TM 9-882 7-TON SEMI-TRAILER EDWARDS, GRAMM, NABORS

8/22/2019 TM 9-882 7-TON SEMI-TRAILER EDWARDS, GRAMM, NABORS

1/90

GO

NABORS)

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icDomain,Google-digitized

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RDEPARTMENT

ne11,1943

ELCARGO

NABORS)''

onofthe

wardsIronWorks,Inc.,

p.,andW.C.Nabors Company;

UCTIONS

3

eddata....2-44-8

5-79-12

alconditions.8-1013

ceinspections11-1514-15

8

towage

STRUCTIONS

on22-2320-23

tsand

eelbear-

3725-33

PublicDomain,Google-digitized

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3/90

ELCARGO

................38-4234-43

m............43-514456

......52-6057-64

........61-6565-68

gmechanism..66-7069-70

............71-7471-72

..............75-8173-75

rier............82-8376

....84-9177-82

...92-9583

4-85

... ..........8 6


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4/90

UCTIONS

for theinformationandguidanceofthe

gedwiththeoperationandmaintenanceof

ionofthe7-tonSemitrailer,PanelCargo,

nicalinformationrequiredfortheidentifica-

materiel.Themanualisdividedintotwoparts:

nsI throughVII,isforthe informa-

eratingpersonnelof theusingarm.It

ontrolsandequipment,operatinginstructions,

ance,andlubricationinstructions.

onsVIII throughXX,isfortheusing

onsibilityofdoingmaintenanceworkwithin

ctionscontaindescriptionsofmajorunits,

uctionsformakingminoradjustments,re-

atureoftherepair,modification,or

copeorfacilitiesof theunit,theresponsible

einformedsothattrainedpersonnelwith

entmaybeprovided,orproper instructions


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5/90

ELCARGO

LATEDDATA

s3

3,and4).

trailer,panelcargo(2DT)is atwo-wheel

ires.Aspare wheelandtireiscarriedon a

ontofthe body.Aretracting-typelanding

me,andisoperatedbyaworm screwand

edontheright centerside.Auxiliarysupports

of theframeforward.Thebody,whichis

s oftheopen-toppaneltype,witha maxi-

ounds.Theframeiscarriedon aone-piece

mi-ellipticalspringsuspension.Twocom-

toplightsare installedontherear.

thetrailer isdonebymeansof internal

tedpowerbrakes,locatedoneachoftheinner

econtrolledthroughthetractor-trailerbrake

atingvalvelocatedonthe tractorandoper-

oot pedalorhandbrake.

stowedbya tractor-truckequipped

Theupperfifth wheelforthiscoupling,

ngpin,is attachedtothefrontend-of the

MODELS.

B,SC-600,and2-GChavethesame

mitrailermodelsD-ll-BandSC-600have

2-GChasa solid,rectangularaxle.Theonly

emanufactureofworkingparts,anddo not

ntenancebytheusingarms.

s.

ately)5,530Ib

n.

n.

dingsparetire)198in.


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ATEDDATA


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ELCARGO


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ATEDDATA


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ELCARGO

5mph

DuoServo)


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10/90

ON

ntrols5

NONCONTROLS.

crankshaftforthelandinggear is

tionon ahookandis locatedattheright

center.Tooperateit,removefromhook,

ndwhentheholein thecrankislinedup

nkonto theshaft.Loweringthelanding

rningthecrankhandleclockwise;raising

gthecrankhandlecounterclockwise.Todis-

ocedureforengagingcrank.Whenturningthe

eto turnitasfar aspossiblewithoutover-

t,sothelanding gearwillbein fullraised

uspreventdamagetosupport legswhen

1and 2).Inthefull engagedposition,

edtohavethelandinggearlegs slightly

tion.Inthis position,thebackbracesare

nthelandinggearlegsare slightlytotherear

backbracesarein compression,whichmay

.If anydifficultyisexperiencedincoupling

ndinggearlegsshouldbe adjustedtothe

fadjustmentprovided,sothatthe trailerwill

thenecessityofjackingupthetrailer(par.

liarysupportsareattachedtoboth

ar thefrontofthetrailer. Theyarelowered

tch retainer,allowinglatchtoswingfree.

nd,as thelegsswingdown,continueto

odyuntil thechainatthetop ofthelegis

mclearanceforthetractortires.Thebase

hesupport leg,isplaceddirectlyunderthe

ngth oflegbyscrewinghandleclockwise

oinchesclearancebetweenbaseplateand

bodyandloadisdistributedon landinggear

entractor-truckisuncoupled.Theauxiliary

ersingthis procedure.Thelatchmustthen

r,andwingnuttightened.Besurethat the

aysinthedownposition whenthetrailer


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ELCARGO

er,PanelCargoBottom


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ON

AIR)

Coup/ings

tor^truck,andthattheyaresecuredin the

ling(figs.1and 26).

tions.

mpowerbrakes,removethedummy

nnectionsonthetrailerjustbeneaththe

dinsertthetwohose lineswithmalecouplings

attachedtothebackofthetractorcab.The

ofthe centerofthetractoristhe vacuum

rted inthevacuumlinecouplerwhichis on

railer.Thehoseline ontheleftside ofthe

ebrakecontrollineandmustbe insertedinthe

eft frontsideofthetrailer (fig.5).After

onswiththetrailer,thevalveson thetractor

ler brakestofunctionwhenthetractor

openvalvesuntil theconnectionsare

hetractor,beextremelycarefultoclose

sonthetractorand todisconnectthehose


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ELCARGO

gsinto thebrakelinecouplingtoprevent

em.

sert plugonlightjumpercableof

belowsparetireon frontoftrailer(fig.5).

eemergencybrakeapplicationisauto-

vehiclebreakingawayfromthetractor-truck.

s,thecontrollineconnectionsbetweentrailer

broken.Thebreakingoftheselines allows

partsoftherelay andappliesthebrakes

cle.Placechockblocksinbackof

eeljawhandleis inopenedposition,thatis,

eldinplaceby theplungerlocklatch.Check

krodisvisible;this assuresthatthejawsare

tor-truckintopositionunderthetrailer

p thefrontendofthe trailer.Acceleratethe

erfifthwheelkingpinautomaticallylocks

heeljaws,movingthefifthwheeljawstothe

ethetrailerkingpinis safelyengagedinthe

beverifiedby notingtheplungerlockrod

yondtheplungerlocklatchbut mustbecov-

etwo brakelinesandthejumpercablefor

ggear andauxiliarysupports(par.5).

gVehicle.Placechockblocksinfront

nggearandauxiliarysupportsand dis-

nsandlightcable.Disengagekingpinfromfifth

eplungerlocklatchto onesideandpulling

ardtowardthecabuntilit snapsintoplace.

od comesoutoftheholeunder thelatch

atchopen.Movethe tractor-trucksharply

and movethefifthwheelfromunderthe

si mportanttoloadriding,operating

ailer. Therefore,theloadshouldbeas

ible,andthetrailer shouldneverbeloaded

y.Withtheloadequallydistributed,approxi-

adis onthetractor-truckfifthwheel,and

xle,onModelsD-ll-BandSC-600.OnModel

ercentoftheloadison thetractor-truckfifth

e traileraxle.


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SUALCONDITIONS

torcold8

mud10

EHEATORCOLD.

arenecessaryforoperationunderthese

roperuseof lubricants.Forproperlubri-

ons,refertoLubricationGuide,figure6.

