tm 9-883 1-ton trailer
TRANSCRIPT
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YTECHNICALMANUAL
Y
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MYTECHJUCALMANUAL
S3A,12March1943
MYAUGUST1943
tPrintingOffice
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ugust1943
CargoandWaterTrailersis published
danceofall concerned.
TARYOFWAR:
(2); Bn9(2);IBn 5(3);C9 (8);
ls,seeFM21-6)
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ANDWATERTRAILERS
NGINSTRUCTIONS1
2
edData2-43-12
5-713-14
ualConditions..815
veMaintenance
3
ENANCEINSTRUCTIONS
on16-1724-30
ntiveMaintenance
38-42
bly25-2743-55
heel28-3456-60
61-66
ndWheelbearings46-5367-73
74-79
480-83
... ........... 86
TM9-883A,12March1943.
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ANDWATERTRAILERS
RATINGINSTRUCTIONS
publishedforthe informationandguid-
ng armschargedwiththeoperation,main-
ofthismateriel.
ionoftheall-steelcargo,woodbodycargo
nualcontainstechnicalinformationrequiredfor
careofthemateriel.The manualisdividedin
onsIto VI,inclusive,Paragraphs1to15,in-
ratinginstructions.PartTwo,SectionsVIIto
16to64,inclusive,givesvehiclemaintenance
ersonnelchargedwiththeresponsibilityof
withintheirjurisdiction.
atureoftherepair,modificationoradjust-
or facilitiesoftheunit,theresponsibleordnance
dsothattrainedpersonnelwith suitabletools
ovidedorproperinstructionsissued.
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LATEDDATA
s3
er-tiredvehicleisdesignedtocarryvaried
ng2,000poundsevenlydistributedoverthe
ndto carry250gallonsofdrinkingwaterfor the
sa drawbarwhichissupportedbyaretract-
hetraileris uncoupled.Theparkingwheelis
thedrawbar,andswingsupor down.Aspring
eupordownposition.The frameiscarriedona
mi-ellipticalspringsuspension.Thecentersof
eaxlebymeansofplate andboltassemblies.The
resupportedbystationarybrackets.Therear
shacklesheldinbracketsmountedtothe body.
embliesaremountedontheunder sideofthe
hemain springbumperplates.Twocombination
ghtsandstoplightsare installedontherearend
atthe leftsideofthetrailer. Thewheelsare
chareoperatedbyahand leverlocatedonthe
rtherearof thebody.Thesebrakesaretobe
only.Thetrailer hasalunetteeyeon itsdraw-
tmentforheight,whichcanbe coupledtoany
withastandardArmypintlehitch.
MODELS.
traileris madeupofformedsheetsteel,
bricatedsteelframe,allpartsbeingwelded
odyis equippedwithahingedsteeltail gate.
quippedwithremovablewoodside racks,along
oodroofslats.A tarpaulinwithropesandstraps
pperpartofthebody(figs.1, 2and3).
ileris acombinationofwoodandsteel
perismadeupof wood,boltedtogetherwith
isintegralwiththesteel subframe.Therear
thahingedwood-and-steelfabricatedtailgate.
quippedwithremovablewoodside racks,along
oodroofslats.A tarpaulinwithropesand
estheupperpartofthebody (figs.4,5and6).
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ANDWATERTRAILERS
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LATEDDATA
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ANDWATERTRAILERS
ET
ED)
CKET(REAR)
VER
oTrailerTailGateandRear
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LATEDDATA
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NDWATERTRAILERS
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LATEDDATA
ED)
CKET
CKET
goTrailerTailGateandRear
ilerhasan ellipticalsteeltankwitha
weldedtothefabricatedsteelframe.Ahand-
datthefront endofthetank,to whichisattached
hoseand abellstrainer.Afaucetbox is
e traileratthefront(figs. 7and8).
CargoTrailers).
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ANDWATERTRAILERS
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LATEDDATA
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ANDWATERTRAILERS
depanels)18in.
)43%in.
ateddisk20x7 in.
steelbodytrailer)1300Ib
steelbodytrailer)3300Ib
in41Ib
axlebolts15in.
wposition26in.
3%ain.I.D.;6Vzin.O.D.;!1Mein.thick.
WaterTankTrailer).
(smalldiameter)28 Vain.
al
ateddisk,20x7in.
500Ib
3500Ib
in44Ib
axlebolts15in.
wposition26in.
3%2in.I.D.;6V4in.O.D.;IHiein.thick
urfacedroadsmaximum)
ryterrainmaximum)
50
(cargotrailer)40
erbodyfloor)28 in.
0in.
etteeye
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ON
ntrols5
NONCONTROLS.
ingbrakeleverislocatedon theright
rearofthe body.Thebrakeshouldbeapplied
onnectedfromthetowingvehiclewhetherona
e brakeshouldneverbeusedfor anypurpose
stbe releasedbeforethetrailerismoved.
ghtsare lightedbyinsettingcable
ler,into receptacleonthetowingvehicle
ailerisequippedwithbothserviceand
plights.Thelights canbechangedinstantly
ndfromblackouttoservice,byturningthe
oftrailer neartherearofthe body.
kingwheelislocatedon thedrawbar
ofthe lunette.Itcanberaisedfor towing,or
lingoutthe plungerandswingingthewheel
ngVehicle.
to pintlehitchonrearof thetowing
sonthetrailerto thetowingvehicle.
ginto receptacleonthetowingvehicle,
e lights.
lof thetrailer,makingsurethatforkis
p.
bymovinglevertowardfrontof the
cebreakagemayresultif brakesarelocked
owingvehicle.
r.
careshouldbetaken toallowforthefact
sturninsidetheturningradius ofthetowing
ngvehicleshouldbe steeredintheoppo-
desiredthatthetrailerbe turned.
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ANDWATERTRAILERS
TowingVehicle.
trailerbymovinglevertowardrear of
sideofdrawbarbracketandlowerthe
ungerandmakesureplungerisengagedin
cableplugfromthereceptacleontow-
nsofthe trailerfromthetowingvehicle.
unettefromthepintle ofthetowing
eaway.
odracks,beingsureto placeendsten-
er.
rtieloopson eachsideofbodyandtwo
ecurelyin place.
ofloadis2,000 pounds.Whenthetrailer
ento distributeloadequallyoverentirefloor
ghtat therearmayresultin tippingthe
omuchweightatthefrontwill makeitdiffi-
etowingvehicle.
cityofthewatertank is250gallonsof
0pounds.Whenthetrailerisloaded,caremust
levelunlessitis coupledtoatowingvehicle.
eris raisedtoohigh,therear endwillhang
ilertippingoverbackward.
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SUALCONDITIONS
onditions8
USUALCONDITIONS.
pecialpreparationsarenecessaryfor
heatandcoldforcargotrailers,other thanthe
orproperlubricationunderthese conditions,
ertrailersarenotdesignedtobe usedin
causenoprovisionforkeepingdrinkingwater
de.
n extremelysandyordustyconditions
pection,cleaningandlubricationofthetrailer
ewatertrailer,themanholecovershould
wntightly withthewingnut,exceptwhentank
cover.Thecoveronthebellstrainerat the
ld bekeptclosed,exceptwhenfillingthetank
aterfaucetboxcoversshouldbe keptclosed
eptwhendrawingwaterfromthefaucets.
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ANDWATERTRAILERS
NTIVEMAINTENANCESERVICES
0
1
yservice13
fficiency,itisnecessarythatthevehicle
edatintervalseachdayitis operated,also
aybediscoveredandcorrectedbeforetheyre-
failure.Certainscheduledmaintenanceservices
designatedintervals.Theservicesset forthin
ormedbydriveror crew,beforeoperation,dur-
fter operationandweekly.
enanceservicesarelistedonthebackof
eventiveMaintenanceServiceRecord,"WD
clesofall typesandmodels.Itemspeculiarto
stedonWDFormNo. 48,arecoveredinman-
emswithwhichtheyare related.Certainitems
notpertainto thevehicleinvolvedareelimi-
saswrittenintothe manual.Everyorganiza-
oleachdriverinperformingthe maintenance
nuals,whetherornot theyarelistedspecifically
FormNo.48thatapplyto thisvehicleare
oprovidespecificproceduresforaccomplish-
dservices.Theseservicesarearrangedto facili-
rvethetimeofthe driver,andarenotneces-
alorderas shownonWDFormNo.48.The
reidenticalwiththoseshownonthatform.
ofeachitemappliesalso toanysupporting
ndgenerallyincludesachecktoseewhetherthe
correctlyassembled,secure,orexcessivelyworn.
condition"isusuallyan externalvisual
whethertheunitisdamagedbeyondsafeor
m"goodcondition"isexplainedfurtherbythe
rtwisted,notchafedor burned,notbrokenor
d,notdentedorcollapsed,nottorn orcut.
