryifit isanticipatedthatthe

otectedfor5 hoursormore.This

ngineoilprescribedforuse between

er's"FULL"mark;thenadding

thegagedescribedinstep(c)

(WithorWithoutWinteriza-

onlycompoundprescribedforuse

M


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ALCONDITIONS

icleradiators.Seeantifreezechart

thoutWinterizationKit).

KINGMOTOR.

ors,andbearings.Seethatthe

surgesofcurrentwhichoccur

egood contactbetweenbrushes

ordirthas beenleftonthe

nism.Heavygreaseordirtmaykeep

ausethem toremaininmeshafter

er willruinthecrankingmotor

connections,especiallythebat-

enthatno shortcircuitsarepresent.

unctioning.

oughly,andcleanorreplacepoints.

htlypittedpointscanpreventengine

andreplacesparkplugs,ifneces-

inefire,reducethegapto 0.013

keignitionmoreeffectiveatthe

.

areshouldbetakenthatthespark

d.

ofbatteriesdecreasessharplywith

comespracticallynilat— 40°F.Do

ebattery,whenit hasbeenchilled

untilbatteryhasbeenheated.See

harged,withthehydrometerread-

ullychargedbatterywill notfreeze

nteredeveninarcticclimates,but

ezeandrupture at5°F.Donot

avebeen exposedtosub-zero

tobe chargedimmediatelyafter-

atterynotputon charge,thelayer

eezebeforeit getsachanceto

refully.Checkforshortcircuits

sockets.

UIPMENT.Beforeeverystart,seethat

electricalequipmentarefreefrom

ecuretheair-fuelratiorequired

hebutterflyvalvetoseethat it

unctionsproperly.

M


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RTRUCK-TRAILERM25

preciabletroubleatnormal

tisfactorilyatlowtemperatures.A

ughgasolineatnormalstarting

ute,mayhaveleakyvalvesor a

romdeliveringasufficientquantity

rethiswill notproducesufficient

60revolutionsperminute.

ulb,strainers,etc.,daily.Also

movewateranddirt.

egreeF,do notuseoilin air

preventeasyflowof air.Attem-

ashscreensindry-cleaningsolvent,

mationson theaircleanerscreens

akevacuuminthecarburetorair

quiresnospecialattentionin ex-

eheavyoilbypassesthefilterand

ssingthroughthefilteras longas

ewvehicles,haveatendency

Alwayshaveablowtorchhandyto

priortomoving,or attemptingto

hiclewiththebrakereleasedwill

ecautionmustbetaken,underthese

lsorotherwisepreventmovement

.Shockresistanceofmetals,or

eatlyreducedatextremelylowtem-

onhard,frozengroundcausesstrain

crewsbreakingornutsjarringloose.

igh temperatures,givepar-

ndefficiencyofthecoolingsystem.

e,andiftemperaturesrisebeyond

gate.Watchtheoil temperature

ond300°F,stopthe engineand

RAIN.

esertcountry,frequentinspection

nsystemsmustbe made.Inspect

andcleanout anysandandgrit

ningsoftheradiatorcore,on the

Usecompressedairfrom theair

filterand airfilterseveryfour

oil fillerandairfilter openings.

M


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EMAINTENANCESERVICES

hatit is"correctlyassembled"

ctionto seewhetherornotit isin

he vehicle.

ermineifitis "secure"isusually

hand-feel,orapry-barcheckfor

ouldincludeanybrackets,lock

,orcotterpinsusedin assembly.

derstoodtomeanworn-closeto,

dlikelytoresultin afailureifnot

edinspection.

peratingcharacteristicsbeyond

ectmustbereportedattheearliest

ividualinauthority.

VICE.

ignedprimarilyasa checktosee

mperedwith,or sabotagedsincethe

formed.Variouscombatconditions

nsafeforoperationandit istheduty

herornotthevehiclesarein condi-

whichtheymaybeassigned.This

tted,evenin extremetacticalsitu-

erviceconsistsofinspecting

eproceduredescribed,andcorrect-

Uponcompletionoftheservice,

tlytothe designatedindividualin

DAMAGE.Lookforanyinjuryto

cessoriesandspecialequipment,

collision,fallingdebris,orshellfire

ecompartmentforevidenceofthese

gedengineaccessoriesordrivebelts,

s,ordisconnectedcontrollinkage.

HERS.Besurebothextinguishersare

ssecure.

ATER.Checksupplyoffuel,oil,and

ing toproperlevels.NOTE:Any

After-operationServiceshouldbe

dorreported.Duringfreezing

nisinuse,if anyappreciableaddi-

zevalueshouldbetestedby2nd

esuresparefuel,oil, andwater

d.

NDDRIVES.Examineunitssuchas

olers,generatorandregulator,crank-

mp,and aircleaners,forlooseness,

M


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RTRUCK-TRAILERM25

ltis ingoodconditionândadjusted

gerpressuredeflection.

S.Examinetruckandsemitrailer,

,and connectionsforloosenessor

nwaterfromtanksand closedrain

raircouplingsare securelycon-

areclosedand properlysupported.

L.Lookongroundundervehiclefor

roil leaks.Traceleakstotheir

P.Startengine,notinganytendency

eactionofcrankingmotor,particu-

speed,andengagesanddisengages

eration.Setthe handthrottleso

ngwarm-upproceedwithfollowing

E://oilpressureis notevidentin30

gate.

ingengine,checkoperationof

chokeasrequiredfor enginetorun

okingandoildilution.

ldregister 60to80pounds

ortypoundspressureisnormalat

veroperateenginewhenoilpres-

s.

howhighchargeforshortperiod

oresto batterycurrentusedinstart-

bove10miles perhourwithlights

andengineoiltemperatures

m-upperiodtonormaloperating

temperatureis140°Fto160°F,

:Donot movevehicleuntilcoolant

ldregister 90to100pounds.

peratesfromzeroto60 poundsplus,

ON:Donotattempttomovevehicle

shouldregisteractualengine

eenginei srunning.Redpointer

enginerevolutionsperminute

pecifiedmaximum.

erapproximateamountoffuel

vebeenfilled afteroperationwhen

NDSHIELDWIPERS.Iftacticalsitu-

operationandtone.Testwipers

ervewhetherornotbladescontact

M


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ough afullstroke.Inspectfor

ARVIEWMIRRORS.Cleanallglass

visionmirror properlyandseethat

S)ANDREFLECTORS.Cleanalltruck

greflectors,andexaminethemfor

tuationpermits,openandcloseall

pondproperly,includestopand

ANGENUTS.Inspectalltruckand

,andaxleflangenutsto seethatthey

alltruckandsemitrailertiresare

ximum)cool.Removeobjects

weenduals,andinspectfordamage.

ALKINGBEAMANDSUSPENSIONS.

ilerwalkingbeamforloosenessor

ngsag,andbrokenorshiftedleaves.

presentandsecure.Examinetruck

m,andaxlesuspensionstobesure

Includesemitrailerairbrake cylin-

acketassemblies.

KAGE.Inspectsteeringgearcaseand

mforexcessiveleaks.Seethatall

kageareingood conditionand

BUMPERS.Inspectfrontfendersand

ECTIONS.Inspectalltowingdevices

itionandsecurelymounted.Paypar-

randretractionspring.See that

properly,andifconnectedtosemi-

NDTARPAULINS.Inspecttruckcab

doorsand armoredportcovers

lyinopenor closedposition.See.

ndproperlydistributed,andthat

ingoodconditionand properly

amageorlooseattachments,andif

position,properlyblocked,and

ATORS.Makesurethetwodecon-

ecurelymounted.

UIPMENT.Besureallitemsof both

CLE"tools,andstandardand

rviceable,andproperlystowed,or

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RTRUCK-TRAILERM25

ATION.Beforevehicleisputinmotion,

umoperatingtemperature(135°F)

nddecelerate,andlistenforany

nyunsatisfactoryoperatingchar-

moke.

MITANDFORM26.Drivermusthave

on.ChecktoseethatStandard

WOMajorUnitAssemblyReplace-

No.478,vehiclemanuals,andLubri-

e,legible,andproperly stowed.

ATIONCHECK.TheDuring-operation

ruckandsemitrailerstartimme-

otionasfollows:

VICE.

in motionlistenforanyunusual

eals,orhumsthat mayindicate

sof troubleintruckcoolingsystem

e.Watchforoverheatedcom-

sorclutch,andforvapor fromfuel

of trouble.Anytimebrakesare

rned,considerthisa testandnote

formance.Watchtruckinstru-

lyanyunusualinstrumentindi-

troubleinsystemto whichinstru-

nServiceconsistsofobserving

eproceduresfollowingeachitem,

sofserioustrouble.Noticeminor

ortedatearliestopportunity,usually

DBRAKES.Testtruckandsemitrailer

eroperation.Foot-andhand-

hicleeffectivelywithnormalpres-

to oneside.Testsemitrailerbrake

ctiveoperation.Testbothrightand

ationofrespectivevalves.Foot-

eshouldbemaintainedat0.030inch.

ouldholdtruckonreasonableincline

vel.CAUTION:Whenparkingon

alwaysusechockblocksunder

houldnotgrab,chatter,orsoueal

fullven?a<*edunderload.Pedal

ravelbeforemeetingresistance.

S.Gearsshouldshiftsmoothly,oper-

meshduringoperation.

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sferunit,declutchingmechanism,

hiftsmoothly,operatewithoutun-

meshduringoperation.

NTROLS.Drivermustbeonthe alert

mance,suchaslackofusualpower,

seor vibrations,indicationsofover-

ke.Observeifenginerespondstoall

sivelylooseorbinding.

Observethereadingsofallinstru-

onforindicationofnormalfunction-

in.

register 60to80poundsat

an40 poundsatslowspeed.

withalllampsandaccessories

ateapositive(+ )chargeatoper-

batteryand regulatorunitcut-in

r reportexcessivenegative(—)

operatingtemperature,140°F

turerangeis110°F to130°F.

pressure90to 100pounds.

fromzero to60poundsplus,or

terindicatesenginerevolu-

houtunusualfluctuationornoise.

nuetoregister approximate

rshouldregistervehiclemiles

gisteraccumulatingmileage.

R.Noteanyindicationoflooseness

dering,shimmy,wheeltramp,orun-

eringboosterfunctionsproperlyto

.Beonthe alert,bothattruckand

atingcharacteristicsornoisefrom

pensionunits,thatmightindicate

latedtires.

TRAILER.Noteanynoiseorabnormal

trailer,thatmightindicateshifting

ulinsorcurtains,looseordamaged

hicleload,specialsemitrailerequip-

nts.

edasminimummaintenance

medunderalltacticalconditions,

ntenanceservicesmustbeslighted,

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RTRUCK-TRAILERM25

nsistsofinvestigatinganydefi-

inspectingitemslistedbelowaccord-

eitems,and correctinganydefi-

correctedshouldbereportedpromptly

thority.

WATER.Checkthefuel,engineoil,

sadequatetooperatethe vehicle

pressurecapcautiously.Donot

scaped.Whenrefueling,usesafety

electricity.Gastankfiller-capvent

apvalvemustbefree,and caps

sufficientspaceinfueltankand

shot, fillradiatorslowlywhile

S:HUBS,BRAKEDRUMS,TRANSFER,

S.Placehandcautiouslyoneachtruck'

kedrumto seeifitis abnormally

ansmissions,andaxlehousingsfor

antleaks.

NSFERVENTS.Wipecleanandinspect

ntsmustbekept open.

AFTS.Inspectvehicleandwinchpro-

and centerbearingsforlooseness,

emoveanyforeignmatterwound

USPENSIONS.Inspectfrontspringsand

eyarein goodconditionandsecurely

haindrivetensionis satisfactory.

enessanddamage.Seethattrunnion

n-oiltanksand linesaresecure

oileroperates.Chaindeflection

ight rearshouldbetwoinches,

veinches.Reportifadjustmentby

inesemitrailerwalkingbeamand

damage,andseethat frontsuspen-

)issecure.

AGE.Examineallsteeringcontrol

oosenessanddamage.Besure

onnected,andnotleakingexces-

onditionnotedduringoperation.

ANGENUTS.Seethatboth truckand

,andflangenutsarepresentarid

truckandsemitrailertiresfor

moveobjectslodgedintreads,car-

RAL.Lookaroundengineandon

cessivefuel,oil,orcoolantleaks.

ector reportthem.

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ANDBELTS.Examineallaccessible

sure drivebeltsareingood condi-

hfreetravel attipoffan blades.

.Ifdustyor sandyconditionshave

ervoirsfrombothcarburetorair

vedirt.Examinecrankcasebreather

serviceas necessary.Besureair

ditionand allconnectionssecure.

BUMPER.Inspectfrontmudguards

age.

ECTIONS.Inspectalltowingconnec-

surelockingdevicesare secure.

NDTARPAULINS.Examineallitems

loosenessordamage.Loadmustbe

fsemitrailertireskid guardsare

dedtankarenotscuffingsemitrailer

rlylashedwhenin use.

ckwindshieldandmirrors,and

andwarningreflectorglass,and

WEEKLYSERVICE.

icularlyimportantbecauseatthis

esto detectanydeficienciesthat

thoseheispermittedto handle.He

sof hisinspectiontothedesignated

eduleis performedthoroughly,the

againonamoment'snotice.The

wexceptions,isthen necessaryonly

ehiclesareinthesameconditionin

etionoftheAfter-operationService.

uldneverbeentirelyomittedevenin

aybereducedtothebare funda-

At-haltService,ifnecessary.

theAfter-onerationServicethe

der,anyirregularitiesnoticedduring

During-operation,andAt-halt

erviceconsistsofinspectingand

oseitemsoftheAfter-operation

risk(*) requireadditionalweekly

whichareindicatedinsubparagraph

TION.Testengineforsatisfactorv

ccelerateanddecelerateengineand

fire.Listenfor anyunusualnoise

rnor inadequatelvlubricatedparts,

mixture,orfaultyignition.Noteany

ateandcorrect,orreport,anyde-

n.

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RTRUCK-TRAILERM25

Checkallpertinentinstrumentstobe

ndcontinueto registerorindicate

owhich-theyapply.Inspectthem

gine.

WATER.Fillfueltanks.(Seeif fuel

caseoilandcoolantsupplyandadd

vel.NOTE:Do notoverfillfuel

expansion.Infreezingweather,if

iableamountofcoolant,haveanti-

icientquantityofsolutiontopro-

ng.Becarefulinremovingpressure

oveuntilsteamhas escaped,anddo

hot.Fillallsparefuel,oil, andwater

DSHIELDWIPERS.Examinehornto

ndthattherearenoleaks inair

,testhornsfor properoperationand

msandbladestosee thattheyoper-

roper contactwithwindshield

RVISIONMIRRORS.Cleanallglass

ctfor loosenessordamage.

)ANDREFLECTORS.Inspectallunits

nessor damage.Iftacticalsituation

correctoperationandsee thatall

HERS.Examineextinguishersfor

nozzlesare clean.Ifextinguishers

fill orreplacement.

TORS.Inspectforloosenessordamage

orrefillorexchange.

ftheyareclean,secure,andnot

uldbefingertight.

ofbatteries.Ifterminalcon-

eanthemthoroughly,andapply

tenterminalboltsif loose.Check

y,adddistilledorcleanwaterto

offsafety-fillvent.Batteryshould

kingelectrolyte;carriershouldbe

ndwellpainted.Tightenloose

ANDBELTS.Lookatallaccessories

neratorregulator,crankingmotor,

ndwaterpumpfor looseness,

onmustbe adjustedsothatthere

suredatthetipof blade.Investigate

nciesofaccessoryunitsordrive

M


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IRING.Inspectallignitionwiringfor

cessivegreaseormoisture.Also

gewiringandconnections,onboth

ssordamage,andbesure wiring

ainstothervehicleparts.

ANDBREATHERCAPS.Inspectboth

casebreathercapforloosenessor

sforcorrectlevelandexcessivedirt.

ratinginsandyordustyconditions,

sary.

.

damage,andleaks.

wlpluganddrainoffaccumu-

ndicatesexcessivedirt,remove

aragraph89.Cleanfuel pump

contaminationisevident,reportfor

helon.

ROLS.Examineallcontrolsfordam-

elubrication.

railertires,includingspares,

Removeobjectslodgedintreads

duals.Checkforlowpressures,

dpresenceofvalvecaps.Inflate

aximum)cold.

orotherwiseunserviceabletruck

etireswhichshowabnormalwear

positions.Apparentmechanical

bereportedforattentionby higher

USPENSIONS.Inspecttruckfront

loosenessanddamage.Lookfor

dleaves,andlooseor missingre-

unit stabilizerbeamsandwear

ndguideplates,radiusrods and

ion,correctlyassembled,andsecure.

amsandaxleassembliesincluding

asecaps,andbeammounting

ge.Besurewalking-beamshifting

on andsecurelylocked.Seethat

n,adjustedproperly,andthat lubri-

andfilled withoil.Oiltubesshould

eration.

KAGE.Inspectgearcaseandhydraulic

ks.Examinealllinkageandjoints

sivewear.Investigateanyunusual

on.

M


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RTRUCK-TRAILERM25

AFTSANDCENTERBEARINGS.In-

ljoints forlooseness,damage,and

atcompanionflangeandcenterbear-

ANSFERVENTS.

theyarepresent,clean,secure,

eventsandcleanoutoilpas-

RAL.Lookinenginecompartmentand

t,gearoil,or hydraulicoilleaks.

leflangesforexcessiveoilseepage.

correctorreportthem.

LS.Afterunitshavecooled,check

ransmission,andtransfercase.Cor-

ge offillerholetoJ 4mchbelow.

NKS.

kandsemitrailerforlooseness

onsaretight,and thatairlinesare

chafeonothervehicleparts.Drain

n cocks.

teallbrakecontrolvalvesand

mountingsandallconnectionswhere

truckandsemitrailerairline

uttononsemitrailerto besureit

BUMPER.Inspecttruckfrontmud-

anddamage.

NECTIONS.

bothtruckandsemitrailertow-

ge,andexcessivewear.Examinefifth

mitrailer,forwear ordamage,and

ratesproperlyandlockssecurely.

vicemountingandassembly

nnectingandlockingmechanismfor

ehookspringanddrawbarfor

NDTARPAULINS.Examinetruck

oseparts.Seethat doorsandport

atchsecurely.Anyloadcarried

securelystowed.Tarpaulinsor

houldbeingood conditionand

pectsemitrailerframeandplatform

ageor looseattachments.Ifsemi-

kidguardsareinplace orthattank

s.

WINCHES.

M


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s30

GuidesNos.138and138A(figs.

onmaintenanceforthe40-tontank

on orisissuedwith eachvehicle

times.Intheeventthevehicleis

ngarmshall immediatelyrequisition

dingOfficer,FortWayneOrdnance

Guidearebindingon all

reshallbenodeviationsfromthese

heGuideare fornormalopera-

ervalsunderextremeconditionssuch

ratures,prolongedperiodsofhigh

ndordust,immersionin water,or

whichmayquicklydestroythepro-

ndrequireservicingin orderto

getothemateriel.

e"Key"in accordancewith

+32°F,+32°Fto0°F,andbelow

egradesoflubricantsby main-

nofthe vehicleduringtheapproach

ularlyobservantwhenstartingthe

icationof thickenedlubricantsand

escribedforthenextlowertempera-

necessarytochangegradesoflubri-

areconsistentlyinthe nexthigher

oningoccurssoonerduetolubricants

INSTRUCTIONS.

pieceofmaterielissupplied

uatetomaintainthemateriel.Be

before andafteruse.Operatelubri-

manneras toinsureaproperdis-

cationfittings,greasecups,

eadilyidentifiableonthevehicle.

hesurroundingsurfacebeforelubri-

M


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ERTRUCK-TRAILERM25

S!e^—""^rSi—'

*~"~—•r~£«>-

^«'ir;

«ft— ^S'S-g'S^'SSi?!

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RTRUCK-TRAILERM25

OC

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RTRUCK-TRAILERM25

ase.

G

n.

AND

capacity12

AFT-CG

control

-CG

hrowoutshaft.

izedLubricationView—A

M


G o o g l e - d


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to levelof

raglink.

G

ingsandtwo

NSCG

bracketpin.

O,CG

G).Keep

GO).

emwinch

izedLubricationView—B

M


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RTRUCK-TRAILERM25

nch.

RCASE-GO

nch(CG).

nch(GO).

ODS-GO

f fillerplug.

ARING-CG

ONTROL

HAFT-CG

eachend).

tyoke.One

housing.

bothshafts

izedLubricationView—C

M


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RTRUCK-TRAILERM25

GS-WB

leanall

ndle.Re-

ackbearings

,STEERING

ierod,and

knuckle.

G

xle.

ODSCG

DJUSTER

ft(twoateach

at eachslack

usrod(three

izedLubricationView—£

M


G o o g l e - d


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ECROSS

shaft).

LUBRICATOR

CATOR

RICATORS

SIDE

ssis).Fillcup

de of

izedLubricationView—F

M


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K-TRAILERM25

M


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RTRUCK-TRAILERM25

ASTERPULLEY— FRONTDRUMROLLERS—CG

ingly.(Twofittings.)

ly.(Onefitting

emovable

erbrake

ongspoutoil

nder.(Four

ghfittinguntil

mounting

B—WB

Dry thoroughly,

eintobearing

comesout

espacein

with Vt"layer

L—OE

edwithvalve

andl ubricated

sc hub,friction

nitisequipped

easesparingly.

edLubricationView—A

M


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—CG

Applylubricant

showsat inner

hjockinupright

wly.OiKlevel

Useoil,

RAKELEVER,CAM,SLACKADJUSTERANDBEARING—CG

wipingcloth.Applylubricantthroughfittinguntil newgrease

gcamusegreasesparingly.(Twofittingsinbushings,fouron

terandbearings.)

NDS-CAM— WB

rameec-

allowoilto

nts).Work

facewith

donlywhen

ndleseveral

toshiftingrocker

initialgreasing,

nduse pressure

dLubricationView— B

M


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RTRUCK-TRAILERM25

yU,orl/2, ormoreifconditions

T,dry-cleaning,orOIL,fuel,

s.Useofgasolineisprohibitedfor

ughlybeforerelubrication.

ewheelisremoved,coatbrakeanchor

E,generalpurpose,above+32°Fand

ingconeassembliesfromhuband

Inspectbearingracesandreplace

nside ofhubandhubcap with

2toamaximumthicknessof%inch

gconesandgreaseseals.Inspectand

aringswithGREASE,generalpur-

and,kneadinglubricantintoall

rotectbearingsfromdirtand imme-

heel.Thelubricantinthebearings

nuntilthe nextserviceperiod.Do

ubricationmightleakintothebrake

miles,removepluganddrain

movefilterelementandwash.

00miles,lubricateallbrakecon-

y otherfractionalpointswithOIL,

E10+32°Fto 0°F;OIL,lubricat-

F.

AND/ORLUBRICATEDBYORDNANCE

.•

y6monthsorwhen thetrun-

ection,repairor overhaul,thebrake

brakecylinderpistonslubricated.

sfollows:

moftrunnionarm.

onrodfrombrakelever.

tboltandliftfrom brakelever.

nderand inject%ounceof

oughairlineinletopening.

ndreassemblecylinderintrun-

tioninstructionsareclosely

d,andsatisfactoryresultsarenot

theordnanceofficerresponsible

rdofseasonalchangesoflubricants

W.D.,A.G.O.FormNo.6).

M


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OWAGEONTHEVEHICLE

pareparts32

UIPMENT.

phs31and32arefor information

basisforrequisition.

lbox

Cab toolbox

x

usrod,steer-

1Cabtoolbox

1571)..1Toolbox

1-F-1028)1Toolbox

b toolbox

oz

-oz

1Cabtoolbox

evers)1Cabtoolbox

41-P-1652)5Cabtoolbox

(41-P-1977)1Cabtoolbox

-S-1101)1Cabtool box

-S-1104)1Cabtool box

1-S-1108)1Cabtool box

1-S-1110)1

oolbox

btoolbox

oolbox

n.

m.

.

M


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AGEONTHEVEHICLE

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K-TRAILERM25

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OWAGEONTHEVEHICLE

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RTRUCK-TRAILERM25

DSHIELD,WINDSHIELDCOMMANDERWINDSHIELD

WIPERSWITCH/DESKLIGHTRACK

R

atCommander'sDesk

-'m.

6-in.

W-1664)1Toolbox

1-W-878)1

-W-877)1

1Cabtoolbox

x

1-W-2343)1Cabtool box

1-W-2345)1Tool box

e1Cabtoolbox

x.

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OWAGEONTHEVEHICLE

.50MACHINEGUNCANTEENFLASHLIGHT

TANKCAPCOVER

—RearRightSide

-oz

n.

ngnut

M


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RTRUCK-TRAILERM25

—UpperRightSide

M2

767...

No.138..

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OWAGEONTHEVEHICLE

—LeftSide

t

ll

....

M2

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RTRUCK-TRAILERM25

SIGNALSWITCH

WSEAT

—RearLeftSide

M


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AGEONTHEVEHICLE

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ERTRUCK-TRAILERM25

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OWAGEONTHEVEHICLE

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AGEONTHEVEHICLE

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OWAGEONTHEVEHICLE

e—TopDecking

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OWAGIONTHEVEHICLE

GHTSTOWCHAINLOADINGSKIDCHANNEL

CKSNATCHBLOCKSREMOVABLESKID

e—LettCompartments

tcheslong1

%-in.wire

4-in.wire

x

vechain. 4Toolbox

vechain2Tool box

,set ..1Tool box

M


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RTRUCK-TRAILERM25

lerdrive

nchdrive

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OWAGEONTHEVEHICLE

type(for

type(for

40Toolbox

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RTRUCK-TRAILERM25

TENANCEINSTRUCTIONS

T

itionedvehicleisfirst re-

tis necessaryforsecondechelon

ornotthevehiclewill operatesatis-

Forthispurpose,inspectallacces:

es,tools,andequipmenttoseethat

djusted.Inaddition,theywillper-

ilesas directedinAR850-15,

raph34below.

gthecourseoftherun-in testwill

inthescopeofthemaintenance

beforethevehicleis placedin

scopeofthemaintenance

toa higherechelonforcorrection.

aturetothe attentionofthe

eethatportableextinguishersare

estanybut CO2type,momentarily

vesofCO2extinguishers.Ifthey

e damaged,reportthemforex-

ecurely.

llfueltanks.Checkenginecrank-

orcoolantas necessarytobring

expansioninfuel tanksandradiator.

ueofantifreeze,andaddas neces-

ainstfreezing.CAUTION://there

cerningengineoilincrankcase,fol-

vingthe vehicle.

forleaks,damage,securemount-

dimentbowldrainpluganddrain

bleamountofdirtorwater is

M


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T

andengineoiltemperatures

m-uptonormaloperatingrange.

ngineoil 110°Fto130°F.

rm-up,airpressure should

orshouldcutoffairfromcompressor

ncutinif pressureinlinesandreser-

Warningindicator(buzzer)should

ds.

uldindicateenginespeedin

ingpointershouldindicateand

tained.Shouldnotexceed2,200

er"FULL"iftank hasbeen

serveifenginerespondsproperlyto

ithoutexcessiveloosenessorbind-

LDWIPERS.Seethathornsandwind-

ionandsecure.Iftacticalsituation

rationand tone.Seeifwiperarms

ge andthatbladecontactsglass

MIRRORS.Cleanallbodyglassand

sanddamage.Adjustrearview

EFLECTORS.Cleanlensesandinspect

ge.Iftacticalsituationpermits,open

eiflampsrespondproperly.

undervehicle,andwithinengine

uel,oil,hydraulicfluid,andcoolant

urceandcorrector reportthem

T.ChecktoolsandOnVehicleStow-

o besureallitemsare present,and

roperlymountedor stowed.

wingprocedures(1)to(11)

thevehicle.Onvehicleswhichhave

hecourseof deliveryfromthe

on,reducethelengthof theroad

rytomakeobservationslistedbelow.

nofthevehicleat speedsapproach-

ecautionplateshouldbe avoided

DGAGES.Donotmovevehicleuntil

F.Maximumsafeoperatingtem-

ngsofammeter,tachometer,oil,

lgagestobe suretheyareindicating

owhichtheyapply.Alsoseethat

M


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RTRUCK-TRAILERM25

espeedandthatodometerregisters

D.Testserviceairbrakestoseeif

outsidepull,chatter,orsquealing.

whentreadlepressureisreleased,

edropinair pressurewhenbrakes

adleclearanceis0.030.Parking

sonableincline,withl':t ratchet

ecurelyin appliedposition.CAU-

brakesuntilshoeshavebecome

pressureexceptforanemergency

peratessmoothlywithoutgrab,

orslippage(underload)when fully

hfreetravelbeforemeetingresist-

tchpedalatanytime,and donot

hseverelyorunnecessarilyuntil

omeproperlywornin.

ANSFER.Gearshiftmechanismshould

gearsshouldoperatewithoutun-

esh.

gactionforbindingorlooseness,

side,wander,shimmy,orwheel

ndwheelaresecure.Observeif

mappearstooperateproperlyto

anyabnormalengineoperating

suchaslackofpullingpoweror

g,stalling,overheating,orexcessive

erespondsproperlytoallcontrols.

healertthroughoutroadtest for

attachments,runninggear,sus-

dicatelooseness,damage,wear,in-

flatedtires.

LEINTERVALSFORSERVICES(9)TO

KS.Withairpressureat governed

plied,stopengine.Thereshouldnot

in1minute.

slyhand-feeleachbrakedrumand

tures.Examinetransmissiontransfer

ionsof overheating,orexcessive

rvents.Transfertemperatureswill

ng,andfuel,engineoil, andcool-

withinenginecompartmentand

aks.

correctorreportany defi-

nditionofvehicletodesignatedindi-

M


G o o g l e - d


o o g l e









RTRUCK-TRAILERM25

dropinair pressure

ouldbeinvestigated

tests.

ssureshouldbe60to

enginespeed,and

idle(400revolutions

chargeforshortperiod

orestobatteriescur-

o12milesper hour

mmetershouldshow

lights andaccessories

ES.Gagesshouldshow

p;normaloperating

60°F,oiltemperature

tmovevehicleuntil

°F.

ntachometershouldin-

perminuteatany

,andremainsat,

ained,andshouldnot

nginespeed,2,200revo-

oitem2forspecifications

chat"ON"position,fuel

eamountoffuelin

sin motion,speedometer

hour,and odometer

mileage.

Wipers.Iftactical

operoperationand

andwipersto seeif

ecure.Testoperation

perbladescontactglass

fullrange withoutin-

ountings.Adjustrear

mitrailer(Braking

atter,PedalTravel,

truckandsemi-

ringroad test.

t-pedalsufficientlytostop

eandobservetheir

M


G o o g l e - d


o o g l e



TIVEMAINTENANCE

,unusualnoiseor

16-inchclearance

Applyright-and

byuseofrelative

fectiveness.

itrailerisconnected,test

useofcenterhand-

eireffectiveness.Note

atmightindicate

ingbrakewhilestopped

itholdsvehicleeffec-

reserve,andlatches

,Chatter,Crab,

\l/2inchbeforemeet-

gwhenshiftinginto

smissionentirely,

iftshouldbe made

dalisdepressednote

icatedefectiveordry

oningear,noteany

lutchis engaged,or

derload.NOTE:Never

ssthan l/tinch.

rAction,Declutch-

Noise).Withvehicle

transmissiongear

dpowertake-off,not-

sily andsnapinto

peratewithoutslipping

ration,undereither

r,Shimmy,Side

ehicleinmotion,

directionsand observe

ationofloosenessor

nder,shimmy,or

gcolumnandwheel

Observeifsteering

esproperlytoassist

er,Noise,andGov-

eratingcharacteristics

hlywithoutstalling.

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

knocksandrattlesasthe

ated,andwhileitis

ad.

R.Operatetheengineat

notingifthevehicle

eleration.Noteany

slight pingduring

nuedorheavyping

accumulationofcar-

vehicleinalowgear,slowly

oardandbyobserv-

thatthevehicle

governedspeed

servetachometerread-

exceedsthespecified

ab,Body,Wheels).

nynoisethat may

mentsmountedon

orplates,doors,wind-

ularlyforindications

semitraileriscon-

antlistenfor any

axles,suspensionunits

ckandsemitrailer

sureatgovernedmaxi-

enginestopped,

dropinpressurewithin

occursduringthis

psudsmethod.

bs,Axles,Trans-

letionofrun,feel

uckandtrailerfor

ures.Cautiouslyfeel

transmissionsand

nspectenginecom-

leforevidenceofoil,

S

Transmissions,

inspectaxles,trans-

lubricantisatproper

M


G o o g l e - d


o o g l e



TIVEMAINTENANCE

eakingat sealsor

TE:Safelevelisfrom

ottol/2inchbelow

sdue orifcondition

cordingtoLubrication

0.CAUTION:Besure

front axledeclutch-

efiller holesatthe

filled.

Accessories,Trans-

nts,Axlesand

nning,observeas

SORIES.Accelerateandde-

andlistenforanyun-

ghtindicatedamaged,

eparts,drivebelts,or

eandcorrectorreport

uringthe roadtest.