RDUST.

andyordustyoperationnecessitatefre-

g,andlubricatingofthetrailerworkingparts.

ICE,ORMUD.

scoveredwithsnow,ice,or inmuddy

achedtothetrailer wheels.Thetrailerbrakes,

ouldbeappliedslightlyaheadof thetowing

ifpossible,skiddingorjackknifingofthe


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15/90

ELCARGO

CEINSPECTIONS

11

13

CTION.

ockblocksareattachedinthe proper

edto75pounds,includingsparetire. Keep

evenlymatchedaspossible.

oosewheelstudcapnuts; lookforgrease

arts.

operatingandholding.Inspecttailand

kenleaves,looseormissing clips,or

.Examineradiusrods forlooseormissing

okenorl ooseparts,andseethatworm

ngpinand plateonthetrailer.See that

jawson thetractor-truckareingoodorder

ctforworn,loose,orbrokenparts.

HALT.

greaseleaks.

,cuts,and embeddedobjects.

heelhubfor evidenceofoverheating.

PERATION.

ionshouldbemadesimilartothat made

rethoroughanddetailed.Defectsthatcannot

ortedtothe nexthigherauthority.Inaddi-

ragraph11, thefollowingpointsshouldbe

ubs foroverheating.


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CEINSPECTIONS

ter,wires,nails,stones,orglass from

s.

sectionsandbrokenstakesor slats.

oken,ormissingparts.

vacuumreservoirandallconnections,

ts.Tightenallconnectionsonvacuumbrak-

agedparts.Replacebrokenlampsandburned-

byapplicationofbrakesafterhook-up

nebrakesfordamaged,broken,ormissing

racksections,latches,looseorbroken

dybolts.

elandingwheels,attachingbolts,cross

ls,andaxleshaft.Seethatthelandingwheels

ecureandoperatingfreely.

ose,broken,ormissingparts.

deandlubricatethefollowingpoints:

ers,radius rodpins,radiusrodfront con-

s,gearbox,andwormbearing.

N.

peated,andinaddition,the following:

wormscrewwithgrease.

els.

bsfromaxle,andinspectthe bearings

or propersealing.Thoroughlyclean,in

bearingcupsandcones.Whenassembling,

rdingtoLubricationGuide.

akepartsfor adjustmentorreplacement

gs.

st.

mpowerline,asoutlinedin paragraph


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ELCARGO

erviceinstructionsforusingarms18

ninstructionsforthesemitrailerarepub-

ndguidanceofall concerned,andsupersede

ustbelubricatedinaccordancewiththe

nedintechnicalmanualsand/orordnancefield

ceismadetoGeneralInstructionSection

ubricationinformation,andtoProduct

orthelatestapprovedlubricants.

sforallpointstobe servicedbytheusing

tionGuide(fig.6), whichspecifiesthetypes

heintervalsat whichtheyareapplied.Sup-

ppearinthenotes.

ONANDSERVICEINSTRUCTIONS

erisa towedvehiclenotequippedwith

s thereforeimportantthattheusingarms

systemsforthesevehiclesinorderto ensure

he properintervalsshownonLubrication

bearingsmustbelubricatedatintervals

e.

rings.Washbearingsandinteriorof

eaning.

eralpurpose,No.2,intobearingsonly,

ntil wheelbinds.Backoffnutslightly

houtsideplay.

ndreplacehubcap.


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d

S


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ELCARGO

RDS.

structionsarecloselyfollowed,proper

actoryresultsnotobtained,areportwill be

cerresponsibleforthemaintenanceofthe

cordoflubricationservicingwillbekept

ationandservicebelow 10Freferto


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STOWAGEONVEHICLE

reinincludestoolsforgeneralcareand

BookforOrdnanceVehicles(O.O.Form7255)

y.Tools,whennotin use,shouldbestored

esprovided.

NT.

rake-adjusting

.WRENCH,wheelnut(with

1%in.

t

ar-

GC


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ELCARGO

TRUCTIONS

N

e23

eandrepairbythecrewand otherunitsof

nedbytheavailabilityofsuitabletools,avail-

capabilitiesofthemechanics,timeavailable,

Alloftheseare variable,andnoexactsystem

ribed.

TENANCE.

aintenancedutiesforwhichtoolsand

ortheusing armspersonnel.Otherreplace-

responsibilityofordnancemaintenanceper-

medbyusingarm personnelwhencircum-

discretionofthecommanderconcerned.

edinthis listofmaintenanceallocations,

ganizationregiments,battalions,com-

dseparatecompanies

).

celightmaintenancecompanies,ord-

ncecompanies,ord-

ancebattalions,and

nceheavymaintenancecompanies,and

cebaseregiments,ordnancebases,

er'splants.

sofservicing,cleaning,lubricating,tight-

gboltsandnuts,and makingexternal

stmentofsubassembliesorassembliesand

s.


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N

tsofremovingthepart,subassemblyor

omthevehiclesandreplacingit with

ebuilt part,sub-

icheverthecasemay

ofmakingrepairsto, orreplacement

art,subassemblyorassemblythatcan

edwithoutcompletelydis-

blyorassemblies,and

ding,orriveting,

liningorbalancing.

ofcompletelyreconditioningandre-.

gin serviceableconditionanyunservice-

ssembly,orassemblyofthe

,riveting,machining,

assemblingand

X

X

d/orreplaceX

X

X

replaceX

replaceX

adjustand/orreplaceX

repairX

EX

page23.


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ELCARGO

ceX

placeX

pairX

buildX

ceX

rX

dX

kediaphragmreplaceX

kediaphragmrepairEX

kediaphragmrebuildX

/orreplaceX

viceand/orreplaceX

airX

eplaceX

epairEX

d/orreplaceX

eand/orreplaceX

reline)X

aceX

airX

ceX

X

X

EX

nsionreplaceX

nsionrepairX

nsionrebuildEX

page23.


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N

h 8th

yreplaceX

yrepairX

yrebuildX

ceX

eX

(withserviceableunit

edwillnormallybeperformedinthe

eechelonsindicatedby"E"maybeaccom-

chelonsinemergenciesonly


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ELCARGO

RTSANDACCESSORIES

es24

CESSORIES.

ganizationsparepartsissuppliedto

placementofthosepartsmostlikelytobecome

eunserviceable.Thesetiskeptcompleteby

rthoseused.Organizationsparepartsare

nomenclaturelists.

sincludetoolsandequipmentrequired

dassemblingastheusing armsareauthorized

ningand preservationofsuchtoolsand

ouldnotbe usedforpurposesotherthanas

nuseshould beproperlystored.


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HEELBEARINGS,AND

ptionandtabulateddata25

oting26

emoval27

stallation28

moval32

emoval33

nce34

stallation35

stallation36

EDESCRIPTIONAND

sareofthepressed steelventilatedtype,

d 7-inchrims.Eachwheelisfastenedtoits

uts.Thestudnuts onthewheelsonthe right-

haveright-handthreads,andthestud nuts

andsidehaveleft-handthreads.Theinner

eldby theinnercapnuts.Theouter wheel

tsandisindependentlyheldby theouter

ssemblyismountedon thespindlebytwo

aringassemblies.Thetiresare7.50 x20,10-ply,

esign.The tubularaxlesonmodelsD-ll-B

withgasketsmountedwithscrews.The

ersontheseaxlesare positionedwithwheel

eelbearingouter nuts,lockedwiththesame

angularaxleonmodel2-GChas athreaded

gthrustwasheron thisaxleisadjustedby

ut securedbyacotterpin.