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NTIVEMAINTENANCESERVICES
toseethatit is"correctlyassembled"is
nspection,toseewhetherit isinits normal
vehicle.
todetermineifitis "secure"isusuallyan
on,ahand-feel,orapry-barcheckforlooseness.
ncludeanybrackets,lockwashers,locknuts,
susedin assembly.
beunderstoodtomeanworncloseto,or
s,andislikelytoresulti nafailureif notre-
eduledinspection.
ctoryoperatingcharacteristicsbeyondthe
rrectmustbe reportedattheearliestopportu-
vidualin authority.
ERVICE.
eisdesignedprimarilyasa checktosee
en tamperedwithorsabotagedsincetheafter-
formed.Variouscombatconditionsmayhave
feforoperation,anditis thedutyofthe driver
otthe vehicleisinconditiontocarryout any
assigned.Thisoperationwillnotbeentirely
acticalsituations.
erationserviceconsistsofinspectingitems
heproceduredescribed,andcorrectingorre-
Uponcompletionoftheservice,resultsshould
edesignatedindividualin authority.
DDAMAGE.Lookforanyinjuryto trailer
equipmentingeneralwhichmayhaveresulted
ge,collision,fallingdebris,orshellfire sincelast
EFLECTORS.Iftacticalsituationpermits,
eethatalllampslight. Seethatlampsandwarn-
ndthatlenses arecleanandnotbroken.
Inspecttosee thattheyarein good
cure.
tires visuallyforcutsandbreaks.Re-
eads,embeddedglass,nails,orotherobjects
esttirepressure,andif under55pounds,in-
pectfordamageandlooseness.
NECTIONS.Observedrawbarassembly
sembledandfastenedtoframe.Inspectlunette
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ANDWATERTRAILERS
conditionfor attachingtopintle.Besure
elyandthatsafetychainsarecompleteand
towingvehicle.Pushplug oftrailerwiring
wingvehicle.
ANDTARPS.Examinebody,racks,and
ectloadforshifting andproperstowing.In-
damage.Inspecttailgate toseethathingeis
dthatfasteningchainsare presentandingood
quippedwitha 250-gallontankbody,inspect
oseparationoftankfrom frameatweldedjoint,
ckssecurely.
or250-gallonTankTrailer.Thefollow-
rformedin additionto,andafter,thoselisted
AL.Inspecttank,valves,andfittingsfor
dvalvestem,tightenpackingnutuntil leak
o tightennuttootightso astoscorevalvestem.
nspectloadingpumpandtestit tosee
on.Ifseepageisnotedaroundpackinggland
tightenpackingnut,using carenottogetit
bescored.Inspecttheintakehoseforcuts or
intakeendtosee ifitis present,ingoodcon-
RATIONCHECK.Theduring-operation
ediatelyafterthevehicleisput inmotion,in
ERVICE.
on,listenforanysoundssuchas rattles,
hatmayindicatetrouble.Anytimethebrakes
,considerthisa test,andnoticeanyunsatis-
mance.
erationservicesconsistofobservingitems
heproceduresfollowingeachitem,andinvesti-
erioustrouble.Noticeminordeficienciestobe
rliestopportunity,usuallynextscheduledhalt.
nalertfor anyabnormalperformance
fiattire,draggingbrakes,unhitchingofpintle
oftowbar frombodyoftrailer,shiftingofload,
tarpaulinorcurtains,orweavingoftowed
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NTIVEMAINTENANCESERVICES
regardedasminimummaintenancepro-
formedunderalltacticalconditions,even
aintenanceservicesmustbeslightedoromitted
vicesconsistofinvestigatinganyde-
eration,inspectingitemslistedbelowaccord-
wingtheitems,and correctinganydeficiencies
rrectedshouldbereportedpromptlytothe
thority.
ES,HUBS,ANDBRAKEDRUMS.Feelthese
emperatures.Ahotbrakedrumindicatesa
hub indicatesadamaged,improperlyadjusted,
dwheelbearing.Acolddrummayindicatean
DSUSPENSIONS.Observespringsforbroken
conditionindicatesbrokenspringbolt orre-
tsandshackleboltsfortightnessand damage.
Inspectwheelsandrims toseethat
dnutsattachingwheelsto hubstoseethatall
etiresfor damageandunder-inflation,
mbeddedobjectsfromtreadsandcarcass.
pectfendersfordamageandlooseness.
NECTIONS.Inspectdrawbarassemblyto
enedtotheframe.Inspectlunetteeyeto see
forattachingtothe pintle.Besureparking
wingpositionandis keptinthispositionby
Inspectsafetychainstoseethat theyare
othtrailerandtowingvehicle.Pushplug of
socketoftowingvehicle.
ANDTARP.Inspectbodyfordamage,load
wing,tarpfor damageandcorrectfastening.
th a250-gallontank,inspecttankingeneral
fmountings.Payparticularattentionforsepa-
ntankand frame,andseethatmanholecover
ely.
or250-gallonTankTrailer.Thefollow-
rformedin additionto,andafterthoselisted
RAL.Inspectthetank,valves,andfittings
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ANDWATERTRAILERS
DWEEKLYSERVICE.
ngisparticularlyimportant,becauseatthis
ehicletodetectanydeficienciesthatmayhave
oseheispermittedtohandle.He shouldreport
edindividualinauthority,theresults ofhisin-
performedthoroughly,thevehicleshouldbe
oment'snotice.Thebefore-operationservice,
ennecessaryonlyto ascertainwhetherthe
ditioninwhichitwasleftupon completionofthe
heafter-operationserviceshouldneverbeen-
emetacticalsituations,butmaybe reducedto
vicesoutlinedfortheat-haltservice,ifnecessary.
ormingtheafter-operationservicethe
dconsideranyirregularitiesnoticedduringthe
n,during-operation,andat-haltservices.The
onsistsofinspectingandservicingthefollowing
fter-operationservicethataremarkedby an
nalweeklyservices,theproceduresforwhich
feachapplicableitem.
EFLECTORS.Testalllights,iftactical
nsesandwarningreflectors,andexaminefor
ountings.
LWIRING.Inspectwiringforbreaks,broken
senessoffasteningon theframe,andgood
ockandswitch.Inspectswitchtoseethatit is
ngsatisfactorily,andsecure.
rbreaks.Removestones,glass,nails,or
ntreadsorcarcass.Testtire pressures,andif
this pressure.Iftireis warm,pressuremay
reiscool,recheckpressurebeforereleasing
agedorexcessivelyworntires.
DSUSPENSIONS.
enor shiftedleaves;thelattercondition
gspringbolts.InspectU-boltsfor tightness;
ghtness,bothatsprings andframe.
osenutsandbolts.
pectfendersfordamageandlooseness
enattachingnutsandbolts, iffoundtobe
NNECTIONS.
blyandseethatit isproperlyfastenedto
on.Inspectlunetteeyetosee thatitisi ngood
pintle.Besureparkingwheellocksin parking
tion,andis heldsecurelyinlatterpositionby
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NTIVEMAINTENANCESERVICES
tsafetychainstoseethattheyarecomplete
ailer wiringsecurelyintosocketontowing
mblyandmountingbolts,andlubricate
ANDTARPS.Examinebody,racks,and
ecttarpfor propernumberofhold-downropes
ears,orotherdamage.Inspecttailgateto see
rkingorderandfasteningchainsarepresent
iler isloaded,seethatload isproperlystowed.
250-gallontank,inspectweldjointbetween
etherthereisany indicationofseparation.
oseethatitis inalinementwithopening,that
on,andthatcoverlockssecurely.
EEL,RIM,ANDSPRINGU-BOLTNUTS.
nd springU-boltnuts,replacinganynuts
swhereinspectionorexperienceindi-
lybasis.