PROPELLERSHAFTSAND

LBEARINGS.Withthetrans-

ndfront drivingaxle

onstantmoderate

,andlistenforany

damaged,loose,or

observeallpropeller

ndrunout,and for

chmayindicateloose-

locate,corrector

dtest.

okforcracksorindi-

ssionleaksaround

AUTION:Cylinder

essthere isdefinite

necessary,usetorque

eadnutsinthe proper

tension.

verCasket).Adjust

essary,asindicatedby

rmance.

ropersequence(par.

heexhaustand intake

urewhenclearances

ceablevalvecover

Carrier,Record

ries:insnectfor

vityandvoltageon

orationofelectrolyte

M


G o o g l e - d


o o g l e





TIVEMAINTENANCE

yareingoodcondition,

verflowpipeis not

ditionofcoolanttosee

atedthatcoolingsys-

gis necessary,proceed-

vescoveringproper

anerneutralizesand

cts,dirt,orgrease

ndinspectfor bent

lyasuitablyshaped

tto straightenfins.

tectivevalueand

ofworksheet Form

ooseradiatormount-

clamps.

mptosee ifitis in

aking.Examineshaft

ss.Inspectfantoseeif

ladesandhubare

aminefanforhubor

oseuntiladjustment

terpumpandfanas-

Switch.Inspectgen-

ingmotorswitchto

,securelymounted,

nandsecure.Remove

pectioncoversand

estoseeiftheyare

shesare freeinbrush

gtensiontohold them

orsandifbrushcon-

rounding.

ndofgeneratorand

dair.Ifcommutators

per2/0(donotuse

esizedpieceof wood,

nkingmotormounting

e,Governor,Lines).

is ingoodcondition,

ge,and secure.Check

0.015inch.Seeif

M


G o o g l e - d


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RTRUCK-TRAILERM25

securelymounted,

linesinenginecom-

ng.

ntakeandgovernorair

dry;applyathin

dreinstallsecurely.

yafewdropsofengineoil

dkeroseneordry-

emofgovernor.

arancesat0.010inch

edrivebeltsfor evi-

sivewear,andde-

andhubstosee if

ecurelymounted.

vebeltssofanhas

s.

eeiftheyarein

bled,andsecure.Inspect

nd connectionfor

haft,Advance

dyandexternalattach-

ecure.Examineother

andirtfromcapand

eakerplatetoseeif

,andserviceably

cracksincapand

connections,andto

.See thatpointsare

0.018inchto0.024

distributorisdirty,

eaningsolvent,dry

andlubricateitsfric-

ning,removewick

eoilandreplaceafter

ointsarepitted,burned,

ree,replace.Alsore-

d,as thismaybe

usefinefileor flint

lowout filingwith

orexcessivewearin

stallrotoronshaftandtest

cefornormalrange

anism.Noteifitwill

M


G o o g l e - d


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TIVEMAINTENANCE

eleasedwithout

nspectcontrolforproper

icatecamsurfaces,breaker

bricationGuide

tofrom0.018 inchto

gnitionwiring,and

dcondition,clean,

ymounted.Inspectall

partmentinlike

skets,SeasonalSet-

age,orexhaustleaks

ofcracksorsandholes

ks.Setheatcontrolfor

manifoldassemblyand

aircleanersandtrailer

heyarein goodcon-

nected,andnotleak-

toLubricationGuide

regasketsareinplace

ctionsaretight.

breathercapisin

aking.Cleanandserv-

deinstructions,para-

nkage,andGov-

condition,correctly

d;thatcarburetordoes

udingchokeand

worn;ifchokevalve

nitsreleasedposition;

the acceleratorisfully

secureandproperly

xaminefilterstosee

curelymountedand

removefiltersediment

ndry-cleaningsolvent

uregasketsareinplace.

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

ecleanedbywashing,

nttoclean.Turn on

mptoseeif itisin

ed,andnotleaking.Re-

andwashindry-clean-

placeandserviceable

deoffuelpumpand

9,seethatpressureis

maximumatidlespeed.

Speed).Startthe

onofcrankingmotor

engagesandoperates

eandhasadequate

starts readily.Also,

etherornotoilpressure

esatisfactory.

er).Withengine

fuel,and coolingsys-

sourceand corrector

henginerunning,and

serveifignitiontiming

onotewhetheror not

mingasengineis

tospecificationsin

pectasfollows:

eatplugincenterof

itsnormalspeedby

henadjust theidle-

cuumgageindicates

selatteradjustments

illbesaved/

erunningatnormalidling

about18to21 inches

edlefluctuatingbe-

catea defectivecylin-

melylowreadingmay

or gasket.Accelerate

vacuumgageindicator

woinchesasthrottleis

atleast24inchesas

dicationofdilutedoil,

rmalrestrictionin

M


G o o g l e - d


o o g l e



TIVEMAINTENANCE

t.NOTE:Aboveread-

llbeapproximatelya

ofaltitude.

oltage,Current,and

oseeif itisin good

nnectedandclean.

rcuittesterandobserve

ator,andcut-outcon-

llowinstructionsin

companytestinstru-

operation.CAU-

nly afterregulator

gtemperature.

n,Line).Inspecttire

nktoseethatit isin

ethatcapis present

otewhetherornot

essivelyworn.Examine

ckfordamageor

ystemforproperfunc-

7.Withinflationvalve

airpressurewillbuild

alveoperatesatthat

Caps,Condition,

er).Inspectboth

:

bserveifallvalvestemsare

position,andifall

edsecurely.Donot

forcuts,bruises,breaks,

glass,nails,andstones.

chingforanysign of

,andone-sidedwear.

f tread(orother

eforneworretreaded

escausingsuchcondi-

orrected,orreported.

gular wearshouldbe

es,wornirregularly,

ositions.

ndnon-directionaltires

vehicle.Directionaltires

dso thatthe"V"of

ewedfromthefront.

eelswillordinarilybe

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

willpoint upwhen

yinflated,inspectthem

dingtoover-allcircum-

hetherornotsparetire

secure.

ngsorflangesshouldbe

flangeor lugnuts

ertiresproperlyin-

ver-allcircumference

ttires tobemounted

eywillnot havedif-

eexceedingthe^-inch

vesandbulletins.

gertireoutside.The

ldpointout andthe

ldpointin, andshould

ustbematchedprop-

oftheroadwheelsat

ys.Aconvenienttime

nanceservices.CAU-

matchingservice,do

earingservicesare

Cams,andShafts).

eralwheelbearingand

rvicesandoverlap.

myoftimeandorderly

rwheels,inspectboth

asfollows:

andirtandgreasefrom

semitrailer)keeping

inings.Examinedrums

goodcondition,

eexcessivelywornor

msandshaftsareexces-

fcamshaftsoperate

collarsareworn.

rtcapscrewsandhub

hors,Springs).

ningswithoutremoving

M


G o o g l e - d


o o g l e



TIVEMAINTENANCE

olt headsmaycontact

operation.If vehicle

mud,or loosesand,

andexamineliningfor

placed,removeall

rviceasnecessary,

adjustall removed

ctionXXVI.

emitrailershoesby

rwheels.Seethat

ghtlysecuredtobrake

ithdrums,freeofdirt

worn.Alsoseeif shoes

curedtoanchors,

dthatspringshave

properlytoreleased

ostwornpoint should

esofservicebeforebolt

fromlinings withwire

editemsto60inclusive

normethod.Ifnew

tbymajormethod

uck,andpart three,

sterssodiaphragm

proximately%inch,

.004inchto0.006inch

ods aretightand

ingdeflectionsinthe

rear,2-inchdeflection;

eflection.Besurethat

flinks.

tainers,Trunnions,

ectapplicableunits

on,securelyassembled

ricantexcessively.Be

nt andthatcups,oil

ndnotleaking;that

apsare tight,and

.

untings,Support

eCylinderCarriers).

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

ein goodcondition,

Seethatbeamshifting

nd securelylocked.

riveFlanges,and-

ows:

itrailerwheelstoseeif

ecure.

ckforloosenessofwheel

eelsandlistenfor

ngs.Inspectaround

ptersfor lubricant

.Noteiftrucksprocketdrive

excessivelyworn,and

kandsemitrailerrear

nthoroughlyin dry-

aringcupsandconesto

on:thatthemachined

oodcondition;and

nalloftherelateditems

ringsaretobere-

rdingtoinstructions

kandsemitrailerwheel

umassembliesinto

correctlyaccordingto

graph253b,for

ngs,Boots).Inspect

goodcondition.Look

eeringarms.Seeifout-

uardsareingood

bricationplugand

eif itiscontaminated.

yuniversaljointas-

cleaningsolvent.

aljoint,inspectpartsto

onandnotexcessively.

universaljointpilots,

ngesandpivotbearings.

ewlubricantwellintocon-

lit fillsallspacebe-

M


G o o g l e - d


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TIVEMAINTENANCE

ssemblesteering

yunserviceablelubri-

oreinstallallunitsin

eremovedatdisassem-

adjustment.

n.lt-..Hangers,and

goodcondition,cor-

ringclipsandbolts

hould notbeshifted

maybe anindication

deflectionofboth

telythesame.Test

earbymeansof apry

boltssecurelyanduni-

Link,Sealsand

mnandWheel).See

ion,correctlyand

d,ifsteeringgearcase

ntis atproperlevel.

narmtosee ifitis

tofi tsnormalshape.

ydraulicboosterisin

akingattankpumpor

haftnutsecurely.Also

lyandmountingnuts

b adjustingscrews

nsteeringcolumn

casemountingnuts,

icsystemaccordingto

0.

langes,AxleEnd

els,bearings,seals,

mannerasinitem52

nspectthefront wheel

emannerasdescribed

heuniversaljointend

tmaybemadecon-

yinsamemannerasde-

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

insamemannerasde-

akeshoesasdescribed

l,Vent,andAline-

eoutofline,measure

ttocenterof axle

shouldbe equal.In-

n goodconditionand

tforexcessiveend

tthoroughly.

nement,Seals,and

goodcondition,cor-

dmounted;iftheuni-

witheach otherandare

pjoint isfree,not

cated;andthatthe

slipjointdo notleak.

-joint-assemblyand

hatenginemount-

ght.Besuretocheck

rubbermountingsto

atingfrom itsmetal

loose,tightenthem

ghten.Removeoilor

.Adjustrubbermount-

dstrapsfor damage

wlandlinkagefor

mforscoring,lining

toseewhetherornot it

tween*4and5/l6inch

hat theemergency

clearancerequired.

whenparkedwithVaof

ge,ReturnSpring).

e1%inchesbefore

eeifpedalis securely

nglinkageisin good

M


G o o g l e - d


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TIVEMAINTENANCE

ivelywornatfriction

opertensiontobring

.

chpedalfreetravelis

akepedaloperates

eenthepedalroller

spectvalvesand

seness.Seethatthe

onsteeringcolumn

operatesbrakeon

tionvalveoperatesleft

railerbrakeandthat

lbrakes.Seethatall

ontrolsareinthe off

servoirsonbothtruck

ditionandsecure.Drain

mitrailerreleasevalve

button.

,Linkage).Noteif

nditionandsecurely

aksatsealsand

eandshiftmechanism

ecurely.

eals,Vent).Seethat

urelymounted;that

ntrollinkageandshaft

edandnotdamaged;

videnceoflubrication

entpassage,if

ssemblyandmount-

samemannerasin

jointand companion

eshaftcenterbearings

tion,securelymounted,

y.

y,Seals,Vent,and

mannerasin item61

M


G o o g l e - d


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TIVEMAINTENANCE

oodcondition,securely

sorhosewill notchafe

ayvalve,cleanthor-

tallsecurely.

mineexhaustpipeto

haustmanifold,that

isibleevidenceof

exhaustpipeis

pectmufflertoseeifit

ymounted.Checktail-

edtomuffler,properly

souterend.Seethat

estpoint,notclogged,

iserisnotrestricted.

cateallpointsof

ctionsinvehicleLubri-

bulletinsordirectives,

seonlycleanlubricant.

dispenserscovered,

ant.Lubricationof

nanceServiceand

"thataremarked

ymbol)shouldbe

ion"Servicewiththe

ioncupofthedistribu-

d,in somecases,

tings,flexiblelines,

ordamaged,they

Cleanholeinwhich

tallfitting,andthen

gedlubricationpas-

il lubricantisprop-

illevelin axles,trans-

l/2 inchbelowto

UTION:Donotfill

nandfiller plugs

redgasketsarein

reinstalledplugs.Do

amountof lubricant

ributor,orwater

ydriponto brakes,

cle'sappearance.

D

ontwheelson

tion,use atoe-ingage

specified;shouldbe

M


G o o g l e - d


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RTRUCK-TRAILERM25

urnwheelsfullyin

limitedbystops.In

llpartsofvehicle.

ShearPin,Cable).

re ingoodcondition,

Seethatclutchesmove

estdrumbrakes.

gwhencablesareun-

icsafetybrake.Set

astenthewinchline

ank.Startpulling the

eengine clutch;if

akeneedsadjusting.

hebank;throwout

stopor driftsmore

dsadjusting.See para-

torivetheadsor does

ismade,the lining

Theliningusedonthe

eisaspecialtype,

pose.Donotsubstitute

injuryoraccident

ftinsamemanneras

hearpinis installed.

slidefreelyon worm

ear pin.Seeif

ood condition,ade-

ttooslack.Inspect

ondition,evenly

ablechainsand hooks

winchclutchaccording

30,movingclutch

.

cablesandinspectfor

flatorrustyspots.

clothsaturatedwith

veexcessoilorkerosene

ondrums,apply a

ilinwormgearhousing

sdueor conditionof

rdingto Lubrication

lunitontruckto be

orrectlyassembled.

ngnutssecurely.In-

ces,jawandlockas-

xcessivewear.If

eanbaseplatethor-

lubricateaccordingto

M


G o o g l e - d


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TIVEMAINTENANCE

e,paragraph30.Inspect

forgoodconditionand

,WiringandCon-

wiringconnectionsto

onandsecurely'fas-

tssothat theywill

gparts.Checksemi-

hat itoperatesprop-

berapplicatorsbefore

y,Stop,andBlack-

ailerswitchesand

pand blackoutlights.

ghtbeamsproperly

toblind oncoming

mitrailerlightstosee if

ecurelymountedandif

s.

allpresent onboth

dition,clean,and

eeiftheyare ingood

Fasteners.Inspect

eyareingoodcondi-

latchproperly.

toseeiftheyare in

nted.

ass,seats,grabrails,

ntforgoodcondition

openproperlyandare

oorscanbeclosedand

Checkforcleanli-

ons.

splatforms,ramps

rs,stowagecompart-

yare ingoodcon-

ecurelymounted.

eeif theyareingood

M


G o o g l e - d


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TIVEMAINTENANCE

owagelist,paragraph

properlystowed,or

etoolswhichhavecut-

arp.Anytoolsmounted

rwhichhavebrightor

tedorotherwisetreated

n.

nguishersarein good

dfullycharged.The

-typeextinguishersby

id-typeby shaking.

mcorrosion.

t bothdecontami-

relymounted,fully

n.Inspectrefilldate

hreemonths.

iffirstaidkit isin

itemsarepresentand

cienciesimmediately.

hetruck,semitrailer

ationGuides,and

ReportForm)should

towed.

minetirechainstobe

clean(ifnotinuse),

againstrust,andprop-

SnatchBlocks).

sarein goodcondi-

Towchainsorcables

instrustwhennot in

d,checktoseethat

s.Seethat these

correctquantities;that

roperlystowed.

ckets.Inspectfor

ngs.Capsmustbeon

eted).Inspectvehicle

ModificationWork

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

denteredonW.D.,

eplacementofmajor

is service.

d test,rechecking

ve,andalsobesureto

ercase,andalldriving

tthe correctleveland

to theminimumdis-

tions.NOTE:Correct

ringfinal roadtest.

M


G o o g l e - d


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RTRUCK-TRAILERM25

ystem44

transmissions46

nts47

ndtires52

m54

hootinginformationandtests

inethe causesofsomeofthe

used underaverageclimaticcondi-

moftroublegiven undertheindi-

dbyalistof possiblecausesofthe

erminewhichoneofthe possible

leare explainedaftereachpossible

NGINE.Notifyhigherauthority.

M


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PERATIVE.Seeparagraph44.

Seeparagraph45.

art.

TEM.Removeoutletlineat fuelpump

urnenginewithcrankingmotor.

fuelis notreachingcarburetor.See

SYSTEM.Turnononeignitionswitch,

ugcontrolledby theignitionswitch

mchfrom cylinderblockandcrank

the%-inch8aP>theignitionis in-

Power.

eparagraph43.

IGH.Seef(3)below.

TMENT.Checkclearanceandadjust

Seeparagraph3forfuelspecifica-

octanefuelis beingusedandthe

isfactorily,sparkplugsofimproper

uble(par.105);otherwiseinternal

ed.Notifyhigherauthority.

Cleanfilter(par.89).

ERINCARBURETOR.Clean(par.85).

TORORMANIFOLDFLANGES.With

sperminute,apply asmallamount

manifoldflanges.Ifoilissuckedin,

higherauthority.

ONORIMPROPERVALVETIMING.If

powerwithfuelreachingthecom-

uateignitionandsufficientoilin the

ompressionorimpropervalvetiming

rauthority.

SETTING.Disconnectgovernorlink-

rsprung linkageorstuckthrottle.

tefreely,starttheengineandacceler-

per minuteisreached,thegovernor

ustgovernor(par.91).

EM(par.43).

ON.Seec(9)above.

RADJUSTMENT.Adjustcarburetor

APVENTS.Openventsorreplacecap.

M


G o o g l e - d


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RTRUCK-TRAILERM25

OSE.Tightenhoseconnectionsandif

par.99).

WORN.Ifthereisleakagearound

ump(par.99).

GED.Ifleakingis atradiatorandat

(par.101).

ONNECTIONSINTHEAMMETER,IGNI-

DISTRIBUTOR.Removeignitionwiring,

andreplacewiring.

WET,CHAFEDORWORNHIGH-

N.Cleanallhigh-tensionwiringandinspect

replaceiffound.

OTINSTALLEDACCORDINGTOENGINE

asinstructedinparagraph106.

OOWIDEORBREAKERPOINTSNOT

s(par.104).

CKED.Replacecap.

EDORBROKEN.Replacecoils.

DIRTY.Removecoils,wipeoffwith

pressedair.

WIRINGFAULTY.Ifenginerunsun-

eitheroftheignitionswitchesor in

e rightignitionswitchon,andthe

reanddeterminewhichcircuitis

rminals,corrodedterminalsand

n,andadjustsparkplugs,thenre-

If enginecontinuestorunun-

GENERATINGSYSTEM,

ate.

TTURNEDON.Turnbothignition

moreeasily ifbothswitchesarein

DORINLowSTATEOFCHARGE.Test

par.65). Rechargeorreplace

STARTINGSWITCH.Testasinstructed

OUNDCONNECTIONFAULTY.Inspect

andenginegroundstrap andif

M


G o o g l e - d


o o g l e



oodcondition,removeandclean,

ORRODEDORCONNECTIONSLOOSE.

clean,thenreplaceandtighten

KEN.Useashortpieceofwireand

switchsothattheswitchis by-

neagain.If enginewillstartwith

ONORBENDIXSPRING;STARTING

Replacecrankingmotor(par.110).

GGEAR.Removehandlecoveron

nditionofflywheelringgear.If

PERATIVEDUETOLOOSETERMINAL

LSDAMAGED.Replacecrankingmotor.

NGSYSTEM,

batteries(par.65).

FTONWHENNOTINUSE.Turn

RTINGSWITCHTEST(par.65).If

ORTEST(par.65).Iffoundtobeat

EGULATORTEST(par.65).Iffound

TEST(par.65).Iffoundto beat

STCHARGINGRATE(par.65).If

ge.

RCUITBREAKEROPEN.Replacevolt-

Iftheammeterfails toregistera

ifa dischargeisshown.Ifnodis-

wammetertemporarilytotheleads

ingisobtained,theammeteris

testwiringleadingtoammeter.

OPERATIVE.Testregulatorasinpara-

VE(par.65,Tune-up).

ONNECTIONS.Cleanandtightencon-

ORBROKEN.Inspectandtightenor

M


G o o g l e - d


o o g l e



RTRUCK-TRAILERM25

arge.

RRENTREGULATORIMPROPERLYAD-

ator.

Testbatteries(par.65).Rechargeor

TERNALLY.Testbatteriesandreplace

thEngineRunning.

ATING.Replacegenerator.

REAKERCUT-IN.Voltagetoohigh,

teryvoltageregulatorandgener-

65).

INLOOSEORBROKEN.Notifyhigher

argewithEngineStopped.

above.Regulatorcircuitbreaker

orasinstructedinTune-up

SORAMMETERBURNEDOUT.Replace

idly.

INLOOSEORBROKEN.Notifyhigher

REAKERCUT-INVOLTAGETOOLow

voltageregulator(par.65).

OSELYMOUNTEDORCOVERLOOSE.

dtightencover.

ATORFAULTY.Tightenallvoltage

eedlecontinuestofluctuate,the

nincorrectsettingofthe regulator

rushes,faultyregulatordrivechain

perwirebetweenthebatterytermi-

d"A"inthe voltageregulator.If

perwireconnected,itindicates

pointshavebeenvibrating;replace

ationcontinues,itindicatesthat

thegenerator(par.108).

RNEDOFF.Turnswitchon.

DBATTERY.Seeparagraph65.

ERMINALS.Cleanandtightenconnec-

ORSHORTCIRCUITS.Turnonmain

ellightswitch.If batteryconnections

M


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nellightwill burn,indicatingthat

tpanel.Ifli ghtscontrolledbylight

witchinitsvariouspositions,and

onsinsidethe panelandtheconduit

nelare satisfactory,someofthe

d-outfuseand replacewithnew

urnsouta secondtimeitwillindi-

atcircuitfortroubleand correct.

rolledbylightswitchdo notfunc-

afaultymainlighting switchare

ectionsorreplaceswitch.

ORLOOSEORCORRODEDTERMINALS

NED.Replaceswitch.

NSTRUMENTPANELFEEDWIRES

E.Tightenconnections.

OutContinually.

NNECTIONSLOOSEORBROKEN.Clean

acebrokengroundstraps.

LELOOSEORBROKEN.Tightenor

PROPERLYADJUSTED.Seeparagraph

ANDAUXILIARYTRANSMIS-

hten.

DEFECTIVE.Inspectmainand

geoflubricantaroundoilsealsand

rauthority.

notBeShifted.Replacethe

CannotBeShifted.Replace

Clash.

GEIMPROPERLYADJUSTED.Adjustcon-

NKAGEADJUSTMENT.Adjust(par.79).

ustclutch(par.78).

ONPARTS.Notifyhigherauthority.

ANSMISSIONPARTS.Notifyhigher

M


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RTRUCK-TRAILERM25

OPELLERSHAFTSANDUNIVERSAL

UNIVERSALJOINTS.

IVERSALJOINTORINCORRECTBEAR-

RSALJOINTCOMPANIONFLANGES.

IVERSALJOINT.Replace.

RSALJOINTCOMPANIONFLANGE.

ls.

MENT.Adjusttoe-in(par.143).

Replacetierod(par.143).

LLERSANDCUPSSCOREDORWORN.

tem(par. 54)doesnotremedy

sknucklebearingsareprobable

OFADJUSTMENT.Adjustwheelbear-

le.

RATIVE.Checklinkagetotransfercase

aceauxiliarytransmission(par.

ATIVE.Disconnectpropellershaftand

mpossibletoturn,replaceaxle

G.Adjustbrakeshoes(par.171).

OFADJUSTMENT.Adjustbearings

ADJUSTMENT.Adjust(par.187).

IT.

ng.

GHT.Adjustwheelbearings(par.

T.Adjustdrivechains.

RLYADJUSTED.Adjustradiusrods.

M


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RTRUCK-TRAILERM25

NECTIONS.Applysoapsudsatcon-

,replacetubingand fittings,or

PRESSORUNLOADERVALVE.Check

hminimumto0.015inch maximum.

S.Cleanaircleaners.

RPISTONRINGS.Replaceaircom-

SSORDISCHARGELINE.Replacedis-

ureWhenEngineis Stopped

PRESSORDISCHARGEVALVES.Re-

NSLEAKING.Replacetubingandfit-

S.Seea(2)above.

bserveatwhatpressure,registeredby

andcompressionisstopped.This

y100to105pounds.Thenwhile

n thereservoirandoperatingone

tpressure thegovernorcutsinand

essureshouldbeapproximately80

AirPressureWhenBrakesare

.Seea(2)above.

KVALVE.Replacevalve.

DERPACKINGCUP.Replacebrake

Replacevalve.

NECTIONS.Seea(3)above.

isesAbove105 PoundsDue

APHRAGMINTHECOMPRESSORCYLIN-

or.

ATCOMPRESSORUNLOADERVALVES.

mum,0.215inchmaximum.

OMGOVERNORTOCOMPRESSORUN-

aceairline.

NG.Seeb(4) above.

VERYPRESSURE.Replacebrake

GORHOSE.Replacetubingorhose.

M


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DIAPHRAGMORPISTONPACKING

ECKVALVE.Replacevalve.


Replacevalve.


XCESSIVELYORBRAKESOUTOFAD-

es(par.171)oradjustbrakes(par.

UIPMENTIMPROPERLYCONNECTED

nesfromtractorto semitrailerfor

thatthecut-outcocksintheair

enhandlesare acrossthepipe.

MAINTAINADEQUATESUPPLYOFAIR

temforleaksbyusingsoapsudsand

ompressor.

ESYSTEM,

KESHOELINING.Adjustbrake(par.

RLYADJUSTED.Adjustshoes(par.

RNEDORGLAZED.Replacebrake

NDWARPED.Notifyhigherauthority.

LINKAGEOUTOFADJUSTMENT.Adjust

BEARINGS,ANDTIRES.

Adjustbearings(par.176).

E.Tightennuts.

.Inflatetires.

TED.Inflatetires.

r.

.Innatetires.

ttoe-in.

M


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RTRUCK-TRAILERM25

allnewwheel(par.175).

bearings(par.176).

NSLOOSE(par.189).

AMBER.Notifyhigherauthority.

SORBERS.

KEN.Replace(par.179).

N.Replace(par.178).

PERATIVE.Replace(par.180).

LUBRICATION.Lubricate(par.30).

eplace(par.178).

PERATIVE.Replace(par.180).

YDRAULICSYSTEM.

ERATIVE.Removelinefrompumpto

oil. Oilshouldhavestrongflowand

,replacehydraulicpump(par. 182).

WORNANDSCORED.Removeline

foil.Oil shouldhavestrongflow

f not,replacecylinder(par.183).

OILTANK.Filltank(par.185).

katSteeringWheel.

UTOFADJUSTMENT.Notifyhigher

rauthority.

CABLOOSE.Weldcabortightencab

KETSLOOSE.Notifyhigherauthority.

ightenwiringorlineconnec-

snotoperate,replacewithnewpart.

LE.Replacecable.

M


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RIVEHEAD.Replacehead.

BROKEN.Replaceadapter.

eplacetachometer.

peratewithPropellerShaft

acepin.

Shaft.

DIRTY.Cleanandlubricatedrum

Out.

N.Notifyhigherauthority.

WORN.Notifyhigherauthority.

Clutch.

EANDCOVERAREWORN.Notify

ATSPROCKETWORN.Notifyhigher

LJOINTYOKEWORN.Replacepro-

RN.Replace(par.204).

S.

aceuniversaljointshearpin.

nDrum ShaftAreWorn.

igherauthority.

WORN.

ORN.Notifyhigherauthority.

TOOLOOSE.Servicesafetybrake(par.

RDEFECTIVE.Adjustorreplacesafety

stsafetyordragbrake.

T.Notifyhigherauthority.

ifyhigherauthority.

M


G o o g l e - d


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RTRUCK-TRAILERM25

RN.Notifyhigherauthority.

Operating.

fyhigherauthority.

haft.

DIRTY.Cleanandlubricatedrum

tifyhigherauthority.

WORN.Replacedriveshaftassembly.

SWORN.Replacedriveshaftassembly.

Inoperative.Replacetandem

HNOISYANDWILLNOTRETRIEVE

5-206).

YSTEM.

HUTOFFATTRUCK.Openshut-off

EENTRUCKANDSEMITRAILERNOT

rtainairjumperhosetaggedserviceis

ilertaggedservice.Servicelineis

RE.Checkairpressuregageontow-

below60 pounds.

Hot.

T.Givebrakeminorbrakeadjustment.

BROKENINHUB.Replacespring.

Lubricatealllinkage.

FOOTCONTROLINORPARTLYIN

cebrakecontrolleverinthereleased

htenorreplace.

ELINHOLLOWSECTIONOFWALKING

carrierandclean.

wRelease.

RE.Checkairpressureattowing

YLINDERPUSHROD.Givebrakesa

M


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RTRUCK-TRAILERM25

GBEAM,

EINITSMOUNTINGS.Tightencap

ionshaft tomountingbracket.

E.Tightenspecialnutslocatedon

LKINGBEAMBUSHING.Notifyhigher

m.

OFALINEMENT.Bentwalkingbeam.

AXLE.

.Tightennutholdingtrunnionaxleto

gherauthorityorreplacetrunnion

fwheelistightandhub bearingsare

naxleis indicated.Notifyhigher

DDRUMS.

sufficientlubricationorim-

t,lubricateandadjustwheelbear-

tsor hubbearingsoutofad-

ngwheeltohub oradjusthub

ontoBrakeLining.Over-

aged.Replacefeltretainerand

.

me.Walkingbeamisnot

n.Adjustshiftingscrew.

M


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TA,MAINTENANCE,AND

al)73

an)74

76

A.

he engineisasix-cylinder

asolineengineWithoverheadvalves

soffourmajorassemblieswhichare

,uppercrankcase,andlowercrank-

eright side.oftheengineare the

ecarburetor,generator,distributor,

pressor,andhydraulicoilpump

mp,fan,andoilcoolerare secured

gineismountedon theframeand

lesidecoversprovideaccesstoit.

place.

m240

eed:

l

s2,100Ib

mefficiency..72to87

rankcase(exhaustside)

M


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RUCK-TRAILERM25

M


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K-TRAILERM25

M


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TA,MAINTENANCEAND

NC

E

BI

G

W

O'

D

M


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K-TRAILERM25

M


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RTRUCK-TRAILERM25

metime recordvoltmeterreading.

ouldnotbegreaterthan0.25voltand

escribedin(6)below.Cleanand

ywiresonfuseblock,voltageregu-

h.

ABLECONNECTIONSTEST.Connect

atterypositiveterminalandvolt-

undonengine.Crankengineby

nHoleCover

e timerecordvoltmeterreading,

volt.Ifreadingis higher,then

nectionatbatteryterminal,also

batteryterminal.Ifengineis

buttonispressed,it indicatesa

Replaceswitch.

ITCH.Connectvoltmeterpositive-lead

rminalforcrankingmotorwire,then

iretomagneticstarterswitch

nginebypressingstarter button

rreadingwhichshouldbe not

more,thencleanandtightenall

M


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TA,MAINTENANCEAND

kingmotorconnections.Repeattest

more than0.2volt,replaceswitch.

TEST.Connectvoltmeterpositive-lead

nnectvoltmeternegative-leadwire

nal.Disconnectignitioncoiltodis-

edistributorcapandturn dis-

are closed,thenturnignition

uldnotbemorethan 0.01volt.

minalondistributorforignition

il).Avoltmeterreadingofmore

ointcontactincorrect,distributor

djustcontactpoints,andtighten

orshaftuntilbreakerpointsare

chon.Voltmeterreadingbetween

houldbeexactlythesame asbat-

ttachsynchroscopegroundleadwire

ynchroscopewiretoNo.1spark

espeed(500rpm),andif ignition

markon flywheelwillshowin

correct,retimedistributoruntil

NG.RemovesparkplugfromNo.1

ersparkplughole andcrank

starterbuttonin quick,successive

gainstfingerindicatesthatpiston

ke,thenremovedistributorcap

tilbreakerpointsjustbegin to

onholecover(fig.87)fromflywheel

elshouldbein linewithpointerand

ontimingasinstructedinnextstep.

OTE:Distributorisdrivenclock-

wsandturndistributorcounter-

stbegintoopenand thentighten

STEST.Connectahigh-tensiontester

nd.Run engineatidlespeed

rto15-mm.If sparkisweakor

estertoNo.1socketofdistributor

mmgapindicatesadefective

llsparkplugwires.If anirregular

otonalltests,then checkdistributor

dsectors.Ifa regularsparkis

eplacerotor.

ehigh-tensioncablefromcenterof

siontestercableanddistributor.

ngineat idlespeed.Opengapin

notespark.Removehigh-tension

nconnecthigh-tensiontesterdirect-

M


G o o g l e - d


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K-TRAILERM25

M


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TA,MAINTENANCEAND

attestprocedureabove.Ifspark

sioncablestest,installanewhigh-

onremaininghigh-tensioncable.

5-mrngap,then replaceignition

RATE.Disconnect"B"pluswireat

nammeterpositivewiretoterminal

ctammeternegativewiretobattery

nnectvoltmeternegativewireto

lator,thenconnectvoltmeterposi-

Connectajumperwireto"F" plus

toa groundonengine.Startthe

200revolutionsperminute,the

e55amperesat 12volts.Ifreading

voltageregulator.

EST.Disconnectbatterywireat"B"

r,thenconnectanammeterpositive

onnected.Connecttheammeter

lof regulator.Connectvoltmeter

oltageregulator,thenconnect

don engine.Donotinstalla

und.Startand runengineuntil

rature.Runengineat1,200revo-

meterresistancein untilammeter

tormustbeat atemperatureof

belessthan 14.2ormorethan

withinthisrange,replacevoltage

mentbowlandclean.Remove

n(ôftbrush).If gasketishardand

lfuelpumpconnections.Tighten

vefuelpumptotankvalvepipe,and

ttacha fuelpumppressuregage.

ressurereadingshouldbe eight

emoveandcleanthetwoaircleaners.