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ELCARGO

D560S

TD419

UBLESHOOTING.

ent.

ed.

3and35)

re.

60).

LYREMOVAL.

oosenallstudnuts oneachdisk

kunderaxlenear wheelstobere-

ksinfrontandrearofoppositeset dual

esarefree fromground.


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HEELBEARINGS,ANDBRAKEDRUMS

LockRing

eAssembly.Placeagreasedboard

movedandlowerjackuntiltiresrest lightly

erwheelnutsfrominner wheelhubstudnuts,

e assemblyoffalonggreasedboard.Remove

pullinnerwheelandtire assemblyoffalong

EMBLYINSTALLATION.

ssembly.Whilethevehicleisstill

elandtire assemblyintopositiononhub.

enoppositestudnutsalternatelyuntilall

rwheelintoposition withvalvestemopposite

dmounttheouter wheelandtireassembly

uts. Installouterwheelnutsandtighten

lallare wrenchtight.Lowerandremove

studnutsafterrunning50 milesunderload

blyinstallations.

Assembly.Proceedasinparagraph27.

eelandtireassemblyflaton floorwith

ecapandvalvecoreanddeflatetire inner


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ELCARGO

romWheel

opertireironin theslotprovidedinthe lock

pping theoppositesideofthel ockring.Work

ons,andremove.Standthetire onitstread.

e,shovethe rimawayfromthetirewith the

e valvestem.Pullthetireoff, sothatthe

tout.Pullinnertube outoftirecasing(figs.

ould berepairedinaccordancewith

uncturesandtearscausingexposureofcord or

yvulcanizing.Holesininner tubesshould

ng.Hotpatchingor vulcanizingshouldnot

beinflatedequallyandnot operatedwhen

mpingairintotubes,depressvalvemomen-

ydirtin thevalve.Keepcapsonvalvesto

nmatter.Oilandgreasehavea harmfuleffect


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mptshouldbemade tokeepthesesubstances

thrubberequipment.

stallvalvecoreinvalvestemof inner

intirecasing.Sliptire andtubeassembly

mguidingthe valvestemintoholeinrim

celockrimassemblyinpositionandwork

eel.Besurethatthevalvestempoints out-

cesproperdirection.Inflatetireto-correct

nstallvalvecap.CAUTION:Wheninflating

nlooselyaroundthetireat twopoints.This

itisnot securelyfastened,fromspringing

ssembly.Proceedasinparagraph28.

MBLYREMOVAL.

Assembly.Placechockblocksinfront

sto actasbrakesandjackup axlesufficiently

Removewheelandtireassemblyas outlined

s.Unscrewcaponbottomofvacuum

cuum.

earingNuts.

-600.Removehubcapretainingscrews

sket.Avoiddamaginggasket.Straighten

movewheelbearingouter nut,nutlock,inn^r

spindle.

ndunscrewhubcapusingcapwrench

nterclockwisedirection.Removecotterpin,

sher.

Assembly.Graspthedrumand pull

rum assemblyisfreefromtheaxle spindle.

drumwhileremovingtoavoid damageto

GCUPREMOVAL.

oveouterbearingconeandroller

oveinnerbearingfromspinule.Inspectoilseal

rwisedamaged.

acehubassemblyonwoodblockwith


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ELCARGO


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facingdown.Insertdrift intohubopening

oninsideshoulderor edgeofbearingcup.

up.Movelowerendofdrift acrosstooppo-

edriftagain.Byalternatinginthis manner,

ht withthecupbore,anddangerof wedging

ubwill beminimized.Becarefulnottodrive

metal.

AINTENANCE.

ps andconeandrollerassemblieswith

rsfor pits,chipping,andwear.Replace

embly,ifrollersare damagedorworn.

er bearingcupsinhubassemblyfor

Ifanyoneof theseisevident,replacethe

placeany studswhichhavestripped

scoring.If drumsarescored,theymust

oordnancepersonnel.

.Alwaysreplacedefectiveoilsealwith

terconeandroller assemblieswith

,No.2.

GCUPINSTALLATION.

movealloldgreasefrom insidehub

eanhubborewith SOLVENT,dry-cleaning.

odenblock.Startnewbearingcupsquarewith

erinsidediameterplacedso thatitwillbe

nplace.Placeapieceofhardwoodoverthe

untilflushwithouteredgeof hub.Placeold

drivenewcupinuntil itisabsolutelytight

esure thatnewcupisproperlyseated,

thedistancebetweenthebearingcenterand

yofthewheel.Fillthespacein thehub

upswithGREASE,generalpurpose,No.2.

ealloldgreasefromaxle spindleand

NT,dry-cleaning.Cleanouterandinner

emblieswithSOLVENT,dry-cleaning,dry

SE,generalpurpose,No.2.Installouter

earingonspindle.


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ELCARGO

MBLYINSTALLATION.

ssembly.Slidehubanddrumassembly

nto position,carefullysupportingittoavoid

Hub Caps.

-600.Installthrustwasher,innernut,

ustbearings asdescribedinparagraph37.

osecureinner andouternuts.Installhub

withlockwashersand screws.Becarefulnot

ttedwasherandbearingnut.Adjust

ragraph37.Insert newcotterpinandspread

capon andtightensecurelyusinghubcap

sembly.Installwheeland tire

movejack.

Brakes.Replacecaponbottomof

stablishvacuum.

T.

hockblocksinfrontandrear ofoppo-

brakes.Placejackunderaxlenearwheelsto

tiltiresarefree fromground.

s.Unscrewcaponbottomofvacuum

cuuminbrakingsystemsowheels'canbe

t.Withhands,testsidewiseshakeof

bearingsallowonlyaperceptibleshakeof

toturnproperly.

-600.Removehubcap(par.32c(1) ).

ndremoveouternut andnutlock.Tighten

tilwheelbinds, rotatingwheelduringthis

surfacesareincontact.Backoffinnernut

eelrotatesfreely.Installnutlockandouter

ockto secureinnerandouternuts.

hubcap(par.32c(2) ).Straighten

ovewithpliers.Tighten wheelbearingnut

toinsure thatallsurfacesarein contact.

tandinsertcotterpin throughslotinnut


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sitionthatpermitsfreerotationof wheel.

stedgesof nut.

owprocedureoutlinedinparagraph

36b),lowerwheelsto groundandremove


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ELCARGO

data38

ents40

oval41

allation42

BULATEDDATA(fig.10).

sthetwo-shoe,double-anchortype,

ctions.Theactuationofthesebrakesis

ngsystemofthetrailer, whichisconnected

the towingvehicleandcontrolledbyit.The

femalecouplersatthefrontof thetrailer.