ASNEEDED.
ereinspectionofthe vehicleindicates
vehicleasindicatedonthelubrication
dinspectionindicatestheneedona weekly
ICLE.
emoveexcessdirtand greasefromexte-
andremovealldirtand grease.Ifwash-
leanas possible.
or250-gallonTankTrailer.Thefol-
eperformedinadditionto, andafter,those
RAL.Inspecttank,valves,andfittings
tentiontoweldedjointsof tank,pipeconnec-
eakaroundvalvestem,tightenpackingnut
care nottotightennutexcessivelysoas to
valveswhichleakbecauseofimproperseating.
ndtest ittoseethat itisin workingcon-
round packingglandonpistonrodwhentest-
singcarenotto getittootight, asrodmaybe
eforcutsandbreaks;inspectstraineron intake
goodcondition,andclean.
leanintakestrainer.
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ANDWATERTRAILERS
alpartof preventivemaintenance,deter-
heserviceabilityofpartsandassemblies.
ldbe lubricatedasindicatedonthe
Severeoperatingconditionsmaynecessitate
eciallyincaseswherevehiclecomponentshave
chemicals,snowormud.
maynotbepossible tosupplyacom-
antscalledforbythe LubricationGuideto
ns.Itwillbenecessarytomakethebest useof
,subjecttoinspectionbytheofficerconcerned,
nsibleordnancepersonnel.
ollowingnotesapplytotheLubrication
bricationandservicebelow-10F, refer
eapplyinglubricant.Lubricateuntilnew
earings.CAUTION:Iftraileris tobewashed,
movewheel,cleanandrepackbearings.
catetrailerhinges,brakelever,links,
wheelspringlatch.
LUBRICATION.Springs.
alsindicatedarefornormalservice.For
ed,heat,water,mud,snow,roughroads,dust,
ently.
ninstructionsarecloselyfollowed,proper
actoryresultsnotobtained,areportwill be
cerresponsibleforthemaintenanceofmateriel.
erecordoflubricationservicingwillbe
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fe
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ANDWATERTRAILERS
NTENANCEINSTRUCTIONS
N
e17
ceandrepairbythe crewandotherunits
minedbytheavailabilityofsuitabletools,avail-
capabilitiesofthemechanics,timeavailable
Alloftheseare variableandnoexactsystem
ribed.
TENANCE.
maintenancedutiesforwhichtoolsand
ortheusing armandordnancemaintenance
ndrepairswhichare theresponsibilityof
ersonnelmaybeperformedbyusing armperson-
ermit,withinthediscretionofthecommander
wordsasusedinthislist ofmaintenanceallo-
ws:
ganizationregiments,battalions,
andseparate
celightmaintenancecompanies,
ompanies,ord-
ancebattalions,
nceheavymaintenancecompanies
ops.
cebaseregiments,ordnance
ufacturers'
onsistsofservicing,cleaning,lubricat-
g,tighteningboltsandnuts,andmak-
ngexternaladjustmentsofsubassem-
sor assembliesandcontrols.
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N
sistsofremovingthepart,subassem-
.bly orassemblyfromthevehicles,and
reconditioned
yorassembly,
e.
stsofmakingrepairsto,or replace-
entofthe part,subassemblyorassem-
tcanbe accomplishedwithout
gthesubassem-
snot require
machining,
ancing.
sistsofcompletelyreconditioning
dreplacingin serviceablecondition
nserviceablepart,subassemblyor
cludingweld-
tting,alining,
dtesting.
elBodyCargoTrailer.
X
X
nd/orreplaceX
X
X
replaceX
replaceX
eand/orreplaceX
reline)X
viceand/orreplace....X
airX
replaceand/orrepairX
replaceX
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ANDWATERTRAILERS
d)
laceX
airX
ceX
ceX
rX
dX
aceX
airX
ceX
X
X
X
X
bliesreplaceX
blies-repairX
tictireunit)service
heelunit)replace....X
aceX
irX
pneumatictireunit)
replaceX
repairX
rebuildEX
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N
ceX
eX
(withserviceableunit
odBodyCargoTrailer.
X
EX
nd/orreplaceX
X
X
replaceX
replaceX
d/orreplaceX
ne)X
nd/orrepairX
replaceX
X
EX
laceX
airX
ceX
nsionreplaceX
nsionrepairX
nsionrebuildX
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ANDWATERTRAILERS
)
ceX
rX
ceX
X
X
X
X
bliesreplaceX
bliesrepairX
X
aceX
irX
replaceX
repairX
rebuildEX
ceX
eX
(withserviceableunit
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N
erTankTrailer.
X
X
nd/orreplaceX
X
X
replaceX
replaceX
rviceand/orreplace....X
airX
and/orreplaceX
(reline)X
laceX
airX
ceX
X
X
X
X
cetreplaceX
cetrepairX
eplaceX
replaceand/orrepairX
yreplaceX
yrepairX
eplaceX
epairX
ebuildX
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ANDWATERTRAILERS
ceX
nsionreplaceX
nsionrepairX
nsion-rebuildEX
bliesreplaceX
bliesrepairX
tictireunit)service
heelunit)replaceX
aceX
irX
pneumatictireunit)
replaceX
repairX
rebuildEX
ceX
eX
(withserviceableunit
edwillnormallybeperformedintheechelon
eechelonsasindicatedby"E"may
spectiveechelonsinemergenciesonly.
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NTIVEMAINTENANCESERVICES
vemaintenanceservices18
EVENTIVEMAINTENANCE
ntenanceinspectionsandservicesarea
functionoftheusing arm,andaretherespon-
operatingorganizations.
uenciesofthepreventivemaintenance
econsideredaminimumrequirementfornor-
Underunusualoperatingconditions,suchas
ddustyorsandyterrain,itmaybe necessary
nanceservicesmorefrequently.
CIPATION.Thedriversshouldaccompany
emechanicswhileperiodicsecondechelonpre-
vicesareperformed.Ordinarilythedrivershould
heduledpreventivemaintenanceserviceina
n;thatis,itshouldbedry andnotcakedwith
extentthatinspectionandservicingwillbe
ever,thevehicleshouldnotbewashedorwiped
ertaintypesofdefects,suchascracks,leaks,and
ssembliesaremoreevidentifthesurfacesare
n thosecontainedinthegeneralproce-
cificproceduresinstep(5) whichfollow,are
rformanceofapreventivemaintenanceservice,
ency,othersectionsofthe vehicleOperator's
eminvolved,ora designatedindividualin
lted.
S.Thesegeneralproceduresarebasicin-
ollowedwhenperformingtheserviceson the
cprocedures.NOTE:Thesecondechelonper-
ytrainedinthese proceduressothattheywill
.
edsubassembliesareinstalledto correct
betakentoseethattheyare clean,correctlyin-
atedandadjusted.
ricantretainerseals,a coatingofthelubri-
thesealing surfaceofthelipof theseal.When
eal,itshould besoakedinSAENo.10 engine
oratleast 30minutes.Then,theleatherlip
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ANDWATERTRAILERS
ybyhand,beforeinstallingtheseal.The lip
arred.
ofeachitemappliesalso toanysupport-
,andusuallyincludesachecktosee whether
on,correctlyassembled,secure,orexcessively
stbethoroughlytrainedinthefollowingex-
condition"isusuallyan externalvisual
hethertheunitisdamagedbeyondsafeor
mgoodconditionisexplainedfurtherbythe
ortwisted,notchafedor burned,notbroken
yed,notdentedor collapsed,nottornorcut
toseethatit is"correctlyassembled"is
nspectiontoseewhetherit isinits normal
vehicle.
todetermineifitis "secure"isusuallyan
on,ahand-feel,orapry-barcheckforlooseness.
ncludeanybrackets,lockwashers,locknuts,
susedin assembly.
beunderstoodtomeanworncloseto,or
s,andislikelytoresulti nafailureif notreplaced
inspection.
eareindicatedbyrepeatingtheitem
hichshowtheintervalat whichtheservices
howthat thepartsorassembliesareto receive
es.Forexample,anitemnumberinoneorboth
en"procedure,meansthattheactualtightening
ormed.Thespecialservicesinclude:
aryadjustmentsinaccordancewiththe
hicleOperator'sManual,specialbulletins,or
vehiclewithdry-cleaningsolventtore-
rt,andotherforeignmaterial.Aftertheparts
cleanfluid anddrythemthoroughly.Take
n untilreassembled,andbecertaintokeep
ubberorothermaterialwhichit willdamage.