NGPIPEASSEMBLY.Setheatervalve

ingpipe at"C"inextremelycold

otweather.Theproper setting

nedbytryingoutthe settingson

idedforusein temperateweather.

NDGASKET.

verisattachedtothe cylinder

nisminorderto preventdirtfrom

soto preventlubricantfrombeing

M


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K-TRAILERM25

M


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TA,MAINTENANCEAND

NIFOLDSHIELD(par.93).

PIPES(par.93).

COVERVENTILATORPIPES(par.67).

COVERANDGASKET.Removerocker

asherswhichholdrockerarm

overandrockerarmcoverventi-

anddiscard.

verandGasket.

OVERANDGASKET.Installnewrocker

kerarmcoverandsecurewith

OVERVENTILATORPIPES(par.67).

IFOLDSHIELDANDHEATERVALVE

shield(par.93)and heatervalve

NTILATORS(fig.88).

verventilatorsrelievetheair

built upinthecylinderheadby

m.Theairunder pressureandthe

and pipestotheintakemanifolds

yaredrawni ntothecombustion

hepiston.

kerarmcoverventilatorpipes

nifolds,andremovepipes.Remove

alvesfromrockerarmcover,then

wsfromvalves.

trvalvecoverfromventilator

rvalvefrombody.Cleanindry-

orvalveinventilatorvalvebody.

ody,thenscrewventilatorpipe

coverventilatorvalveson

rarmcoverventilatorpipesto

folds.

MENT.

wisewithcrankuntilNo.6

position(exhaustvalvefully

knutsonbothtappetscrewson

osentappetscrews.Insert

xhausttappetscrewandexhaust

wnuntilit holdsgagefirmly,

be justpulledout.Holdingscrew

nlocknut.Followsameprocedure

orNo.1 cylinder.

M


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ERTRUCK-TRAILERM25

CREW

SPRING

AP

RONT)

ENTER)

EAR)

LINDER)

RACKET

RACKET

RACKET

AP

AP

LINDER)

LINDER)

LINDER)

ACKET

RACKET

AP

EARING

LINDER)

LINDER)

EARING

THRUST

BEARING

hafts—Disassembled

M


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TA,MAINTENANCEAND

derbyfirstclosingexhaust

edsameas forNo.1.Tappets

ngsequence:

ustvalveclosed.

ustvalveclosed.

ustvalveclosed.

RONT.

rmShaftAssembly

ustvalveclosed.

ustvalveclosed.

ustvalveclosed.

relocatedonther ockerarm

dwhichfollowsthecontourofthe

doftherockerarmis atappet

screwrestsuponthe endofthe

rns,itmovestherockerarm to

M


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RTRUCK-TRAILERM25

untof valveopeningiscontrolled

COVER(par.66).

HAFTASSEMBLY.Markeachrocker

adwithlocationofarm sothat

tionfromwhichthey werere-

dpairofnutsand lockwashers

NG

rmShaftAssembly

uds,thenremovefrontpairofnuts

rofnuts andlockwashers.Lift

lyandrockerarmshaft bearing

front)fifthpairofnutsand lock

racketstuds,thenremovefourth

emoverockerarmcentershaft

tsandlockwashersfromcamshaft

movesixthpair ofnutsandlock

rshaftassembly.

FROMSHAFTS.Liftoffrockerarm

rmsandspacingspringsoff shafts.

M


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TA,MAINTENANCEAND

ARMASSEMBLY.Removerockerarm

appetscrew.Repeatprocedure'

lies.

SHAFTANDROCKERARMS(figs.91

tappet screwlocknutsonrocker

No. 1cylinderontorearofrocker

nlypartwayin.Install spacing

ndCable

cylinderontofrontendofshaft

erfront endofshaft.Installshaft

igs.91and 92).Placerockerarm

withdowelincapfitting intohole

tudsatthis time.)Compress

msuntilit isheldbybearingbracket.

Installcapandsecurewithlock

sely.PlacecapNo.3on studsand

multaneouslycompressingthespring

alledonstuds,installlockwashers

M


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RTRUCK-TRAILERM25

.3.Tightennutson capsinthe

No.3.LeaveNo.3 capfingertight

tis installed.NOTE:Inorderto

fts,itisimportantthat centerof

nds.

ERSHAFTANDROCKERARMS(fig.92).

rearofrockershaft.Installspring

haft.Laycenter(No.4)capon

mblyonbracketswithNo.4cap

WIRERApD76,6,

ashersand nutsoverNo.4cap,

ngsboth waysfromcentersoas

t.Tightennuts,on Nos.3and4

ds.

RSHAFTANDROCKERARMS.Install

tend ofshaft,theninstallrocker

fshaft.Placeshaftinposition

bracket,fittingdowelintohole

catchesonNo.6bracket.Install

ashersandnuts,fingertight.Press

M


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TA,MAINTENANCEAND

ngspring(fig.92) andinstalllock

and7.Tightennutson No.6cap

5.(All rockerarmshaftcapnuts

unds.)

PPETADJUSTMENT.Adjusttappets

over(par.66).

NKCASEPIPE

NKCASEPIPE

dapterisfastenedtothe

ddrivesthe tachometerdrive

ordtherevolutionsperminuteof

d.

ercableassemblyfromta-

wadapterfromsprockethousing.

radapteronsprockethousing,

chometerdrivehead.

M


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RTRUCK-TRAILERM25

erassemblyismountedonthe

he fananditspurposeis to

gineoil inextremelyhotclimates.

a centraltankintheoil cooler.

rhalfoftheoil coolertank,itpasses

oresinto theupperhalfofthe

ecoreand intoareturnpipe

assisprovidedinthe oilcoolerfor

ugged.Itpermitstheoilto pass

houtcirculatingthroughthecores.

edontheoil filter.

ndlockwashersthathold

nremovetwonutsandlockwashers

o waterpumpassembly.Remove

waterpumpinletelbowas an

nletelbowgasket.Removetwocap

dcylinderheadoil drainpipeand

doilcoolerbracketscrews.Loosen

ase)atoilcoolerassembly.Remove

mboththeoil filterandoilcooler.

cooler.

lerassemblyindry-cleaning

omtopof oilcoolerbaseandflush

gapressuregun toforcesediment,

n engineandfastenwith

achsideof engine.Wirescrews

oilcooler)and fastentofilter

ildrain pipeandfastenwith

Installwaterpumpinletelbow

passelbowandwaterpumpinlet

withnutsandlockwashers.

sareof thereplaceableelement

htsideofthe engine.Theyare

castontheinsideof thecrankcase.

llmountedonacommonbase.The

ductand throughtheoilfiltersand

rorbackintotheengineoil sump.

M


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TA,MAINTENANCEAND

rcoverscrew,lockwashers,

r element,retainingspringand

Cleanoil filterbodywithdry-

mentdownoverstudandonto

BLE

Element

etainingwasheroverstudandon

springandcoverwithnewgasket

capdownagainstspringtension,

ers.Tightenscrew.

y.Disconnectoiltemperature

sconnectatoil filter,theoilfilter

touppercrankcasepipe.Remove

M


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RTRUCK-TRAILERM25

ld oilfilterassemblytoupper

mbly.Removedrainplugfromoil

udge.Cleananyremainingoil and

uregunanddry-cleaningsolvent.

bly.Installfilter assembly

thfournutsand lockwashers.

rtooilcoolerpipe,and theoil

onnectoiltemperaturegagecable

ALASSEMBLY

LY

rankcase

ONS(EXTERNAL).

connectionsconnectthemain

ralpartofthe crankcase,tothe

themechanismwhichrequiresa

PES.Removepipe(oilcoolerto upper

percrankcase.Removepipe(oil

M


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TA,MAINTENANCEAND

andoil cooler.Removeelbowfrom

ppercrankcasepipe.

E.Loosennutthatholdsoilfilter

ht sideofcrankcase,thenrepeat

oilfilter.Loosenthumbscrewand

Liftoilfilterpipe offuppercrank-

arend ofuppercrankcaseand

tfrontend ofuppercrankcase.

ADOILDRAINPIPE.Removethree

ermostatbypasselbowand then

sthatholdwater pumpinlet

ermostatbypasselbowandwater

y.Removewaterpumpinletelbow

ndlockwashersthatholdcylinder

eadandremovepipefromuppei

SCREEN

ankcase

VEHOUSINGOILPIPE.Removeair

ctaccessorydrivehousingoilpipe

accessorydrivehousing.Remove

andthenremovefitting at

GAGEFITTING.Removeflexiblehose

kcaseandremoveelbow.The

at isfastenedtotheframe.The

oaflexiblehosewhichisalsocon-

ADTOSPROCKETHOUSINGPIPE.Re-

dsprockethousingfittings.Then

dandoilpipeconnectorfrom

M


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RTRUCK-TRAILERM25

PES.Installelbowonuppercrank-

kcasepipe,theninstallpipe(oil

ndoil cooler.Installpipe(oilcooler

ndupper crankcase.

.Applywhiteleadtooil filterpipe

olein crankcase.Secureoilfilter

connectorinbossonuppercrank-

telead.Installoil filterpipeto

ADOILDRAINPIPE.Installoneendof

ppercrankcaseandsecureother

washers.Installwater pumpinlet

statbypasselbowandwaterpump

nwaterpumpinletelbowwith

nthermostatbypasselbowwith

RIVEHOUSINGOILPIPE.Installelbow

eninstall fittingataccessory

ydrivehousingoilpipetofrontof

ydrivehousing.

GAGEFITTING.Installelbowatrear

exiblehoseonelbow.Theflexible

stenedtotheframe.Theoil

xiblehose whichisalsoconnected

ADTOSPROCKETHOUSINGPIPE.In-

thousingand theninstallelbow

fastentosprockethousingand

EMBLY(OILPAN).

asecontainstheoilsumpand

otheuppercrankcasewithcap

ineoilis filteredinthelowercrank-

pumpandcirculatedthroughout

fig.97).Remove35cap

washerswhichholdlowercrankcase

embly.Removetwolowercap

oldcrankshaftfrontoilseal

loosenremainingcapscrews.

overcapscrewsandlockwashers

lhousingandthen removedust

semblyandgasket.

ppanscreen(fig.98).Remove

chholdoilsumpoil panassembly

and pangasket.Removecap

M


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TA,MAINTENANCEAND

oldoilsumppan screenclamp

moveplateandoil sumpscreen.

olventanddrywithcompressedair.

creen.Installoil sumpscreenin

umppanscreenclampplate and

ashers.

se(fig.97).Placenewgasket

kcase.Installlowercrankcaseonto

mpintakepipeintooil sealinlower

ndlockwashersthatholdlower

dtightencapscrews.Installtwo

mOilFiller

ughfrontoilseal assemblyinto

ingcapscrewsinfrontoilseal

crewsandlockwashersthathold

lldustcoveron frontofflywheel

washers,andlockwashers.

HER.

ler assemblyiscomposedof

filter element.Thetubethrough

edisinthe centerofthebodyand

sfittedaroundthistube. Afilter

M


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RTRUCK-TRAILERM25

Theoilfillerassemblyis heldinto

xtensionbya thumbscrew.

mbscrewandliftoil fillerbody

ilterfromoilfillerbody.

nfillercapandliftoutfilter hous-

LY.Pouroutalloilinoil fillerbody,

-cleaningsolventanddrywith

eoilfillergasketonbottomof oil

hoil. Installfilterandoil filter

fillerbody uptoridgein bodywith

l fillerbodyinopeningin

humbscrew.

ERVALVEPIPES.

heexhaustmanifoldismadeinthree

ideof thecylinderheadwithstuds

betweenthemanifoldandthe

foldconductsburnedgasawayfrom

heatermanifoldissecuredtothe

ds andnutsandcontainsair

nifold.Theheatervalvepipes

dto conducttheairto,andfrom,

etwointakemanifoldsaresecured

adbystuds andnuts.Theycarry

etortothe enginecombustion

hemanifoldsandthecylinderhead.

LD.Thewateroutletmanifoldis

nderheadandpipesthe heated

temtothe radiator,whereitis

n.The manifoldisattachedby

etsarebetweenthemanifoldand

etwoheatervalvepipesoverthe

ducthotairfrom theexhaust

andbacktothe exhaustmanifold.

eatermanifoldandareclamped

sketsareused.

emoveexhaustmanifoldshield

nutsandboltsthat holdmanifold

nutsand lockwashersfromthe

manifoldandremovemanifold

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TA,MAINTENANCEAND

utsandlockwashersthathold

dtotwostuds atrightrearside of

hield.Removeheatervalvepipe

tsthathold manifoldtocylinder

nifoldgasketsoff thestuds.

manifold.

.Laythethreesectionsofthe

wn,onaflatsurfaceand pushthem

ketsonmanifoldstudsin the

nmanifoldstudsandthen install

ieldontwostudsat rightrearside

lockwashersandnuts.Install

sixstuds onundersideofmanifold

OLD

utletManifold

hers.Install exhaustmanifold

ningmanifoldnuts.Connect

htwo boltsandnuts.

movevalvehousingpipeand

movefournutsandlockwashers

housingtocarburetor.Remove

ld heatermanifoldtointake

nifold.

nstallheater'manifoldonin-

urnutsand lockwashers.Install

ld governorthrottlevalvehousing

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RTRUCK-TRAILERM25

housingpipeandheater valve

moveheatermanifold(par.

verventilatorpipe(par. 67).

ipefromaircompressortoair duct

s,flatwashers,andlockwashers

derheadand removetwointake

nstalltwointakemanifolds

dandsecurewith 24nuts,flat

lpipeonair compressorandair

.Installrockerarmcoverventi-

heatermanifold(par.76e).

al.Disconnectwatertempera-

manifold,loosenhoseclamp,and

rtoair duct.Loosenhoseclamps

nection.Loosenhoseclampswhich

bypasselbowtowaterpumpinlet

eenutsandlock washerswhichhold

mostatvalvebodyandremoveelbow

bodyoffwateroutletmanifold

rmostatoutofmanifold.Remove

veeightnutsand lockwashers

outlet manifoldtointakemanifold

ifoldgaskets.

tion.Installfournewwater

manifoldsandtheninstallthermo-

allnew thermostatgasketon

hermostatvalvebodyonmani-

etandthermostatbypasselbow

enwiththreenuts andlock

ifoldonintakemanifoldsand

ers,andplainwashers.Slidehose

dthensecurehosetowater pump

clamps.Installwater temperature

ld,theninstall heatermanifold

oseconnectionandsecurewith

onnectionaircompressortoair

.

emovetwonutswhichhold

ustmanifold,'thenremovetwo

valvepipetotailpipe.Lift heater

pes outofheatermanifold.

ce.Removetwobolts,nuts,

ervalvepipeflangeto heater

ange.Drivepinfrom theheater

atervalvecontrolarmassembly.

obfromheatervalvelocking

atervalveplungerspring from

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TA,MAINTENANCEAND

razingfromheatervalvehousing

efromheatervalveshaft anddrive

ipe.Removeheatercontrolvalve

ervalvehousingpipeasfollows:

heater valvepipeandfastenwith

Installheatercontrolvalvein

hheatervalveshaft throughpipe

haft.Brazeheatervalvepipe upper

stallheaterplungerspring inheater

alvelockplunger,thenscrew

nger.Installheatervalvecontrol

heatervalvepipeflangeandsecure

hers.

Installheatervalvepipe and

ermanifold.Installheater valve

ltsand nutswhichholdheater

onutswhichholdheatervalve

d.

M


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RTRUCK-TRAILERM25

A.

chisa two-plate,dry-disk

ateplatewhichispinnedtothe

ichareusedto contacttheplate,

eonthepressureplateside. Depress-

essure ofthedrivendiskson the

enginepowerto thetransmission

forAdjustment

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madebyremovalofadjusting

gstraps.Adjustingstrapsare

pCover

opandbottomhandholecovers

s freetravelofclutchpedal(before

nchorless.

MENT(fig.537).Removetransmis-

tchpedal,therebypushingclutch

suredistancebetweenmachined

sleeve.Thisisdonebyplacing

ngeofsleeveandmeasuringfrom

dhubofring. Thisdistanceshould

M


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RTRUCK-TRAILERM25

nch.Ifmeasurementismorethan

excessivewearondisks.

AR(figs.101and102).Workthrough

chcovershavebeenremovedand

wheelring.Thisreleasespressureon

canberemovedwithpliers.Re-

efoundabove%4inch.After

ts,recheckadjustment.NOTE:

ovedeachtime,asnoportionmust

lateandclutchflywheelring.Mark

pieceof chalkassoonasshim

entremovingmorethanone shim

COTTERPIN

BLEROD

nkage—InnerEnd

beeasilymadewhenworking

sof clutchhousing.

EASEBEARINGCLEARANCE(fig.101).

utchreleasebearingtothrustface

rementmustbefrom*/&to %2

(par.79)untilmeasurementis

NTOFCLUTCH(fig.101).Aclutch

clutchadjustingshimshavebeen

djustmentbeforeclutch-driven

alwearadjustmentismadeby

.79)sothat clutchthrowout

M


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RTRUCK-TRAILERM25

d.Thisfinalwearadjustmentshould

ewclutch-drivendiskfacingis

CONTROLS.

chpedalis attachedtoaclutch

thefloorboard.Theclutchpedalis

crosstube;the handbrakeleveris

eratesinsideof theclutchpedal

movethehandbrakelever,clutch

ewiththecabonthe chassis.The

ectsthecrosstubetothe clutchcan

hadjustablerodatclutchthrow-

nd clevispin,andloosenlocknut.

eetravelof clutchpedalis%inch.

G.

chpilotbearingis aballbear-

oftheflywheelto receivetheendof

shaft.Thisbearing supportsthe

theclutchpartswith thetrans-

ing.

NRemovetransmissionassemblyas

ositionofclutchinflywheelwith

lockwasherswhichholdclutchto

ringoutof flywheel.Liftouter

ndinnerdrivendiskout offlywheel.

BEARING.Usingbearingremover,

lywheel.

BEARING.Placepilotbearingin bone

one withwoodenblock.

nnerdrivendiskagainstflywheel

rmediateplateagainstinnerdriven

Placeouterdrivendiskagainst

sideout. Insertaclutchpilotarbor

pilotofarborenterspilot beating.

dagainstflywheel,thenfastenring

ers.CAUTION:Tighteneachcap

atethetighteningsothat ringwill

N(par.131).

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NG.

chreleasebearingis located

chreleasemechanismandtheload

agingtheclutchiscarriedbythis

NRemovemaintransmission(par.

ASEYOKEANDPEDALSHAFTS.Remove

lutchreleaseyoke,thenremove

clutchhousing,thenpulllong

eyfrom shaft.

E

R

ONCOVER

sembly

RING.Removeyokefromhousingand

omelbow.Slipends ofoilpipe

pipenipple.Slide clutchrelease

gextensioncover.

ING.Pressclutchreleasebearingon

onreleasebearing extensioncover.

ngupover topofoilpipe nipple.

nelbow.

ASEYOKEANDPEDALSHAFTS.Slide

utchhousing,theninstallkeyin

M


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RTRUCK-TRAILERM25

oke.Installshortshaftthrough

ndinto yoke.Installtwocapscrews

ckcapscrewswithwire.

ofenginepowertothetrans-

mediateplate,whichispinnedtothe

nedrivendiskis oneachsideofthe

scontacttheplateto makeafric-

chandtransmission.

N(par.131).

Markpositionofclutchinflywheel,

ckwashersthathold clutchtofly-

goffflywheel.Liftouterdriven disk,

endiskout offlywheel.

Installinnerdrivendiskagainst

Placeintermediateplateagainstinner

deout.Placeouterdrivendisk

nghubsideout. Insertaclutch

dplateuntilpilotor arborenterpilot

arborandagainstflywheel,then

ndlockwashers.Tighteneachcap

e,sothatringwill fitevenlyonfly-

N(par.131).

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HAUSTSYSTEMS

ndheatervalveexhaustpipe93

A.

hefuelsystemconsistsof twofuel

hange-overvalve,afuelfilter

thefuelpump,afuelpump carbu-

vernorassembly.Fuelstoredinthe

ghfuellines throughthefueltank

randthen tothefuelpump.The

rwhereit ismixedwithairthat has

nd themixtureisthendrawninto

ginebyvacuumcausedbythe

106).Theair intakesystemconsists

whichcleantheair,andthe cleaned

uct.Theairductis anintegralpart

openingsfromitcarrytheair

ssorandthecarburetor.

xhaustsystemcarriestheburnedgas

ere.Thesystemconsistsofanexhaust

r),muffler,tailpipe(exhauststack),

alveexhaustpipe.

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K-TRAILERM25

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RTRUCK-TRAILERM25

me

me

Y

LETPIPE

d

pumpassemblyis ofthe

allyoperatedfromaneccentricon

iontobeing operatedbytheacces-

sequippedwithahand-operated

umpaninitialsupplyof fuelinto

run outoffuelor thecarburetor

son.

mbnutonbailand pullbailoff

oroughlywithdry-cleaningsolvent.

bytighteningthumbnut.

M


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HAUSTSYSTEMS

tributorcapbypryingofftwo

ftoff distributorcapassemblyand

carburetorpipe.Removedistribu-

sconnectfuelpumptocarburetor

uretorfilterplug,and pushpipe

umpto fuelfilterpipe.Remove

whichholdfuelpumpto upper

uelpump gasketoffuppercrank-

uel pumpassemblyandanew

aseandfastenwithtwocap screws

mpto fuelfilterpipe.Attachfuel

pumpandthentightencarburetor

r anddistributorcapassembly.

rneathView

afourjet, fourventuri,updraft

xwhichin turnissecuredtothe

oftheengineblock.Agovernoris

e-adjustedforagivenhigh speed.

erenginehasbeenwarmedup

,turnidleadjustingscrewclockwise

rewll/2turns.Tachometerreading

erminute.

mpandremovethrottlecontrol

controlcablefromclamp.Remove

M


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RTRUCK-TRAILERM25

ds tandemwinchthrottlecontrol

clampsandremovecarburetortoair

asherthatholdschokerod to

eonthrottlerod.Disconnectac-

fuelpumptocarburetorpipeat fuel

oldcarburetortogovernorthrottle

rdownandremove.

buretoron governorthrottle

rnuts.Connectfuelpump to

nectacceleratorrodspring.Install

pandGageCoven

rburetorandfastenwithnutsand

oairductpipe andtightenhose

ottlecontrolcableoncarburetor

ckwasher.Installthrottlecontrol

amp.

50gallons capacityeachare

softhechassisalong sideofthecab

e cabunderalid thatisapart of

ksiscarriedtothe carburetorby

hetanksareprotectedbythecab

asingle pieceofarmorplateonthe

M


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HAUSTSYSTEMS

1).

K.Liftfueltankcapcover(inside

mfueltank.Removefourscrews

cabfloorandremovecover.Remove

ellevelgagewiretofuel tankand

amptwooxygenandoneacetylene

es.Placeahydraulicjackunderfuel

portedafterbeingloosened.

111).Removedrainpluginsedi-

nfuelintoa dry,cleancontainer.

Tank

ckwashersthatholdfueltank

ont armorplate.Removeseven

holdfuel tankinsidearmorplate

emovesevenbolts,nuts,and lock

armorplatetofueltankbottom

oundby meansofhydraulicjack.

rsthatholdfuel tankstrapstofuel

ovetwofueltank straps.Remove

mundertank,then removethree

omarmorplateandfueltank and

erthe twostraps.

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UCK-TRAILERM25

M


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HAUSTSYSTEMS

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RTRUCK-TRAILERM25

tandotherimpuritiesfrom

anthoroughlywithdry-cleaning

111).

tioninsulationonbottomarmor

armorplate.Installtwofueltank

rplatewithfournutsand lock

tionwithhydraulicjackandthen

asherswhichfastenfueltankbottom

sideandrearfueltankarmor plates.

stalltwooxygenandoneacetylene

ownontobottles.Install fuellevel

nkandfastenwirewithnut andlock

veroncab floorandfastenwithtwo

ank.Fillfuel tankwithfueland

onductedfromthetwo fuel

ervalve,throughthefuelfilter,to

rburetorbymeansofpiping.All

sleeveandaconnector.Thesleeve

insideof theconnectorwhichis

ion.

eaconnectormaybe repaired,

htopermititsbeing shortened%

ofpipeand sawoffendofpipe.

CAUTION:Pipingthatiscutwith

dneverat anangle.

whenstraightened;however,if

mustbecarefullyinspectedfor

otwhereitwaskinked.

ced,butinanemergencycanbe

spectedfor leaksorobstruction

ilsorshapesmustbe filledwith

anpipeofsandwithcompressedair.

torandpullconnectorandsleeve

peatprocedureatoppositeend of

fulnotto kinkthepipeduring

firmlyintofuelsystemunit

ndinto,fuelsystemunitfitting.

unit fitting,turnconnectorinto

,andtightenconnectorwitha

nectormustbesnug.

M


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HAUSTSYSTEMS

olLinkage(InsideRadiatorDoor)

LINKAGE.

ttleandcontrollinkageis

eyokeswhichconnectthehand

celeratorpedaltothecarburetor.

sareon thequadrantontheside

eratorpedalis onthecabfloor.

rottleleverperformthesame

ratingtheenginerevolutionsper

r introducingarichfuelmixture

bers.

tbeinstalledso thatwhen

torpedal,thethrottleplate(fig.112)

llthewayforward).Adjustmentis

turningthe yoke.Thethrottleplate

torpedalisfully depressed(throttle

dtheacceleratorpedalstopmust

ningthelocknutandturning the

M


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RTRUCK-TRAILERM25

LELINKAGE.Reachingthroughradi-

mpscrewswhichholdthrottlelever

ontrolshaft andchokecontrol

veaspacerfromthrottlecontrol

movefourscrewsthatholdinner

dremovetwobrackets.Frominside

ockwashersthathold sectorto

rwith controlsoffcover.Pull

loutofsector.Removenutandlock

ll andsockettocarburetor,remove

okerodfrontballandsocketto

osenlocknutsatbothendsof

andlocknuts. Removechokerod

iator.Removenutandlockwasher

celeratorbellcrank.Removenut

rottle rodtothrottleleverand

knutsatbothendsof throttlerods

ts.

CONTROLLINKAGE.Removetwobolts,

cceleratorpedaltofloor,and

oldacceleratorrodto pedal.Push

emovetwocotterpinsand straight

emovepedal.Removeoppositeend

leverbyremovingnut andlock

moveballjointsfromrod,and then

eratorrodspring.Removenutsand

rtocarburetorrodtobell crank

knutsand removespringclipand

locknuts.Removetwobolts,nuts,

ankassemblyto dashandremove

thatholdsbellcrankleverto cross

shaftwith bellcrankoutofbell

outof bellcrankandcrossshaft

wobushingsfrombracket.

HTHROTTLECONTROL.Removecotter

nchthrottlecontrol.Loosenlock

bleclampfromthrottlecontrol

bingfromclamponwinchthen

f winchandcab.Removetubing

rburetor.Removebolt,nut,and

ntrolchaintocarburetor.Pull

lecontroltubing.NOTE:The

the throttlecontrolcable.

HTHROTTLECONTROL.Installthrottle

bing.Attachthrottlecontrolchain

nut,and lockwasher.Install

mponair ductpipetocarburetor,

mpatrearofwinch.Installcable

M


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RTRUCK-TRAILERM25

uel filterinfuelfilter clampand

washer.Connectfiltertofuel tank

ofuelpumpl inetofilter.

ERVALVE.

ge-overvalveislocatedatthe

ayvalvehavingahandle toenable

romwhichhewantsto takefuel.

hefuel tankchange-overvalve.

KETHOUSINGPIPE

NCH—41-W-871-41

lyRemoval

ctrightandleftfueltank lines

ervalve.Removescrewandlock

tankchange-overvalveandthen

Removetwobolts,nuts,andlock

nge-overvalveassemblytoshifting

mbly.

eltank change-overvalveas-

fastenwithtwobolts,nuts,and

lvestemandfastenwith screwand

eft-handfueltanklinesandfuel

nnections.

M


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HAUSTSYSTEMS

ernorassemblyismountedon

f engine.Thegovernorisofthe

ghtsoperatingonpins.Themove-

ntrolledby therevolutionsper

tofthegovernoris bymeansofa

ingagainstagovernorcontrolspring.

ngassemblyconsistsofathrottle

or.Thisvalveisoperatedbythe

hrottle valveaccordingtotheset-

f thethrottlevalveisadjustable

ottlevalveto thegovernorisnot

vernorsettingmustbeaccompanied

ttlevalve.

stmentofthegovernorsetting

ttingofthe governorthrottlevalve.

T.Removegovernoradjustingscrew

gscrewlocknut.Startengineand

inuteontachometer.Turngovernor

wheretachometerstartstoshowa

an2,100revolutionsper minute.

otstandat 2,100,adjustscrewuntil

minute governorthrottlevalveshould

stbeupagainststop leverscrew.If

nut onscrewandturnstopl ever

ewideopen.Tightennut.

STMENT.Removecarburetor(par.85),

ngassemblycanbepulleddown.

d turnscrewuntilthrottlevalveis

M


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RTRUCK-TRAILERM25

op leverscrewandwithdrawfeeler

nstall carburetor(par.85).

seclampsthatholdcarburetor

.Removecotterpinandrodendpin

togovernorcontrolrod.Remove

d lockwasher,usingacrowfoot

ningnutsandlockwashers,usinga

ssemblyandgovernorhousing

vernorassemblyintoposition,

sket.Installgovernorlowerinside

crowfootwrench,theninstallthree

usingastandardwrench.Fasten

controlarmwithrod endpinand

ductpipeandtightenhoseclamps.

.The twoaircleanersareof

dattherightfront cornerofthe

neath.Thefunctionoftheair

ddirtfromthe airbeforetheairis

ingthecleanerspassesinto oil

ndsuddenreversalofair flow,most

risthrowninto theoilinthe base

eaner.Partiallycleanedairpasses

er-meshstrainerwheretheremain-

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HAUSTSYSTEMS

ewwingnutstoloosenholding

dlift baseoffbody.Dumpalloil

iscardoil.Unscrewtwowingnuts,

movablefilter.Removesnapringthat

e.Theaircleanerbodiesandbase

intervalsfor cleaningdependupon

hicleMSoperating.(Preventive

).Cleanbothaircleanerswithdry-

mpressedair.Thisoperationshould

all dirtanddusthavebeen re-

gethatwill permitanyairtoenter

einlet.Flush permanentfilter(in-

withdry-cleaningsolventandthen

movablefilterthoroughlywithdry-

mpressedair.Theninstallremovable

enwithtwowingnuts.Fill air

gine oil,installoilbaffle,andsecure

tairlinetoair horn,remove

at holdairhornto bracketand

movefivebolts,nuts,andlockwashers

dremovepan.Loosenhoseclamps

r cleanerandpushhoseoffair

emoveleftaircleaner.Loosenhose

ghtaircleanerand pushhoseoffair

fromaircleaners.Loosentwoclamps

leaner,withinletopeningasfar

clampsthatholdaircleaner.Install

nnectiontorightair cleanerand

r cleanerandtightentwoclamps

connectionofleftaircleanerand

eanersidepan andfastenwithfive

aightenairhornand installbolt,

n tobracket;connectairlineto

R,TAILPIPE,ANDHEATER

tpipeconnectstheexhaustmani-

otheexhaustmanifoldby aflange

nd casting.

sand nutswhichholdexhaust

oveexhaustpipefrommufflerby

austpipeintomufflerandthen

austmanifoldwithfourbolts and

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RTRUCK-TRAILERM25

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HAUSTSYSTEMS

ing—UnderneathView

icalmanifoldissecuredtobrackets

ame.Burnedgasentersfromthe

Thenoiseofthe explodedgasis

the gasisallowedtoescapeout of

sand nutswhichholdtwo

cket,thenliftthe mufflerclampsoff

herearandoffthe exhaustpipe.

fflerbracketandremovethemuffler

flertowardthefrontontotheex-

on mufflerbracketandfastenby

ket.Installmufflerclampsinmuffler

on thefourbolts.

e(exhauststack)attachestothe

ndsupwardalongsideofthetandem

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RTRUCK-TRAILERM25

ductsburnedgastotheatmosphere.

rnedan exhauststackshieldsur-

xhaustStackShield.Remove

xhauststacktomufflertailpipe.

old exhauststackshieldtoshield

p.Removeexhauststackwith

hieldtopclampboltandnutand

clampboltandnut.Lift shieldoff

austStackShield.Install

ckshield topclampboltandnut,

ltandnut. Installstackandshield

racketclamparoundshieldandthen

ndnuts.Attachexhauststackto

andnuts.

valveexhaustpipecarriesexhaust

e atmosphere.

andnuts thatholdpipeto

lampwhichholdspipeto frame.

eonheaterpipeflangeandfasten

tallclampthatholdspipeto frame.

M


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RTRUCK-TRAILERM25

LNGSYSTEM.

vecoverfromenginecompart-

enremoveradiatorcap.Fill cooling

run untilwatertemperaturegage

ill coolingsystemagain.