RAKESHOESPRING

sembly

oesintheoff positionareagainsttheir

ctwiththedrum,permittingthewheelsto

is brakehasanextendedshaftwitha lever

connectedtothevacuumpowerunit.When

powerunit,theleverandcamshaftare


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kecam.Thiswillspreadthe shoesagainstthe

hebrakeshoereturnsprings andthereturn

illreleasethebrakeswhenthevacuumofthe

enthebrake linkageisinthefully released

mustrestagainsttheir anchors.Conventional

heshoes.

ouble-anchorbrakes

18%in.

endixBKvacuumsystem

VehicleFirst.Itis assumedthatthe

gvehicleisperformingproperlybeforemaking

sonthetrailer (seetowingvehiclemanual).

kesis dependentupontheproperoperation

towingvehicle.

mfrozen.

tioning.

zen.

s.

pment

s.41and

ust

erbrakes

nchors,

erbrakes


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ELCARGO

DJUSTMENTS,

ofthebrake systemisofvitalim-

ngbrakecontrolsystempermitstheshoesto

theiranchorpinsatall timeswhenthebrakes

uplinkageorbacklashcausedbywear,care

PlateandParts

attheshoesreturnagainsttheir anchors,

betweentheshoeends.Thereturnsprings

shoestothereleasedposition,andweakor

aced.

ED.Seethatthebrakelinkageis properly

akedrag.Thespring clipsholdingtheaxle

be tight,andthewheelbearingsmustbe

ntdragdueto loosebearings.

enliningrenewalisrequired,usenew

.

tmentprocedureshouldbefollowed

edonthe trailer.


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ment


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ELCARGO

ewheelandtire assemblyasinpara-

PullRod.Removecotterpininclevis

runitpullrod fromcamshaftleverbypulling

ts.Loosentheanchorlocknuts,and

ndixspecialtool,orsuitabletool, sothatthe

dsfaceeachother.Tightentheanchornuts

keepfrom movingtheeccentricifdesired.

anchorpin islongeronone sideofthe

endcorrespondstothehigh sideofthe

chorpinoftheshoe web.

eCovers.Loosennutandmoveadjusting

eto allowforinsertionofscrewadjusting

holecoverplatefromdrum.

1).Looseneccentricadjusterlocknut.

um clearancewiththeuseofafeelergage

rgageholein thedrum(theshoesagainst

tesshouldbeadjustedfirst,asin paragraph

hliningto drumclearanceattheanchorend,

umclearanceattheadjusting endofthis

ositionedshoe.The0.008-inchand0.014-

ainedbyrotatingtheanchorandturning the

tatingtheanchorsothatthelongendmoves

setheclearancebetweentheliningand the

d decreasestheclearanceattheadjustingend.

tthelong endmovesnwayfromtheaxle

tion.Whenthe0.008-inchand0.014-inch

ightentheanchordowntightbytightening

carenot tochangethepositionofthe anchor.

Nut.Tighteneccentriclocknut,taking

entricposition(fig.11).

osition.Theoppositeshoepositionis

oeanchorandturning theadjustingscrew

and0.014-inch)anchorendandadjusting

ncesareobtained.Tightenanchornutdown

angethe positionoftheanchor.NOTE:

ewdoesnotaffectthepositionof theshoe

centricoperatesuntiltheadjustmentscrew

gainstthedrum,providedthe shoehold-down

againsttheshoeweb.


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adjustmentscrewwithscrewdriveror

otatedby hand(fig.12).Removeallslack

movingpowercylinderleverstowardthe

ovingtheshoeofftheanchors.Powercylinder

st lineupwithclevispin holeinlever.

wuntilbrakeisfreeof liningdrag.

Covers.Replaceadjustingholecover

cover.

Installwheelandtireassembly,and

aph28a.

Wear.

oadjustmentsinthisbrakingsystemto

ngwear:

ent(fig.11).Centralizesthebrakeshoes

g.12).Takesup theclearancebetween

rum.

keShoeReturnSpring

b).

entheeccentricadjustmentlocknutand

directionofforwardwheelrotationuntil the

tetheeccentricin theoppositedirectionuntil

ngdrag.


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41/90

ELCARGO

kNut.Holdeccentricinpositionand

Besurethattheeccentricpositionis not

elocknut.

.Loosenscrewonadjustingholecover,

oopenadjustinghole.Insert screwdriver,and

otchedwheel)untilbrakesdrag.Then back

heelisjust freeofliningdrag(fig. 12).

wholecover,andlowervehicletothe

.

(Ifone wheelistighterthanthe other,

eel.Thiswillpreventadraggingbrakein

djustingbrakesforliningwear,nevertake

od.

semblyReadyforRemoval

LYREMOVAL.

Assembly.Jackupvehicle,andremove

sin paragraph27.

dSpring.Placehooked-endtongof

imary-secondaryshoespring.Placeother


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42/90

nbrakelining.Compresstongsenoughto lift

. 13).Thenremovespring.

tandSpacerPinWashers.Remove

s.Thenlift offanchorstrut.Removecotter

onspacerpins.Removenutsand liftoffspacer

y.Removecotterpininadjustingscrew

screwspring.Rollshoeassemblyoffbacking

springduringopeiation.

G.

G

semblyDisassembled

kprimaryshoereturnspringfromshoe

preadshoesapartandremovecamassembly.

latona bench,withadjustingscrewendof

ustingscrew(awayfromoperator)until

epivotnutsand separateshoes(fig.15).

LYINSTALLATION.

acetheshoesona benchorflatsurface

esinshoesareawayfromyou (primaryshoe

ew.Lubricatepivotnutsandthethreads


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43/90

ELCARGO

Pickuppivotnutthat hascotterpin

tinsecondaryshoeatleft,with cotterpin

erpivotnut(withundercutshoulder)in

shoulderend up.Threadadjustingscrew

g towardstheoperator)tofulltravelof

datleft,right-handthreadatright.

acecamassemblyinposition(curved

.

gPlateInstalled

ookprimaryshoereturnspringto shoe

assemblytobackingplate,hookingreturn

ngthis operation(fig.16).NOTE:Before

bricateallfrictionalpoints:wherepivotnuts

e;whereshoewebscontactrestpinsand atthe

ment;onthecambetweenthecamplates

esenterthecam,andalsothe campinonthe

rlubricateanypoint,as excessivelubricant

nd causeerraticbrakeaction.Positionadjust-

dspread cotterpin.Positionanchorpinstrut.

ns,curlingcotterpins aroundanchorpins.

andnuts.Adjustnuts loosely.Withspring

ondaryshoespring.Tightenspacerpincastel-

erpinwasherscanbeturned withyourfingers.

spread.


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44/90

.Looseneccentriclocknutandrotate

sbearingagainstthe lowestpointofthe

eration,theshoesdonot shifteasily,there

tthe spacerpinwashers,andreadjustments

ocedureoutlinedinparagraph40b.

ssembly.Reassembletireandwheel

par.28).


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45/90

ELCARGO

M

stem43

ents45

er49

TAFORSYSTEM.

operatingsystemisattachedtothe trame

raxle.Itcontrolsthe actionofthebrakes

maticapplicationintheevent ofabreakaway

ingvehicle.Theprincipalpartsconsistof

alecouplers,avacuumreservoir,acheck

versionvalveandtwopowercylinders.

tion.Thebrakeoperatingsystemcontrols

shoes.The actioniscomparabletothatofan

ingorclosingaswitchto startandstopan

ntrollinesareconnectedtothebrakingsys-

hichcontrolsthebrakingoperationonthe

tthefrontofthe trailerconnectthetractor-

eat therightisthe constantvacuumline.

ntrolline. Airisremovedfromthereservoir

erve.Airandvacuumarecontrolledbya con-

is controlledbythetractorbrakesystem.

ambers,locatedontheaxle,actuatethebrakes

(fig.17).

peration.Acheckvalveintheright-hand

cbrakeapplicationbytrappingthevacuum

s springloadedintheopen positionfor

awaycausesthevalvetocloseand,asthe left

otheconversionvalveactuatingittothe


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46/90

M


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47/90

ELCARGO

vacuum

rd

mtype)D64

gVehicleFirst.Itis assumedthatthe

emade onlyAFTERthetractorunithas

atisfactory.Itisalsoassumedthatoriginally

ationinquestionoperatedsatisfactorily

ehiclemanual).

tBrakes.

ace.

conver-

ders.

conver-

ervoir.

etween

tend

cuum

ve.

erunit.

tioning.

etween

tend

between

er

ace.

ace.

ace.

ace.

ace.