secoatingfromnewparts,sincethismaterial
applieseithertolubricationoperations
vehicleLubricationGuide,ortoitemsthat donot
shouldbe performedinconnectionwiththe
ifpartshavetobedisassembledforinspection
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NTIVEMAINTENANCESERVICES
stsofperformingspecialoperations,such
ter,drainingandrefillingunits withoil,and
dge.
perationsshouldbeperformedwithsuffi-
eonthewrenchhandle)totightenthe unit
nicalpractice.Usetorque-indicatingwrench
ertighten,asthismaystrip threadsorcause
alwaysbeunderstoodtoincludethecorrect
s,locknutsandcotterpinsprovidedto secure
itdifficulttoperformthe completepre-
ceduresatonetime,they cansometimesbehan-
ocompletealloperationswithinthe week,if
eathaltsand inbivouacareasmustbeutilized,
tmaintenanceoperationsarecompleted.When
tion,itemswithSpecialServicesin thecol-
consideration.
eventivemaintenanceproceduresthatfol-
eoutlinedon WDAGOFormNo.461,whichis
ceServiceWorkSheetforWheeledandHalf-
msontheworksheetthatdo notapplytothis
the proceduresinthismanual.Ingeneral,
fitemsontheworksheet isfollowedinthe
someinstancesthereisdeviationfor conserva-
eandeffort.
ES.Theproceduresforperformingeach
thly)and6000-mile(six-month)mainte-
cribedinthefollowingchart.Eachpageofthe
s leftedgecorrespondingtothe6000mile and
erespectively.Veryoftenitwillbefoundthat
esnotapplytoboth scheduledmaintenances.
hproceduretofollow,lookdownthe column
tenancedue,andwhereveranitemnumber
ationsindicatedoppositethenumber.
CECHART
ollows:
Examinetoseethatallstems
correctpositionandthatall
installedsecurely.Donot
esforcuts,bruises,breaks,
eddedglass,nailsandstones.
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ANDWATERTRAILERS
dwear,watchingforanysign
heredgesandone-sidedwear.
cescausingsuchconditionsshould
tedorreported.Thewheelposi-
rwearshouldbechangedto
resandnon-directionaltires
samevehicle.Directionaltires
dinarilybemountedsothat
pwhenviewedfromfront.
rimsandtheirlockrings
onditionandsecure.
elstudnutssecurely.
ndexaminetoseethatlinings
lysecuredtobrake shoes,in
hdrums,freeoflubricant,and
oinspecttoseethatbrakeshoes
erlysecuredandguidedby
nectinglinks,guides,andsprings
nsttheircamsor stopsbyre-
sofliningaboverivetheadsat
esufficientforat least1,000
nings arebadlycontaminated
ningsonboth brakes.Iflinings
atedwithlubricant,cleanthem
romthelinings withawire
ressedair.
Thoroughlycleanalldirt and
eepingsolventawayfrombrake
dsupportstoseethat theyare
ymounted,andnotexcessively
akesupportboltsand drum-
NOTE:On6,000milemainte-
emNo.52should beperformed
einstalled.
entrelateditemsarecom-
noradjustmentmethodsothat
ncefrombrakedrums.Ifnew
,adjustshoesby majoradjust-
dinparagraph55.
ndNuts).Inspecttoseethat
on.Revolvethemandobserve
siverun-out.Withoutremoving
encesofloosenessinwheelbear-
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NTIVEMAINTENANCESERVICES
wheelsandlistenforindications
earings.Examinearoundbrake
ricantleaks.
ingandoilseals.Cleanthor-
balls,racesandcagestosee that
and thatcupsaresecure.If
,newcupsshouldbeinstalled.
rfacesuponwhichbearingsare
dition.Afterlubricatingwheel
anddrumassembliesintoplace;
s aslightdrag,andbackoff
ndPawl).Inspecttosee
odcondition,adequatelylubri-
ed,andsecurelymounted.Apply
observewhethertheyoperate
ufficientamountoftotal lever
herpawlmeshesproperlywith
inapplied position,andthat
smarenotexcessivelyworn.
olts,Hangersand
hattheseitemsare ingood
mbledandsecure.Springclips
ce;springleavesshouldnotbe
position.This maybeanindica-
t. Examinetoseethatdeflection
ndapproximatelythesame.
orexcessivewearbymeansof
gU-boltssecurelyanduni-
heritis sprungorbent,andthat
re.
oseethatmountingsareall
re.
mbers).Inspectframe,
ssmemberstosee thattheyare
ndcorrectlyalined.
mmets.Inspecttheseitems
seethattheyare ingoodcondi-
onnectedandsecure.
kout).Inspecttoseethat
operatesproperlyandthat with
roperly;seewhetheranylamps
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ANDWATERTRAILERS
nspectalllamps toseethat
and secure;examinefordirty
treflectorsareallpresent,in
secure.
thatconnectionsareingood
re.
dersarein goodcondition
dChains,Floor,Skid
owsandTarpaulins).
ems areingoodconditionand
properlyalinedandfastened
dendcurtains,fastenersor
alhooksorloopson thebody
nditionandsecure,andthattail
eadequatelylubricated.
250-gallonTankTrailer).
ngspecialattentiontoall weld
entankandframeandseethat
ation.Inspectpumpandtest.
enup nearlyfullamount,re-
od.Inspectvalvesforleakage
rleakagedueto badseatingof
vestem,ifneeded;replace
fimproperseating.Inspect
t closesandlocksproperly.
jointsforleaks.
ctpaintofentirevehicleto
tion,payingparticularattention
hthatmightcauseglareor re-
arkingsandindentificationfor
ationplatesandtheirmount-
eelandLockPin).Inspect
eingoodcondition,correctly
equatelylubricated,andwhether
elyintowingandparkingposi-
etoallfittings andgears,andoil
vefittings.
nggearassemblyand
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NTIVEMAINTENANCESERVICES
unettetoseethatit isin
etodrawbar.
ntingsandassemblybolts
nspecttoseethattheyare
relyconnectedtotrailer
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ANDWATERTRAILERS
(cargoandwatertrailer)19
el20
eelbearing22
SEMBLY(CARGOANDWATER
goTrailer.
emedy
bolts.Tightenboltsin springshackles
OFTOP.
rviceorreplace.
t. Replace.
e.
nerReplace.
etainers.Replace.
Replace.
Replace.
nges.Repairor replace.
g. Repairorreplace.
eg Repairorreplace.
pins.Repairorreplace.
erTrailer.
bolts.Tightenboltsin springshackles
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FTANKMANHOLECOVER.
emedy
ce.
pairorreplace.
eplace.
ILLTANK.
umpbyremovingpriming
th
open.Openstrainerbyunscrewingwing
nstrainer.
Cleanhoseandpiping.
y.Servicetightenstuffingboxgland
mp.
ogged.Serviceorreplace.
AUCETS.
dflush.
e.
at.Replacefaucet.
CETBOXES(A,fig.7).
htenbolts.
ges.Repairorreplace.
ace.
INGWHEEL,
D.
ce.
gbolts,spring
ts.
ATESHARD.
replacequadrant(par.
Seefig.9.)
acespringandlatchrod.
placerod.
wheel.
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ANDWATERTRAILERS
ent.
hicle
s.
inter-
f
tions.
n;repair
icle.
epair.
par.
eshort
SANDWHEELBEARINGS.
ent.
ed.
be.
a,c
55
62).
replace
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LD.
norhave
norhave
atit
tral
y
ween
ts.
r.55a)
ars.56
ke
and 59).
ssembly
esand
57).
nd57).
nd57).
7g).
nd64).
and
e(pars.
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ANDWATERTRAILERS
emedy
place(par.27,a(15)).
Replaceshacklecomplete.
dadjustwheelbearings
stment.Adjustwheelbearings(par52, a).
htenallbolts.
ars.61and62).
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BLY
eassemblycomponents26
meassemblycomponents27
(fig.10).The bodyismadeofsheet
rmthebox,and isintegralwiththe steelframe
ails, andcrossbolsters.Thebodyfrontand
andaremadeof No.14-gagesteel.Therearof
ngedtailgatemadeofNo.14-gagesteel and
straphinges.Thesidepanels areeachequipped
hareplacedtheremovablesiderackassembly
havetarpaulinloops weldedtopanelstowhich
.
r(fig.11).The bodyismadeofs/s-inch
tedtogethertoformabox.The bottomofthe
ardwood,andisbuilt integralwithsteelframe-
mbers,frontandrearsill, twosteelcrossmem-
ross members.Thefrontandsidepanelsare
othe frameworkandbottom.Therearofthe
ngedtailgateofhardwoodreinforcedwithmetal,
hreeheavyhinges.The sideshavemetal
owhichareplacedthe removablesiderack
sandendshavetarpaulinrope hooksboltedto
paulinr opesaretied.