Units.Inspectallhoseconnec-

s.Clampsmustbetightandhose

ctdraincocksonradiator,water

age.Examinea\lgasketsatwater

allboltsand nutsatthesewater

otat(par.98),thenremoveupper

aceradiatorcap.Attachalength of

ion,thenattachalengthofhoseto

dinsertreverseflushinggunin this

egun toawatertapand theair

urnonthewaterandwhenthe

shortblasts.Allowradiatortofill

ontinuethis flushinguntilwater

omwaterpumpinletandattach

removehosefromwaterpump

etotheoutlet,theninsert gun.in

e(1).

ntifreezecompoundprescribed

rsolutionintoradiatoruntil

d rununtilwatertemperaturegage

inderofsolutioninto radiator.

vity

penradiatordraincock,cylin-

umpdraincock.Radiatordrain

canbereachedfromunderneath

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cockisonright rearsideofcylin-

bottomofwaterpump.Theair

erbyremovingpipeplug inair

eglycolsolutionintocontainersso

eson thefanassemblywhich

aterpumpbysixcap screwsthat

waterpumpareoperatedbytwobelts

kshaft.

ck

romsixcapscrewsthathold

inradiatorshroud.Removewater

an outofradiatorshroud.

orshroud, theninstallwater

fantowaterpumpwith sixfan

lacewithlockwires.

typefanbelts whicharedriven

Thesebeltsoperatethefanandthe

t inordertopreventoverheating

M


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RTRUCK-TRAILERM25

whichholdwaterpumptothe

nsetscrewlocknutandturn set

etighteninguntil itisjust possible

handpressure atthefanblades.

s whichsecurefanpumptoside

tholdwaterpumpto water

ewlocknutandturn setscrewto

pumpasfaraspossible.Pryfan

ATGASKET.WATEROUTLETMANIFOLD

NPIPE

ostat

en removebeltsoverfanblades

er fanbladesandontocrank-

pumppulley.Raise waterpumpby

retight,thentightenset screwlock

holdwaterpumpto sidebrackets.

mostatisa bellowstypeandis

ldandthermostatvalvebody.It

ndtheradiatorduring thewarm-up

M


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RTRUCK-TRAILERM25

wthecooledwaterintheradiator

eached160°F.

reenutsandlockwashersthat

dthenremovetwonutsandlock

etelbowto waterpump.Remove

terpumpinletelbowasan as-

etelbowgasket.Loosenhoseclamps

mbly.Disconnectwatertempera-

talled

sket.Removetwocapscrewsand

eadoildrain pipetocylinderhead,

kcase.Pullthermostatvalvebody

nremovethermostatfrominsideof

ostatgasketoffwateroutletmani-

athermostatopensis very

kedwheneverthecoolingsystemis

statinacontainerofwateralong

ntil thethermostatstartsto

M


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adfrom160°Fto165°F.Continue

statis wideopen.Thethermometer

mostatsthatdonot opencom-

ohigh atemperature,mustbe

stoosoonwillcausethe engineto

e,andthethermostatthatopenstoo

n,maycausetheenginetooverheat.

ermostatgasketonwater out-

tatinthe manifold.Placethermo-

ed

allcylinderheadoil drainpipein

heoppositeendtothe cylinderhead

hers.Installanotherthermostat

atertemperaturegageandthen

urewithhoseclamps.Installwater

ninstallthermostatbypassand

mbly.Securewaterpumpinlet

s andlockwashers,thensecure

eenutsandlockwashers.

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RTRUCK-TRAILERM25

erpumpis animpellertype

ftheengine cylinderblock.Thefan

ppulleyandboth aredrivenbytwo

pulleyonthecrankshaft.

emovefan(par.96).Loosen

d slidehoseoffwaterpump.

rpumpassemblytowaterpump

tingsetscrewlocknutaboutfive

ROD

diatorArmorPlateDoors

waterinletelbowandthermostatby-

oosenhoseclampsonbottomhose(to

osentwonutsthat holdpumpto

derwaterpumpandallow pump

evingtensiononfan belts.Remove

eandremovefour lockwashers

pandfanbeltsin oneoperation.

Install fanbeltsonwaterpump

andinstallfour nuts,lockwashers

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to sidebrackets.Adjustpump

bottomhoseonpumpandtighten

rinlet pipeandtightenhoseclamps.

NDLINKAGE.

.The twoarmorplatedoorson

diatorfromdamageduringcombat.

closedbymeansofaleverat the

ateDoorLinkage

rdoorsmustbestraight open

djust,removecotterpinandclevis

sat endofrodhavinglocknut;

hdooris atrightangles;then

and cotterpins.

6).Disconnectairlineto air

washerthatholdsair horntoright

wardleftofvehicle.Removefive

holdair cleanersidepanand

andclevispinsthathold radiator

ushcontrolrodsoutofthe way.

hathold crosstubeleverto

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K-TRAILERM25

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K-TRAILERM25

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RTRUCK-TRAILERIV25

ofcommander'sseat,thenre-

evertocrosstubeandremovelever.

whichholdradiatordoor control

velever.Removecrosstubewitharm

crosstubearmandremovearm.

dswivelsfromradiatordoors.Re-

asherthathold radiatordoorcon-

henremovehandlewithradiator

rpin,clevispin,andwasherthat

radiatordoorcontrolhandle.Re-

h radiatordoorcontrolrods,then

eachrod. Removecotterpinsand

126). Installlocknutsonboth

ninstall fouryokesonrods.Install

oncross tubearm.Installradiator

rcontrolhandle withaclevispin,

dlein bracketonfloorofcaband

dcotterpin.Install washer,swivel,

doors.I nstallcrosstubearmon

s. Installcrosstubeinsidefrontof

d cotterpins.Installcrosstube

ithpin,thenattachlevertoradiator

and cotterpin.Attachradiatordoor

withclevispinsandcotterpins.

astenwithfivebolts,nuts,and lock

nstallbolt, nut,andlockwasherto

rlineto airhorn.Adjustshutters

he finandtubularcore

ront ofthevehicleandthecoreis

catedonthe topleftsideofthe

dfromdamageduringcombatby

peratedbya leveratthecom-

TIONS.Disconnectbattery.Draincool-

wagefromtopofenginetop cover.

renginesidecovers(twoonright

verradiatorfillercap andover

llercap.

s.128and129).Removetwonuts

d rightsidestripsto enginetop

ts,andlockwashersthatholdleft

PIPES(figs.128and129).Disconnect

ct(onenginetopcover)byloosen-

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oseoffairductelbow.Disconnect

ooseningtophoseclampandprying

MPERATURETUBEANDVOLTAGE

and129).Loosentwowatertemperature

f enginetopcoverandslidetube

lampscrewsthatholdvoltageregu-

d removeconduitfromclamps.

NERS.Disconnectaircleanertoair

ampand pullinghoseoffconnec-

TOPCOVER)

TopCover

s,nuts, andlockwasherswhich

nair ductanddriveboltsoutof

nnectionfromcover.

ULATORWIRING(fig.128).Remove

chholdwirestovoltageregulator

geregulatorgroundstrapatthermo-

ngnut,lockwasher,and star

OVER(fig.129).Removetoprearbolt,

hradiatorside covertoenginetop

ckwashers,andstarwashersthat

TE:Thesebolts areunderthe

siblebyreachingthroughthe

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HTSWITCH

NCTIONBLOCK

P)

TOJUNCTION

GHT(RIGHT)

GHT(LEFT)

DOMELIGHT

HT

RADIATOR

LGHT(LEFT)

RTRUCK-TRAILERM25

BLOCKHEAD

MMER

NCTIONBLOCK

P)

LIGHTSWITCH

EPT

NINSTRU-

BLOCK

HT

HT(RIGHT)

GHT(LEFT)

LIGHT

GHT(RIGHT)

NCTIONBLOCK,

MOTORS

TOL,INCLUSIVE,ISNECESSARYFORREMOVALOFCAB

ckWiring

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t ofthecab.Pryboltsout ofthe

s,lockwashers,andstarwashers

covertoenginerearcover.Remove

adiofilter wiretoenginetopcover.

coveroutof cab.

KSANDWHIFFLETREE.Unlatch

fttanksoffvehicle.Remove

Removefloodlightsanddisconnect

fig. 130)atmainjunctionblock.

emovingfromjunctionblock.

N

ER

ngBolts

OSHUTTERSANDFRONTGROUND

evispinthatholdradiatorshutters

olsbackand outoftheway.Re-

tgroundstrapto framefrontcross

,andcotterpinswhichholdcabto

reaccessiblefrominside of

OUSE.Removeonebolt,nut,andl ock

heelhousestrap,fivebolts,nuts,and

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RUCK-TRAILERM25

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twheelhouse,andsevenbolts,nuts,

rightwheelhouse(fig.132).Re-

housegroundstrap.Removeone

cornerofleftwheelhousestrap.

lhousegroundstrap.

LEIRONS(fig.133).Removefive

holdcab angleironstoeachsideof

LLERSTRAP(fig.134).Removefive

chholdcabright fillerstrap(at

epeatprocedureonoppositeside

NBox(fig.135).Removefourbolts,

drightammunitionboxto cab

ACKET)

RACKET)

AMPS

gBracket

CAB

MMANDER'SSEAT(fig.135).Remove

whichholdright crewseatback

ift crewrightseatcushionoffits

ndlockwashersthatholdcom-

derwheelhouseandboltsinside

LHOUSE(fig.134).Pryrightwheel

seup andlayitalongsideengine,

Attachchainthroughcabatcab

oahoist onrightside.Repeat

,attachingchaintoanotherhoist.

operatoron bothsidesoftractor

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RTRUCK-TRAILERM25

p

O(figs.137and138).Removethree

holdradiator toptieplateand

ampsandremoveradiatorbottom

movetworadiatortophosewith

rewswhichholdwiringcableto

twoclamps.

ERATUREINDICATORCABLEAND

MOVEFAN.Removefourbolts,nuts,and

ghtside plateandradiatorfiller

plate out.Loosenthreeclamps

rcabletoradiator andremove

ablefromoilfilterassembly.Re-

orrodtoradiator.Removesixcap

bladeassemblytowaterpump

fan shroudofradiator.

SEMBLY(fig.139).Removetworadi-

washers,springs,andtopwashers.

urearopetobracketandattachrope

backaboutan inchandliftradi-

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137,138,and139).Installfanblade

chropetoradiatorand toahoist

assis.Installradiatortoptieplate

nd lockwashers.Installradiator

oseclamps.Install radiatortop

mps.Attachwiringcableto radi-

ndscrews.Installtwo radiator

gs,bottomwashers,andnutsand

ATORSIDEPLATE.Installfanblade

enwithsix capscrewsandlock

catorcableunderthreeclamps,on

s;thenattachcabletooil filter.

onradiatorandfasten clampwith

lateand fastenplatetoradiator

fourbolts,nuts,and lockwashers.

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RTRUCK-TRAILERM25

sembly

OUSE,ANDSEATS.Usetwohoistsand

ns(fig.136). Liftcabandposition

house.Installrightwatercanand

dfastenwithfourbolts,nuts, and

eatcushionandright andleftseat

uts,and lockwashers.

Box,CABFILLERSTRIP,ANDANGLE

boxandfastenwithfour bolts,nuts,

llcabright andleftfillerstrips and

ashers(fig.134).I nstallcabright

n(fig.133),andfastenwith bolts,

Installbolt,nut,andlockwashers

estrap.Installscrewthatholdsright

sevenbolts,nuts,and lockwashers

se(fig.132),theninstallfivebolts,

e ofrightwheelhouse.Installone

cornerofrightwheelhousestrap.

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s—RearView

RADIATORSHUTTERS.Fastenfront

tshuttercontrolsbyinstallingclevis

(Ato L,fig.130)atmainjunction

cotterpins thatholdfrontofcab

fletree,andweldingtanks.

VER(fig.129).Installenginetop

nginetop coverandfastenwith

urbolts,nuts,lockwashers,and

fenginetopcovertoenginerear

openingsinstallfivebolts,nuts,

atholdenginetop covertodash

fcoverwith nutsontop).Install

ersthatholdradiatorsidecoverto

dureonoppositeside.

GULATOR(fig.128).Attachvoltage

statvalvehousingstudand fasten

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RTRUCK-TRAILERM25

s—FrontView

asher.Attachwirestovoltageregu-

nd lockwashers.

S.Installaircleanerconnectionon

wobolts, nuts,andlockwashers.

byinstallinghoseandtightening

ULATORCABLEANDWATERTEMPERA-

ulatorcableconduitundertwoclamps

ampscrews.Installwater tempera-

nginetopcoverandtightenclamp

SSORANDCARBURETORTOAIRDUCT.

oairductpipeonair ductelbowand

forcarburetorair ductpipeonair

tenatbottomwith twobolts,

htopofleft sidestripandtopright

thnutsandlockwashers.

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moved

OVERS(fig.127).Installcoversover

ulicsteeringoil reservoir.Install

nwithturnbuckles.

ANDCONNECTBATTERY.Install

ver.Fillcoolingsystem(par.95).

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RUCK-TRAILERM25

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TA.

mconsistsoftwosetsof spark

ignitioncoils,adistributorand igni-

Eachcylinderhas twosparkplugs,

e rightside.Twoignitionswitches

e plugs.Thetwoignitioncoilsare

ointsin thedistributor.Theignition

olds,a longmanifoldateachside

oldacrossthefrontofthe cylinder

areonthe instrumentpanelandare

manual.

oilsaresecuredto theleftside

eyareconnectedtothebattery

edistributoron thehightensionside.

nsformthelowvoltagesuppliedby

geenergynecessarytojumpthespark

dlockwasherswhichholdwires

twonutsandlockwashersthat hold

wohightensionwireterminalsfrom

gnutsandlockwashers(ignition-

randremovewires.Removefour

chholdignitioncoilsto ignitioncoil

ndcapacitors.

ncoilson ignitioncoilbracket

fastencoilsandcapacitorswith

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RTRUCK-TRAILERM25

.Installwires(ignition-coil-to-

nd lockwashers.Screwhigh

nstalltwo nutsandlockwashersthat

ires(ignition-switch-to-coil)on

ckwashers.

ocatedonthe leftsideofthe

heaccessorydriveshaft.Thedis-

points,onesetina fixedpositionand

Removed

orcapisclampedon thedistributor

e 12sparkplugwires,andtwo

oilwires.

TIONS.Prytwodistributorcapclamps

gwires outofcapandpull high

rotorfromdistributorshaft.

TACTS.Ifbreakerpointsarea grayish

yneednot bereplaced.Replace

sinstructedbelow.Ifit isnecessary

honethemwithastonetoa smooth,

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llyinspectdistributorcapforcracks,

htensionterminals.Replacecapif

Inspecttheinserts oninsideofcap.

maluse,theverticalfaceoftheinserts

:Donotfile.Ifthe burningisexces-

ertsforsignsof burningonhori-

bleat thispoint,itis anindication

istoolarge.If thisconditionis

cks,andreplacerotor,ifcracked.

eofburningontop ofmetalstrip.

metalstripmaybecomeslightly

ound ontopofmetalstrip, replace

ndenseronanMlcircuittester.

eadto agroundonengine:connect

itchterminal.Insertcondenserin

rttestleadtocondenserpigtail.

Turn onrotorswitch.Adjust

ngpossible withoutmissing.Move

cord"andobserveeffectonhigh

esterbreakercontacts.Repeattest

ofcondenserpigtaillead.Ifswitch-

lt inarcingandsparkdoesnot

arcingdoesoccurorsparkmisses,

mallyand.mustbereplaced.If

tion,itindicatesafaultylead,and

ewandlockwasherwhich

m,thenremovescrewandlock

breakersub-plateandremovecon-

andlockwasherwhichholdremain-

te,thenremovescrewandlock

reandcoilconnectorwiretobreaker

e.Removescrewandlockwasher

breakersub-plateandremovewire.

ovetwobreakerarmspring

massemblies(onefrombreaker

partialplate).Removetwobreaker

ovetwobreakercontactscrewsfrom

ub-plate.

wobreakercontactscrews

otheronbreakersub-plate)and

locknutsbutdo nottightennuts.

es(oneonbreakersub-plateand

eninstall twobreakerarmspring

onbreakersub-plateandfastenwith

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.Installignition-coil-to-distributor

lockwashers.Installignition-coil-

andtheninstall sparkplugwires.

onwiresarenumbered.Install

number.Frontignitioncoilhigh

marked"L"andrearignitioncoil

capmarked"/?."Distributorrotates

tributor shaftuntilboth

nmeasure(feelergage)gap between

uldbe 0.023inchandifit isnot,

ugGap

.023inchisobtained,then tighten

epeatprocedureonopposite(mov-

utorshaftandobservewhetheror

metime,if not,loosenthreescrews

andturnplate untilbothsetsof

sly.

efeltwickwithlightengineoil

apandmeasureendplayof

dplayshouldbe 0.003inchto

ibutor.

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K-TRAILERM25

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ampscrew(fig.141).Remove

t"IGN."Turndistributor until

tenclampscrew.Checktimingby

eadtoengine,andthenattach

ug.Runengineatidlingspeed and

onof"IGN" markonflywheel

plug.Ifitis notdirectlyopposite

inflywheelhousing)loosenclamp

markis inlinewithpointer.

kplugsare 14mminsize and

arkplugsareusedfor eachcylinder

ghtsidesofthe cylinderblock.

p),for completeinformation

parkgap.

esamecharacteristicsandin

therwisetroublewillbe experienced

oldaplugor withpre-ignitionand

to toohotaplug.The airgapmust

is0.018inchto0.020 inch(an

startingandabreakingdownof the

d aclosegapwillcauseuneven

at highspeeds).Makecertainspark

vebeentestedin asparkplugtesting

fthe12 sparkplugs.Remove

rovidedtopreventbreakageof

parkpluggasketswithengine

tseatincylinderhead.Usespecial

sdowntightly againstthegasket,

yandsquarelyseated.NOTE://a

plugdoesnotseatfirmlyand tightly,

ht, then"blowby"willoccurwhich

eplugand resultinpre-ignitionand

parkplugs arecarriedinmetal

dfrontof thecylinderblock.Each

amped"R"or"L"toshow whether

rleftsideof theengine.Thebandis

mberforwhichit isintended.The

samemanner(fig.145)sothatwires

lugsuppressorsareused oneach

e.

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RTRUCK-TRAILERM25

arkings

ndWiresAssembly.Before

achwirebyholding oneendofthe

of achargedbatteryandtouch

arkoccurs,theignitionwireis not.

eshowingnosparkora weakspark.

oveignitionwiremarkingtag

wireto bereplaced,thenunscrew

Stripinsulationoff endofignition

thenewwireonend ofwirebeing

gether.Pulloldwire outandnew

nitionwiremarkingtagandrubber

ressorontonewignition wire.

ires.Removeoilcooleras-

embly(par.99),carburetor

throttlevalvehousingassembly.

s andoffdistributor.Removetwo

erswhichholdfrontwiremanifold

twonutsandlockwasherswhich

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ylinderblockandrepeatprocedure

moveleftside,rightside,andfront

es.

s.Placewire manifoldsin

side, rightside,andfrontmani-

washers,andnuts.Install ignition

utor.Installgovernorthrottlevalve

ar.85),waterpump(par.99),and

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RTRUCK-TRAILERM25

NGSYSTEM

109

TA.

eneratingsystemconsistsof

withradiofilter,crankingmotor,

tarterswitch.Thegeneratorsup-

gebatteriesto maintainthemin

regulatorisbetweenthegenerator

neratoroutputto thebatteries.A

andsuppressesanyradiointerfer-

eansofcrankingthe engineand

rswitchwhichis operatedbythe

rswitchislocatedonthe instru-

tionXXX.

heavyduty,12-voltventilating

eengineanddrivenby theaccessory

neratoriscontrolledbythevoltage

pcover.

dlockwashersthatholdwiring

apacitorandwiresfromterminals.

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NGSYSTEM

hichholdgeneratortogenerator

ouplingspiderboltsandnutsandlift

allgeneratoronbracketandthen

derboltsand nuts.Fastengenerator

ews.Installcapacitorandwireson

thtwonutsand lockwashers.

eversegeneratorpolaritywillcause

rn.To makecertainthatgenerator

T

adBandRemoved

risreconnected,momentarilycon-

tothe armatureterminalbefore

eofbatterycurrentwillcorrectly

NDRADIOFILTER.

ageregulatorconsistsofthree

mitingregulator,anda voltage

nnects,anddisconnects,thegener-

latorandcurrent-limitregulator

ofchargenecessaryfortheoper-

Theregulatorissecuredto the

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RTRUCK-TRAILERM25

sandlockwashersthathold

vetwocapscrewsandlockwashers

ndpullfilterforwarduntilscrew

onbackof filtercanberemoved.

vefourbolts,nuts,and lockwashers

ket,andremoveregulatorfrom

ULATOR.Installvoltageregulatoron

uts,andlockwashers,leaving

internal-externaltoothedwasheron

ulator,but notthroughbracket.

washerbetweenregulatorand

asher.Installbandstrap onbolt,

thedwasher.Installnutonbolt.

dconnectwireonbackoffilter,

thHeadBandRemoved

sher.Securefiltertobracketwith

Connectwirestovoltageregulator

ockwashers.NOTE:Radiofilter

bracket.

ftertheregulatorhasbeeninstalled

tmentsorchecksofeithergener-

thearmatureandbatteryterminals

hajumper.Thispermits amomen-

egenerator,whichcorrectlypolar-

y.CAUTION:Neveroperatethe

nnectedandtheleaddisconnected

ormorethana minute,asthis

generatorwhichwoulddamageit.

orislocatedontheright rear

totheflywheelhousing.Thecrank-

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NGSYSTEM

xstarting devicewhichmeshes

ostartthe engine.

kwasherwhichholdcablefrom

ngmotor.Removethreecapscrews

ortoflywheelhousingandremove

WITCH.

neticstarterswitchisa heavy

and insidepartofthe frame,close

buttonon theinstrumentpanel

witch

tch,which,inturn,operatesthe

dlockwashersthatholdcable

attery andstarterbutton.Remove

rwhichholdwireto starterbutton.

washersthatholdswitchto frame

arterswitchonframeand

ckwashers.Connectwiresto

ngmotorandfastenwithbolts and

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LEFT

OMMAIN

FROM

RTRUCK-TRAILERM25

VINGLIGHT

HTWIRE

OCK

NLEFT

OMMAIN

ROMMAIN

tCornerofCab

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YSTEM

ghts120

23

A.

ricalunitsandlightingsystem

ystemwhichisusedforlighting and

atteriesareusedandconnectedin

sarytooperatethesystem.Thesemi-

in part3.

-162

-3N

de3012C,sealedbeam

e3012D,sealed beam

e

nwith lightisacombination

e sirenandlightare locatedonthe

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K-TRAILERM25

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YSTEM

lasherunitisa partoftheinstru-

nstallationiscoveredinparagraph

LY(fig.149).Removetwosidevents

emovelightassemblybytakingout

offlightassembly.

LY(fig.150).Takeouttwocapscrews

removebaseassembly.

TORASSEMBLY(fig.150).Pushcord

otorassemblyfromsirenbody.

ssembled

OTOR(fig.150).Removetwosocket

wheeltomotorarmatureshaft.Take

atholdsirenhousingto motorbody

GHTASSEMBLY(fig.151).Takeout

Movedoorslightlycounterclockwise

flector).Removebulbbypressing

wise.Liftoutreflectorwithgasket.

d disconnectgroundwirefrom

wireintolightbodyand removebase

body.

REFLECTORBASE(fig.151).Remove

ve ofreflectorbase.Liftoutplug

utofsleeveofreflectorbase.Push

socket.Unsolderwirefromsocket.

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RTRUCK-TRAILERM25

ECTORBASE(fig.151).Threadwire

aseandupthroughholein reflector.

ndsolderwireto lugatbottomof

leinreflector,keepingwirepulled

e,fastenwith setscrewthrough

inend ofsleeve.

NDBASEASSEMBLY(fig.151).Place

ctor.Connectgroundwireto re-

kwasherandnut.Threadlead wire

htbodyfrominside.Install assembly

stallation

acelensanddooron frontoflight

tilattachingscrewholesmatch.

ANDHOUSING)ONMOTOR(fig.150).

ront ofmotor.Fastenwithfour

Placesirenwheelonmotorshaft

motor.Fastenwheelbytightening

motorleadwire throughfronthole

stallmotorinbody.Insert motor

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YSTEM

ALLOWERBEAMWIRE(NATURAL

ER)WITH2PARALLELGREENTRACERS)

GRING

sembled

base.Fastenbasetobodywithtwo

ers.

BLY(fig.149).Placelightbodyover

nwithshort screwsandtoothed

acesidevents inposition,closed

sandtoothedlockwashers.

wothumbscrewsandlock

dremovebox.Removenutsand

ellowwireandwhitewire leading

sandpullwiringthrough cablamp

tsirenandlight offsirencab

ren andlightonsiren cab

ted throughsirencabbracketand

dlightto sirencabbracketwith

Attachyellowwireandwhitewire

ckwashers.Install junctionbox

sandlockwashers.

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RTRUCK-TRAILERM25

.The twoheadlightsaresecured

istofabodyand lenswhichenclose

htsare providedwithcanvascovers

orisinstorage.

NITREPLACEMENT(fig.153).Remove

dtakeoffdoor.Removesealedbeam

goutthree screwsandliftingoff

Light—Disassembled

nitanddisconnectplug.Toinstall,

-unitandplaceit inpositionwith

s infrontoflight body.Inthisposi-

bracketsideofthe lightbody.

verlamp-unitwithscrewholes in

y.Fastenringwiththree screws.

3).Wiringandterminalshould

Removesealedbeamlamp-unit.

y.Slidegrommetoffconduit.Pull

rontof light.Installwiringassembly

M


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YSTEM

dyfrominside.Installgrommets.

OTE://itis necessarytoreplace

wireisattachedtocorrectrecess

forupperbeam(naturalwith

for lowerbeam(naturalwithtwo

ssis forground(natural).

hereisno adjustmentofthehead-

nbepositionedfor alteringthedirec-

betweenthelightand itsmounting.


ver,thenremovecover.Remove

ack-whitewireandthen white-

900

dDoorAssembly

moveyellowgroundwirebyremov-

tocamlampbracket.Removenut

to bracketandremovelightwith

eadlightso thatwirespass

tenlightto bracketwithnutand

nd)wiretocablampbracketwith

wireandwhite-greenwiretojunc-

40)andfastenwith nutsandlock

eronleftjunctionboxand fasten

washers.

M


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RTRUCK-TRAILERM25

UnitfromSpotlight

GHT.

ckoutdrivinglightis located

andconsistsof abodyandlens

unit.

NITREPLACEMENT.Removedoorand

tdoorscrewatbottomofdoor.

romunitretainingring.Remove

fromcenterofsealedunit. Pryup

fromdoor.Pullwiring andconduit

onduitinbody.Placenewsealed

ppositedoorscrewlug, thusbringing

bled.Installretainingringwith slot

unit.Fastenringwithspringclips.

r)tolugon retaining,ring.Attach

ncenterof unit.Assembleunitand

stenwith doorscrewatbottom

M


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K-TRAILERM25

M


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YSTEM

E.Removesealedunit.Pulldefective

ordinthroughbackofbody.Fasten

m endtopreventwirefrombeing

ofwirewithsolder.

E.Removesealedunit.Unsolderand

ombodyoflight.Installnewground

y.


dremovejunctionboxcover.Re-

ackwireleadingto blackoutdriv-

sherthat holdlighttocablamp

lampbracketwhileat thesame

gLight(fig.154).Install

passes throughcablampbracket

withnutandlockwasher.Install

astenwithnut andlockwasher

ljunctionboxcoverandfastenwith

ers.

HT.

kerandspotlightis locatedon

t cornerandconsistsofabody

mp-unit.Aremovableshieldis

Pryup threeclipswithscrew-

nwingnutandliftarm offlamp.

emovedoorscrewatbottomofdoor

nnectterminalsfromsealedunitbut

y.Pryupwireclipand removere-

fromdoor.

nstallsealedunitindoor.Place

stenwithclips(fig.156).Fasten

areinbody toterminalsonsealed

dinglugandinside oftopofdoor

ottomof doorwithtappedholein

ghten doorscrew.Installshield

n threelugsondoor.Unscrewwing

hto installlamponarm,then

wingnutandremovecombina-

otlightarm.Pull spotlightarm,

mountingbracket.Loosentwoset

movespotlightknobassembly.Then

andlefrommountingbracket.Re-

wireon handle,thenremovescrews

Removescrewthatholdswire

dlockwashersthatholdmounting

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K-TRAILERM25

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YSTEM

ountingbracketoncabroof

ckwashers.Screwupperhalfof

racketandthenattachlowerhalf

ensetscrews.Installwiringunder

w,thenattachwiretoswitchwith

stenwithscrews.Installspotlight

tallspotlighton armandtighten

uttoturn lightinanyposition

floodlightsofthe lamptype

b.Theyareforfield useandeach

—Disassembled

crewfrombottomsideoffront

gether.Removelampbyturning

movecorkgasketfromreflector.

flectortobodyoflight. Liftoff

ACKET.Removenutsandlock

olts. Loosenclampscrew.Remove

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RTRUCK-TRAILERM25

ssembly.Removebracketbytaking

cerandspringwasherfrommounting

tingarm.

velampsocketbyfirstdisconnecting

nunscrewingfocusingscrewfrom

ring,washer,andspacer.Discon-

chbody.Removeknurlednutfrom

Removeswitchfrominsideof body.

oggleswitchbyinsertingfromin-

ednuton outside.Insertfocusing

fbodyandholdin placewiththe

dspringoverscrew.Holdsocket

opLight—Disassembled

gfocusingscrewintotappedholein

nectwirefromsockettoswitch

rpostonswitchbody.Clamppost

ftjaws.Placebodybetweenends

ougharm andintobody.

LECTOR.Turnsocketassemblyso

ereflectoroversocketwithslotin

tingarm.Installthree smallscrews

:Tappedholein bottomedgeof

notchinrimof reflector.Installlamp

ockwise.

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YSTEM

gasket,fasteninginplacewith

ots. Assemblelenstodoor,being

eof doorfrommountingscrewhole.

lelensto lightbodybyhooking

ont ofbodyandliningup screw

bottomoffaceof body.Installdoor

OMOUNTINGARM.Insertpostof

lacespringwasherandspacerover

-lockingnut.

oroutoflight,thenremovenuts,

hholdlightto bracketandliftlights

IGHTASSEMBLY

topLight—Disassembled

inbracketsandthen install

whichholdlightsto brackets.In-

PLIGHT.

vicetailand stoplightisused

dislocatedon therearofthe chassis

dy,door,andsealedbeamlamp-unit.

vetwoscrewsandtakeoffdoor,

lower) andreplace.

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RTRUCK-TRAILERM25

TSERVICECLEARANCELIGHT.CAB

GHTBASEBLACKOUTCLEARANCELIGHT

outClearanceLightsandConnections


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YSTEM

connectoroutoflight,then

swhichholdlight tochassisframe

ght andfastenwithtwonuts

ingconnectorinlight.

TOPLIGHT.

ckouttailandstop lightis

koutconditionsandis locatedon

TASSEMBLY


elightconsistsofabody,door,

vetwoscrewsthatholddoor

its frombody.

connectoroutoflight and

sthatholdli ghttobracket.Remove

ght onbracketandfasten

nstallwiring connectorinlight.

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RTRUCK-TRAILERM25

UTCLEARANCELIGHTS.

viceclearancelightsandblack-

a meansofjudgingtheextreme

parking.Theprocedurefor

me.Thelights aresecuredtothe

onsistofadoor, base,andlamp.

5).Takeouttwoscrewsthat

doorwithglasslens.Removetwo

ningclips bypushingoutward

r.Moveclipsinwardand liftoff

counterclockwisewhilepressing

ight

ushwire throughlampopening.

ckplate andrubbernipple.Install

stallrubbernipple.Pushwire

llgasket.Installlamp,thenclips

with twosteeldoorscrewsand

stenwith twoscrews.

woscrewswhichholddoorto

mpandremovedoorgasket.From

ceclearancelightwireandthen

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EM

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RTRUCK-TRAILERM25

hwirethroughcabandremovewire.

washerswhichholdbaseand

aseand gasketoncaband

ckwashers.Pushwire through

twiresinsidecabandtapecon-

sket.Installcoverandfastenwith

GHT.

ckoutmarkerlightsarelocated

onsistsofabody,door,andlamp.

vescrewthatholdsdoortobody

Installlampandtheninstall door.

twiringatmainjunctionblock.

athold,lightto bumperandremove

ont bumperandfastenwith

wiringatmainjunctionblock(wir-

melightin thecenterofthe

locatedonthelight.Thelight

vetwodoorscrewsandtoothed

andgasketfromlampbase.Re-

dturningcounterclockwise.Remove

dwire fromswitchbase.Remove

h.Removeswitchfrominsideof

tof base.Installwireassemblyin

sten withknurlednut.Attach

seandfastenwithscrews.Install

ddoor.Fastenwithtwo screws

nuts,andlockwashersthat

tdownwardanddisconnectwires.

hen installlightandfasten

shers.

JUNCTIONBOX.

itrailerwiringjunctionbox

eto jointhejunctionboxtothe

itrailerandisusedto jointhe

ystems.Theboxconsistsofa body

hewiring terminals.

brackettocoverandbracket

nctionboxcoverfromtrailerwiring

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YSTEM

GBRACKETTOCOVERPIN

N

GROUNDWIRE)

TOPLIGHTWIRE)

gJunctionBoxandCover

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RTRUCK-TRAILERM25

ingandbracket.Installbracket

semitrailerwiringjunctionbox

coverspringon pin.Pushpin

dbracket,thenrivetpin onto

verbolt,nut,andlockwasher,

nutsfromterminalboltsandthen

vefourwireclipsandsemitrailer

(groundstostop lightmounting

andsemitrailerblackoutlight wires

rbolts,nuts,andlockwashers

nctionboxandsemitrailerwiring

—Disassembled

mebracket.Removeboxassembly

taillightwire,semitrailerblack-

(grounds tostoplightmounting

n terminalbolts,theninstallfour

heninstallanotherfournuts on

NDSWITCH.