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48/90

M

werSystem.Testthetrailerpowersys-

gagesandthe necessaryfittingsforconnecting

cuumlinesasindicatedinfigure17.

1intovacuumreservoirline behindcheck

lsystemconnections.

2intoline betweenconversionvalveand

yatcylinderend,maintainingnormalconnec-

rsandvalve.

inder.Forexample:Installgage number

ntests;theninstall gagenumber2inline of

test.Thisis necessarybecausethelinetoone

,whilethelinesto theothercylindermaybe

tareasonableidlingspeedfor atleastone

keapplicationnotinggagereadings.Gage

ceablefluctuationaspedalis beingdepressed,

vacuumatalltimes.During acomplete

umber2shouldindicatearise invacuumfrom

r70 percentofreservoirvacuum,asindicated

1 toreturntomanifoldvacuum,after

reapplied,indicatesafaultyPTcheckvalve,

mline.

2 toshowanincreaseinvacuumduring

ltyconversionvalveorarestrictioninthe

elinebetweentheconversionvalveandthe

umber2shouldreturnto azeroreading.

o returntozeroindicatesfaultyconversion

ora restrictioninthetrailercontrolline.

ppedwith ahandcontrolvalve,aswellas

kforpedaloperationandthencheckfor hand

ADJUSTMENTS.

etheaircleanerforcleaningand inspec-

9 band49c).

dtightenallbolts ofthebrakingsystem

over threemonths(fig.17).

Parts.Checkthebrakeoperatingparts,

msandlinkageforfreedomofmovement,

nt,andforfreeingupasrequired


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49/90

ELCARGO

ylinderPistonRod.Whenthetravel

eeds3inchesonfull powerthebrakeshoe

0c).

ng

wofemalecouplingslocatedonthefront

tthepowerbrakesystemofthetrailerto power

gtractor.Theonlyparts ofthefemalecouplers

ber ringsattherear ofthecouplerswhich

alecouplingof thetractorandthefemale

8).

Theoldringis removedwithasharp-

.Thenewrubberringis installedinthe

tin withthefingersuntilit fallsintoposition

hebackofthe coupler.

mreservoirislocatedunderthetrailer

aincrossmembers.

eservoirofvacuumonthetrailerwhichis

keapplication,orforbreakawayemergency

cuumreservoirismerelyasealedcontainer

ervicerepair parts.

oval.Loosenscrewsinthehose clamps

oirconnectingthereservoirwiththecontrol

eof themalehosenipples.Unscrewnutson

acketsholdingthereservoirinplace.Remove

ndlift reservoirout.


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50/90

M

N

NECTION


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51/90

ELCARGO

llation.Positionreservoirinbrackets

etogetheraspossible.Insertbracketbolts and

eplacerubberhosesonmale hosenipples.

mps.

.

valveintherightvacuumlinei smounted

ecrossmembersanddoesnotfunctionatall

n.Itdoes,however,provideforautomatic

thebrakesincasethetrailershould break

or.

alveisspringloadedin theopenposition

cidentalbreakaway,causinghosestopart,

nd strikesinternaldiaphragm,closingvalve,

nreservoir.Airenteringtheleft-handline

etothefullyappliedposition.

DSC-600.Ontheoppositesideof the

eckvalve,unscrewnutsontheboltholdingthe

ember.Loosenscrewinhoseclampaboveand

uts.Loosenscrewinhoseclampatfront of

reeofmale hosenipple.Holdcheckvalve

der crossmemberwithrighthand,pulling

.

enhoseclamponcheckvalveanddis-

heckvalvefromvacuumreservoir.

on.

DSC-600.Withthelefthand liftcheck

oposition,and slidesectionofhosethrough

Placerighthandundercrossmemberand

pler,atthe sametimefittingboltoncheck

enutsonboltand tighten.Replacehose

ale hosenipples.Tightenscrewsinbothhose

wcheck.valveontovacuumreservoir.

leoncheckvalveandtighten hoseclamp.

IRCLEANER.

rsionvalveaircleanerisadry-type

rfilterelement,and isconnectedtotheair

ve.


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52/90

M

lveAirCleanerCross-Section

erfilterstheoutside airadmittedtothe

ssofcurledhair,andprotects-the insidework-

omdustandforeignmatter.

DSC-600.Unscrewlocknutonelbow

d liftoff.Theaircleaneris disassembledby

ndliftingoutparts.

enhoseclampandremovehosefrom

oveaircleanerbyremovingbolts attaching

DSC-600.Placeaircleaneronelbow

ircleanerto crossmemberandreinstall

enhoseclamps.


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53/90

ELCARGO

CTION* RA PD302663

lve

rsionvalveisinstalledbetweenthepower

evacuumreservoir.Itcontrolstheair vacuum

ragmsintheapplicationofthebrake shoes.

oseparatediaphragmchambersinthe

amberisdividedintoanupperandlower

ediaphragm.Theuppercompartmentisthe

isconnectedtotheconstantvacuumline.The

controlsideandis connectedtothecontrol

ercylinders.Whenthebrakesareapplied,air

rimmediatelybelowthetopdiaphragm

isforcesthe diaphragmupwardtoclosethe

nthevacuumport.Asthevacuumportopens,

hedbetweenthepowerchambersandthe

evacuumportopen,vacuumbuildsuponthe

mto provideadownwardforce.Whenthe

nthelowerdiaphragmchamberbalancethe


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54/90

M

eupperdiaphragm,thevalveseeksits hold-

osed).Thisbalancingactioncontinuesuntil

applied.

oval.Removeaircleaner(par.49 c).

mpatbottomofconversionvalveandtwo hose

reefrom malehosenipples.Unscrewnuton

valvetorearmaincrossmemberandpulloff.

ation.Placeconversionvalveonbolt

ember;replacenutandtighten.Replacethree

hosenipplesandtightenscrewsin hoseclamps.

d).