.1,2,4and 5).Theset ofracksconsistof
t-hand,andtwoendracks,all ofwhicharere-
ppedwitha canopytop,consistingoffour
h,inadditiontothe racks,formanenclosure
nstalled.The racksaremadeofhardwood
thcarriagebolts.The siderackpostsarein-
donbodysidepanels.The endracksareheldin
hsecurethemtoside racks.Theroofslatsare
edatthe topofsideracks.Thetarpaulinis sten-
andhasfourtie ropestoeachsideandfour on
nd rearendflapshaveleatherstraps for
and12).The250-gallonellipticalwelded
ell and12-gageheadsandbaffleplates,witha
eartherear.Thetankis equippedwitha16-inch
withahinged cover.Twosaddlesintegralwith
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NDWATERTRAILERS
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BLY
^^ ',(K.
11
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ANDWATERTRAILERS
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BLY
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ANDWATERTRAILERS
e,consistingofsideandendrails.Frameand tank
ouswelds.Twofenderbracketsarewelded
reflectorbracketateachrearcorneroftheframe.
UIPMENT(fig.7).Ahandpumpis as-
d oftank.Supplyofwaterenterstankby
entrybeingbelowmanholecover.Waterenter-
metal andclothstrainer.Whennotin usepump
rticalposition.A25-footsuctionhoseequipped
mbledtothebottomofthe pump.Thehose,
coiledpositionon aracksupportedbytheframe
edwithtwoleatherstraps.Waterisdrawnfrom
thefrontbymeansofpiping leadingtofaucetsin
meatthefrontof trailer.Eachfaucetboxis
gedcoverwhichisheldin anopenpositionby
n.
NDFRAMEASSEMBLY
rgoTrailer.
ebodyonasetof horsesorsuitablesup-
ground.
FITTINGS.Unscrewfittingsfromspring
ONTROLCABLES.Brakecontrolcablesand
nectedfrombellcrankleverunderbodyby
spins.Removenuts,lockwashersandcap
tsupports.Removesupportsandbendcables
ytokeepcablefreefromground.
CRANKLEVER(fig.13).Removeupper
ellcranklever tobodystud.Removebell
studfromundersideofbody.
GERBOLTS.Removecotterpinsandslotted
driveboltsoutofhangers,using ablockofwood
bolt.
SPRINGASSEMBLY.Removebyloweringaxle
undandroll outfromunderbody.
WITCH.CARGOBODY(fig.10),TANKBODY
ts,lockwashersandbolts,andlet switchhang
electriccablesandfourtaillightwiresfrom
ABLEANDPLUGASSEMBLY(fig.14).Refer
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BLY
W
AssemblyPartiallyDisassembled
OLTS.Removetwonutsandlockwashers
of drawbarrailstolipat backoffrontspring
U-BoLTS.Removefournutsandlockwash-
ndrawbarrails tofrontbodycrossrail.Remove
ANDPARKINGWHEELASSEMBLY.Lower
elassemblytogroundandpull outfromunder
emoveupperandlowerfenderbolts,
dnuts.Removefenders.(NOTE:Onwater
onwithfender.)
DBLACKOUTTAILLIGHTANDSTOPLIGHT
nrightandpullwire connectingplugsoutof
twonutsandlockwashersfromtaillightstuds
outuntil studsarefreeofbracket.Remove
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ANDWATERTRAILERS
DBLACKOUTTAILLIGHTANDSTOPLIGHT
paragraph42a.
RATINGLEVER(fig.13).Pullcotterpin
andremoveclevispin fromclevis.Pullad-
ke.Backoffnuts,andremovelockwashers
screws.Pulloutcap screwsandremovehand
S.Removeroundheadscrewsandnuts
ectorsfromsideand rear.
MPERSPRINGASSEMBLIES.Removenut
securingvolutespringand supportplateto
movetheassembly.Repeatoperationonoppo-
DBLACKOUTTAILLIGHTANDSTOPLIGHT
ews,twohexagonal-headcapscrews,nutsand
bracket.Removebracket.
SSEMBLY.Pullcotterpinsoutoftail gate
ovewashersfromrod.Drivegatehingerod or
ebolts.Pullchainwithlatchpinsout oftailgate
te.
ebodyonasetof horsesorsuitablesup-
ground.
FITTINGS.Unscrewfittingsfromspring
TROLCABLES.Disconnectbrakecontrol
mbellcrankleverunder bodybyremoving
movenuts,lockwashersandcapscrewsfrom
emovesupportsandbendcablesbackover
ablefreefromground.
CRANKLEVER(fig.13).Removeupper
ellcranklever tobodystud.Removebell
studfromundersideofbody.
NGERBOLTS.Removecotterpinsandslotted
driveboltsoutofhangers,using ablockof
endofbolt.
RINGASSEMBLY.Removebyloweringaxle
undandroll outfromunderbody.
WITCH(fig.12).Removethreenuts,lock
switchhangon wires.Disconnecttwoelectric
esfromswitch.
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BLY
ABLEANDPLUGASSEMBLY(fig.14).Re-
chholdcableclampstodrawbarand bodyleft
dplugassemblyfromdrawbarandbody.
OLTS.Removetwonutsandlockwashers
of drawbarrailstolipat backoffrontspring
U-BOLTS.Removefournutsandlock
fastendrawbarrailsto frontbodycrossrail.
ANDPARKINGWHEELASSEMBLY.Lower
elassemblytogroundandpull outfromunder
NDFENDERAPRONS.Removeupperand
rsandnuts.Removefendersandfenderapron.
DBLACKOUTTAILLIGHTANDSTOPLIGHT
rightandpullwire connectingplugsoutof
twonutsandlockwashersfromtaillightstuds
outuntil studsarefreeofbracket.Remove
DBLACKOUTTAILLIGHTANDSTOPLIGHT
capscrews,nutsandlockwasherswhichsecure
railsandremoveclips.Pullouttaillight wire
RATINGLEVER(fig.13).Pullcotterpin
andremoveclevispin fromclevis.Pullad-
ke.Backoffnuts,andremovelockwashers
screws.Pulloutcap screwsandremovehand
S.Removeroundheadscrewsandnuts
ectorsfromsideand rear.
MPERSPRINGASSEMBLY.Removenutand
ringvolutespringandsupport platetounder
e assembly.
DBLACKOUTTAILLIGHTANDSTOPLIGHT
onal-headcapscrews,nutsandlockwashers
movebracket.
RWINGNUTANDEYEBOLT.Unscrewwing
movewasher;driveoutpinandremoveeyebolt
RANDHINGE.Pullcotterpin,remove
emovecoverandhinge.
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ANDWATERTRAILERS
NER.Unscrewroundheadboltofhose
trainercan bepulledfromintakehose.
rewroundheadboltofhoseclampenough
frombottomconnectionofpump.Unbuckle
kand removehose.
P.Removetwonuts,lockwashersand
werbracket.Removepumpbyunscrewing
eadingtotankopening.Hold pipetokeepit
K.Removefournuts,plainwashersand
me.
XES.Unscrewunionringonfemaleunion.
shers,plainwashersandstepboltsand lower
aterboxeswithpipingassemblytogroundand
DYANDFRAMEASSEMBLY
rgoTrailer.
SEMBLY.Mounttailgateontrailerbody
nsin gatelatchestoholdtail gateinposition.
lgatelatchesuntilhinge eyesandeyebolteyes
d.Installwashersonrod orhingepins.Insert
S.Placereflectorssothat holeslineup,and
ws,lockwashersandnutsforeachreflector.