.The signallightreeland

of ofthecabandare themeans

M


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YSTEM

andspotlightat adistancefrom

0).

andstarwasher.Removetop

winditself.Removemetalgrommet

ingonto reel,beingcarefulnotto

indreelaboutfiveturnsto putten-

dlowercovertogetherwithspring

lyuntilspringstop fallsintoplace.

s similartothatof anordinary

embly—CoverRemoved

grommetoverwiringandinposi-

overstogether.Fastenwithscrew

topcoverandinto reel.

sthatholdcoverto handle

thatholdgroundand positive

.Removescrewthatholdslight

Removescrewandlockwasher

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RTRUCK-TRAILERM25

sulator,thenlift triggerandspring

kwasherfrombolt whichholds

dle.Removenutandlockwasher

handremoveswitch.

dsecurewithnut andlock

ockwasherthat holdswitchon

n handle,theninstallinsulator

asher.Installlight wireandsecure

ndand positivewiresonhandle

veronhandleand securewithtwo

LY

ndwasherthatholdterminal

ire.Removetwocapscrewsand

ab,thenrepeatprocedureonswitch.

andswitchandfastenwith

.Connectwiretoreel,theninstall

nutand washer.

merswitchoperatesthehigh

ndislocatedonthe floorofthecab.

.

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YSTEM

andlockwasherswhichhold

omunderneathfloorboard,remove

oldthreewiresto dimmerswitch

floorboard.

floorboardinstalldimmer

of floorboardfastenswitchwith

munderneathfloorboardinstall

fastenwith threeclampsand

tery

IGHT.

commander'sdeskisa hooded,

)offlight.Removelamp,

socketupthroughlightand melt

onnector.Pullwireoutoflight,

hathold lighttocabbracket.

bracketandfastenwithnut

oughlight andsolderwiretoIP—

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K-TRAILERM25

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YSTEM

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RTRUCK-TRAILERM25

roughlight.Installswitchhandle,

etwostorage batterieslocated

earwallofthe cab.Theseare

ries.

ghtrearcrewseatcushionand

eandpositivecablesfrom"battery

mbatteriesandthenremovenuts

removehold-down.Lifttwobat-

wobatteriesand connectjumper

osts(fig.172).Connectgroundand

tteryhold-down,fasteningwith

arcrewseatcushion.

eboxis locatedtotheright

belowtheinstrumentpanel.The

hownonthewiringdiagram(fig.

insideofthefuse boxcover.

utof clipsonfuseblock.

seinto clipsonfuseblock.

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ANSMISSIONS,TRANSFER

NDDECLUTCHUNIT

trolsandlinkage130

andlinkage132

dlinkage135

missionpowertake-offand

issionpowertake-offand

TA.

ssionandclutcharelocated

llershafttransmitspowerfrom

iarytransmission,whichislocated

ion,andsecuredtotheframe

sembly.Thetransfercaseis

rytransmission.Thedeclutch

ndfrontside ofthetransfercase

aft tothefrontdifferentialand

thus providingameansofobtain-

d.A powertake-offassemblyis

fthe auxiliarytransmissionand

Asecondpowertake-offassembly,

arytransmission,suppliespowerto

mwinchassembly.Apropeller

reardifferentialandcarrier

etherearwheelsthrough thejack-

ION.

TAKE-OFF.

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RTRUCK-TRAILERM75

AKE-OFF.

VER

RodTunnel

NTERLOCKCONTROLSAND

sarytoconnectthegearshift

locatedinabox-shapedhousing

tothe cabfloorattheleft sideof

fa selectorshaftanddraglink

iftleveratone endandtothe

theoppositeend.Thedraglink

ctedbymeansoftwoselectoryokes

heselectorshaft.

TIONS.Removetheenginefrontside

watercanfrom backofdriver's

ndcrewseatat leftrearofcab

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MSSIONS,TRANSFERCASE,

UTCHUNIT

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RTRUCK-TRAILERM25

L(fig.174).Removechannelsealfrom

errodtunnelby removingfourbolts,

dsealto tunnel.Removeeightcap

bolt,nut,and lockwasherwhich

hannelseal offwheelhousing.

UNNEL(fig.174).Removesixcap

oldshifterhousingcoverplateto

Removefourcapscrewsandlock

ectorShaftBracketfromRemote

smissioncover.Removetwobolts,

dtunnelto seatsupport.Remove

rsandonebolt,nut, andlock

.Removetwocapscrewsandlock

unnelto shifterhousingcover.

S.Fromtheenginesideofthetunnel,

mthefuel tankchange-overvalve.

FTLEVERANDFRONTAXLEDECLUTCH

NEL(fig.175).Placethegearshiftleverin

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ANSMISSIONS,TRANSFERCASE,

CLUTCHUNIT

otterpinand straightpinwhich

o theshifterhousingcoverplate.

eonthe twolevers.Thenpullthe

eandlifttherear endfreeofthe

be liftedfromthevehicle.Remove

hhasbeen disconnected.Remove

mthebottomofthedeclutchlever

okeandremovetheleverand shifter

orShaft

AFT.Removethecotterpinandball

ketattherearend ofthedrag

cketfromtheshortoutershaft

oint springandseatfromtheball

ecapscrewsandlockwashers

ackettothetransmissionremote

of theselectorshaft,pulltheshaft

DGEARSHIFTLEVER(fig.177).Re-

kwasherswhichhold thegear-

housingcover.Thedraglinkwith

tachedcanthenbe liftedfrom

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RTRUCK-TRAILERM25

ROLSELECTORSHAFT(figs.176and

ketandfeltwasherfromrearend

ampbolt,nut,andlockwasher

odruffkey.Fromfrontendof

r,clampbolt,nut,andlockwasher,

odruffkey.

VERFROMDRAGLINK(figs.176and

ljointsocketand plug.Then

dseat fromfrontendofdrag link.

ofgearshiftlever.

OCKET(figs.176and177).Remove

ointsocketatfrontendof drag

ketfromendof draglinkand

ntsocketatrear endofdraglink

EVERBELL(figs.176and177). Re-

sionspring bytwistingitclock-

sher.Removemachinescrewand

er,removebell,and pulllever

enutandlockwasherfrompivot

SHIFTLEVER.Installpivotpinin

ndlockwasher,theninsertgear-

l belloverleverandon topof

a lockwasherandmachinescrew.

it counterclockwise,theninstall

ver.

LLJOINTPLUG(fig.180).Screwjam

chendofdraglink,then install

ndofdrag link.Installlowerend

cketwithballjointseat backof

ndballjointseat,ball jointspring,

ugtosocketwithcotterpin.

ROLSELECTORSHAFT(fig.176).

orshaftandinstallselectoryoke.

clampbolt,nut, andlockwasher

haft,nexttoyoke.Atrearend of

keinsamemanner,theninstall

andinstallselectorshaftbracket

DGEARSHIFTLEVER(figs.176and

hiftlever andhousingattached,

edwithboltholesin shifterhousing

thfourbolts,nuts,and lock

FT.Pushfrontendof remotecontrol

rshifthousing.Secureselectorshaft

ththreecapscrewsand lock

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CLUTCHUNIT

inballjointsocketat rearend

verend ofshortoutershiftlever.

eat intosocket,andinstallball

ljointplugin endofballjoint

thcotterpin.

VER(fig.174).Insertdeclutchlever

attachend oflevertoclevisyoke

gclevispinandcotter pin.

4).Liftshifterrodtunnelinto posi-

singcoverplateandaheadofcrew

aceshifterrodtunnelcoverin

straightpinandcotterpin which

hifter housingcoverplate.Install

whichholdtunnelto transmission

ockwasherswhichholdtunnel

.Installsevencapscrewsandlock

kwasherwhichhold tunneltofloor.

romenginesideoftunnel,connect

ge-overvalve.

INGCOVER.Installsixcap screwsand

ousingcoverplatetotunnel and

AL.Installchannelseal,theninstall

whichholdseal totunnel,and

sandonebolt, nut,andlockwasher

GINESIDECOVER.Installcrewseat

river'sseat(par.194);watercan

er'sseat(par.194). Installengine

ssionissecuredtothe flywheel

bymeansofthe clutchhousing,

ontendof thetransmission.A

romthemaintransmissionto the

ntransmissionhasfourforwardand

arytransmissionprovidesthree

ntransmissionspeeds.

NCOVER(fig.179).Removeportable

oncover,thenopenlidsoftrans-

sandstowage.Closelids, and

washersfromrearlid, andthree

mfrontlid. Openlidsandremove

omeachsideoftransmissioncover.

vehicle.

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K-TRAILERM25

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CLUTCHUNIT

AUSTPIPE,ANDHEATERVALVEPIPE

ocedureinparagraph93.

SETOFRONTAXLEPROPELLERSHAFT.

axlepropellershaft (par.139).

UNNELCOVER(fig.174).Remove

eatbackfromleftrear ofcab.

ewsandthebolt,nut,and lock

odtunnelcoverin positionatrear

thedrag link.

NTERSUNKHEADSCREW

er

KFROMSHORTOUTSIDESHIFTLEVER

mballjoint socketandremoveball

draglinkcanthenbeloweredout

AFTBRACKET(fig.176).Removethe

swhichsecurethebrackettothe

housing.Slidebracketoffremote

thebracket.

ROLHOUSING(fig.176).Removethe

whichsecurethehousingto the

singfromthe transmission.Re-

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RTRUCK-TRAILERM25

Removethethreebarposition

ousing.

LSHAFTLEVER(fig.176).Loosennut

ampboltand pullclutchpedal

clutchpedalshaft.Removethe

etwoclevisesatlowerendof arm

lshaftlevercanthen beremoved

R

WASHERPINMACHINESCREW

agLinkfromShortOutsideShiftLever

SSIONFROMUNIVERSALJOINT(fig.

s,andlockwasherswhichholdthe

lflangeyoke.

HOUSINGFROMFLYWHEELHOUSING

wsandlockwasherswhichsecure

housing.

ONFROMVEHICLE(fig.181).Placea

caseandattachslingto ahoist

ulltheassemblyback,freeofthe

suitabledollybeneaththevehicle.

,guideitcarefullybetweenthetwo

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CLUTCHUNIT

nsofthe dolly,slidetransmission

N(fig.181).Slidethetransmission

withitsinstalledposition.Attach

ssioncase,andbymeansofa

mount,pullthe transmission

E

mission

weenthetwofueltanksupport

ard,guidingmainshaftintoclutch

teddirectlyagainsttheflywheel

heflywheelhousing,andthe clutch

tchhousingtoflywheelhousing

ers.

ONTOUNIVERSALJOINT(fig.181).

ockwasherswhichholdthecom-

tothe universalflangeyoke.

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RTRUCK-TRAILERM75

LSHAFTLEVER(fig.181).Installthe

g clutchpedalshaft.Theninstall

the endofthelong clutchpedal

thearmtothe twoyokesatthe

nstallingclevispinandsecuring

nclutchpedaladjustinglever

ROLHOUSINGONTRANSMISSION(fig.

nggaskettothe transmission

nginpositionontransmission,

n neutral,andthatinnershifting

ebars.Securethehousingto the

ewsandlockwashers.

FTBRACKET(fig.181).Slidethe

tecontrolselectorshaft,andposi-

ntrolhousing.Securebracketto

dlockwashers.

OSHORTOUTSIDESHIFTLEVER(fig.

tion,withtheballjoint socketat

hortshiftlever.Install balljoint

ointpluginend ofballjoint

UNNELCOVER(fig.174).Placethe

n attheendof shifterrodtunnel,

rewsanda bolt,nut,andlock

ackofcrewmember'sseatat left

ETOFRONTAXLEPROPELLERSHAFT.

propellershaft(par.140).

AUSTPIPE,ANDHEATERVALVE

ocedureinparagraph93.

NCOVER.Liftthetransmissioncover

Openlidsofcoverand installthree

sateachsideof cover.Thenclose

ndlockwashersinrearlid and

sin frontlid.Openlidsandinstall

IONCONTROLSAND

smissionismountedinthe

smission,belowthetandemwinches.

intassemblytransmitspower

auxiliarytransmission.The

powertothereardifferentialand

rwheels.It alsotransmitspower

untedontherearofthe auxiliary

ansmitspowertothedeclutch

mblytransmitspowertothefront

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ECLUTCHUNIT

todrivethe frontaxle.Theauxiliary

ertothetwopowertake-offassem-

opandsideof theauxiliary

NCOVER(fig.179).Removeportable

oncoverassembly.Openlidsoftrans-

sand stowage.Thencloselids

ock washersfromrearlid,and

sfromfront lid.Nextopenlids

eadmachinescrewsfromeachside

missioncoverfromvehicle.

aryTransmissionShifterRod

RODS(fig.182).At thefrontendof

issionpowertake-offassembly,

shifterrods byremovingtwocotter

upperrodto firstspeedshiftrod

dspeedshiftingrod.Then,in space

ssembly,removetwocotterpins

er rearshifterrodclevisyoketo

rearshifterrodclevisyoketo

pperandlowerrods.

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RTRUCK-TRAILERM25

RRODS(fig.182).Afterremovingrear

ockwasherswhichsecureshifter

etbackonrear declutchshifter

smissionupperandlowerfront

athleftfrontendof vehicle,remove

whichsecurethetwoshifterrodsto

rmsbelowshiftinglever.Remove

ER(fig.183).Fromunderneathfront

nuts,andlockwasherswhich

ontbulkhead;twoofbolt heads

insidecab.Liftoutshiftinglever,

ssionShiftingLeverAssembly

ANSMISSIONSHIFTINGLEVER(fig.

ndbracketassemblyintoposition

bolts,nuts,andlockwasherswhich

NOTE:Exceptfortwoboltheads,

rom insidecab,accesstoboltsand

endofvehicle.

RRODS(fig.182).Placeauxiliary

ntshifterrodsin positionand

hirdspeed shiftingarmswith

orkingfromunderneathleft front

ods,slideshifterrodbracket,which

rwardand insertrearendsoftwo

terrodsintobracket.Securebracket

ckwashers.

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CLUTCHUNIT

RODS(fig.182).Secureupperand

rods,attachingclevisyokeatfront

ndingfrontrodwithaclevispin

pmountingtoauxiliarytrans-

upperandlowershifterrodsto

d tosecondandthirdspeed

twoclevispins andcotterpins.

NCOVER(fig.179).Lifttransmission

ab.Openlidsand installthree

ideof cover.Nextcloselidsand

ashersin rearlidandthree bolts,

Openlidsandinstallall tools

etoolboxon topoftransmission

ION.

smissionismountedinthe

smissionandbelowthetandem

donframecrossmembersbytwo

ear, andbytheauxiliarytrans-

istransmittedto theauxiliary

missionbymeansofa propeller

ntransmitspowertothereardif-

propeltherear wheels,andalso

se,whichis mountedontherear

etransfercasetransmitspowerto

onnectedtothefrontaxleassembly

ront wheeldriveavailablewhen

onalsotransmitspowertothetwo

haremountedatthetopandside

etoppowertake-offdrivesthe

dthesidepowertake-offdrives

TRANSMISSIONTOREARDIFFEREN-

ERSHAFT.Removeeightbolts,nuts,and

ionflangetouniversaljointyoke

andlowerpropellershaft and

HTOFRONTDIFFERENTIALPROPELLER

earingcaplockstrapsfrom cap

pstouniversalsleeveyoke(rear).

wostrapsand bearingcaps.Pry

bearingcanberemovedfromyoke

okeinoppositedirectiontoremove

yokeandpropellershaftout ofthe

okeattachedtodeclutchassembly.

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RTRUCK-TRAILERM25

NSMISSIONTOAUXILIARYTRANS-

(fig.178).Removeeightbolts,nuts,and

anionflangetofrontyoke.Then

ke,andremoveyokefromcom-

.

RODFROMPOWERTAKE-OFFSHIFT

vispinwhichholdshiftingrod to

OUNTEDWINCHDRIVESHAFT(fig.

winchdriveshaftissupportedby

hhousingsinglebearings,which

ort angles.Inordertomove

ectthetwobearingsfromfueltank

lts,nuts,andlockwashers,which

ieldto rearsupportangle,and

whichholdsecondbearing

Removesetscrewfromrearyoke

drive shaftforward,sorearyoke

tingpowertake-offintermediate

TRANSMISSIONGUARD(fig.178).

ssmemberbyremovingonebolt,

ngtheother bolt.Pullguardto

ssion.

DFROMTOPMOUNTINGPOWERTAKE-

cotterpinandclevispin, whichsecure

ksofgearshiftlinkage,and lower

WINCHUNIVERSALJOINTASSEMBLY.

tside mountingtoauxiliary

embly.NOTE:Whentheauxiliary

edfrom vehicle,universaljoint

rtake-offassembly.

NDUPPERREARSHIFTERRODS.Dis-

uxiliarytransmissionby rejnoving

keatrearendof rod.Disconnect

emanner.

ISTTOAUXILIARYTRANSMISSION

wisearoundauxiliarytransmis-

rear tandemwinchdrum,around

exttotransfercaseatrearof side

hoisttoslingsothatlift willbe

RYTRANSMISSIONFROMFRAMEAT

etwobolts,nuts,andlockwashers

ofauxiliarytransmissiontoframe

DOFAUXILIARYTRANSMISSIONFROM

mtopnutofeachtransfercasehanger

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ECLUTCHUNIT

gainingaccesstothetwo transfer

thetransfer caseendofthe

me,theprocedureforremovalof

neachhanger studcannotbe

ningwithanopen-endwrench.

ndmoveadjustingnut beneath

ogetherandleavingthestudfree

henuse awrenchonbothnuts

G

NASSEMBLY

ryTransmission

hiletopnut iskeptfromturning

NOTE:Readjustpositionofnuts

tudfromtopnut.Repeatprocedure

ehangerstud.

RANSMISSION(fig.184).Lowertrans-

ingand hoist,backofreartandem

semblytowardrearofthevehicle,

universaljointto pullfreeoftop

rauxiliarytransmission,guiding

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RTRUCK-TRAIIERM?5

tsof frameandchassis.Placeit

nderneaththevehicle.

DPOWERTAKE-OFF.Removeeight

chsecurecovertotopmountedpower

ndgasket.Removeeightcapscrews

owertake-offtoauxiliarytransmis-

-offandshifterhousinggasket.

hsecurepowertake-offtotrans-

EDPOWERTAKE-OFF.Proceedasout-

ASEANDDECLUTCHUNIT.Proceedas

2) through(6).NOTE:Donot

ddrivengearfrommainshaftrear

EANDDECLUTCHUNITONAUXILIARY

linedinsubparagraph137c (2)

DPOWERTAKE-OFFONAUXILIARY

ragraph137c(I).

POWERTAKE-OFFONAUXILIARY

fterhousing gasketonauxiliarytrans-

offintopositionon case.Secure

missioncasewitheightcapscrews

crewsbeing insidethecase.Install

e-offcaseandsecurecovertocase

shers.

LIARYTRANSMISSIONANDLIFTIT

eauxiliarytransmissionintoposition

achainsling aroundassembly,

nddeclutchassemblyandinback

Lowerahoistbackofthe rear

isttochainsling. Liftassembly

yraised,installoneendof tandem

therend intopmountedpower

sed. Guideassemblycarefully

clearsallframeandchassisparts.

re thattrunnionispositionedcor-

dpushauxiliarytransmissionfor-

UXILIARYTRANSMISSIONTOFRAME.

crossmember,screweachstud

withanopen-endwrenchanduse

ocknuts toturnstudinto nut.

weradjustingnutateach studand

ellatednut withacotterpin.

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CLUTCHUNIT

UXILIARYTRANSMISSIONTOFRAME

mecrossmemberbyinstalling two

OWERREARSHIFTERROD.Install

ureyokeat rearendoflower

smission.Repeatprocedureon

CHUNIVERSALJOINT.Useasocket

heset screwwhichsecuresthe

ssemblytothepowertake-off

TOPMOUNTINGPOWERTAKE-OFF

spinandcotterpinwhichsecurelever

offgearshiftrod.

RANSMISSIONGUARD.Liftguardinto

iarytransmissionandsecureit to

gtwobolts,nuts,and lockwashers.

NTEDWINCHDRIVESHAFT.Slide

ke.isinpositionon intermediate

xiliarytransmissionpowertake-off.

hsecuresyoketointermediate

s,nuts, andlockwashers,which

ingsinglebearingandshieldto

install twobolts,nuts,andlock

ngtofrontfueltank supportangle.

DTOPOWERTAKE-OFFSHIFTROD

sitiononpowertake-offshiftrod

stalling clevisandcotterpins.

MISSIONTOAUXILIARYTRANSMISSION

jointyokeon propellershaftandaline

tofauxiliarytransmission.Secure

ghtbolts,nutsand lockwashers.

jointyokeof propellershaftand

ASSEMBLYTOFRONTDIFFERENTIAL

nalofuniversalinto sleeveyokewhich

clutchassembly.Taptwobearing

dsofjournaland intosleeveyoke,

gcap lockstrapovereachbearing,

lockwashers.Bendlockstrap

RANSMISSIONTOREARDIFFEREN-

ropellershaftanduniversaljoint into

eatrearofauxiliarytransmission

ngebyinstallingeightbolts,nuts,

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RTRUCK-TRAILERM25

TUDVNUT.LOCKNUT

AuxiliaryTransmissionRemoved

ssecuredtothe rearofthe

sfercasegearsaredrivenbythe

clutchunitfordriving thefront

left frontofthetransfercase.

TIONS.Removeauxiliarytransmission

dpowertake-off(par.136).

S(fig.185).Removecotterpinlower

dlockit withasimilarnut on

eentransfercaseand auxiliary

renchestokeepthefour nutsfrom

irdwrenchtoturn lowertopnut

OMPANIONFLANGE(fig.181).Remove

omendoftransfer casemain

andremovekey.

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CLUTCHUNIT

RDRIVENANDDRIVEGEARS(figs.186

hichholdsspeedometeradapterto

ndremoveadapter.Thenremove

ometerdriveoutletcovertomain

utletcoverandoutletcovergasket.

kwashersandthreenutsand lock

rearbearingcaptotransfer case

et.Removespeedometerdrivengear

ainshaftrearbearingnut andlock

protectorwasherandmainshaft

SECOVER(fig.188).Remove16cap

ecuretransfercasecovertocase.

GCAP

RRApD

eedometerDriveAssembly

crewstoremovecover,withidler

shaftbearing,andrearbearingdriven

fercasecovergasket.

SE(fig.185).Removemaindrivegear

issionmainshaft.Removefivecap

ecuretransfercasetoauxiliarytrans-

rcaseandtransfercasegasket.

SEMBLYFROMTRANSFERCASE(fig.

tchshaft,andattachedpartsfrom

tsandlockwashers,whichsecure

over,andremovecarrierandgasket.

SEMBLY.Drivebearingcupintotrans-

ementnewdeclutchshaftbearing

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RTRUCK-TRAILERM25

enplacedeclutchassemblyoncase

kwashers.

E(fig.185).Cementnewauxiliary

skettoauxiliarytransmissioncase,

oldgaskethavebeenremoved.

gearonmainshaft.Installtransfer

rlongandshorttransfercasetrans-

missioncase.Installnutson three

crewsandlockwasherswhichsecure

HAFTREAR

WASHER

eGearInstalled

ssioncase.Lockcapscrewsandstud

ECOVER(fig.188).Cementnew

ntingsurfaceoftransfercase.Be

havebeenremoved.Lifttransfer

ercase,withidler shaftgearmesh-

withcoverdowelindowelholesof

ewith16capscrewsand lock

M


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CLUTCHUNIT

ANSMISSIONMAINSHAFTREARBEAR-

g intomainshaftrearbearing

aringretainer gasket,cementingit

erandmainshaft rearbearinginto

RDRIVEGEAR(fig.187).Placemain

ainshaftrear adjustingnutlock

nmainshaft.Installmainshaftrear

hlugsof lockwashers.Insertkeyin

dometerdrivegearintopositionwith

omTransferCase

etergearbushingintomain shaft

wmainshaft rearbearingcap

ap,and installcapovermain

cover.Securecapwiththreecap

ewsandstud nuts.

RDRIVENGEARANDADAPTER(figs.

ometerdriveoutletcovergasketto

eterdrivengearandspeedometer

and securecovertocapwithtwo

allspeedometeradaptertooutlet

M


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RTRUCK-TRAILERM25

MPANIONFLANGE.Installkeyon

angeontomainshaft.Secureflange

.

S(fig.185).Installtwotransfercase

ercasetoauxiliarytransmissioncase

mecrossmemberof vehicle.Insert

rytransmissioncaseand inturn

andtwoadjustingnuts)andthen

aseandauxiliarytransmissioncase

chAssembly

achstud untilstudcanenter

seandcastellatednutandcotterpin

tud.(Studthreadsshouldextend

eand one-halfthreads.)Tighten

ositionwithtwolocknuts.Install

DPOWERTAKE-OFFONAUXILIARY

aph136.

RANSMISSIONINVEHICLE.Referto

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CLUTCHUNIT

CONTROLSANDLINKAGE.

lutchassemblyissecuredto

nsfercaseattherear oftheauxili-

utchwhichcanbeengagedordis-

oobtainfrontwheeldrivewhen

tedtothefrontend ofthedeclutch

rontdifferentialandcarrieras-

y(fig.189).Disconnectthe

embly(par.139),leavingcotterpin,

sleeveyokeondeclutchassembly.

dclevisyokebyremovingcotter

etoshift shaftdeclutchleverand

esixnutsand lockwasherswhich

sfercasestudsandremovedeclutch

ingcarriertocasegasket.

mbly.Cementnewdeclutch

tin positionovertransfercase

nneutralposition,liftdeclutchas-

ndinstallsix nutsandlockwashers.

keinpositionon shiftshaftdeclutch

otterpins. Connectpropellershaft

salsleeveyokeatfrontendof de-

andLinkage.

CHSHIFTERROD(fig.189).Remove

d clevisyokeatrearendof rear

eclutchlever.Thenremovecotter

evisyokeatfrontendof reardeclutch

rrod andremoverearrod.

TCHSHIFTERRODANDSHIFTROD

errodtunnelasinstructedin para-

cludestheremovalofthedeclutch

ifterhousingcoverplate.Remove

everto plate.Thendisconnecttwo

errodsfromauxiliarytransmission

ocotterand clevispinswhichhold

nuts,andlockwashers,which

frame,andslide bracketbackon

isfreeofauxiliarytransmission

chshifterrodwithfrontbracket

odthroughrearbracketbelowfuel

olsandLinkage.

TCHSHIFTERRODANDSHIFTROD

utchshifterrodwithfront shifterrod

dingrearendofrod throughrear

M


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RTRUCK-TRAILERM25

ltanksupport angle.Slidebracket

missionfrontshifterrodsand install

whichsecurebrackettoframe.

ionrearshifterrodstoauxiliary

installingtwo clevisandcotter

erto shiftinghousingcoverplate,

andcotterpin.Installshifterrod

130.

CHSHIFTERROD(fig.189).Install

rodtoshiftshaftdeclutchleverby

uxiliaryTransmissionPower

roughclevisyokeand lever.Then

hhold clevisyokeatfrontendof

declutchshifterrod.

XILIARYTRANSMISSION

KAGE.

gtoauxiliarytransmission

dtotheright sideoftheauxiliary

romtheauxiliarytransmissionis

tothe frontmountedwinchas-

everislocatedin thedriver'scom-

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CLUTCHUNIT

eatA shiftfork,securedtoashift

in.ieassemblyto obtainreverse,

AuxiliaryTransmission

90).

Removemuffler(par.93).Discon-

fassemblybyremovingcotterand

clevisyoketo shiftrodend.Lower

ARY

E-OFFASSEMBLY

SHIFTERRODAUXILIARYTRANSMISSION

ountingtoAuxiliaryTransmission

nectdriveshaftyokefrominter-

ocketheadsetscrewin yokefrom

ingsocketheadsetscrewin yoke.

mauxiliarytransmissioncaseby

kwashers.

OFF.Removesixnutsandlockwashers

iliarytransmissioncaseandpull

semblybackuntilintermediategear

tyoke,andremovepowertake-off

transmissioncasetosidemounting

mountingpowertake-offfillerblock

ioncase.

M


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RTRUCK-TRAILERM25

oAuxiliaryTransmission

90).

FF.Cementanewpowertake-off

caseandsimilargaskettoside

ositionfillerblockoverstudson

powertake-offassemblyintoposi-

earshaft intodriveshaftyoke,and

yonstuds.Secureassemblyto

untingtoAuxiliaryTransmission

sixnutsandlockwashers.Then

asherswhichholdbraceto auxiliary

shiftrodintopositionwithclevis

vistoendwithclevispin andcotter

windrive shaftyoke,securingyoke

muffler(par.93).

alandinstallationofcontrols

ph137.

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CLUTCHUNIT

XILIARYTRANSMISSION

KAGE.

toauxiliarytransmissionis

ansmission.It servestotransmit

emwinches.Atandemwinchuni-

owerfromthepowertake-offas-

s connectedbyachaintoadriven

embly.Powerappliedtoeither,or

hassembliesbythe powertake-off

nchcontrollevers.Theseleversare

ctedtothepowertake-offshiftrods

levisesateachend.

uxiliaryTransmission

nedinparagraph136.

AuxiliaryTransmission

nedinparagraph136.

age(fig.191).Fromunder-

inkpinswhichsecuretwolinksto

ountingtoauxiliarytransmission

removingtopcotterandlinkpins.

ingcontrolsandlinkagebetween

hassemblyisgiveninparagraph

kage(fig.191).Install two

odof topmountingtoauxiliary

uringlinkstorodwithlinkand

ks toleverwithanotherlinkand

allationofremainingcontrolsand

andtandemwinchassemblyisgiven

M


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K-TRAILERM25

M


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IVERSALJOINTASSEMBLIES

TA.

opellershaftanduniversal

vehicle.Onetransmitspowerfrom

iarytransmission.Anothertrans-

nsmissiontothe reardifferential

rear wheels.Thethirdtransmits

ytothefrontdifferentialandcarrier

ans-

ySpicer1701-1D1Xwith

ange..Spicer6-1-951

onflangeSpicer6-1-884

er

with

cer6-1-591

le

801-IXwith

onflangeSpicerK61/2-1-64

erK61/2-1-81

ontAxlePropellerShaft

NFLANGESATDIFFERENTIALAND

.Removeeightbolts,nuts,andlock

anionflangestogetheratdifferential

of thepropellershaft.Thenun-

pat rearofshaftandpull splined

ointyoke.

SALJOINT(fig.193).Prybacktwo

crewswhichholdtwobearing caps

emovetwocapscrewsfromeach

ngcaps.Pryrearyokeso oneuni-

beremovedfromyokeandjournal.

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RTRUCK-TRAILERM25

nto removesecondbearingassem-

withjournal attached.Thispro-

whichholdsrearyoketo declutch

utchshaftnutandpull universal

ntoAuxiliaryTransmission,

ntAssembly(fig.193).Remove

swhichsecureflangeat frontend

angeatmaintransmission(fig.

pjointyokefromcompanionflange

jointyokefromsleeveyokeat

ghtbolts,nuts,and lockwashers

pellershaft tocompanionflangeat

rassembly(fig.184).Removerear

veyoke.

arAxlePropellerShaftand

oveeightnutsandlockwashers

ketocompanionflangeatdrive

htbolts,nuts,and lockwashers

angeto companionflangeon

nsmission.Removeassembly,

ge yokefromcompanionflange.

Front AxlePropellerShaft

ALJOINT(fig.193).Slideuniversal"

ecureitwithdeclutchshaftnut,and

newgasketsontwouniversal

posingendsof journalwhichhas

ertslip jointyokewithjournalat-

e,withjournalthroughsleeve yoke

emblyintopositionover two

a universalbearingcapandbear-

ecuringcapand straptoyokewith

ibsaroundcapscrews.

SALJOINT(fig.193).Insertsplined

universalslipjointyokeandtighten

funiversaljointintoposition

tdifferentialandcarrierassembly

witheightbolts,nuts, andlock'

iontoAuxiliaryTransmis-

alJointAssembly(fig.193).In-

versaljointassemblyto companion

securingflangestogetherwitheight

ninsertslip jointyokeoffront

veyokeofrearuniversaljoint as-

companionflangeoffrontuniversal

M


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IVERSALJOINTASSEMBLIES

nstcompanionflangeatmaintrans-

stogetherwitheight bolts,nuts,

RearAxlePropeller Shaft

g.193).Liftpropellershaftinto

flangeyokeover boltswhichhold

rakedrum.Securerearuniversal-

angewitheightnuts andlock

ointcompanionflangetocompanion

olts, nuts,andlockwashers.

M


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K-TRAILERM25

M


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42

TA.

emblyconsistsofabanjo type

ntaxleshaftsand thedifferential

e housingatthecenter.Anaxle

ntialcarrierassemblyisconnected

s.Each axleshaftisconnectedat

whichishousedin atrunnionsocket

tingtype,designedsothe entire

edindependentoftheaxle shaft.

outerendofeachtrunnionsocket

securedtolowerarmsatthe bottom

chassemblyattachedtothetransfer

opellershaftto thedrivingflangeof

ssembly,whichinturn drivesthe

JUSTMENT.

ringtierod assemblyconsists

readedandclampedtoeachendof

olowerpin supportandcrosstube

ontaxlehousing.Whenthe steering

kletowhichthe left-handarmis

ymeansofthetierod, theright-

eturnedat thesametime.

eangleto whichthewheels

signedtomaintainpropersteering

ng,andscrubbingofthetires onthe

tthe tierod(fig.195).Eachend

handendhasacoarsethreadand the

tie rodendsscrewonthesethreads

rodendclampbolts.Inaddition,

uredbyalocknut whichisalso

Toe-inadjustmentsareusually

thetierod.