AIRCLEANER

SECLAMPSJ1HOSECONNECTION

werCylinderDiaphragmCoverScrews

wopowercylinderslocatedontheaxle

hoesbyacamshaftconnection.

ylinderconsistsoftwopressedsteel

dadiaphragmrod.Thediaphragmdivides

ochambers.Thechamberatthepull rod

mber,andisopen toatmosphericpressure


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55/90

ELCARGO

NG

F

LF

R

R

WASHER

R

ANDLOCKWASHER

LOCKWASHER

ylinderandLinkage


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56/90

M

nthehousing.Thechamberatthe opposite

er,andisconnectedbyhose totheconversion

chedtothehousingatthediaphragmrod

nceofdirt orwaterintotheatmospheric

inthevacuumchamberinsuresfullreturn

easedposition.Whenthebrakesareapplied,

cuumchamber.Thedegreeofvacuumbuilt

orbrakeapplication,andactuatesthecam-

thebrakeshoes.NOTE:Theonlyservice

he diaphragm,whichissubjecttodeteriora-

al.Removecotterpininclevispinandthe

moveclevis.Removefournutsandlock

cylindertomountingbracketandremove

on.Insertpistonrodthroughthe

untthepowercylinderonmountingbracket

s.Adjustpullrod yoketolineupwith con-

gall slackandlostmotionatcam.This is

thepowerlevertowardspowercylinderwith-

mtheanchors.Connectyoketocamlever

n (par.40b(2) (h)).


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57/90

ELCARGO

OLTS

LY

OLT

E

MBLY

RSPACER

T,NUT

D

stem


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58/90

data52


rameiscarriedon theaxlethrough

pespringswithhelpersprings.The suspension

ods,spring,andaxleattachmentparts,aswell

hare attachedtotheframe.

-600.Theaxleisof tubularconstruction

dtopreventuneventirewear.The spring

plateflangesareweldedtotheaxle.

sof solid,rectangularconstructionand

reventuneventirewear.Brake-backingplate

xle.The springseatsaredetachableandare

ressedintodrilled holesintheaxle.

eyelessor shackleless,consistingofthe

spacerplate,andfiveoverloadspringleaves.

ssembledas oneunitbythecenterbolt and

springsarealsoassembledas oneunitbythe

clips.The topoverloadspringleafcontacts

ertheframe.The topmainspringleaves

whichholdsthespringsi nalinement.The

espring seatsandheldin positionbypressure

mblies(fig.24).

odassemblyis fullyadjustableand

nuckle,bolts,washers,sleeves,andnut.The

ted tothefrontspringhangerand therod

Adjustmentoftheradiusrodspositionsthe

ralinement.Theaxlerisesandfallswithin the

ffortis transmittedtothetrailerframe


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59/90

ELCARGO

o.SC-600.

AxleCo.

bular

2l l/16in.inner

solid)

2n/16in.inner

ain5leafauxiliary

n.x3in.auxiliary-%6in.x3in.

emedy

ng.

ebrokenleaf(pars.57and

ndtighten U-bolthanger

centerboltnut(par. 58a).

pbolt nuts(par.58a).

U-boltnuts(par.58 b).

ovespringandreplacecenter


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60/90

edy

dadjustwheelbearings

usrod forwornbush-

and

ars.59and60).

htenallnuts.Alineaxle(pars.

llnuts (par.56).

ontoa levelsurface;lowerparkinggear

anddisconnectfromtractor.

DSC-600.Removeretainingscrews

osecenterpointinend ofaxle.

rewhubcapwithhubcapwrenchand

pointinendof axle.

Removeouterwheelsonly(par.27).

fig.25).Dropaplumbline fromcenter

ndmakeamarkonthe floordirectlyunder

lumbline fromthecenterpointofthe kingpin

ethedistance"A"and"B",of thepointsestab-

measuringtape.Distances"A"and"B"must

.NOTE:Thefloor,orground,mustbelevel

pectthespringassembliesfordamagedparts,

fortightness,beforeproceeding,asthese

osition,andtheboltsholdingthespring assem-

ght.

NOTE:Ifdifferenceinalinementdimen-

s greaterthany%inch,theaxlemustbe

hekingpin.This isaccomplishedbyadjusting

terdimensions("A"or"B",fig.25).To

",fig.25)loosenlockand adjustingnutsat

awup onadjustingnutatrear ofrod

proceduresuntilthe differencebetween("A"


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61/90

ELCARGO


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62/90

ysinchor less.Aftercorrectadjustment,

dlocknutson rods.

DSC-600.Installhubcap;insertr etain-

whubcaponand tightensecurelywith

mer.

oceedasin paragraph28.

AL.

parkinggeartoextremeloweredposition.

ear.Placeblocksinfrontandbehinddual

serviced.Jackframehighenoughto relieve

UPFRAMESOTHATITIS SAFETO

LE.

emovecotterpin,andcastellatednut,

ap outbolt.Removecotterpinandcastel-

earbolt.Tapoutbolt.Removeradiusrod

ATION.

4).Placeradius rodassemblyinposi-

slineupwithhole inspringseatboss.Tap

atednuton boltandtightennut.Locknut

ckcotterpin. Positionradiusrodsothat rod

rontspring hangerholesandinstallbolt.

oltand tightennut.Installcotterpinin nut

Removeblocking;lowertrailer;andremove

t(par.54).

AL.

asinparagraph55 a.

bly.Removenutandlockwasherfrom

pout bolt(driftandhammer),andremove

tsfromU-boltsandpullU-boltsfromspring

springpressureplates.Liftoverloadspring

nutis freeofrecess,andremove.Slidemain

,untilfrontendis freeofhanger,andlowerto

emovenutsfromspringclipboltsand

.Removenutfromspringcenterboltandpull

rokenleaf.


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63/90

ELCARGO

ATION.

mblespringleaveswithnewleafin

nd insertnewcenterbolt.Clampallleaves

puntilcenterboltnutcanbestarted oncenter

erboltnut.Install springclipbolts,spacers,

uts. RemoveC-clamp.

Slidemainspring assemblyforward

springhanger;thenrearward,untilboth

ds.Positionmainspringon springseatwith

pringseatrecess.Placespringcenterplatein

ringassembly.Positionoverloadspring

platewithcenterbolt nutinrecess.Install

s;tightenU-boltnuts.Lowertrailer.Slide

olt,andinstall boltinrearspring hanger.

bolt.Tightennut.Removejackandblocks.

.Lowerlandinggear andauxiliary

weredpositions.Raiserearendof trailerby

nwrappedaroundrearof frame.Raiseunit

the tensiononthespringsand blockup

LineConnections.Loosenscrewinhose

omconnection.

ngerBoltandDisconnectRadiusRod

ckwasherfromrearspring hangerbolt(fig.

ovespacer.Removenutfromradiusrodrear

ove.Detachrearofradiusrodfromspring

dWheelAssembly.Raisetrailerframe

her,androll axle,brake,springandwheel

e.

blyfromAxle.

DSC-600.RemoveU-boltnutsfrom

tof springpressureplatesandspringseats.

omsprings.Liftspringsfromspringseats and

eedasinparagraph59 e(1).After

ovespringseats,andbecertainthat dowelpins

xle sothattheywillnot bemisplaced.


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64/90


erBearingAssembly.Removeinner

emblyfromaxle.Cleaninnerbearingcone

OLVENT,dry-cleaning.Drybearingand

E,generalpurpose,No.2.Driveoil sealoff

dle.

sembly.Proceedasinparagraph41.

haftControls.Remove(rightandleft)

sfromcamshaftcoupling.Removecamshaft

mbly.Installbrakeshoeassembly

paragraph42.Installcoupling.Position

bolts,hammersandnuts.Tightennuts.

eConnections.Replacethenutscon-

swiththebackingplateand tighten.

rBearingAssembly.

NDSC-600.Slidenewoil sealoverspindle

oulder.Slide innerbearingconeandroller

tapbearingassemblytightagainstoil seal.

wfeltin grooveinoilseal,or replace

,ifold oneshowssignsofwear,andslide

ainst axleshoulder.Slideinnerbearing

verspindleandtap bearingassemblytight


onAxle.