BLACKOUTTAILLIGHTANDSTOPLIGHT
bracketwithsideofbodyso thatflangeex-
y;onwoodcargobodythebracketflangeextends
eadscrewthroughbodyand thenthroughtop
herandnut.Tightennut.Installhexagonal
ameandbottomofbracket.Applylockwashers
TE:Caremustbetaken toscrapethepaint
edtosidesofbodyto insureproper-groundfor
cefendersand/orfenderapronsintoposi-
lineup.Installroundheadboltby startingbolt
hingboltinto fenderupperhole.Installflat
ut.Tightennut.Installhexagonalheadbolt
enthroughfenderlowerhole.Install flat
ut.Tightennut.Installremainingbolts,
ashion.NOTE:Ifequippedwithfenderaprons,
artingthe boltthroughtheuppercenterhole
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BLY
chingtheboltintotheupper centerholeofthe
r,lockwasherandnut. Tightennut.Insert
eachside ofcenterhole,hookboltheadsin
oframe.Installwashers,lockwashersandnuts.
washer,lockwashersandnutsand tightenall
PERSPRINGASSEMBLIES.Positionvolute
nundersideof body.Securetobodywithbolt,
ennut.Repeatoperationforoppositeside.
SSEMBLY.Placedrawbarassemblyunder
OLTS.Lineupholein rearendofdrawbar
ngbracket,withdrawbaronthe outside,and
stalllockwashersand nuts.Tightennuts.
uredrawbarrailstobodyfrontrailwith
andnuts.Tightennuts.
BLEANDPLUGASSEMBLY.Refertopara-
ononsteelbodyand paragraph39b(1)for
DBLACKOUTTAILLIGHTANDSTOPLIGHT
paragraph41c.
SWITCH.Refertoparagraph37a(1) for
ndparagraph39b (2)forconnectingtowood
SWITCH.Refertoparagraph37a(2).
DBLACKOUTTAILLIGHTSANDSTOPLIGHTS.
installationonsteelbodyandparagraph43b
dy.
PRINGASSEMBLY.Placeaxleassembly
ewrap-aroundspringeyeto thefront,andbrake
TS.Insertfrontspringeyeinto frontspring
withlubricatorhole tooutsideoftrailer,and
oodblock)into placewithbuckingbaragainst
slottednut.Insert andspreadcotterpin.In-
rearspringhanger.Drivespringbolt withlubri-
er intoplace.Installandtightenslottednut.
n.Be suretheserrationsonthe springbolts
sinthefrontspring bracketsandrearshackles
s.
ONFITTINGS.Installlubricationfittingsin
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ANDWATERTRAILERS
AILERSONLY
NUT
N
VER
REW
EMBER
mentDiagram
LCRANKLEVERASSEMBLY.Placebell
studonunderside ofbody.Insertstudthrough
sherand uppernutonstud.Tightennut.
RATINGLEVER.Lineupbrakeoperating
andinstalltwocapscrews,lockwashersand
brakeleveradjusting yokewithbrakelever
cotter pininclevispinand spreadcotterpin.
LESTOBELLCRANK.Lineupbrakelever
viswithbellcrankand installclevispins.Insert
ndspreadcotterpins.Positionbrakecablecon-
.Placecablesupportbracketovercab'econduit
ocap screws,lockwashersandnuts.Tighten
owingprocedureinnextstep.
ESANDBRAKES(fig.15).Withbrake
hetnotch,adjusthandbrakeclevissothatcenter
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BLY
spaced5%inchesfrombolsterorframecross
eclevisadjustingnut.Removeadjustinghole
ckingplates.Insertscrewdriverinslotand
w.Tightenbothbrakeadjustingscrewsby
drivertowardcenteroftrailerwheeluntil drag
rotated.Removecableslackandinsertclevis
orouslyseveraltimes untilconduitsare
rpawltofirstratchetnotch.Removecable
esuntilall slackisremoved.Adjustcable
njustbe inserted.Insertandspreadcotterpins.
pnuts.Loosenbrakeadjustingscrewsuntil
Applybrake leveruntiltrailerwheelwith
edbyhand.Loosenbrakeadjustingscrewon
wheelsisequal.Returnbrakelevertorelease
gholecoverplates.
ES.Placewaterboxesonrightandleftside
withfour nuts,lockwashers,plainwashersand
gon femaleunion.
nstallhoserackatfrontof framewith
dbolts.
Screwentirepumpassemblytopipelead-
untilfitting istightandpump isinverticaland
pumptolowerbracketwithtwonuts,lock
cthosetobottomconnectionofpump.Se-
eningroundheadboltonhoseclamp.Secure
bucklestraps.
ER.Inserthoseendofbell strainerinhose,
oundheadboltonhose clamp.
ANDHINGE.Placecoverovertankopen-
s.Inserthingepin,placeon washerandinsert
WINGNUTANDEYEBOLT.Placeeyebolt
f tankopeningoppositehinge,insertpinand
tterpin.Spreadcotterpin.Screwwing nuton
MBLYCOMPONENTS.Proceedasoutlined
ugh(20).
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ANDWATERTRAILERS
WHEEL
0
adrantremovalanddisassembling....33
adrantassemblingandinstallation....34
arassemblyconsistsofthedrawbar
ye,tworailsandtwosafetychains.Therails are
reinforcedchannelsandareattachedto the
withfour7iox1 Vi-inchcapscrews.Thesafety
edrawbarbracketatthe extremefrontbya
xtendsthroughbothrailsandthe drawbar
tepassesthroughthedrawbarbracketcasting
her,castellatednutandcotterpin.Thedrawbar
middletotheunderside ofthefrontbodycross
ds ofthedrawbarrailsare boltedtoalip on
heparkingwheelis fastenedtothedrawbar
ofaquadrantandpivot bolt.Theparkingwheel
pportwheneverthetrailerisuncoupledfrom
gthe trailer(fig.16).
wheelswingsonapivot boltandiscon-
ndrod.Itis designedtoswingupwhenthe
ownwhilethetrailerisparked.The spring
wheelineitherthe upordownpositions.The
latch rodoutandmovingtheparkingwheel
on.
ctionX,par.26 a(8)through(11).
BLING.
Assembly.Removecotterpin,slotted
erbossofdrawbarcasting.
Removecotterpin,castellatednutand
wbar.
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WHEEL
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ANDWATERTRAILERS
G
ING
FITTING
AssemblyDisassembled
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WHEEL
ovecotterpinandslottednut(onlunette
ng.Pulllunetteforwardthroughthedrawbar
Removefournuts,lodewashersand
earofcasting.
G.
cedrawbarcastingbetweendrawbar
slineupwith holeinextremefrontofcasting.
onechainbevelplate,andpushbolt through
drawbarandrails.Slideotherchainbevel
installandtightencastellatednut.Install and
curethetwodrawbarrails totherear
yinstallingfour bolts,lockwashersandnuts.
etteshankfrontendof drawbarbracket
tlunetteeye ringishorizontal.Installwasher
atrearofcasting.TightennutI nstalland
sembly.Positionparkingwheelassem-
sothatthe holesintheparkingwheelquadrant
nger inlowerbossofdrawbarbracketcasting.
roughhole inlowerbossofdrawbarcasting
adrant.Installandtightenslotted nut.Install
ON.
ctionX,par.27 a(6)through(9).
KANDQUADRANTREMOVAL
Assembly(par.30a).
ForkfromQuadrantandWheel.
ndscrewout setscrewfromforkswivelhous-
velpin andthrustwasherfromforkswivel
nfromslottednut andaxle.Removeslotted
ftfrom forkandwheelhub,takingcarenotto
ewheelfromfork.Removelubricationfittings
wivelhousing.
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ANDWATERTRAILERS
KANDQUADRANTASSEMBLING
cedisk wheelinforkandlineup wheel
kprong.Installaxleshaftin forkprongeyesand
enslottednut. Installandspreadcotterpin
ationfitting inwheelhub.
.Slipthrust washeronquadrantswivel
pinin forkswivelhousing.Installsetscrew
screwsetscrewintoforkswivelhousing.Tighten
bricationfitting inforkswivelhousing.
sembly(par.31d).
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em35
36
on37
moval38
allation39
ghtandstoplightwire removal40
ghtandstoplightwire installation....41
ghtandstoplightremoval42
ghtandstoplightinstallation43
TINGSYSTEM(figs.18and19).
diagramshowsthecompletewiringfor
ationoflights andswitches.Thetraileris
ationtaillightsmountedoneoneachsidenear
pperunitofthe left-handlightisacombination
andthe lowerunitisa blackouttaillamp.The
ndlightisablackoutstoplamp,and thelower
p.Eachlighthastwosealedlamp unitswhich
ngthescrewsonthe lightdoor.
helightsis suppliedbythetowingvehicle,
hecableandplugassemblylocatedat thefront
ndof thecable,exceptforwoodbodycargo
ackoutswitchmountedonthe leftsideofthe
dertochangefromservicetoblackoutlights,
nswitchandturn.