M


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RUCK-TRAILERM25

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hfrontwheelsin astraightahead

ndoffrontaxle housingandraise

6). Placetirescriberinfrontof the

nteroftiretread.Thenspin wheelto

ead(fig.196).Repeatoperationon

allowingwheelsandtiresto reston

toe-ingageatrearof frontwheels.

wwhichcontrolsverticalpositionof

nterupwarduntil itrestsagainst

.Loosentoe-ingagescaleindicator

agescale indicatoralonggageuntil

catorscrew.Carrytoe-ingage

ageso thatonepointeris atscribed

mentiscorrect,oppositepointerwill

edline.Thedistanceofpointerto

l/8inchandmustnotvary more

rwise,adjustmentisnecessary.

ovecotterpinandnutonright-hand

vewireandcap screwsthathold

etierodendball,andloosentie rod

doneturnfor each54-inchtoe-in

M


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K-TRAILERM25

M


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End

ndtierodend ontotieroddecreases

fftierod increasestoe-inby%inch.

cessaryistoogreat tobemadeat

disconnectleft-handtierodend.

d endoneturn.Tightenclamp

nuetheadjustmentatright-hand

been made,tightenclampbolts,

Testtoe-inagaintocheckaccuracy

movelockwireandsixcap

all coverontierodend.Remove

d:Thenremovecotterpinandcastel-

endball,placeajackunder tierod

Taplowerpin supportandcross

will moveupandoutofarm. Place

ivetierod enddownagainstarm,

ballbushingupwardso bushingand

odendreston arm,repeatprocedure

therendof tierod,andlift tierod

M


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RTRUCK-TRAILERM25

tierodonto twolowerpin

rttie rodendballat oneendoftie

astellatednutandcotterpin.Install

nstallshimsand cover.Securecover

checkforplayoftierod endball.If

recheck.Repeatthisprocedureas

ninstall threeremainingcapscrews

Lockcapscrewswithwire.Repeat

d. Checkfrontwheeltoe-inas

e.

eheavy,longwoodenblocks

frontendofthevehiclewhen

reremoved.Placeheavywooden

resinorder topreventvehiclefrom

has beenremoved.Supportcenter

wheelsandtires(par.175).

k(fig.194).Removethecotter

mentscrewinrearendof steering

chintoendofdrag linkandremove

ringretainer.Positionsteeringwheel

eringarmballstud, andliftdrag

movetwonutsandlockwashers

ontaxletoright frontspring.Re-

U-boltswhichholdfront axleto

emoveeightbolts,nuts,and

ompanionflangesatdifferentialas-

Lowerfrontaxlejackas lowas

wardso theyarefreeoffront axle

mblyonjacksoitwillnot fall,and

ehicle.

ahoisttolift frontaxleinto

ithU-boltholesin frontaxlehousing

ckup frontaxlesothathous-

pU-boltsat eachspringdown

ngandsecureeachboltwithlock

ushrearendof draglinkdown

springretainerinsteering drag

M


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ndspringintoendof draglink.Then

winendofdrag linkandtighten

tiallytakenup.Lockscrewbyinsert-

kandsloti nscrew.

leightbolts,nuts,and lock

anionflangesatdifferentialassembly.

l wheelsandtires(par.142).

rontbumperandremovejackfrom

twheels(par.142).

M


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K-TRAILERM25

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unit145

TAFORTANDEMUNIT.

icleis supportedbyatanden

edtothe rearaxletandemunitas-

he auxiliarytransmissiontoth<

BOLTS

iusRods

mbly.Twojackshaftdrivesprocket

ocketswhichareattachedtothi

axles bymeansofdrivechains

ationaryaxlehub.Thusthe driving

eelsoftherearaxle tandemunitas-

supportedateachendin abushing

M


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RTRUCK-TRAILERM25'

ocarrieraxleassembliesatfrontand

portoneendof eachsidestabilizer

heotherendona leafspring.The

nnerspringcasewhichhousesthe

hsidestabilizerbeam.Radiusrods

erateachend ofeachstationary

destabilizerbeamsbyradius'rodball

leto permitadjustingofthedrive

chof thetwostationaryaxlebeams

eamandtoa crossrodthrustplate

T

nDriveChain

erchainslocatedateachside

etherearwheels.Eachchainis

ketandthechain inturndrivesa

M


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rakedrumand wheelhub.Chains

whicharemountedontopofthe side

.Loosentworadiusrod ball

adiusrodadjustingwrenchtoloosen

intwoinchesofslackin chainat

slackinchainatoppositeend. Place

withends ofstraightedgeresting

Atapointmidwaybetweensprockets,

nand depresschainasfaraspos-

ROCKET

Chain

hainat bottom.Themeasurement

ack,oroneinchforchainsat the

or chainsattheoppositeends.Al-

t onetime.

clesothatmasterlinkis over

emovecotterpinfromendofmaster

ainfromsprockets.Removeremain-

Removeandwash"'rivechainsinhot

.

chaininchainvise,withvise jaws

M


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RTRUCK-TRAILERM25

Link

ns,with linktoberemovedin

otterpinsfromlink pinsanddrive

emoveadditionallinksinthesame

erouterand innerlinksorrollers

allnewparts,assemblingrollers

Connectinnerlinksandrollers by

hedin innerlinksandrollers.Place

nexttoinnerlinksoppositecotter

ositionthroughinnerlinksand

inkpins.Repeatprocedureifneces-

ks.

nin positionoverjackshaft

edrivesprocketsothatopen ends

axledrivesprocket.Tapmasterlink

aster linksandinnerlinkand roller.

tterpin.Installremainingdrive

M


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nLink

.

oilertank withfillercapis

m.Twoshut-offvalvesatthe bot-

foilthroughtwocoppertubes which

wochainsandjackshaftdrive

e.

urbolts,nuts,andlockwashers

onside beamstabilizerandliftoff

esidebeamstabilizerinsameway.

pandwashinterioroftankwith

untingbracketstomakecertainthey

noil tankintopositiononside

cureittobracketswithfour bolts,

mainingchainoiltankin same

FTS.

edriveshaftsareenclosedinthe

plinedonthe innerendtomesh

M


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RTRUCK-TRAILERM25

alsidegears.Theouterendsof the

to thejackshafthubstuds.The

fferentialsidegearsandinturn drive

whichdrivethechains.

tsfromturningbyinsertingarod

ndbetweensprocketteeth.Remove

ngetohubstuds.(Sevennutshave

enhavedowels,thedowelsandlock

Removelockwashersanddowels.

screwholesinaxleshaftflange

llaxleshaftstraightoutfrom jack-

gasket.Removeoppositeaxleshaft

CKWASHER

OilTank

movedowels,itmaybe necessary

llerscrews,andthentap shaftback

ycanbeliftedfromthe studs.

shaftflangegasketon flange

ingso thatsplinedendofshaft

plines.Install sevendowelsandlock

rsareusedalternatelyonhub studs)

ftaxleshafttohubstuds.Hold

ngarod inholeinside stabilizer

andtighteningnuts.Installoppo-

nner.

M


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SPROCKETS.

kshafthubassembliesrotate

singontworollerbearingsineach

venbythedifferentialside gears,

ubs,anddrivethe hubs.Twodrive

bystuds andnuts.Theinnerhub

ar stationaryaxledrivesprocket

the chaintothefrontstationary

TLOCKWASHER

afHub

CKETSASSEMBLIES.Removetwo

deofvehiclefromwhichjackshaft

Removejackshaftaxleshaft(par.

inglocknutfromjackshafttube

emovejackshaftbearinglock

ustingnutwrenchto removejack-

emoveshimandlift offhubwith

d.Removeremaininghubinsame

M


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RTRUCK-TRAILERM25

KETSFROMHUB.Remove14nuts

prockettostudsonhub. Tap

ketisdrivenoffhub. Remove14

studs onhubanddrivestuds back

driven back,removesprocketstud

ndsprocketteethuntilsprocketis

cketsfromotherhubinsame

NHUBS.Firstscrewathreadedsleeve

sprocketstuds.Alineeachsleeve

vetoBrokeCylinderHose

nstallsleevepins.Tap studspart

ithoppositesideofhub.Place

erhubandtaparoundsprocket

nagainst,andinalinementwith,

oles insprocketuntilstudsarein

esprocketstostudswith nuts.Drive

bover studs.Secureoutersprocket

allsprocketsonotherhubin same

CKETSASSEMBLIES.Lifthuband

sitionoverjackshafttube.Install

gnut.Adjustwheelbearings(par.

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lockwasherandlocknut, using

ljackshaftaxleshaft(par.148).

146).Installremaininghuband

anner.

AL.

AxlePropellerShaft.Refer

vetoFrontBrakeCylinder

mconnectoratbottomandrearof

TUDSNUT(UNDERWRENCH)

ht-handJackshaftTrunnion

ckwasherwhichsecurehosesup-

necteachhoseatits rearconnector.

hoseconnectedtoitsbrakecylinder

RearRod.Removecotterpin

rearendofdriveshaft brakerear

isfrom driveshaftbrakelonglever.

vetoRearBrakeCylinder

rearbrakehosefromconnectorat

removebolts,nuts,andlock

upportbracketstoframe.Disconnect

f way.

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K-TRAILERM25

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ftTrunnionfromDifferential

tednut,andboltwhichsecure

trear oftrunnion.

ndJackshaftTrunnionCaps

sandlockwasherswhichsecure

onstuds.Disconnectleft-hand

nit.Blockfrontwheelsatfront

woodenblockatrearofvehicle

trunnionsare freeofjackshaft

munit isentirelyfreeofvehicle.

blocksandremovehydraulicjack

rofvehicle.Rollrear axletandem

LATION.

it(fig.209).Positionrear axle

ewith rearofvehicle.Pushas-

hicle,withjackshafttrunnioncaps

onson rearofframe.

ndemUnit.Removewooden

ndemunit.Lowervehiclewithjack

rough thejackshafttrunnioncaps.

pstoTrunnions(fig.208).

rswhichsecureeachtrunnioncapto

whichsecuresleft-handtrunnion

ifferentialcaseandinstall castel-

oBrakeCylinderHose(rear)

topositionwith hosesupport

kettoframewithtwobolts, nuts,

dhoseinsamemanner.

arRod.Liftyokeclevisatrear

intopositionondrive shaftbrake

withclevispinand cotterpin.

oBrakeCylinderFrontHose

portbracketinpositionon frame

olt,nut,and lockwasher.Ina

dhose.

AxlePropellerShaft.See

M


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RTRUCK-TRAILERM25

52

er166

TAFORSYSTEM,

hepurposeofthecompressedair

o operatethebrakesonthefour

brakesonthesemitrailer.Theair

ourceofcompressedairsupplyfor

eratingtheairhorn.The airbrake

sor,twoairr eservoirs,agovernor,

oot-operatedvalve,anairpressure

e,stoplightair switch,low-pressure

rlines andcheckvalvestoconnect

ureonthe foot-operatedbrake

owfromtheair reservoirstotheair

heckvalvestothebrakecylinders,

andexpandthebrakeshoesagainst

rakeson thetractorandsemi-

thisvalvewhichislocatedonthe

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RTRUCK-TRAILERM25

hand-operatedbrakevalveon

mnoperatesthebrakesonthe left

gthe leverofthisvalveto theright

reservoirstotheairmanifold,then

ebrakecylinderson theleftrear

eslackadjustersandexpandsthe

onthe leftrearwheels.

ehand-operatedbrakevalveon

umnoperatesthebrakesonthe right

rationis thesameasleftrear

hehand-operatedbrakevalve

mnoperatesthebrakesonthesemi-

onofsemitrailerwheelbrakesare

manual.

house3UE12VW

ouse220938

17869

Westinghouse215186

use221393

use212322

17866

e221192

stinghouse216231

e221303

e215748

se217383

use215105

nghouse220306

ompressoris drivenbythe

airnecessarytooperatethe brake

deoftheengine andisathree-

hecoolingsystem,andlubricated

ompressoris ofthereciprocating

nuouslywhiletheengineisrunning,

governoris cutin.

llairandwaterlineconnectionsand

ouplingnuts.Checkclearanceof

en0.010and0.015i nch.

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IPE

whichsecureseachadjustingscrew

n adjustingscrewwhileholding

square-headendofscrewandun-

anceisobtained,tightennutwhile

learanceaftertighteningnuttobe

ngedduringtighteningoperation.

thatholdairpipeto airduct

irlinestoair governorandtoair

rewthreenutsandbolts whichhold

lecouplingthermoiddisk.Disconnect

soranddisconnectwaterinletpipe

afttotherear inordertoobtain

lockwashersthatholdaircom-

se.Removeaircompressorwithits

en removeaircompressorbracket

compressorbracketgasket.

ketandwaterinlet pipeinposi-

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RUCK-TRAILERM25

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sewithfournutsandlockwashers.

mpressorandconnectwaterinlet

boltsandnutsthathold flexible

ngthermoiddisk.Connectairlines

oir.Installairpipe toairductand

etwocylindricalair reservoirs

connectedtogetherbypipesand

vehicleframebyU-bolts.Each

or

cockforthepurposeofdraining

eright-handreservoirhasasafety

chair pressureisbuiltup dueto

sanddrainwaterfromreser-

alves;theymustpopopenat 100

tholdplateoverair reservoirs

lines(fig.210).Removeclamp

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RTRUCK-TRAILERM25

nspreadclampsandremovereser-

nclampandfasten withbolt,

lines(fig.210).Install plateover

rbolts.

catedontheleft sideofthe

ndis themeansoflimitingthe

ir compressorproduces.Whenthe

ches100to105pounds,thegovernor

valvestoopen,stoppingfurthercom-

essureisreachedinthe airreservoirs

compressorunloadervalvesand

ressurerange(85to105 lb)

moveshimsfromunderneathvalve

e notified.However,ifpressure

esettingmayberaisedor loweredby

eningadjustingscrewnut.Adjust

ew;toraise thesetpressure,turn

werthesetpressure,turnadjusting

adjustingscrewnutwhileholding

irlinesatgovernor.Remove

hathold governortodashandlift

ndashand fastenwithtwo

nnectthetwoairlines togovernor.

slocatedontop oftheright

systemagainstbuildingupexcessive

inexcessof150 poundsisallowed

andadjustthesetpressureby

ockwisetoincreaseset pressureor

htenlocknut.

eeonrightairreservoir.

onrightairreservoir.

VALVE.

kepedalon thefoot-operated

ntherear wheelsofthetractorand

catedonthecabfloorat thedriver's

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IRPRESSURE)

FOLD)

keValveAssembly

inandbrakepedal.Release

ebetweenrollerandbuttonwhich

,adjustfreetravelofpedal.Loosen

counterclockwisetodecrease,and

el.Tightenlocknut.

nesatvalve(fig.210).Remove

sthathold valvetofloorboardand

mblyonfloorboardandfasten

shers.Connectairlines (fig.210).

EVALVES.

peratedbrakevalvesoperate

r,leftsideof tractor,andonsemi-

redtothe steeringcolumnbelow

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RTRUCK-TRAILERM25

andlockwashersthathold

nnectinletandoutletairlines at

valves.

eeringcolumnandsecurethem

thathold valvestosteeringcolumn.

toeachvalve(fig.210).

.

kvalvesareusedtopreventloss

exhaustofthebrakevalveswhich

vesaresecuredto thechassisframe

akeValve

fromfittings(fig.210).Remove

d valvetoframeandliftoff valve.

meandfastenwith bolt,nut,

stoinlet andoutletfittingsonvalve

valveprotectstheairsystem

ncylinecut-outcockisleftopen.

doutletairlinesfromvalve

ut,andlockwasherthathold valve

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meandfastenwith bolt,nut,

doutletairlines tovalvefittings.

veis intheleftside toolbox

servoirandthe governor.Itisused

gtiresoranyotherpurpose desired.

doutletairlinesfromvalve

olts,nuts,andlockwashersthat

tvalve.

ackAdjuster,andConnections

lbox andfastenwithtwobolts,

nletandoutletair linestovalve

indersarelocatedonthe rear

operatethebrakesontherear

eenergyofcompressedairintothe

eratetheslackadjustersandbrake

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RTRUCK-TRAILERM25

brakecylinderpushrods

thoutthebrakesdragging.Raisethe

fground.Turntheadjustingscrew

cylinderpushrodtravelisas short

agon thebrakewhenthewheelis

a partofeachbrakeassembly

akestocompensateforbrakelining

ureto atleast80poundsand

g brakeadjustment.Adjustbrakes

usterbyremovingcotterpin

wandtwowashersthat holdadjuster

terfromcamshaft.

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brakecamshaftandfasten

nectadjustertobrakecylinderwith

H.

switchcontrolstheoperation

tthe rearofthechassisframe.

esfromterminalonswitch,then

itting onswitch(fig.210).Remove

hathold switchtoframeand

ameandfastenwith twobolts,

hetwoairlines totheconnection

ectricwirestoswitchterminals.

CATOR.

airindicatoroperatesthelow-

r thatairpressurehasfallen below

ounds.

romfittings(fig.210).Remove

d wirestoindicator.Removetwo

holdindicatorto dashandremove

ndashandfasten withtwo

alltwoelectricwiresand fasten

onnectairline toindicatorinlet

CATORBUZZER.

airindicatorbuzzeristhe

theairpressurehasfallen below

operatedelectricallybythelow-

atedonthefrontsideof thedash.

edscrewwhichholdscoverto

randremovecover.Removecover

coverscrewfromcover.Then

woterminalscrewnuts,lockwashers,

sureairindicatorbuzzerterminals.

tolow-pressureindicatorandthe

emovetwobolts,nuts,plainwashers,

-pressureairindicatorbuzzerto

ashand fastenwithtwobolts,

hers.Installtwowireson buzzer

thtwo terminalscrewnuts,plain

lcovergasket,theninstallthecover

coverscrew.Installcoverand

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RUCK-TRAILERM25

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hoseareusedtocarrythe com-

oseis usedwheremovementofthe

metalairline.

8).Newpipes mustbecutata

pipe.Slidenut andsleeveonpipe.

Holdpipein bodyandtightennut

seat rightangletooutsidewallof

se,theninstallsleeveaboutone inch

nnections—Rear

erend ofhoseguideinconnector.

sket.Installhoseinconnector.Slide

andtightennutuntil itissnug.

NECTIONS.

.The serviceandemergency

rontand attherearof thetractor.

rto thesemitrailerattherear

nothervehicleatthefront.Each

lveandacouplingwhichsecures

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RTRUCK-TRAILERM25

nection.Removeconnection

mycoupling,coupling,pipenipple,

washer,couplingnut,andpipenipple

onnection(fig.220).Install

,serviceplate,connector,elbow,

ycoupling.Tightenfittingssecurely.

Connection.Removeconnec-

:dummycoupling,coupling,pipe

R

CE

nnections—Front

encyplate,connectorwasher,coupling

ipple,checkvalve,andpipenipple

yConnection(fig.220).In-

enipple,reducer,shut-offcock,

emergencyplate,connector,elbow,

ycoupling.Tightenallfittings

ergencyConnections(fig.

ngorder:dummycoupling,cou-

gencyplate,connectorwasher,cou-

andpipenipple.

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RTRUCK-TRAILERM25

EmergencyConnections

ucer,shut-offcock,couplingnut,

rgencyplate,connector,coupling,

ssecurely.

ctsasa junctionboxfordis-

thevariousairunits.Themanifold

chedthroughtheradiatordoor.

AKE

viceBrakes

nesfrominletand outletfittings.

washersthatholdmanifoldto

ndashandfastenwith two

nnectsixairlines tomanifoldinlet

ocatedonthe chassisframe

hisvalveis connectedbyairlines

ndwheelcylinders.Itis operated

licationandreleaseofwheelbrakes.

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nesfrominletand outletfittings

andlockwashersthatholdvalve

meandfastenwith twobolts,

hesixairlines tothevalveinlet

ADJUSTERRAPD7t>a60

eBrakeShoes

S.

efourbrake shoeassemblies

mbly,oneforeachofthefour sta-

blies.Eachbrakeshoeassembly

iderby meansoftwobrakeshoe

hbrakeshoeto thespider.Brake

shoes andthebrakeshoesare

kedrumsbymeansofthe service

nstthebrakeshoerollers.Thecam

whichissecuredtothecamshaft.

esofeachbrakeshoeassemblyare

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RTRUCK-TRAILERM25

erollersprings, whicharesecured

ts,fourflatwashers,andtwocastel-

mentismadebymeansof the

achair brakeslackadjuster.

eshoesuntil theclearance,meas-

theliningandbrakedrum,is 0.005

chattheheel (bottom)ofeach

stingwormclockwisetotighten

erclockwisetoloosenthem.

eBrakeRolierSprings

M.Removethewheelsfromhuband

areto beremoved,followingthe

5.Thenremovethehuband drum

regiveninparagraph176.

SSEMBLY.Removethecapscrew

eanchorpinlockto thebrake

ass drifttodriveout anchorpin,

bricationfitting.Do notremove

unchmaydamagefittingopening

shoeanddriveout theotheranchor

mbly.

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RTRUCK-TRAILERM25

NDLINKAGE

TA.

ftbrakelever,locatedinthe

atesbrakeshoeswhichpressagainst

drum isboltedbetweentwouni-

TLOCKNUTRAPD76915

veShaftBrokeShoes

catedattherearof thetransfercase.

aluse acrosslinkagewhichis

operatesthebrakeextendsfromthe

hebrake shoeactuatingcam.

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NDLINKAGE

cedureforparkingbrakelinkage

ncebetweendriveshaftbrakeshoes

inch.Brakeshoesareadjustedby

orheeladjustmentand bymeans

t.

Removetherearcotterpinand

rdcastellatednut,whichis locked

CTUATINGCAMBRAKEROD

SHAFTUPPER

RAKEBRACKETBRAKESHOERAPD76980

veShaftBrakeRockerfromT-bracket

n,until*/g -inchclearanceatthe

ed.Thenremovethelowerlocknut

pandloweradjustingnutsuntil

e ofshoes.

27).

LINGPLATEANDCAMPIN.Remove

ingfourcapscrewsuntilclipswhich

d andliftplatefromframe.From

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RTRUCK-TRAILERM25

erpinandcampinwhichsecure

odtoactuatingcam.

T-BRACKET.Removetwobolts,nuts,

brackettothepropellershaftbrake

andcamtowardleftsideofframe

n whichsecurerockertoT-bracket

ovelocknut,adjustingnut,and

09).Drop lowerbrakeshoeand

kagerockerwashersandT-bracket

Nextremovecotterpinandcastel-

orpinandremovelowerbrakeshoe

utandlinkagerockerwasherfrom

tspringandwashers.Removeeye-

rbrakeshoe.

.227).

Installeyebolt,withpartsattached,

nd installlinkagerockerwasher,

rinendof eyebolt.Securethemin

eendoftheeyebolt.Thenposition

d brakedrumandplacelower

astellatednut onfrontendof

orpin withacotterpin.

eninstalloneyebolt.inordernamed,

sher,lowereyeboltspring,second

tingnut,andlocknut.

arofT-bracketswungtowardleft

dcotterpinwhichsecurerocker

ehiclesecureT-brackettodrive

,nuts,andlockwashers.Connect

allingcampin andcotterpinwhich

LINGPLATE.Installdummycoupling

mesidechannelsandtightening

es(subpar.aabove).

keshoesateyeboltadjusting

washerswhichsecureuniversal

.Removeyoke,tapboltsthrough

rumfrombrakeshoes.

druminto positioninside

yokeinpositionover drum.Install

ionflangethroughtheflangeand

drumandyokebyinstalling nuts

brakeshoes(subpar.a above).

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DLINKAGE

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RTRUCK-TRAILERM25

.

rakecrossshaftlinkage(par.

rpinswhichholdbrake rodto

uatingcamandremoverod.

brakecrossshaftlinkage(par.

etocrossshaftandbrakeshoeactu-

ns.Adjustbrake asinstructedin

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ARINGS,ANDTIRES

wheelsareusedonthe frontwheels

ntherearwheels.Thewheelsare

arrythetireswhicharemountedon

ithatire retainingring.

GRING)FRONTFRONTHUB

EEL/WHEELSTUD

LNUT(R.I

WheelandTireAssembly

eeltobe removeduntiltire

nuts,usingspecialwheeland re-

e.Rockwheeloffwheelstuds and

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RTRUCK-TRAILERM25

neside.Removetireassembly(par.

yin placeandrockwheelonto

tsand tightenthemsecurely.Lower

RINGS.

ubassembliestowhichthefront

twheelbearingconesandare

AxleDriveFlange

of awheelbearingadjustingnut,

heelandhubassembliesonthe

hendofeachstationarycarrier

vicebrakedrumandthe stationary

hedrum.Twoofthefour huband

tweenthesprocketanddrum.Each

eelbearingswhicharesupported

eelsarebolted tohubstuds.

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ARINGS,ANDTIRES

m941

m938

gcupTim 932

im64450

im62400

m52638

m64700

WheelBearingCone

earofgroundwitha jackand

washerswhichholddriveflange

wheelbearingnut socketwrench

inglocknutandlockwasher.

nutuntilwheelbinds whenturned.

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ARINGS,ANDTIRES

HUB,INNERBEARINGCONEAND

huboutwardand offoffrontaxle

ringconeandoilsealfrom spindle.

s outofhub.

sindry-cleaningsolventandre-

aringswithcompressedair,being

rollers topreventthemfromspin-

rscratches,pitting,orchipped

parts.

naryAxleHubandDrumAssembly

Bearings.

TERBEARINGCUPS.Drivecupsinto

nceofcupssothattheywillnot cock.

entdamagingcups.

GSEALANDCONEANDHUB(fig.230).

l onspindleandinstallinner wheel

thubintoposition<jnspindle.

BEARINGCONEANDBEARINGNUTS

ingconeinposition inhubandin-

usingspecialwheelbearingnut

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RTRUCK-TRAILERM25

hubbindswhenturned.Revolve

ll bearingsurfacesareincontact.

stingnutjust enoughtopermithub

aringadjustingnutlockwasherand

bearingadjustingnut locknut.

HAFTDRIVEFLANGE(fig.229).

ngegasketoverhubstuds.Then

rstuds andinstallthe12 dowels,

nstallfrontaxleshaft driveflange

versaljointassemblyouterraceand

te witheightcapscrewsandlock

S.Followtheproceduregivenin

b,BearingsandOilSeal.

ANDWHEELS.Removedrivechain

ubwhichisto beremoved,follow-

graph146.Removewheelsfrom

eninparagraph175.

NGNUTS.Removesixcapscrewsand

aryaxlehubcaptohub,and remove

gnutwrenchandremovewheel

movelockwasherandwheelbear-

nch(fig. 231).

M.Loosenadjustingnutonslack

eofbrakeshoes againstbrake

hub anddrumandusea hoistto

fofaxle.Pullhuband drumassembly

erwheelbearingconewillcomeloose

assemblyfromaxle andlowerit

lbearingfromstationarycarrier

ANDBEARINGCUPS(fig.233).Re-

asherswhichsecurewheelbearing

ewiper.Thenpositionapry bar

ainstoilsealand drivearoundcir-

kedrumuntilit isdrivenfromthe

usedoilseal.Drive innerandouter

efulnotto cockcupswhiledriving

ANDDRIVESPROCKETASSEMBLY.

apscrewswhichsecuredrumto

ketassembly.

Hub,BearingsandOilSeal.

ANDOILSEAL.Drivebearingcups

lto taparoundcircumferenceof

agingthem.Driveanewoil sealinto

ubinsamemanner.Installwheel

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ARINGS,ANDTIRES

naryAxleHubOilSeal

andsecureitto hubwitheightcap

ANDDRIVESPROCKETASSEMBLY.

yinpositiononhub andsecureit

ersandnuts.

MASSEMBLY.Placeinnerbearingcone

nslingaroundhubanddrum anduse

axle,withbrakedrumin position

assemblyoverbrakeshoes,make

adjusterhasbeenloosenedtopre-

yinto brakedrum.Theninstall

f stationarycarrieraxleandinto

NGNUTSANDADJUSTBEARINGS.In-

on axleandtightensecurelywith

ckwashernexttonut, notingits

ckupnutadistanceequivalentto

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ERTRUCK-TRAILERM25

ainingRing

alllockwasherandinstalladjusting

ta newgaskettostationaryaxle

etonhub,securingcap withsix

ND WHEELS.Installdrivechains

assemblies(par.175).

eofthe combatordeserttype

beswhichareretainedin thecasing

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ARINGS,ANDTIRES

beAssembly

INE

flationHose

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RTRUCK-TRAILERM25

reassembly(par.176).Remove

wheelandpryoffring.Push wheel

g andremovefromtirecasing.

andtubesforcutsandbruises.

portdamagedtirestohigher

ecasing.Theninstallclamp

el incasingandsecurewithtire

re assemblyonvehicle(par.176).

a toolboxjustto therearof

eitemsthatis carriedinthisbox

hichisa partoftheair systemis

olbox.Tires ofthetractororsemi-

gthe tireinflationhosetothe

valveleverontheair couplingto

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RBERS

HACKLES,

wosemiellipticleafspringsare

efrontof thevehiclebymeansof

anddirectlytothebracketsatthe

aresecuredtothefront axlehousing

dleateachspring.Theupper endof

gerbracketby ashackleboltand

s securedtothelowerendofthe

rontshackleboltsecuresthe spring

afrontspringeyeand bushingwhich

spring leaves.

STELLATED

ADJUSTINGSPACERNUT

NCHWASHERCOTTERPIN

Shackles

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K-TRAILERM25

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RBERS

ig.237).

EHICLE.Usingwoodenblocksand

of frameuntilweightofvehicle

minatebindingatspringshackles.

enremovecotterpinanduseradius

vecastellatednutfromlower

iveboltfromspringand bushing.

similarmanner,removeupper

ndinsideshackles.

(fig.237).Installouter

installa spacerwasheranddrive

.Asboltcomesout backofbracket,

kleandcastellatednut.Tighten

ustingwrenchandlocknut and

rmanner,installlower frontspring

dspringbushing.Lowervehicleto

dblocks.

8).

EMOVEWHEEL.Blockrearwheelsso

backward.Useahoist orwooden

kup frontendofframe.Place

frameandremovejackor hoist.

hevehiclefrom whichspringisto

munderaxle housingafterwheel

.Disconnectshockabsorberarm

otterpinand castellatednutfrom

andboltfreeofsaddle.Remove

securetwoU-boltsaroundspring

xlehousing.Thenremovecotterpin

enchtoremovecastellatednutfrom

ddriveboltfrombracketandspring.

similarmanner,removelower

g.Bymeansofhydraulicjack,lower

U-boltscanberemoved.Remove

g.Removeotherspringinsame

38).

pfrontendofframeand positiona

usingonside wherespringistobe

ition onfrontaxlehousing.Install

ersaddle,droppingU-bolts over

singbolt holes.

WERVEHICLE.Bymeansofhydraulic

pring untilfrontbracketandrear

thbushingsin endsofspring.Insert

ushingateachendofspring.Then

oltthroughshacklesand bushingat

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RTRUCK-TRAILERM25

zerSprings

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RBERS

odadjustingwrenchto install

tinplace.Locknutandbolt with

nner,installshackleboltatfront

springinsamemanner.

NGS.

.

zerspringsconsistoftwocoilsprings,

aninnerspring caseintherearend

nner springcaserestsonthe end

totheend ofthesidestabilizer

ckAbsorber

ase aresecuredinthespringopen-

erbeamby aninnerspringcaseend

ap.

r

DEVICE.Inordertoliftinner and

ng case,itisnecessarytolift the

worearlockpinsbyfirst removing

pin.Useahoistand ropeslingto

gdeviceupwardaboutafoot;if a

n liftit,andthe verticallifting

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RTRUCK-TRAILERM25

.Placeahydraulicjackonwooden

amesufficientlyforallpressureof

lizerspringcap.

Removefournutsandlockwashers

ofsidestabilizerbeamandremove

ng caseendguideplateandremove

E:// left-handstabilizersprings

lts,nuts,and lockwasherswhich

erbeam,and removechainguard

gcap.

LY

Absorber

nstallouterandinnercoilsprings

nginnercaseandguideplate ontop

ndstabilizerspringcap.Ifleft-hand

lchainguard withtwostrapsover

amandsecureguardto beamwith

Securecaptostuds withfournuts

NGDEVICEANDLOWERFRAME.

secureitin placebyinstallingrear

h cotterpins.Lowerrearofframe

cks.

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RTRUCK-TRAILERM25

RAULICSYSTEM

81

3

andconnections185

TAFORSYSTEM.

ringsystemconsistsofthe

sahydrauliccylinderwithpiston

gearhousing,anda hydraulic

mofthe steeringgearhousing.The

onsistsofa hydraulicoilreservoir,

nginecover,andconnectedbyoil

on theleftsideof theengineand

in.Thehydraulicpumpdelivers

rauliccontrolvalve.Abypassispro-

snotrequiredatthe controlvalve,

eelisturnedto theright,orthe left,

operationautomaticallyandisof

turning thevehicle.Thisisaccom-

pressurefromthecontrolvalvetothe

testhepistonwhichappliespressure

evereffortat thesteeringwheelis

sbalancedandthehydraulicsystem

into bebypassedatthepump.

Cylinder:

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RAULICSYSTEM

raulicpumpisa rotortype

ftheengine.Itis inoperationduring

ndisdrivenfromthe governordrive

onthe endofthepumpdrive shaft.

hereservoiranddelivers theoil

ine tothevalve.