DSC-600.Placemainspringassembly

withcenterboltnutrestingin seatrecess.

ntopof mainspringassembly,andplace

withcenterbolt nutrestinginrecess.Insert

esandspringseat. Installandtighten

pringseatson axle,fittingthemover

withaxleassemblyasin paragraph60e(1).

WheelAssembly.Rollaxle,brake

yintopositionundertrailer frame.Lower

ront endsofspringsintofront springhangers.

runtilrearspring hangersstraddlethetop

espringhanger lowerwearplatescontactthe]


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65/90

ELCARGO

hainHoist.Removeblocking.Lower

hainfromrearofframe.Retightenall U-bolt

dRearSpringHangerBolts.Install

inghanger.Installlockwasherandnut on

t.Positiondisconnectedendofradius rod

thholein springseatboss.Connectrodto

castellatednutonrodboltand tightennut.

dbend backcotterpin.

paragraph54.


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66/90

data61

ents64

BULATEDDATA.

ggearisattachedto theundersideofthe

s usedasatemporarysupport,or whenever

mthe tractor.Thelandinggearlegsare

commodatevariationswithwhichthetrailer

e.

andinggearis operatedthroughaworm

handcrank,locatedontherightside ofthe

dlefromcarrierhook;swingupwardand,

kislinedupwith theshaft,pushcrankonto

ningcrankina clockwisedirectionand

counterclockwisedirection.Thetrailershould

groundwiththe landinggearwheelsdown.

etractedpositionbeforethe trailerissetin

Hard.

medy

sing.Lubricate

Oil

.Straightenorreplace.

Straightenorreplace.

perate,

Adjust

Replace

boltsReplace


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67/90

ELCARGO


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68/90

Removenuts,washers,andboltfromscrew

tterpinandpinfromlowerleg. Removebraces

meBrackets.Removecotterpinsfrom

utpins. Thelandinggearassemblymaythen

kets.

mLowerLeg.Removethreenuts,

legin position.Removelegs.

vebolts,nuts,andlockwashersfrom

dwithwrench.Slidewheelsfromaxle.

xleclampingboltsatthelowerendof the

emovenuts,lockwashers,andbolts,

egs,andremovebraces.NOTE:Crossbraces

ovingcenterbolt.

DJUSTMENTS.

ENT,dry-cleaning.

tures.Checkbackbraces,crossbraces,

ordistortion.Straighten,orreplace,defective

ngerpins.Inspectthreadsonbolts andnuts,

burred.

ould beadjustedforlengthsothat they

esoff thegroundwhenthetractor-truckand

ground.This adjustmentismadebyremov-

andreplacingthemintoholeswhichgivethe

cethecrossbraceson thelegssothat

nstallbolts,nuts,and lockwashers.NOTE:

bolts soliduntilaxlehasbeen installed(fig.

roughthe legclampbearingssothat

distanceoneachside ofthelegs.Tighten

ckets.Positionthelegsin frame

acketpinthroughbracketandleg bearing,


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69/90

ELCARGO

werLeg.Positionupperlegintolower

s andtighten.

eelsonaxle.Position hubcaponaxle

ndinstallbolts,nuts, andlockwashers.

tionbackbracesonscrewnutassembly,

dtwonuts.Position lowerbracetolower

rpin.


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70/90

NGMECHANISM

ggearoperatingmechanismisattached

ocentralframecrossmembers.Theprincipal

ank,handcrankshaft,coupling,alongworm

e bracketattached,"whichisconnectedtothe

Apairofmiter gears,onegearonthe hand

ewormscrewshaft,providesthemeansfor

g.26).

rankhandleineitherdirectionrotates

ndguidebrackets,whichareconnectedto

es,followthethreadof thewormscrew,

thelandinggear,dependingon thedirection

overPlate.Removenutsfromcover

verplate(fig.26).

nnectingSleeve,Crank,andShaft.

washerfromeachendof thesleeve.Pullhand

ngandremovesleevefrommiter gearshaft.

terGear,ThrustBearing,andShaft.

hubanddriveshaftfromgear.The thrust

shaftarethenremoved.

ustBearing,andSleevefromWorm

mendofwormscrewshaft,and driveout

hub.Thegear,thrustbearing,andsleeve may

gthegear offtheendofthe wormscrew.

earThrustBearing,WormScrew,and

olt,nut,andlockwasheratrearofworm

ormscrewbackuntilthethrust bearingis

movebearingfromendofwormscrew.Then

idebracketfromthe housing.


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71/90

ELCARGO

ketfromWormScrew.Holdtheguide

screwuntilbracketis freefromtheworm

rtsandreplaceif defectiveorworn

VENT,dry-cleaning.

wormgear teethforcracked,chipped,

cedefectivegears.

ndsleevefor wearandbentwormscrew.

ethandwormscrewnutthreads.

benthandle andshaft.NOTE:Theworm

one pieceweldedtotheframeandcanonly

eweldloose.

WormScrew.Startthe guidebracket

dholding thebracket,turnwormscrewuntil

crew(fig.26).

deBracket,andRearThrustBearing

tbearingon therearendof thewormscrew

ndbracketassemblyin thehousinguntilthe

theboltholesin thehousing.Securerear

bolt,nut, andlockwasher,throughrearend

Bearing,andSleeveon Worm

hrustbearing,andgearonthe frontendof

hekeywayonthe wormscrewshaftand

ndsecurewithjamnut.

Gear,Thrust BearingSleeveand

ringandsleeveon theshaftandinstallin

he gearteethinmesh,tapthe gearonthe

metimeliningup thetaperpinholesin the

ebyinserting anddrivinghometaperpin.

ectingSleeve,CrankandShaft.Slide

hegearshaft,andthe handcrankshaftthrough

lcrankholderonhandcrankshaftandenter

connectingsleeve.Lineupthe boltholesand

washers.

erPlate.Positioncoverplateon the

tallnuts.


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72/90

data71


rylandinggearislocatedon bothsides

t,andisused tohelpsupporttheload when-

edfromthetractor.Thelegsareadjustablefor

accommodatevariationswithwhichthetrailer

e.

rysupportisoperatedbyunscrewing

the latchholdingituprightagainstthe body,

e bodyuntilthechainatthe topoftheleg

mclearanceforthetractortires. Swingleg

ectlyunderballsocketofleg, solegwillfit

stlegto desiredlengthbeforeuncoupling

proximatelytwoinchesoffthe baseplate,

rtswill notcarrytheentireload whentrailer

Raisebyreversingprocedure.

ards

tesHard.

emedy

ewGrease

ghtenorreplace

screwwingnutandreleaselatchholding

ullawayfrombody,keepingleg inupright

e lowerlegwiththeleft hand,helpingto

ate.Turn legclockwiseonjackscrewuntil

pperleg withjackscrewinvertical

ckscrewand turncounterclockwise(fig.27).

tchandtightenwingnut.


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73/90

ELCARGO


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74/90

data75

m76

7

andstoplightremoval78

andstoplightinstallation79

andstoplightsealedlampremoval...80

andstoplightsealedlampinstallation81


diagramshowsthecompletewiringfor

cationoflights.Two combinationblackout

edat rearofthetrailer.Eachl ighthastwo

nbereplacedbyremovingthe screwsonthe

ricalsystemfunctionsthroughtheelectrical

or-truck,andafemalesocketmountedinthe

emberofthetrailer providestheconnection.

em.