TRAILER.Onthewoodbodycargotrailer,the
erminatesatajunctionblockon thefrontsill
nblock,atwo-wirecablecontinuestothe
arsideof trailer.
EMOVAL.
emovenuts,lockwashersandbolts
eofbody,andlet switchhangonwires.
nectelectriccableandfourtaillightwires
witch.
STALLATION.
aterTankTrailers.
WITCHWIRES.Connectelectriccableand
has follows:Connectbrowncablewireto
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ANDWATERTRAILERS
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ANDWATERTRAILERS
TL)andwhitecablewire toswitchstoplight
cabletogroundonrail. Connecttwoblack
er)wiresto switchblackoutterminal(BT).
thoutblacktracers)wiretoswitchblackout
nectred(withblacktracer)orgreenwire
inal(SS)and red(withorwithoutwhite
ilterminal(ST).
WITCH.Positionswitchonleftside ofbody
nstallbolts,lockwashersandnuts. Tightennuts.
r.
WITCHWIRES.Connectwiringharness
Brownwirewithtwo blacktracerstoterminal
acktracerstoterminal(SL). Connecttail
esas follows:Brownwirewithtwoblacktracers
ewithtwoblacktracersto terminal(BS).
cablewiresasfollows:Brownwirewithtwo
ST),whitewirewithtwo blacktracersto
WITCH.Refertoparagraph37a (2).
DPLUGREMOVAL.
d watertanktrailerremoveblackout
esfromterminals(TL)and(SL),alsored
iler,disconnectcablesatjunctionblock
Clips.Removecapscrews,nutsandlock
bleclipstodrawbarandbodyleftside rail.Re-
Assembly.Pulloutelectriccable
DPLUGINSTALLATION.
nkTrailers.
BLEANDPLUG.Secureelectriccableto
wbarwithcableclips,bolts,capscrews,lock
terminalendsthroughholein leftsideofbody
oswitch(par.37a (1)).
BLEANDPLUGASSEMBLYANDWIRING
cableandplugassemblyondrawbarbracket
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hcableclamps.Connectcablestojunctionblock
ownwiretojunctionblockterminal(TL);white
inal(SL)andred wiretotrailerground.From
arnesstoblackoutswitch.Atjunctionblock
wirewithtwoblacktracerstojunctionblock
ithtwoblacktracersto junctionblockter-
OUTTAILLIGHTANDSTOPLIGHT
ctingPlugs.TwistVsturnrightand pull
ugsoutoftaillight sockets.
movecapscrews,nutsandlockwashers
bodyrails.Removeclips.
ch(par.36).
BlackoutTaillightandStopLight
twiresfromswitchandpulltaillightwire
woodcargobody,removetrailerwireharness.
OUTTAILLIGHTANDSTOPLIGHT
oSwitch(par.37a(l),b(l)).
Refertoparagraph37b (2).
koutTaillightonStopLightWire
aph43aandparagraph43 b.
ngPlugs.Inserttaillightwire con-
sockets,pushandtwist V&turnleft
OUTTAILLIGHTANDSTOPLIGHT
ackoutTaillightandStopLightAs-
andpull taillightwireconnectingplugsout
wonutsandlockwasherswhichsecureeach
htbracketsand liftoffthetaillightassembly.
OUTTAILLIGHTANDSTOPLIGHT
aterTank.Scrapepaintoff contacting
ckettoensureproper ground.Linetaillight
ts,lockwashersandnuts.Attachblackwire
er)tobottomof RHlightassembly.Attach
tblackouttracer)totop ofRHlightCon-
redwirewithwhitetracer)(or greenwire)to
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ANDWATERTRAILERS
contactplug(blackwirewithorwithoutwhite
t. NOTE:LHlighthasupperrubylens and
stripe.RHlighthasshort upperhorizontal
ong lowerhorizontalblackoutstripe.
pepaintoffcontactingsurfacesoftail-
properground.Line lightwithbracketand
andnuts.Attachbrownwire(withtwo black
l light.Attachwhitewire(withtwoblack
Connectdoublecontactplug(brownandwhite
rs)totop ofLHlightandsingle contactplug
ktracers)tobottomof LHtaillight.NOTE:
nsandlowerhorizontalblackoutstripe.RH
ntalblackoutstop stripeandlonglowerhori-
.
ackoutTaillightandStopLightDoor.
taillightdoorandremovedoor.Pullsealed
ket.
TION.
ushnewlamp unitintolightsocket
securewithtwoscrews.
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eLockRing
Assembly.Removesixstudnutswhich
ewheelandtire assembly.
EMBLYINSTALLATION.
ssembly.Mountwheelonhubandin-
nhubstuds.Tightenoppositestudnuts succes-
wheelonstuds.
OVAL.
eelandtireassemblyflaton floorwith
ecap.Removevalvecoreanddeflatetireinner
avyscrewdriverintheslotprovidedinthe
e tappingtheoppositesideofthe lockring
offwiththetireirons andremove.Stand
andsonoutsideedge,shovethe rimaway
attheedgeoppositethe valvestem(fig.21).
valvestemcomesstraight out.Pullinnertube
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NDWHEELBEARINGS
efromWheel
TION(figs.22and23).
tubeintotireand inflateslightly.Place
ingcarefulnotto pinchtube.Placewheelring
dsoperator.Forceoppositesideofring down
oniron inslotandpry outanddownuntilring
eto correctpressure,55pounds.
MOVAL.
ngbrakeson trailer.Placejackunder
cleartheground.
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ANDWATERTRAILERS
NDLE
nWheel
Assembly.Removewheelandtire
rewhubcap.
rustWasher.Pullcotterpin fromaxle
maxle.Removeaxlethrustwasher.
aringsandOilSealAssembly.Pullhub
rdandthenpushassemblybackintoposition
ngconefree.Pullouterbearingconeoff axle
ubanddrumassemblywithinnerbearingand
Assembly.Removesixcapscrews,
utsholdingdrumtohub.Pry drumawayfrom
oneandRollerAssemblyandOil
driftoni nsidefaceofbearingcone,and
ng.
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NDWHEELBEARINGS
ockRing
rBearingCupsfromHub.Placebrass
ringcuptoberemovedandhit firstonesideof
r.Byalternatinginthismanner,thecup will
bore,and dangerofwedgingthecupin the
JUSTMENTS.
ckuptraileruntilwheelis freeofground.
sfullysothatthere isabsolutelynodragon
hubcap.Pullcotterpinfrom axlenut.Tighten
on revolvingwheel,andthenslackoffnutuntil
tterpinholein spindle.Testforexcessiveend
of wheel,restoneendofwheelhub wrench
nd liftupontire. Byworkingwrenchhandle
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NDWATERTRAILERS
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NDWHEELBEARINGS
gonefinger onouterbearingcone,excessive
ydetected.Whenadjustmentiscorrect,re-
ut andinstallhubcap,usingwheelhub wrench.
removejack.NOTE:Bearingsareadjustable
toryoperationandlonglife dependonproper
n.
STALLATION.
movealloldgreasefrom insidehuband
eaningsolvent.Dryandplacehubon wood
upsquarewiththebore, havingthesmaller
hatit willbeonthe insidewhencupisin place.
overthecupfaceand driveincupuntilflush
ceold cupoverthenewoneand driveinnew
ghtwiththecupboreflange.Be surethatnew
auseifnot,it willalterthedistancebetweenthe
ntproperreassemblyofthewheel.Swabthe
eralpurposegreaseNo.2.
on hubsothatholesin drumlineup
xcapscrews,washersandself-lockingnuts.
eadtobe insideofdrum.
eandRoller AssemblyandOilSeal.
ndrollerassemblywithdry-cleaningsolvent.
purposegreaseNo.2. Slideinnerbearingcone
ingcupin hub.Insertoilseal anddriveinto
koverfaceuntilflushwithrim ofhub.
ssembly.Removealloldgreasefrom
dlewithdry-cleaningsolvent.Slidehuband
leandpushassemblyintopositionon axle.
neandRollerAssembly.Cleanouter
embly.Dryandhand-packwithgeneralpur-
ter bearingconeandrollerassemblyonaxle
rcupofhub.
ustWasher.Installthrustwasherand
ghtennut.
ssembly.Installwheelandtireassembly
a).