BLY

Y

gSystem—SchematicView

emovecarburetortoairduct

exibleinletandoutlethosefrom

plingnutsandboltswhichhold

nge.Removefourcapscrewsandlock

mptobracketonuppercrankcase

crankcase.

percrankcaseandfastenwith

.Connectflexiblecouplingtoflexible

woboltsand nuts.Connecthydrau-

tallcarburetortoairductpipe. Bleed

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RTRUCK-TRAILERM25

mbly

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RAULICSYSTEM

RANDPISTON.

ringhydrauliccylinderisa

redtothe topofthesteeringgear

drauliccontrolvalvetothetop and

draulicsteeringpistonoperates

Disconnectoillineatcontrolvalve

thesteeringgearhousinganddrain

illinesat topandbottomofhy-

G-

EARHOUSINGCOVER.Removecab

capscrewsand lockwashers,and

wobolts.Removefivecapscrews

ringgearhousingcoverandremove

washerswhichholdclutchpedal

LFLOORPLATE.Removefivecap

oldclutchpedalfloorplateto floor.

olddimmerswitchinplace.Lift

dal.

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RTRUCK-TRAILERM25

movesixcapscrewsandlockwashers

steeringgearhousingandpull

ecotterpinandnutwhichhold

vepistonnutwasherandpiston

LINDER.Installpistononpistonrod,

d securepistontorodwithnut

erpiston,push cylinderdowncare-

andsecurewith sixscrews.

R

ISTONASSEMBLY

cCylinderRemoved

nectoillinesattop andbottomof

controlvalvewhichwasdiscon-

al.

SERVOIRANDBLEED.Fillhydraulic

systemasinstructedinparagraph

LFLOORPLATE.Installfloorplate

or.Install dimmerswitchonfloor

ws.Securefloorplateto cabfloor

hers.

RHOUSINGCOVER.Installclutch

urewithbolt,nut,andlockwasher.

M


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RAULICSYSTEM

erandsecurewith fivecapscrews

ornerfiller andsecurewithfive

twonutsandlock washersontwo

ALVE.

ntrolvalveisaspring-loaded,

uredto thebottomofthesteering

ctedtothehydraulicpumpat its

hydrauliccylinderat theoutlet


nframeand removecover.Dis-

ASSEMBLY

alveRemoved

gs.Removecapscrewsandlock

trolvalvecaponsteeringvalve

esetscrewfromsteeringcontrol

mshaftvalve,lowerthrustwasher,

ormshaft.Pullsteering control

eeringcontrolvalveassembly

er,lowerbearing,camshaftlower

M


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RTRUCK-TRAILERM25

ft.Adjustbearings(par.189).In-

,andtheninstallsteeringcontrol

ehousing,andsecurewithcap

ctoillinestovalvefittingsand bleed

gearbottomcoveron frameand

washers.

RVOIR,OILLINES,AND

raulicoilreservoiris located

overandis accessibleforfillingby

rvoir

heenginetopcoverandthenremov-

ervoir.Theoillinesandoil hose'

pumptothehydrauliccontrolvalve,

auliccylinder.Theoillinesarecon-

son theendsoftheflared tubes,

ittingsontheend oftherubberhose.

ervoir.Removeengineleftside

sefromreservoir.Removefourbolts,

vereservoir.

M


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RAULICSYSTEM

eservoir.Installreservoirand

ashers.Connecttwooil hoseto

over.

rwithoil,thenturn steering

erposition.Openbleedervalveto

then turnsteeringwheeltotheleft

bleedervalve.Stopturningthewheel

reefromair,andthenclose valve.

theupperbleedholeopen andthe

NOTE:Duringbleedingprocess

gWheelButton

to covertheportsatall times.At

ion,fillreservoirtoitsproper level.

lLinesand Hose.Remove

enuts andeachendoflinefrom

.Removehoseinthe samemanner.

elislocatedatthe topofthe

edto thesteeringgearcamshaft.

nterofsteeringwheelbypress-

urn.Removethreescrewsthathold

er.Removesteeringwheelnutand

arcamshaft.

M


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RTRUCK-TRAILERM?5

eeloncamshaftandfasten

uttonretainerand fastenwiththree

gdownandturning about%turn.

ssecuredto thelevershaftof

esteeringgearto thedraglink,in

fthe geartothedraglink, and

INKSPRING

eringDragLink

monlevershaft.Then remove

raglinktoarm,and removedrag

ckwasherwhichholdarm .onto

t.CAUTION:Donothammerarm

nstendoflevershaft.Use lightblows

ective.

monlever shaftsothatmarks

tall lockwasherandnut,and

onarm andsecurewithcotterpin.

M


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RAULICSYSTEM

hemeansofconnectingthe

totheleftfront wheelsteering

edtotheright frontwheelsteering

fatubewith ballsocketsateach

yaspringand threadedplug.

ndplug,ateachendof drag

ngarmandsteeringknuckle.

instraight-aheadpositionand

andsteeringknuckle.Screwplug

ecurewithcotterpin.

NTS.

aladjustmentsonthis steering

entonthestud-rollerbearing unit

mentsarethe adjustmentofthe

mshaft,andtheadjustmentofthe

backlash.Ifanadjustmentis

gunit inthelevershaft,report

henmakingadjustmentsoutlined

eeringgearof allloadbydiscon-

ftfrontwheelsteeringknuckle(par.

earingsonCamshaft.Re-

apbyremovingsixcap screwsand

flangetoolbyusing a3^-inchflat

ntrolvalvecapas atemplate,drill

e centeroftheflatsteel stocklarge

and bearing.Ifsteelstockisnot

outofa sparesteeringcontrolvalve

pointapproximately%inchfrom

.Loosenthehousingsidecover

reeofthe capscrewswhichheldthe

eandinstall theadjustingflange

againstthe valvebody,andsecure

setscrewfromadjustingnut.

noplayinthe upperorlowerbear-

ngthesteeringwheelwith thethumb

operceptibledragfelt inthesteer-

ntheadjustingnut andtestagain.

made,installsetscrewin adjust-

getool,and installthesteering

ontrolvalvehousing.Securethe

ews.

M


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RTRUCK-TRAILERM25

CamGroovefor Backlash.

n.Tightenthehousingside coverad-

eryslightdragisfelt throughmid-

gwheelslowlyfromone extreme

ng theadjustingscrew,tightenlock

eringwheel.Adjustmentiscorrect

dposition.Connectdraglinkto left

.188).

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bly193

94

TA.

farmorplate whichiswelded

sframe.Thecabprovidesarmor

ne,fuel,andenginecoolingsystems.

ofstraight channelironcon-

rails withcrossmembersriveted

ssetplates.

isboltedto bumpermounting

me.Frontblackoutlightsaresup-

ntedonthebackof thebumper.

uts,andlockwasherswhich

obumper,andremovelightsand

washer,andclampwhichhold

of bumper.Frombothsidesof

andlockwasherswhichholdbumper

,andtwobolts,nuts, andlock

nerbumpermountingangles.Then,

veonebolt,nut, andlockwasher,

ront endofframe-sidechannels

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shers.Securepintlehookstirrup

stallingfourbolts,nuts,and lock

UTTONASSEMBLY.

nassemblyforsignaling is

theairsystemand islocatedinside

curedtocab.Thehornbutton is

driver'sright.

nlocknutat rearofhornand

ntildesiredtoneisobtained,then

y

ectairlinefromelbowat rear


and removehorn.

hornoncrossmemberand

ckwashers.Connectairline to

mbly.Reachinsideradiator

airlinesfromfittings inhornbutton

vetwobolts,nuts,and lockwashers

diatorsidecover,andremove

embly.Installhornbutton

ndfastenwithtwo bolts,nuts,and

estofittingsin hornbuttonvalve

M


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RTRUCK-TRAILERM25

DSEATFRAMES.

atsinthe cab:gunner'sseat,

at,anddriver'sseat.Twoofthe

wallofthecabandtwo aresecured

river'sseatis attheleftfront

ander'sseatisdirectlyacrossthecab

nner'sseatissecuredto thecenter

ghtrearcrewseat framehousesthe

framecontainstoolandparts

isoperatedbya lever.Pushing

canbeloweredforuse.Thegunner's

able.

mbly

ewSeatCushionsandBacks.

liftingup andoffretainers

,thenliftseatcushionsoffseatframe.

cksonretainersandtheninstall

ewSeatFrames.

s,andlockwasherswhichhold

towheelhousings.

mesandsecuretocaborwheelhous-

hers.

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TCREWSEATBACK

eatBack

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ERTRUCK-TRAILERM25

iver'sSeat,Commander's

atshave theseatcushionandback

andlockwasherswhich secure

oveseatassembly.

tassemblyandsecure towheel

washers.

nner'sSeat.

atis fastenedtoabracketwhichis

ovedbytakingoutfour capscrews

ton bracketandsecurewithfour

hieldWiper

WASHER^WIPERMOTORASSEMBLY

oors,radiator,andwindshield

esare weldedtotheshuttersand

andremovedoor.

ve hingepinintoplace.

removedbypullingwipermotor

thenlooseningthumbscrewsthat

indshieldsin racksonsideofcab.

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eldsfromracksonsideofcab,

humbscrews.Connectwipermotors

ldwipersareelectricallyoper-

teither,orboth,can beturnedoff,

thewindshieldframe.

dredwiresfromwipermotor.

rmonmotorshaftand pullwiper

aft.Removerubbergrommetfrom

wonuts,lockwashers,internal-

ocondenserfromwiperstuds.Pull

mwindshield,andoffstuds.

ronstuds andinstallradio

edwasher,lockwasher,andnuts.

eendof motorshaft.Installwiper

withscrew.Connectwirestowiper

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RTRUCK-TRAILERM25

mentpanel198

NTSONINSTRUMENTPANEL.

anelislocatedinfront ofthe

mtothecab.The panelcanbe

inside,byremovingtwothumb

agesandinstrumentsusedin the

edonthe instrumentpaneland

ganyinstrumentsorgages,

anddisconnectbattery(par.127).

lainwashers,andlockwashers

ls,andremovewires.Thenremove

d gagetoclamp.Removedamp

MBLY

S

nVehicle

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NETICSTARTERSWITCH(GREEN,

OBOTTOMOFNO.BFUSE(YELLOW,NO.14)

WITCHTOTOPOFRESISTORON

4)

CHTOTOPOFNO.6FUSE(YELLOW,NO.14)

TOTOPOFNO.5FUSE(RED,NO.14)

TOTOPOFNO.4FUSE(YELLOWNO.12

R)

HTOTOPOFNO.3FUSE(GREEN,NO.10)

HTOTOPOFNO.2FUSE(BLACK,NO.14)

TOPOFNO.1FUSE(RED,NO.10)

OBOTTOMOFNO.5FUSE(GREEN,NO.14)

ERTOTOPOFNO.8FUSE(GREEN,NO.10

R)

BLE

ABLE

Assembly—RearView

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RTRUCK-TRAILERM25

astenwith clamp,nuts,and

ndfastenwithtwo nuts,plain

swhichholdwirestoflasherand

,nuts,andlockwashersthathold

,and liftoffflasher.

SWITCH

HT

TCH

KPLUGS)

ssembly—FrontView

panel andfastenwithtwobolts,

resandfastenwith screws.

E.

ndlockwashersthatholdgage

onnectoiltemperaturegagecable

efromthreeclampsonradiatorshell.

hosefromoilpipe andpullhoseout

gageandcableoutofinstrument

ableand fastenwithclamp

hreadcablearoundradiatorshell

M


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nnectcabletooilfilter, thenpush

hrubbergrommetin dashandcon-

omtachometer.Removetwo

old tachometertoclampandre-

hichholdtachometertelltalelock

er,theninstallclampandfasten

Connecttachometercable.Tighten

elock.

washer,andlockwasherthat

thenremovenut,plainwasher,

es onterminalpost.Removewires

nsulationwasher,nut,andplain

ovenutsandwashersthathold

mmeterofffrontofinstrumentpanel.

becorrectlyconnectedatinstal-

theninstallclampandfasten

in washers,insulationwashers,and

l wiresonposts.Fastenwireswith

hers.

ockwashers,andflatwashers

res.Removetwonuts andlock

Removeclampandpullgage from

installclampand fastenwith

wireson terminalsandfasten

ashers.

metercablefromspeedometer.

washersfromclamp,removeclamp,

nstrumentpanel.

eteroninstrumentpanel,then

wingnuts andlockwashers.Con-

AGE.

peraturegagecablefromthermo-

sencablefromthreeclampson

roughopeningbetweenradiator

cablefromclampsondash.Remove

d clamptogage,removeclamp,

ofinstrumentpanel.

M


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RTRUCK-TRAILERM25

ableon instrumentpanel,then

gewithtwonutsandl ockwashers.

h,thenpush cablethroughopening

ecover.Securecabletoenginetop

allcablein thermostatvalvehousing.

airreservoirsbyopeningvalve

nectairline fromgage.Remove

d clamptogage,removeclamp

mentpanel.

strumentpanel,then install

twonutsandlockwashers.Con-

onbottomofairreservoir.Start

toatleast 60pounds.

fromgage.Removetwonuts

togage,removeclampand pull

.

strumentpanel,then install

twonutsandlockwashers.Con-

IELDANDCONNECTBATTERY.Install

ctbattery(par.127).

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RTRUCK-TRAILERM25

dforoperationoflightsand

mentpanelor adjacenttoit.

ganyswitches,removewind-

attery(par.127).

mentlights.Pullinstrument

ullsocketout ofhoodandremove

oodand pushsocketinto

omfrontofswitchandpush

lsothatwiring canberemoved.

whichholdstwowiresonterminal,

minalhavingonewire.Remove

nel.Removerightignitionswitch.

dsecurewireswith screwsand

atholdsswitchto instrumentpanel.

sandwireclipsthatholdtwo

wthatholdsknobon switchand

hatholdsswitchoninstrument

ckofinstrumentpanel.

dfastenwithlocknut. Screw

t screw.Installwiresandfasten

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GHTSWITCHANDSIRENLIGHT

hatholdsknobonswitchand

hatholdsswitchoninstrument

mentpanel.Removetwoscrews

esonswitch.Removeswitchfrom

dinstallwires onswitch,fasten-

s. Installlocknutthatholdsswitch

onswitchandfastenwithset screw.

hatholdsknobonswitchand

hatholdslockhousingandpull

nutthatholdsswitchtoinstrument

ntpanel.Removetwonutsand

o circuitbreaker.Removeseven

res toswitch.Removeswitchfrom

ideinstrumentpanelandattach

andwire clips.Installtwowireson

onutsand lockwashers.Install

rumentpanel,theninstalllock

M


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RTRUCK-TRAILERM25

hset screw.Screwknobonswitch

LOCK.

nuts,andlockwashersthat

dremovelock.

ecurewithbolts, nuts,and

flasher(par.198),thenremove

clamptobutton,push buttoninto

mp.Removetwoscrewsandwire

ndremovebuttonfrominsideinstru-

minsideinstrumentpanel and

rews.Pushbuttoninto placeand

kwasher.Installsirenlightflasher.

ndstarwashersthatholdwires

movenut,toothedlockwasher,and

ndremoveinsulator.Removetwo

owashers,insulator,plainand

stenwithnut.Connectwiresand

ockwashers.

ndlockwasherthatholdswitch

screwsandwireclipsthat hold

switch.

floorboardandfastenwith

wiresand fastenwithwireclips

WITCH.

reclips,andwiresfromswitch.

witchknob.Removelocknutand

dfastento instrumentpanel

chandfastenwith setscrew.

clipsandscrews.

M


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g204

TA.

dwinchissecuredtothe front

f adrumcontaining^4-inchcable,

ithwormgearfor operatingthe

akeissecuredtothedrum

withcoverinwhichthebrakedrum

oldsthe loadonthecableto

oorapidly.Thebrakebandis

oadedadjustingscrew.

winch(par.205),thenremovebrake

,wedgerockeroverwitha piece

ctat "O"(fig.263).Slackoff

mchan^ adjustnutstomake

sition\$/sinches(dimension"A,"

adjustingnutsagainstsecondnut

woadjustingnutsuntilthere is

gspacerandfirstofbrakeadjusting

par.206).

AKE.Actionofautomaticbrakeis

yapplyenoughdragtohold a

aged.Whenwinchisreversedby

oturnfor cableunwinding.Test

ga load.Thenstartloweringload

roperlyadjusted,brakewillstop

n2inches,and willholditsus-

oad,removewinchandincrease

M


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RTRUCK-TRAILERM25

gbrakecasecover,looseninglock

justingnutsandthe secondoftwo

ensecondofbraketopadjusting

ghten locknutwhilemaintaining

load onwinch,wedgerockerover

rholdscontactat"C"(fig.263).

acerup intorockerasfaras it

whichis thespacebetweenspring

ustingnuts,shouldthenbeabout

everisnecessary)adjustingnut

RNUT-/WOOD'BLOCK

mentofAutomaticBrake

inch.Thenmaintainlocationof

cknut againstit.Installwinch

esnothold,repeatadjustmentand

equiredload.

andlockwasherswhichhold

over.Removecapscrew,lock

tholdbrakedrum,thenpry off

thautomaticbrakebandassembly

withautomaticbrakeband

erspring,then installretaining

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wthatholdbrakedrum.Adjust

overonbrakecaseandsecurewith

GE.

.The controlsandlinkagefor

ofacross tubewithaleverclamped

visatthedriver's seat,andthe

evis.Thecrosstubeis securedto

KUNIVERSAL

olLinkage

verandto thepowertake-off

ver.Theassemblyissecuredin

emovecotterpinsandclevis

wertake-offandtocrosstubelever,

clevispinholdingleverrodto

beandlevers.

Install crosstubeandsecure

dto powertake-offandtocross

M


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RTRUCK-TRAILERM25

pins andcotterpins.Connectlever

nwithclevispinand cotterpin.

NS.

rivethefrontmountedwinch

propellershafton theoutsideof

inchwormshaft.Theyarecon-

chainsarecoveredinparagraphs

DPOWERTAKE-OFF

olLinkage

in(par.205).Removecapscrew,

r,andpulloffsprocket.

ocket,retainingwasher,lockwasher,

s(par.206).

ins(par.205).Pull sprocketsoff

ocketonkeyinwormshaft.Install

M


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DOUBLEBEARING.

ftanduniversaljointsare con-

onsidemountedpowertake-off

wwhichsecurestheuniversal

heoppositeend ofthepropeller

ringwhichissecuredtothechassis

ssecuredtothe outerendofthe

APNUT

nchChain

ING.Removedrivechain(par.205).

rsthatholddoublebearing to

Removesetscrewwhichholdsfront

rsaljoint andpullpropellershaft

saljoint. Loosensetscrewsin

earingoff shaft.

FT.Removefourbolts,nuts,andlock

bearingstoframe.Loosensetscrews

ertake-offdriveshaft,andremove

ershaftwith thetwosingle

AFT.Installcenterandrearsections

bearingsacrossfueltankbrackets.

M


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RTRUCK-TRAILERM25

TCAPHANGER

oGround

M


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wertake-offdriveshaftand secure

bearingsto framewithfourbolts,

exhaustpipeshieldatthe sametime.

NG.Slidedoublebearingandcollars

ft,andsecurecollarswith set

andshafttoframe,slidingend of

universaljointset screwand

ithfournuts andlockwashers.

ar.206).

.Removetwocotterpinsfrom

drive outpinsandremovechain.

ockcablespring.Removecotter

boltnutby reachingthrough

ndnut.Attachhoist towinch.

rsthatholdwinchto bearing

hangercaps.Lowerwinchabout

inghangerdowels.Removedust

fdrumshaftandremovedustcap,

of drumshaft.Lowerwinchto

stbeinsucha positionthatitwill

ig.267).Raisewinchuntil

alldustcapandbearingon right

dustcap,bearing,andspaceron

wobearinghangerdowelsand

inchuntil onesidetouchesdowel,

rtingsteel barthroughlubrication

oppositeside.Makecertainbear-

ringwithsteelbar;bearingwill

earingcaps onsamesidethey

ithfournutsand lockwashers.

ngs.Removehoistfromwinchand

tallwinchcentermountingbolt,

hroughradiatordoor.

Installchainonwinchsprocket

sprocketchainlink pinsandcotter

M


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RTRUCK-TRAILERM25

13

214

TA.

onsistsofafront winchand

ogetherona winchbasewhichis

e rearofthecab.Aplatformis

Apowertake-offcontrollever,

ndemwinchassembly,isprovided

tain neutral,low,andhighspeeds

nches.Awinchhandclutchlever,

verareprovidedfor eachofthe

heleft sideofthewinchrear base

untedontheleft sideofthe

inethrottlecontrolfromthewinch

olfootleverisprovidedat therear

ngine clutchwhenshiftingthe

er.

ed onthetandemfrontand

measthose usedonthevehicle

acementandadjustmentsaremade

eptthat itisnot necessaryto

akehousingcovers.

mwinchesandthefront

fcableforretrievingpurposes.

chdrumatoneendandcarries a

maintenance,removal,andinstal-

lwinches.

ptlubricatedwithengineoil.

withoil andascableiswound

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tightenerbrackettobaseangle.

erassemblybyremovingtwobolts,

ureeachclamptobasefrontangle

lchaintightenerassemblyon

thfourbolts,nuts,andlockwashers.

assemblyundertwobaseangles

bar. Secureclampswithfourbolts,

ketsaresecuredtotheinput

hesofthereartandemwinch

intighteners,doublebearing,and

washer,andflatwasherfrom

bracketandpullsprocket

gpin.Removesixscrews,which

verstosprocket,andremove

movefeltoilsealsfromcovers

ket.

bearingwithengineoilandpress

wfeltsealsin innerandoutercovers.

versonsprocketswithsix screws.

ringpin andinstallsetscrewon

washer,andnutonbearingpin.

ins(par.209).Removecap

washerfromendofinputshaft and

ocketonkeyininputshaftand

ckwasher,andcapscrew.Install

ins(par.209).Pull sprocketoff

ocketonkeyinwormshaftandthen

ins(par.209).Removecapscrew,

rfromendofbearingshaft and

ocketonbearingshaft,theninstall

dcapscrew.Installdrivechain

M


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RTRUCK-TRAILERM25

blebearingconsistsofa

assisframe,and containstwo

front winchpropellershaft

(par.209).Disconnectuni-

uts,andlockwasherswhichhold

Removedoublebearingassembly

,lockwasherandretainingwasher

movesprocket.Removefourcap

oldeachoftwooil sealcapsto

sandgaskets.Pressshaftoutof

gwithit andleavingoppositebear-

W

dShaft—Disassembled

pacerfromendof shaftandpull

ballbearingout ofhousing.

ingon bearingshaft,then

inghousingandpressballbearing

mainingball bearingonopposite

using.Installbearingspaceron

talled.Installnewoilseal ineach

ergasketbetweeneachcoverand

covertohousingwithfour cap

procketonshaftandtheni nstall

dof shaftwithcapscrewandlock

ndinstalldrivechain.

GE.

inkageconsistofthecontrol

trolsforthe engineclutchand

edtothewinchbaseclose tothe

ectedtotheunitsthey operateby

M


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emwinchassemblyinare-

ntrolleversdo notoperatequickly

movingcotterand clevispin

rod.Thentestagainin arecovery

streturntoneutralwhen released,

on,thecenteringspringsmustbe

s.CAUTION:Centeringsprings

andemWinchHandClutchand

thecontrollevertoo farand

eclutch,thusstartingmovementin

RWINCHCONTROLASSEMBLY(in-

ndbrakeandclutchlevers).Re-

erpinswhichholdbrakeandclutch

ndto rockerleverassemblyat

n removefournuts,bolts,and

M


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RUCK-TRAILERM25

M


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RTRUCK-TRAILERM25

everbrackettowinchrearbase

ubleleverwinchcontrolassembly

WINCHHANDCLUTCHANDBRAKE

pofrearwinchbrakecontrollever and

whichholdbrakecontrolrod to

rolleverpartlyoff thecontrol

pulledfrombrakecontrollever.

ichsecureadjustingyokeat front

chcontrollever.Disconnectbrake

eatfrontend ofbrakecontrolrod

fourbolts,nuts, andlockwashers

ettowinchrearbaseangle,and lift

eleverwinchcontrolfromangle.

ARTANDEMWINCHHANDCONTROL

endpinwhichholdadjustingyokes

atinglevers.Thenloosentwoset

ndcontrollevers.Removecotter

pinanddrivelever pinfromlevers

vetwohandcontrolleverassem-

TWINCHLONGOPERATINGFOOT

otterpinsandendpins whichhold

aftrodlink.Thenloosenclamp

veengineclutch-controlfootlever

hbylooseningnutandclampbolt

tchcontrolshaft.RemoveWood-

WINCHBRAKEANDCLUTCHCON-

cotterpinandendpinfromadjusting

chrod.Removetworods.Remove

tterpinand endpinfromeach

ngcontrollevers.

NTROLLEVER(fig.271).Removenut

o quadrantandremoveendpinand

cabletolever. Removelever.

NTROLCABLEANDTUBING(fig.271).

utswhichholdeachofthe two

emoveoneclipat leftfrontof

dlock washer.Insimilarmanner,

gtotransmissionsideofleft rear

screwsandnutswhichholdclip

nerpipeatrearofcarburetor.Dis-

removingbolt,nut,andlock

tocarburetor.

OFFWINCHCONTROLLEVERANDROD

ever.Removetwocotterpinsand

acketandcontrolrod, andremove

andendpin,whichsecureadjusting

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ffwinchcontrolrodto control

CLUTCHCONTROLFOOTLEVER

andtightenclampboltnut.

TWINCHLONGOPERATINGFOOT

nrightside oftandemfrontwinch

twoendpinsandcotterpins

okeandto shiftrodlinks.

FFWINCHCONTROLLEVERANDROD

ontrolshaft leverbyinstallingend

ver.Lockpinwith acotterpin.

cketandcontrolrod andinstall

talllockpininlever.

NTROLCABLEANDTUBING(fig.271).

dtubingunderrear ofcabatleft

lacingcablealongframeandto

ut,andlockwasherwhichsecure

woslottedscrewsandnuts,which

naircleanerpipeat rearofcarbu-

restubingto transmissionsideof

pto itsbracketwithtwoslotted

y,installtwoclipsandtubing to

NTROLLEVER(fig.271).Position

andflatwasherwhichholdlever

cotterpinwhichsecureyokeat

ever.

WINCHBRAKEANDCLUTCHCON-

ortcontrolrodsto theirconnecting

ndcotterpinto holdeachendof

ollevers.Connectlongbrakeand

okesbyinstallingend pinsand

t frontendofeachrod.

RS(figs.270and271).

erpinthroughwinchrearbase

ckendsofleverpin withcotterpins.

and tightensetscrewsincollars.

ong controlrodstooperating

andcotterpins.

Levers.Installrear tandem

rs,whicharepositionednextto

racketattached,intopositionon

brackettoanglewith fourbolts,

tallendand cotterpinswhich

hcontrolrodtoclutchoperating

brakecontrollever(insamehole

d) andlockrodwithacotter pin.

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CEIC-

LONGL-

P-

S-

HingePinfromFram* Winch

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RTRUCK-TRAILERM25

samemanner.Pullcableandtubing

Removesparetireandwheel

nut,washer,andspringwhich

op rearofcab.Thenremove

t lightsfrombrackets.

Y

Y

mWinchUniversalJointAssembly

fig.272).Removeplatform

oftandemwinchassemblyby

clipswhichsecureplate toframe

eout ofthewaytoprovideaccess

wobolts,twosprings,and four

rearbaseangleto framecross

eld.Removeonebolt,nut,

amptoshield. Removetwobolts,

urebottomofstacktoexhaust

haustpipe.

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mWinchAssembly

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RTRUCK-TRAILERM25

vice(fig.273).Fromeach

ngdevice,removecotterpinand

reverticalliftingdeviceto winch

hAssembly(figs.273and

fttandemwinchassemblyand

moveweightofassemblyfrom

areremoved.Onthe leftsideof

roundwinchrearbaseangle,at

cket,andthenrun chainoverhoist

rontwinchendbearingframe.On

bly,placeoneendof achain

bearingframe,andplacechain

dfronttandemwinchhead.

fig.273).Supportweightof

s,sufficientlytoremoveloadfrom

ecuretandemwinchassemblyto

f frame.Thenremovecotterpin

riveoutpins.

ake-offGearshiftRod(fig.

emovecotterpinandendpinwhich

ntedpowertake-offgearshiftrod.

bly(fig.274).Loosenset

opmountingauxiliarytransmis-

enpryfrontyokeasfarbacktoward

ble.

erfromClutchControlRod

clevispinwhichsecureclevisyoke

toclutchlever.

mbly(fig.275).Usingtwo

lystraightup,liftingit slowlyand

Lift assemblyontowoodenblocks,

is notrestingonparts whichmight

DEMREARWINCH.

ntoPositiononFrame(fig.

twohoists toassembly.Liftas-

onframeand loweritcarefully,

intassemblyinto positionon

ntighten setscrewwhichsecures

take-off(fig.274).

g. 273).Supporttheweight

twohoistsand installtwomount-

chsupportplates andwinchbase.

kthemwithcotterpins.

ngineClutchControls(fig.

ositiontwolinksonpowertake-off

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rodbyinstallinglinkpin andcotter

oclutchcontrolrodbyinstalling

dlever.Lockclevispinwith a

ce(fig.273).Connecteachfront

nchrear basesupportangleby

ns.Securehinge pinswithcotter

d(fig.272). Liftexhaust

exhaustpipeandinstalltwobolts,

urebottomofstacktopipe.Posi-

ecurei twithabolt,nut, and

g.272).I nstalltwobolts,

(one washeroneachendofeach

aseangleto frame.Installplat-

backoftandemwinchassembly,

esidechannelsandtighteningfour

ndTubing.Pull throttle

winchassembly.Securetubing

ipandtwoslottedheadscrews

d endpinandcotterpin which

lhandlever.

Installsparetireand wheel

oodlightsinbracketsattop

andnut whichholdeachlight

backof eachlight.

ifttandemwinchguardinto

winchassembly.Opendoorsof

cletoprovideaccesstonuts.Then

asherswhichsecureguard torear

olts, nuts,andlockwasherswhich

llfourbolts,nuts,andlockwashers

chrearbaseangle.Securetwo

ankinpositionat leftrearofcab.

gs.Removetwochainslings

embly.

twinchcontrolsasinstructed

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RTRUCK-TRAILERM25

TA.

erfifthwheelcouplerassembly

me.Aspring-loadedlockingjawis

fthefifthwheel,and securesthe

gpintothe tractorlowerfifthwheel,

hetractor.

te(fig.276).Disconnecttwo

ngplateatrear ofassembly.Remove

couplerby looseningfourcap

ipsUnderneathplatecanbe turned

ovalofthedummycouplingplate

erneaththecoupler.

move12bolts,nuts,andlock

mountingbrackettoframe«ide

ateateachsideof fifthwheel

pesling toassemblyandusea

ram* andremoveitfromvehicle.

chachain orropeslingto fifth

liftit intopositiononcouplermount-

meandcouplermountingplateby

washersinto eachsideofassembly.

(fig.276).Attachthetwo coil

plermountingplate.Placedummy

e,positioningthe fourclipsunder

pscrewsandlockwashers.

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WheelCouplerLowerAssembly

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RTRUCK-TRAILERM25

CEINSTRUCTIONS

EQUIPMENT

nt218

ANDEQUIPMENT.

n paragraph36,thefollowingare

hemaintenanceofthisvehicle:

Thetoolsetsavailabletoindividuals

dependentupontheallocationinthe

SNLN-19.Thecomponentsof

illustrated.

altoolsforservicingthevehicleare

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26

ve233

heheavyduty,mechanical,

centricanchorpintype,operatingon

S"type camsareintegralwiththe

nself-aliningtypeballbearings,

djustersareof the360-degreetype,

tmentof thebrakes.Thedrums

mitfastdissipationofheat.The

inderswhichare mountedinthe

s;eachcylinderprovidesbraking

ybreakawayfeaturesarebuiltinto

hwillholdthesemitrailerfora

erbreakawayfromthe towingve-

evalveisprovidedtopermitthe

torand thesemitrailerareun-

edbyafootand handcontrolonthe

y

g

radius

ia

ngeablewith

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RTRUCK-TRAILERM25

MENT.

pwheelassemblyuntilwheel

ON:Whenjackingaxleassembly,

ttopreventjackslippage.

ngscrewina counterclockwise

rned.Turnadjustingscrewin a

otchesormore,untilwheelturns

dureonalleight wheelsisidentical.

Axle

MENT(fig.279).

ngmajorbrakeadjustmentonly

chorpinshasbeendisturbed,or

wdrums havebeeninstalled.

oth anchorpinssothatthe

fig.295).

OTE://wheelassemblyfails

ckoff ontheslackadjustersthrough

eslackadjusteradjustingscrew,and

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ngscrewclockwiseuntilthe

o rightandleft,andcontinue

eruntilthebrakeshoes arecentral-

earanceat0.010inchatthe

ecamend,of thebrakeshoes.

horpinswhileholdinganchor

nch.

stment

indersaremountedona carrier

totheundersideof thewalking

ylinderisto converttheenergyof

calforcenecessarytoexpandthe

mand applythebrakes.Airpres-

alveenterstheportatrear ofthe

checkbyapackingcup,movesa

adjusterand applythebrakes.