OUTSTOPANDTAILLIGHT.

43X Model:951-1-6.

8040 Upper8041.

c. Model:3604.

ORSYSTEM.

emedy

eanandtighten

circuitforbroken

ngReplacebatteryintowingvehicle

hicleCheckwiring

esealedlampunits

YSTEM.

sofreplacementofdefectivepartsofthe

viceableparts.


/http://www.h


use#pd-google


75/90

ELCARGO


/http://www.h



76/90

ks,wornorfrayedi nsulation.

erminaland socketplugs.

eirproperlocationtoeliminatethe pos-

tenloosewire-holdingclips.

orlooseconnectionatterminalposts.

ctriccableplugintrailercouplingsocket.

ctor-truckandseeifcontacthasbeenmade.

ection.

IONTAILANDSTOPLIGHTRE-

ckthered(stop)plugfromthe upper

wisttotheleft anddisconnect.Unlockblack

etofthe lightssimilarlyanddisconnect.

y.Removenutsandlockwashersfrom

cketandlift lightassemblyfrombracket.

IONTAILANDSTOPLIGHTIN-

ositionthelightassemblyon bracket

nd lockwashers.

d(stop)plug inuppersocketoflight

right.Insertblack(tail)plugin lowersocket

IONTAILANDSTOPLIGHT

ethescrewsattachinglightcovertolight

eedasinparagraph78.

desealedlampunitsfromlampbody.

IONTAILANDSTOPLIGHT

ON.

sealedlamp unitsintopositioninlight

overonlightbody,lining upscrewholes

dasinparagraph79.


/http://www.h



77/90

ELCARGO

IER

isboltedtoa steelbracketmountedon

hebody.Threestudsand nutsonthebracket

dtire tothebracket(fig.2).

kentoseethat thenutsholdingthesteel

hoseholdingthe sparewheelandtireto the

times.


/http://www.h



78/90

.

otype.Themainpartsconsistof aplat-

panelassemblies,andatailgate,bolted

remadein onesectionhavingninesupport

singlepanelwithfoursupportstakeshaving

hesidepanels.The bodypanelsareheldin

the stakes,whichfitintostakeclamps

outriggersandbolsters.Rearearnerangle

es,heldby bolts,jointhefrontand side

hetailgateisattachedtothe platformby

hinges.

kenordamagedboards.Tightenall body

amineanglebracesandstakeclampsfor

missingbolts. Inspectforbrokenbodypanels.

AL(fig.30).

gleBraces.Unscrewnutsandfreerear

Removenutsandbolts fromright-and

.

olts.Unscrewnutsandremoveallclamp

ptthoseateachcorner.

womenarerequiredforthis operation;

ttherear.Removenutsand clampboltsfrom

manatfrontsteadies panel,removeboltsfrom

paneland lowertoground.Repeatoperation


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79/90

ELCARGO


/http://www.h



80/90

IER

moval


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use#pd-google


81/90

ELCARGO

emovenutsandclampboltsholding

ront paneloutofpocketsandlowerto

ATION.

re frontpanelstakeclampsarein

,replaceboltsandnutsand tighten.

de panelongroundwithstakesup.

s fittedonthestakeandlocated% mc^

akereinforcingplate.Liftside panelinto

hend.I nstallendstakeclampboltsfirst.

takeclampbolts.Tightennuts.Repeaton

lnutsonbolts ofrearcornerangle

ening.

Boltsides tofrontpanelbyinstalling

efthandfront postangles.Tighten.

Securestakesfirmlybytighteningall

ovetailgatechainpinsfromtailgatelugs

pinsin mainpinandremovemainpinfrom

ailgateduringthisoperationsoit willnot

dbedamaged.Liftofftailgate.

ON.

tailgatefittinghingesectionson tail-

her.Pushmainpinthroughhinge.Install

cure.Replacetailgatechainpinsi ntailgate

e.

VAL.

ovetailgateasinparagraph88a.

andThresholdAssembly.Unscrew

tehinge andthresholdassemblytobolster

ailgatehingeand thresholdassembly.

dFloorBoard.Unscrewnutsandre-

ughskidstripsandbolsters underneathbody.

oveboltsprojectingthroughwoodflooring.

ovedislocatedoverupperfifthwheelplate,


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82/90

dscrewstromthatportionofthefloor. Pry

ft out.Pryfloorboardslooseandl iftout.

LLATION.

earStrips. Placeallfloorboardsin

andoutriggersofplatformassembly.Place

onthefloorslots.

Chassis.Install boltswhichextend

achnutsandtighten.Alsoinsertbolts which

andbolstersunderneathbody;attachnuts

dtobe replacedisoverupperfifthwheel

sandtighten.

dThresholdAssembly.Attachscrews

lgateas inparagraph89a.

s onundersideofplatform.


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use#pd-google


83/90

on,.94

ance95

(fig.31).

e istoprovidea foundationforthe

fpressedsteel,rivetedandweldedtogether.

hebracketsfor thesprings,radiusrodsand

ebodycrossmembers,outriggersandthe

kingpin.

gedonlyby extremeoverloadingor

ntalmeans.

sinframeor atwelds.Whenfound,

l.

loose ormissingbolts.

ESCRIPTION.

composedofakingpinweldedorriveted

nturn, isweldedtotheframe.

AINTENANCE.

lplatefor cracks.Whenfound,notify

lkingpinfor wear.Inspectkingpinflange


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use#pd-google


84/90

ELCARGO

RELISTS.

rgo(EdwardsIronWorks)SNLG-544

rgo(GrammTruck&

rgo(W.C.NaborsCom-

ubricatingmaterials,recoil

cellaneousrelateditemsSNLK-l

dingmaterials,gasesandre-

tSNLN^19

clatureListsarelistedabove.

s maintainedasthe

SupplyIndex"OPSI

NS.

ingFM21-6

-565

10-580

nitsTM10-560

850-15

nsTM10-545

10

ehiclesandequipmentFM5-21

icating,andweldingmate-

ed bytheOrdnanceDe-

nmaterialsandequipment..TM3-220

oredForcevehiclesFM17-59


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use#pd-google


85/90

ecautions,accidentsTM10-360

attackFM21-40

sFM5-25

ctionsforordnancematerielOFSB6-Series

nanceTM10-525

ecautions,accidentsTM10-360

neumatictiresandrubber

M10-520

ocedure:Materielinspection

clesAR850-10

gofmechanizedandmotor-

o,majorcaliberguns,for

dNavy,onopen top

perationsandMain-

ssociationofAmerican

quipmentAR850-18

rageandshipmentchart

-6


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use#pd-google


86/90

ELCARGO

8

7

t33

2

e20

er

tions44

ments47

44


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87/90

5

8

6

4

s4

nance..20-23

oplight

3


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88/90

ELCARGO

7

70

echanism

ns16

7

chanism.70

023

3

g4

4

er51

chanism69PublicDomain,Google-digitized

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89/90

6

chanism.69

7

9

9

9

chanism.69

6-27,29

es,

sts84


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90/90

ELCARGO

TARYOFWAR:

ls,seeFM21-6)

rg/access_

use#pd-google

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