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ANDWATERTRAILERS
oval56
allation57
9
(fig.25).
areBendixmechanical11x!3/4inch
ervoequalaction,cablecontrolled.Thebrake
atthefrontof thebackingplatebytheanchor
; attherearby theadjustingscrewandspring;
bythehold-downspringsandpins. Aneccentric
shoeisusedfor adjustmentandisaccessibleat
kingplate.Thebrakesareforparkingpurposes
handleverattachedtotheright-handsideof
blesareconnectedtoabell crankleverlocated
connectedtothehandleverbymeansofa clevis
bly.
ndleveris pulledtowardrearoftrailer,
roughthebellcrankarrangementpull onthe
akewhichrotatesthearmandcam.Thecam
partat theanchorpinandforcesthemin contact
enthehand leverisreleased,theshoereturn
yfrom thedrum,andthecamarmspring pulls
alposition.
evispinsanddisconnectcableclevises
nutsonrearof backingplateone-halfturn.
ricstudsindirectionofforwardwheel
whenwheelsarerotatedbyhand.Backoffuntil
eneccentriclocknuts.
peningcoverplates.
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tighteningbrakeshoe adjustingscrews.
hroughbackingplate.Movehandleendof
rofwheelsuntilwheelsdrag.
firstratchetnotch,pullbrakecables
Adjustcableclevisadjustingnutsuntilcable
hholesinbell cranklever.Insertclevispins.
ns.Tightencableclevisadjustingnuts.
stingscrewsuntiltrailer wheelsarejust
railer wheelwithleastdragcanjust be
akeshoeadjustingscrewontighter wheeluntil
edposition.
openingcoverplates.
ovejack.
LYREMOVAL.
kundertrailer andraiseuntiltires
xleNut(par. 51c,d).
dBrakeDrumAssembly.Pullwheel,
mbly,asa unit,offaxle(par.51e).
evises.Removecotterpinsfrombrake
clevispinsand pullbrakecableclevisesfrom
vecamleverspring(black)shoeanchor
adjustingscrewspring(black).
nSpringandPin.Pushdownhold-down
egrees,andremovecups,spring andpin.
semblies.Liftoutbrakeshoeassemblies
E:Cleanallbrakepartsremovedwithdry-
anddiscardthosepartswhicharewornor
anttoallmovingpartsat factionalcontact
portionofcableandthen pullcablesthrough
exposethatportion ofcablewhichissheathed
onofcableand lubricatefreelywithcable
LYINSTALLATION.
mbly.Insertshoehold-downspringpins
stallbrakeshoesoverpins andmountadjust-
Placebrakeshoesand adjustingscrewinposi-
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ANDWATERTRAILERS
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ANDWATERTRAILERS
of adjustingscrewisin frontofbackingplate
downCupandSpring.Placecups on
hdown,andtwistcups 90degrees,lockingthem
Anchor andCamSprings.Installad-
orspringsand camleverspring.Thesecondary
st alwaysbeattachedtotheshoewhich hides
rakeDrum Assembly.Sameprocedure
sher.Sameprocedureasinparagraph53 f.
rocedureasin paragraph52a.
coverplatesandbrakedruminspection
rpinnuts oneturn.Theupperorsecondary
ceat eachendof0.010inch (0.010-in.feeler
nchorpin towardorawayfromcenterof
ual.Lock anchorpinnutsecurely.Adjust
0.010 inch.Lockeccentriclocknut.Expand
ansofadjustingscrews untilwheelsdrag.Place
notchandpullcablesuntil allslackisremoved.
and insertclevispins.Insertand spreadcotter
ampnuts.Loosen adjustingscrewsuntil
ag. Applybrakeleveruntilwheelwithleast
hand.Loosenadjustingscrewon tighterwheel
ual.Returnlevertoreleasedposition.Install
rplatesandbrakedruminspectionholecovers.
ack.Alsoparagraph55 aandparagraph
AL.
raileruntilwheelsare freeofground.
es.Removecotterpinsandclevispins
o bellcranklever.
Brackets.Removenutsandcapscrews
tsupportbracketsto undersideofbody.Re-
Assembly.Followprocedureinpara-
ollowprocedureinparagraph56d,e,f, g.
uitAssembly.Unscrewcapscrewson
movelock washers,cableconduitbracketand
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ratingcamleverandpull cableandcon-
ngplate.
LATION.
duitAssembly.Insertcableandconduit
ackingplate.Connectcabletooperatingcam
tbracketandbracketsealandinsert capscrew
gplate.Seethatcable conduitisinproper
w.
owprocedureinparagraph57a, b,c.
sembly.Followprocedureinparagraph
ckets.Installbrakecableandconduit
(19)).
.Installcableclevisesonbellcranklever
lland spreadcotterpins.
ustbrakecablesandbrakes(par.57 g).
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ANDWATERTRAILERS
63
on64
bodyandframeis carriedontheaxle
pesprings.Thespringsareheldto theaxleby
tassemblies.
econstruction,havingbrakeflangeswelded
thesemi-ellipticaltypeandhave10leaves.
hasaneyeformedat eachend.Thesecond
dfrontend eyeofeachspringasa safety
op leafshouldbreak.Bronzebushingsare
chendasabearingfor theshackleboltand
shackledattherear.Centerofsprings are
ownplateandboltassemblies(fig.26).
(1)).
tings(par.26a(2)).
rolCables.Disconnectbrakecontrol
er(par.26 a(3)).
Bolts(par.26a (5)).
WheelandTireAssembly.Loweraxle,
mblyasa unittogroundandroll outfrom
y.Removefournutsfromspringtoaxle
f boltsandremove.Liftbumperplateand
xle.Liftspringoffaxleandlower springto
rewhubcapfromaxlespindle,
rustWasher(par.51 c,d).
Assembly(par.47b).
gAssembly(par.51e).
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ANDWATERTRAILERS
Removefivecapscrewnutsandlock
te.Removefivecapscrews.Prybackingplate
pullbackingplateoff axle.Loweraxletothe
debackingplateontoaxleand position
eslineup.Installfive capscrews,lockwashers
rnately,andevenly.
Assembly.Slidehub assemblyonto
positionon axle.
asherand slottednutonaxlespindle.
sonAxle.Placethesprings inaparallel
sothatspringeyesrest ontheground.Place
ackingplatesandhubsupon thespringssothat
oppositedirectionfromwrap-aroundspring
sition.
Assembly.Installupperspringtieplate
verspringand axlewithplateatbottom.In-
onhold-downboltsandpositionagainstaxle.
olts.Tightennuts andcenterpunch(hammer
eadsatthe nuts.
Assembly.Placetheaxleandspring
withthe wrap-aroundspringeyestothefront
pringeyesinthe frontspringhangersandthe
pringshackles.
ts(par. 27a(15)).
ssemblies(par.48a).
s.Installlubricationfittingsin spring
ollowprocedureinparagraph52a.
MOVAL.
pbodyuntiltensionon springisrelieved.
procedureinparagraph61b,c,d,e.
bly.Removefournutsfromspringtoaxle
gtieboltplate.Lift springuppertieboltplate
ng.Removeandlowerspringtoground.
STALLATION.
Positionspringonaxle withwrap-
of trailer.Installuppertiebolt plateandbolts.
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onbolts.Installnutson bolts.Tightennuts
adsatthe nuts.
ockingandlowerbodyuntilspring
ds.
ts.Lineup springandinstallspring
ar.27a (15)).
gs.Installlubricationfittingsinspring
teboltsthroughfittings.RefertosectionVI.
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ANDWATERTRAILERS
RELISTS.
heelcargoSNLG-518
heel,watertank,250-gal...SNLG-527
ubricatingmaterials,recoil
cellaneousrelateditems.SNLK-l
eldingmaterials,gasesand
erepairofautomotive
t,SNLN-19
vicecommand,automotive
clatureListsarelistedabove.
s maintainedasthe
SupplyIndex"OPSI
NS.
850-15
10-580
10-455
10
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PublicDomain,Google-digitized
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PublicDomain,Google-digitized
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PublicDomain,Google-digitized
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PublicDomain,Google-digitized
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athitrust.org/access_use#pd-google
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