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RTRUCK-TRAILERM25

MBLY.Disconnectairlinesatwalking

m rodendpinat slackadjuster

utrodendpin (fig.281).Repeat

andoppositeendof equalizer.Place

mandraisejackuntil jackcapcon-

emitefittingsandgreaselineswhich

Remove14capscrewsand14lock

ercarrierassemblytoundersideof

ejackandlowerbrakecylindercarrier

d283).

tment

cotterpinsfromrearendofcylinder

pins.Liftcylinderoffmounting

rmlywithwrenchand turnyoke

cylinder,removeoilplugat

todeterminewhetherornotcylin-

OTE:Cylindermusthaveapproxi-

gine oil.

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rLines

erLinks,andSlackAdjuster

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RTRUCK-TRAILERM25

CarrierMountingCapScrews

GBEAM

ASSEMBLY

arrierAssembly

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ONCARRIERMOUNTINGPLATE.In-

d.Turnjamnut oncylinderpush

ewyokeontocylinderpushrod

einpositionwithjamnut.Place

curecylindertobracketwithrod

NOTE:Wheninstallingonecylin-

irport inthecylinderbefacingin

hecylinderwhichismountedon

mounted,makecertainbothports

airportsarein oppositedirections,

rrierAssembly

hebrakecylinderwillnot belong

inders.Couplecylinderyoketotop

n andcotterpintosecurein place.

ightenyokejamnutand pullouton

cylinderoperatesfreely.Remove

erandinstallitin airportincylin-

SSEMBLY.Placejackundercenterof

rierassemblyonjackmakingcer-

arefacingtowardinnerside ofsemi-

hecarrierassemblytowalking

4 capscrews(fig.282).Install

ngs.Lubricatethetwofittings.

kadjustersusing rodendpinsand

aldropsof oiloneachrodend pin.

ecylinders(fig.280).Makeminor

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RTRUCK-TRAILERM25

wheelsof theassemblywhichbrake

1).NOTE:Priortoplacingsemi-

railerbrakesinthe appliedposition.

ywatertodetectairleaks.Shoulda

nectionbodyandnutuntilleak

hbubbleintensecondsispermissible.

astmechaniteironwiththirty

dtheoutsidediameter.Thedrum

ngwheelandhubassemblyfromthe

CylinderfrontCarrier

ewsholdingupperandlower

te.Removedustshields (fig.286).

ubassemblyasoneunit(par.

utstopreventthemfromturning,

ldingdrumto hubflange(fig.287).

assemblyagainstsemitrailer

Cleanall dustandotherforeign

.Placedrumin positionondrum

hoseinhub.Installbolts, nuts,and

enoppositenutstobringdrumdown

umondrumpilot.Install wheeland

ar.255 d).

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ountedatrearend oftopdeck-

mergencybrakeairlineandtheother

consistof ametalscreenmounted

opreventdirt,waterandother for-

y-emergencyvalve.Noadjustment

unctioningofcleaner.However,

00miles,anddisassembledand

miles.

DustShields

.Closethe serviceandthe

satrearof towingvehicle.Remove

eaner,allowallmoisturetodrain,

ut-offvalves.

etwocapscrewsholdingsedi-

nersupportandpull straineroutof

ngsolvent,andreplace.

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RTRUCK-TRAILERM25

supplyattowingvehicle.Dis-

ntocleanerbody.Removethetwo

wocapscrewsholdingcleanerto

rout.

sitiononmountingbrackets.

tighten.Installthetwoconnector

ethetwoairlinesto theconnector

ewsholding cleanertomounting

towingvehicleand testtubing

DrumfromWheelandHubAssembly

water.Shouldleaksoccur,tighten

NOTE:Wheninstallingcleaner,itis

bossedonthe outersidebepointing

therearof unit(fig.289).Open

ehicle.

ONNECTIONS.

299).Two flexibleairlines,

betweensemitrailerandtowing

used betweenairoutletonmain

erswhicharemountedoninsideof

sareof f^-inchdiametercopper

eservoirsandrelay-emergencyvalve,

g.

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satrearoftowingvehicle.Open

eservoirs.Allowallairtodrain from

vethebrassnutsfromeachendof

oldingtubingto frameandpull

ingthroughloom.Installthe

workwhilemakingproperbends.

ubing.Placesleeveovertubing

NIT

er

onnectorbody,holdtubingfirmly

andtightentheconnectornut.

carebeexercisedwhenbendingand

harpbendwillkinktubingand retard

epdirtandotherforeign matterout

atubingcutter,notahacksaw.

entaltofunctionalpartsofrelay-

ubingwithatubecutter,feedcut-

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RTRUCK-TRAILERM25

ysmallamountwitheachcomplete

hecutteris fedtoorapidly,theend

ward,thusreducingtheinside

nalllines areproperlyanchoredto

pswhichareweldedtoframemem-

gbecomesdamaged,cutoffthe

hnew,usingstandard54-inchWest-

dof replacementtube.Noattempt

ed%-inchcopperlines.Removeand

konreservoir.Openshut-offvalves

orleakage(par.226 d).

OWLSTRAINERSUPPORT

embled

ied,covertubeconnectorwith

econdsis permissible.Leakagein

eningconnectorbodyandnuts.

1).

ofeightequalizerlinks,four

llcotterpinsfrom equalizer

urnadjustingscrewonslackadjuster

ntilslackadjusterclearsequalizer

zer.

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RTRUCK-TRAILERM25

INDERCAMBEARINGBRACKET

CAM

Placeequalizerlinkin position

fgreaseoverrodendpin andinstall

ualizer.Installcotterpinin rodend

kadjusterin aclockwisedirection

risinalinementwithhole inequal-

aseoverrodend pinandinstallpin

slackadjuster(fig.291).Give

lizerlink andthewheelopposite,a

).

terpinsfromrod endpinsat

nd driveoutrodendpins. Turnad-

a counterclockwisedirectionuntil

emoverodendpinfrombrake rod

out.

lequalizerin positiononbrake

verrodendpin andinstallclevisin

kadjusteradjustingscrewin a

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equalizerlinksmeetholesin equal-

alizer,usingthe tworodendpins.

pinand thetworodendpins.Give

(par.221).

ractsasa brakeleverandalso

ofadjustingbrakes.The slack

andis attachedtothebrakeequal-

brakecylindermovestheslack

sinthe drum.Thesemitraileris

rsandtheyare interchangeable.

djuster

emovewheelandhubassem-

vecotterpinandrodend pinfrom

ofgrooveincamshaft.Tapsnap

dslackadjuster.Removetwolock

apthe "S"portionofcamtowards

yabouttwoinches.Tapslackad-

rfaceofcamshaftwithgrease.

tmakingcertaintheadjusting

onaxle.Tapcamthroughslackad-

mshaft,usingflatwasherand

ktoslackadjuster,usingrod end

inorbrakeadjustment(par.221).

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RTRUCK-TRAILERM25

E

ieldforBrokeInspection

T.

moldedblocktype,54mcnthick

reboltedto eachbrakeshoe.All

ethroughoutsemitrailerbrakes.

brakeshoesandlinings without

yremovingthetwodust shields

withsix capscrews.Checkfor

ness%inch),andgreaseonthe

liningsonallbrakeshoes beof

dbraking.Iflining isfoundtobe

cksonthatspindlemustbe replaced.

emovethewheelandhub as-

Removethedustshields(fig.286).

kwashersholdingbrakeliningto the

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matterfromthesurfaceofbrake

ertainthatthe boltsholdinglining

dthat lockwashersareused.Before

anchorpins(fig.295). Makecertain

Lubricatetheanchorpinswith a

atingoil;placegreasearoundthe"S"

hub assembly(par.252b).Adjust

.296and297).

ubassemblyasoneunit(par.

ganchorplatebrackettomounting

ining

toffeccentricanchorpins.Pull

ffcamandanchorpins. Removethe

es.

ofgreaseoversurfaceofbrake

es.Donotallow greaseoroilto get

Wheninstallingnewshoesdo not

acebothshoeson thatspindle.

throughoutsemitrailer.Laythetwo

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RTRUCK-TRAILERM25

AnchorPins

allguide returnspringandtwobolts.

nggreaseovertop andbottom

mof greasearoundanchorpins.

andS-cam.Placeanchorplatein

s. Turnadjustingnutonslackad-

oplaceshoeson an"O"point.In-

r.252 b).Priortoremovingjacks,

par.222).

equippedwithtworeservoirs.

mainframememberstowardthe

ailerdeck.Asheetmetalhousingis

mage.

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AnchorPlate

hoes

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RTRUCK-TRAILERM25

VALVEANDRESERVOIRHOUSINGSTOVEBOLT

ERVOIR

alveandReservoirHousing

ffvalvesattowingvehicle.Re-

e capscrewsandliftairreservoir

fig.298).Disconnecttubingattank

-boltsholdingtankto framedeck

ck,pipeplug andconnectorbody.

andtubingconnectionbodyin

nposition,makingcertaindrain

insemitrailerdecking.Connect

onnectorbodyattank.Secure

gtwoU-bolts,fournutsand four

ngvehiclestoallowairtoblow

nk.Keepdraincockopenseveral

orotherforeignmatterwhichmay

pe.Closedraincockandcheckfor

g,andtubingconnectorwithsoapy

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MERGENCYVALVEEXHAUSTVALVE

alveMountedonLeftSide

htenthefittinguntilbubbles dis-

securingitto deckingwithtwo

LVE.

equippedwithtworelay-

reidenticalinconstruction.One

heelson rightsideandthe otheron

g.Purposeof valveistogiveoper-

rakes,in bothapplicationandre-

rgencyfeatureswhichautomatically

erbreakawayfromtowingvehicle.

0).Removetwostovebolts and

dlifthousing out.Closethetwo

ehicle.Removealltubingconnec-

ndall otherfittings.Removethe

ayvalvetosemitrailerframeand

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RTRUCK-TRAILERM25

RESERVOIR

alveMountedonRightSide

veisfurnishedwithoutfittings.

and"L"fittingsoutofrelay-emer-

ainstthethreadedportion,turn

tings.

Coatthe threadedportionsof

allfittings invalve,makingcertain

woboltsholdingvalveto semi-

hebolts.Coupleeachairline to

tsholdingvalveto semitrailer

vesatrearof towingvehicle.With

stallvalvefittings andtubingcon-

arediscovered,tightenfittingand

ars.Installhousing,securinghous-

andthreecapscrews.

YRELEASEVALVE(figs.299

edwith oneemergencyair

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LEASEVALVE

encyReleaseVofve

left-handsideofsemitraileron

entaheadoffronttires.Thepurpose

kewhenit isnecessarytomovesemi-

cle,orshouldbrakesfail torelease

Whenvalvebuttonis pressed,air

esystemofboththesemitrailerand

t-offvalvesareclosedat rearof

veboltsandthreemounting

alveguardtosemitrailerframeas-

railerbrakesystembyclosingthe

or.Opendrain cockatunderside

nefromrelay-emergencyvalve

vehicle.Removethetwoscrews

compartmentandpullthevalve

ftoolcompartment.Removethe

endof valve.

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RTRUCK-TRAILERM25

ectorbodyintovalve,andin-

nectorbody.Placevalveandtubing

mpartmentwithexhaustportdown.

nectorbodyatrelay-emergency

gvalveassemblyto toolcompart-

2)).Placevalveguardovertank

semitrailerdeckingbyusing two

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agram(fig.302),illustratesall

is vehicle.Allelectricalunitsare

Eachwirein theelectricalsystemis

esecolorswillbefoundon thecircuit

everallengthsofconduitand wire

foreitheroftheassembliesisidenti-

RCUIT.

wingvehiclewill notbedis-

urrentwill hereafterbeconsidered

t rearoftowingvehicle.Tolocate

ndamentalprincipleoftrouble

possiblesourceoftroubleafter

localized,asfollows:

ON"position.Placethefoot

n.Testeachlightbladein socket

owreadingvoltmeteroratest light.

currentineachlight blade,plugthe

theflowof currentattheopposite

wsthrough jumpercableitmaybe

oodcondition.

locatedinholeat frontcross

ocketbodyextendthroughholeand

g.305).Testeachlightterminal.

"forstoplight,"Q"forground,"TL"

Shouldcurrentfail toflowthrough

sa defectivesocket,ordefective

terminal.Ifcurrentflowsthrough

ingoodcondition.Continueto

semitraileruntilsourceof trouble

ked"BK"onlightsocketisdead.

pmentonthissemitrailerin-

elights,fourclearanceblackout

M


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K-TRAILERM25

M


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tstoplightandblackouttaillight,one

vicetailblackouttaillight,andtwo

tassemblies.Theflowofcurrentis

ngvehicle.Thecombinationservice

llightis mountedattheleft-hand

nationblackoutstopandblackout

handrearofthesemitrailer.Thelens

nedto producetwobeams.This

ckisfollowingaprecedingtruckat

obeamswillmergeinto asingle

accuracyofconstructionnecessary

E-CLIPLOCKNUT

T

nBox

solderedtothelensretainer,and

theretainerto formacomplete

ut,itis necessarytoreplacethe

.

oor screws.Removethedoor

s,outoflight housing.

lacementunit.Replacedoor,secur-

ws.

M


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RTRUCK-TRAILERM25

ewsholdinglenshousingtolight

directionuntilhousingisfreeoflight

ndgasket.Pullthetwolensretainer

housingandliftlensout.Removethe

ulloutbackingplate.Removetape

pull assemblyout.NOTE:Removal

ckoutclearancelightsisidentical.

oreignmatterfromsurfaceofpig

sfromsemitrailerbody.Splice the

apthesoldered splicewithrubber

erubbergasketandbackingplate

semitrailerusingfourscrews.Place

base;securehousingandlensassem-

oscrews.NOTE:Whenreplacing

BROWN—SERVICESTOP

m

owonlensis pointingdownand

ebottomof thelight.

tisequippedwithtwoamberand

movalprocedureforbothisidenti-

dyflange,removelensandgasket,

andmeltsolderusing soldering

andwasherandpullassemblyout

tassemblythroughholeinmount-

usingnut andlockwasher.Clean

whichextendsfromlightbody;also

ethetwowires togetherandsolder

ertape,thenwith frictiontape.

M


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Wheninstallinglensin blackout

marked"TOP."Makecertainthe

rlensis installed.

withthreejunctionboxes,one on

nitnearfrontwheel,andone located

ight sideofunit.Removalofthe

urscrewsholdingboxcover

frictiontapefrom eachsplice.

IGHTWHITE—STOPLIGHT

tSocket—CoverRemoved

etothelimitedamountofwire

ox,heateachsplicetomeltsolder

cut them.Removescrewfrom

knutoff junctionbox.Pulleachwire

ctionbox.Removeboltholdingbox

x.

oframemembermakingcer-

cableassembly.Placehousingas-

allgrommetoverwireends,and

Turn housingandlocknutassem-

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RTRUCK-TRAILERM25

Switch

uitto housingusingwedgeclips.

ether,matchingblacktoblack,

splice;insulateeachspliceusing

hellacis available,givetapea

reinto junctionboxandinstall

Y.

otterpinsfromwingnutstuds.

ll fusepanelcoveroff.Pullfuseout

se clips.Placefusepanelcover

nel usingtwowingnutsandcotter

s markedastocolorofwire and

uldanyof thelightsfailto light,

ses.

T.

socketcaptobody(fig.305).

dliftwasher,terminalcupand

M


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rboltsholdingsockettosemitrailer

fromrear sideofcrossmember.

boltin placewithfourbolts.

dnuton eachterminal.Placesocket

Cleanallpointsofcontactbefore

minalnutssecurely.

sholdingswitchtocrossmem-

minal.Pulleachwireoutof switch

sition.Placewirethroughholes

taingrommetis insertedinholein

nalsininnerside ofswitch(fig.

M


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ndersemitrailerwithlegand

t.Raiserearend oflegassembly

ns andlockring.Placestrutas-

et.Placealightfilmofgrease'over

hsupportstrutandmountingbracket.

setscrewsandlocknut.Fastenstrut

ng.

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RTRUCK-TRAILERM25

rtrunniontypeaxleswhichoscil-

e walkingbeam,thuspermitting

seand longitudinaldirections.This

passovera9-inchobstaclewith

onthe ground.

TS

onAxleNut

craneandhoistassembly(par.

Hoistpocketislocatedbetweenthe

htandleftsideof mainframe.Using

stals,andtwo20-tonhydraulic

wheelsclearground.Placetwo

entwalkingbeamfrommoving.

d hubassemblyfromtrunnion

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oistassemblyso thatthetrolley

e.Fastenchainto hoistwiththe

erail. Fastenchaintotrunnionaxle

rodendpinsfrom thetwoequalizer

trunnionaxle(fig. 291).Remove

trunnionaxle.Removecotterpin

ustwasher(fig.308).Pulltrunnion

nstallaxlenut onthetwoaxle

letopreventthreadsfrombecoming

ET

moved

herfromthe twocamshafts

arkan "L"ontheleft-handbrake

handassemblyforidentification

oltsholdingbrakeadaptermounting

s.Liftthecompleteassemblyoff

flatwasherfromthetwo

etsoutoftrunnionaxle(fig.311).

andcambearingbracketsinto

nionaxle.Cambearingbracketsare

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RTRUCK-TRAILERM25

rackets.Cambearingbracketillus-

t-handtype.

onottightennut.Install brake

pindle.Makecertainyouplacethe

ide,andthe assemblymarked"R"

gs"L"and"R"aremadeonbrake

mbly.

cket.Installtheeight bolts

ollar.Successivelytightenopposite

lBrakeAssembly

e upevenly,andpreventcockingof

e.

pthe bearingintothecam

steroncam(fig.309).Installflat

tightennut.CAUTION:Trymov-

certainit movesfreely.Ifthereis

terandcambracket,tapcam

ightennuton cambearingbracket.

ltretaineroverspindle.Place

d feltsealnexttothrust washer.

le.Cleanalldustandother foreign

e,andplacealight filmofgrease

xleonwalkingbeamspindle,making

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axlemeetsandfitsintodowelpin

verinnersurfaceofouterthrust

verspindle.Install nutandtighten

ection.Afternuthasbeentightened,

llcotterpin.Placesmallamountof

b captotrunnionaxle,usingfour

aringBracket

ksto theslackadjuster,using

pins.Installthetwo wheelandtire

ration,lubricatethetrunnion

g.Placeseveraldropsof oilonrod

vebrakesontrunnionaxlea minor

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RTRUCK-TRAILERM25

htwo walkingbeams,oneonthe

e.Theyarehinged tothesiderails

ion shaftpermittingthewalking

direction.Brakecylindersarehoused

kingbeamtofurnishmaximumpro-

valandinstallationproceduresof

identical.Bothwalkingbeamsare

nterchangeable.

vethetwotrunnionaxlesfrom

5).Removebrakecylindercarrier

gbeamaboutthreefeet apart,

eronthe innerside.Removethe

rto trunnionbeammounting

gscrewlockingbolt(fig.26).Re-

stripmountingplateat end,and

bracket.Removethecotterpin

bracket.Loosenpinchboltinspecial

ingbracket,andpullcotterpinout

ngbootandshifting screw

eclamp,holdingboottoshifting

screw.Turnshiftingscrewout of

two-manoperation.Withoneman

fig.314),the secondmanturns

bracketandtrunnionshaft(fig.

ngshiftingscrewbracketto

tout.Removethespecialnut,

asherfromshiftingbracket(fie.

ovethefournutsholdinginner

cap,andtapcapoffthe trunnion

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dingoutertrunnionshaftmounting

fig.316).Lowerthetwojacks

welpinout oftrunnionshaft(fig.

walkingbeam.

rthetwojacks.Liftwalking

mbly.Placerockerbeamon

brakecylindercarrierassemblyon

ntheair portsinbrakecylinderare

fiveboltholesforattaching

alkingbeamdirectlyunder

aintheholes,whichholdshifting

dcenterofsemitrailer.Couple

amusinga spreadchainstraddling

Whencouplingchainto rockerbeam

nottocausechaintobind between

emitrailerside rail.

ilmof greaseoversurface

onshaft throughwalkingbeam

pin holeintrunnionshaftis

erand towardthetop.Hoistwalk-

hfromtrunnionshaftmounting

318).CAUTION:Thetrunnion

Makecertainthe dowelpinisin-

nterofsemitrailer.Theholetoward

oilhole.

.Continuehoistingwalking

nshaftentersholeintrunnion shaft

unnionshaftmountingbracketcap

nthetwoscrewholesthat holddust

theouter sideofsemitrailer.Secure

lockwashers.Placeinnertrunnion

runnionshaft,securingcapto

ndlockwashers.

nnersideofrockerbeamusing

Placeshiftingscrewthroughholein

acerandbronzewasherareplaced

ation(fig. 312).NOTE:Innerand

ndspeciallockingnutsareinter-

railer.

eroverinner endofshifting

n placethroughspacebetween

andtrunnionbracketwiththe

beam.Turnshiftingscrewslowlyin

urningshiftingscrewthroughshifting

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K-TRAILERM25

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RTRUCK-TRAILERM25

KINGBEAM

REWDUSTFaT

verandDustFelt

GBRACKET

ut

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ACKETCAP

gScrew

NSHAFTBRACKETCAP

onShaftBracketCap

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RTRUCK-TRAILERM25

ACKETCAP

dWalkingBeam

ughshiftingbracketabout15

ftingscrew.Installbootretainer

Continueturningthe shiftingscrew

ofU-bracket.Turninnerspecial

mentwithcotterpinholeinshifting

herstrips,securingthemto

withplatesandcapscrews.Place

ndoftrunnionshaft,securingit to

withfeltdustcoverandfour screws

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ELPINHOLE

ininTrunnionShaft

crewlockingbolt,checkadjust-

naxle(par.250). Priortoplacing

atetrunnionshaft,trunnionaxleand

runnionaxles(par. 246b).

minoradjustment(par.221).

edestalandhydraulicjackat

theframeaninchortwo torelieve

wheelassemblies.

ngbolt(fig.26), withshifting

ckwisedirectionuntilstopis

lockwisedirectionabout%turn,

ancebetweenoutersideof walkingbeam

untingbracket.Checkclearanceby

setwopoints.

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RTRUCK-TRAILERM25

ippedwitheightwheels,hubs,

equippedwithheavydutytapered

ntsofthebearingsaremade through

NIONAXLE

kingBrackets

Thewheelsareof theten-stud,

sktype.Allmaintenanceprocedure

sembliesisidentical,exceptwhen

ls.Whenremovingtheinner rear

rrierassembly.Allwheelsandbear-

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bsareinterchangeablefromfrontto

hewheelandhub canberemoved

MBLY,

runnionaxleand raisesemi-

ing ofwheel.NOTE:Trunnionaxle

kets.Placejackcapunderjacking

lleyCarrier

319).Ifjacksare usedinsoftsoil or

derjack.Removethetwoboltsand

semblyto rearcrossmemberand

tidlerpulley carrierout.

y(par.10). Placehoistas-

othewheelassemblywhichis tobe

okonchainhoist,and fastentongs

nghubcapto hubassembly.

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RTRUCK-TRAILERM25

fig.321).Removeaxlenut

acounterclockwisedirection.

erandworkwasheroffaxlespindle.

rbearingandworkbearingoff

oist,graspthewheelfirmly and

2).

onring,andfelt, offspindle(fig.

otterPin

ubassemblywashthe innerand

lvent.Useastiffbrush toremoveall

hub.Inspectthecups inhubfor

Inspectbearingsforchippedrollers,

lforeignmatterfrominsideof brake

ralpurposegreaseNo.2,U.S.

dthelubricantinbetweenrollers.

ge andbearingcone.Coattheinside

ith afilmofgreasenot exceeding

andhub capwithlightfilmof

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ndHubAssemblyasOneUnit

hespacebetweenthetwobearing

usegreaseto runoutonbrakedrum.

onaxlespindlewithfeltretainer

ndle.Placeinnerbearingin hub.

nerbearing withitsflangedside

e feltgreaseretainernexttocom-

ron theaxlespindle,lockingitin

wel whichfitsintosloton spindle

ar(figs.323and324).

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RTRUCK-TRAILERM25

ubBearingfromTrunnionSpindle

blyfromcraneand hoist.Shove

otto disturbthesettingofinner

t backintohubasfar aspos-

indlenextto outerbearing(fig.325).

ninaclockwisedirectionuntil

st.Adjust wheelbearings(par.

oundboards.

MENT,

gs.

i nfullyreleasedposition,and

tobe workedon.Checkend

barbetweentireand floor.Should

ng(par.253 b).

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crewsholdinghubcaptohub.

ththewheelbearingwrenchdraw

-washerandturnthewheelbackand

d thewheelturnswithslight diffi-

2 turn.Installcotterpinand hub

embliesareremovedfromvehicle

stassemblywhichisfurnishedwith

re usedonlyoninnerwheelassem-

ohoistwheelout frombetweenside

ceofHubInnerParts

followingremovalandinstallation

enanceofinnerrearwheels.

pinholdingidlerpulleycarrier

dremoveidlerpulley carrier(fig.

y(par.10). NOTE:Priorto

placeali ghtfilmofgreaseover

d inswingingcranemorefreely.

yin hoistpocketadjacentto

astentiretongstotireand takea

lding wheeltohubassembly

uds.Hoistwheelhighenoughtoclear

oundtowardoutside ofsemitrailer

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RTRUCK-TRAILERM25

aringandD-washer

und(fig.327).CAUTION:Donot

vableflangeto wheel.Tirewillblow-

y(par.10). Placehoistand

nttohubonwhichwheelis tobe

wheelstudsinhub.Installand

ureevenlyon allnutsbyprogres-

ntilall nutsaretight.NOTE:All

heletters"L"or"R"whichindicate

notinterchangeable.Wheelsare

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nerTireandWheelAssembly

MBLY,

E:Makecertainbrakesareinthe

0-tonjacksundertrunnionaxle

to permitturningofwheel(fig.

oundorsand,placejacksonground

REASSEMBLY(par.254).Remove

Pull cotterpinfromaxlenut(fig.

ing inacounterclockwisedirection

ringfromhub bypullingout

on.Pullhuboffaxle spindle(fig.

onringand feltgreaseretainer

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RTRUCK-TRAILERM25

TireandWheelAssembly

acehubonits side,removethe

angeandliftdrum offhub(fig.329).

hub onouterendwithflange

er foreignmatterfromsurfaceof

mpilot andinstallthesixbolts, lock

ightenoppositenutstobringdrum

ngonhubpilot.

anddrum assemblyisthe

hub assembly(par.252b).

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dDrumAssembly

53b).

petiresareheldto wheelby

l.Tiresareinterchangeablethrough-

esmustbe 90pounds.

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RTRUCK-TRAILERM25

omHub

reassemblyfromhub(par.

blyongroundwith removableflange

reremovingnutsholdingremovable

mitallairto escape.Removethe20

wheel.Liftremovableflangeoff

oppositevalveoffgroundatabout

tlywithsledgehammer,driving

betweenbeadlock,collapsingbead

tireand pullbeadlockoutoftire.

vel,andotherforeignmatter

ydeflatedtubeintire.Inflate tube

bead.Collapsebeadlock(fig.330).

insertbeadlockintire (fig.331).

napit intoitsoriginalshape(fig.

letelydeflatetube.Applytireassem-

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edandClosed

ck

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RTRUCK-TRAILERM25

k

emtowardremovableflangeside

ableflangesothat holesareinproper

enwheelandremovableflangeand

rewingthemdownbyhand(fig.334).

nenutfairlytight.Tightenstud nut

utmidwaybeweenthesetwoand

uetighteningremainderofstudnuts

Inflatetireto 90poundspressure.

kecertaintheyare tight.

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Wheel

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RTRUCK-TRAILERM25

ANGE

bleFlange

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DTEMPORARYSTORAGE

RYSTORAGE

eordomesticshipment258

pment259

OS.

mentofthevehiclesisthe same

ageorbivouac.Preparationfor

tionsforloadingand unloadingthe

ecurethevehiclesonfreightcars,

r,clearance,weight,andotherin-

preparethevehiclesforrailship-

ion,andforpreparationforindefi-

ORARYSTORAGEOR

porarystorageor domestic

ediateservice,butnotused forless

beindefinitelystoredaftership-

edforsuchstorageattheir destin-

rarilystoredorbivouacked,

evehiclescompletely(par.30).

zingtemperaturemaynormallybe

georshipmentperiod,test the

dtheproper quantityofantifreeze

romfreezingatthelowesttempera-

eorshipping period.Completely

ks.

dterminalsforcorrosionandif

servicebattery(par.127).

operlyinflatealltires. Replace

uiringretreadingor repairing.Do

rs,orother surfaceswhichare

f immediatelyanyoil,grease,gaso-

contactwiththetires underany

nforlimitedstoragewillinclude

fterthe battery,coolingsystem,

ebeenmade,tocheckongeneral

tanydefectsnotedinthevehicle

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RTRUCK-TRAILERM25

stored,ornoteon atagattachedto

airsneeded,or describingthecon-

these itemswillthenbemadeto

ecessarytoremovethefuelfrom

United States,nortolabelthe

eCommissionRegulations.Leave

ng inlocationswhereFireOrdi-

,requireremovalofallgasoline

Removerustappearingonany part

r.Repaintpaintedsurfaceswhenever

alfromdeterioration.Exposed

esusceptibletorust,suchas winch

edwithaprotectivemediumgrade

bdoors,windows,andwindshields.

mats,whereprovided,inan unrolled

ledorcurledup.Equipment,suchas

s,andfire extinguishers,willremain

maticinspectionjustbeforeship-

ureall abovestepshavebeen

readyforoperationon call.Make

temsandattachit tothesteering

nService(par.25).

nefor storage,removetheair

theengineandset thethrottleto

ronepint ofmediumgrade,preserva-

partmentSpecificationAXS-674,of

carburetorthroat,beingcarefulnot

ignitionswitchasquicklyaspossible

othecarburetor.Withtheengine

andturn theenginefivecomplete

kingmotor.Ifthe enginecannotbe

hthe switchoff,turnitbyhand,or

andgrounditbeforeturningthe

motor.Thenreinstall theaircleaner.

ndchockthewheelsortracks.

.

l beinspectedweeklyforcon-

erisaddedwhenfreezingweather

ywithaportablechargeror remove

temptto chargethebatteryby

mperatureisexpected,addthe

mpoundtocoolingsystemtoafford

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RTRUCK-TRAILERM25

OINT

ments—TractorTruck

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RYSTORAGE

OINT

ments—Semitrailer

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RTRUCK-TRAILERM25

ftherearwardrear wheels.These

widerthanthe over-allwidthofthe

cleats"F"against blocks"G"to

lockedwheel.Nailthelower cleat

nynailsandthetop cleattothecleat

ositiontwocleats"H"oneover two

eof eachfrontblockedwheel.Nail

ofeachblock"G"withtwo40-

astentwo cleats"E"overthe

ur strands,twowrappings,ofNo.

hroughthebumperlugs onthe

ugh stakepocketsonoppositesides

menumberofstrandsof wire

earofthevehicle,andthen attach

of thefreightcar.Tightenallwires

r).

efourblocks"J,"one between

ailblocks"J"securelytothe floor

nails.Positiontwocleats"K,"ontop

ecleatstotheblockswith 40-penny

etothefrontof eachforward

hrearwardwheel.Nailtheheelof

ive40-pennynails,andtoe-nailthe

e tothecarfloorwith two40-

gainstforwardendofsemitrailer.

ock"H,"inpairs,oneon topofthe

arfloor.Naillowercleatsto the

,thennail topcleat"F"tolower

.Passfourstrands,two wrappings,

e("C,"fig.336) throughthe

ndpassthroughthe stakepockets.

nds ofwireacrossthebedof the

).Fastenthe wiretooppositestake

ghtoremovetheslack.

condmethodvariesfrom thefirst

ls.Securethefourblocks"J"and

p (1)above.Placetwoblocks"G"

heelsandonetothe backofthe

s"F,"8tothefront and8tothe

ts"F"againstthe blocks"G,"in

uallyspacedacrossthecarfloor.

withfive40-pennynails,thennail

h five40-pennynails.Position

G,"betweenthetires.Nailthe

esecuringofthevehicleby fol-

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RYSTORAGE

in.

ft6in.

0lb

ft552.5sq ft

t4834.4cuft

152.365.3

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RTRUCK-TRAILERM25

xesshouldbecon-

estoor revisionsof

ofreferencesandfor

rielcoveredinthis

yindex(Indexto

insSNLsystem)ASFCat.

istsFM's,TM's,

nancepersonnel,

SR'sOSSC's

allistingof

cationspertain-

ists MR's,

TM's,and

-6

andfilmbulletins

alnumberand

ictraining aids,

ELISTS.

ry,M25(T21)

6(T25);

tionmaterials,re-

laneousrelated

materials,gasesand

-19

.

15

sTM9-2800

M21-300

AR850-20

M


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rtractortruck

ransporter

infortractor

tanktransporter

ssisandwinches

tof40-tontank

9-.1767C

erM15,compo-

ilertruckM25 TM9-1767D

equipment

ors(Zenith)...TM9-1826C

kesystems

27A

psTM9-1828A

tictiresand

80

55

0

TM10-570

g,andweldingma-

y theOrdnance

5-25

8-250

eventivemainte-

alsandequip-

cevehiclesFM17-59

FM21-40

M


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RTRUCK-TRAILERM25

R850-10

echanizedand

majorcaliber

and Navy,on

yOperationsand

ociationofAm-

entAR850-18

ndshipmentchart,

M


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ice

ve

bly,

d

val,

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462

RTRUCK-TRAILERM25

ont'd

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72

ystem400

77

53

477

m217

78

m..272

ystem400

M


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RTRUCK-TRAILERM25

val,

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ler)72

282

g..180

m—

ce87

9

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RTRUCK-TRAILERM25

er..

trols

nd

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ERTRUCK-TRAILERM25

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Tm 9-767 40-TON TANK TRANSPORTER TRUCK, TRAILER M25

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