TM 9-1783A A-C HD-7W DIESEL ENGINE

8/10/2019 TM 9-1783A A-C HD-7W DIESEL ENGINE

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E

C14)

NELONLY

P u b l

i c D o m a i n , G o o g l e - d i g i t i z e d

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a t h i t r u s t . o r g / a c c e s s_

u s e # p d - g o o g l e


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RDEPARTMENT

,January9,1943

E

s-ChalmersHD-7W)

C14) (^n^

onofthe

eAllis-Chalmers

32-3

4-11

ceduties

oubleshooting

tractor....10 27-38

sfromengine..11 39-55

12-1456-88

f engineparts1589-93

1794-129

esonengine.. 18-22130-143

tractor23-24144-151

ment25-26152-153

27-28154-155

30156-160

162

P u b l i c D o m a i n , G o o g l e - d i g i t i z e d

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E—MEDIUMTRACTORMl(Allis-ChalmersHD-7W)

C14)

tofmanual2

for theinformationandguidanceof

ersonnel.Itcontainsdetailedinstructionsfor

assembly,maintenance,andrepairoftheDiesel

theexceptionoftheengineaccessories

rMl (Allis-ChalmersHD-7W).Itsupple-

ndtechnicalmanualspreparedfortheusing

vematterandillustrationsareincludedto

teworkingknowledgeofthemateriel.

GEMENTOFMANUAL.

criptionof theengineandoutlinesits

desatable ofdataandidentifiestheacces-

ariousmaintenancetermsusedinthis

variousmaintenanceoperationstotheproper

ctiontodeterminethegeneralcondition

ctitemsinneedofcorrectionor repair.Such

willdomuchtoavoidfailureorbreakdownin

containsatroubleshootingguide.

proceduresforremovingtheenginefrom

essoriesfromtheengine,disassembly,repair

mblies,installationofaccessories,andthein-

kin thetractor.Ifcompletedisassemblyis

erequiredmaintenanceoperation,onlythose

whichpertaintotheneededrepairshould

esandfitsfor componentpartsoftheengine

nrepair arelistedinsectionsXII andXIV.


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ment,andreferencestoothertechnical

engineandthe tractorinwhichitis used,

ections.

ainingtothismanualwillbefound in


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C14)

rough6).

cooled,3-cylinder,2-cycleDiesel.Itdiffers

ycleengineinthatitrequiresonly 2strokes

onedown,tocompleteanoperatingcyclein-

e4-cycleengine.Inthe 2-cycleengine,intake

erwhenthepistonis atthebottomofits stroke;

essionstroke;everydownstrokedelivers

dexhauststrokesofthe 4-cycleengineare

ngineexhaustsburnedgasesandfillsitscylin-

thepumpingactionofthe engineitself,butby

ountedonthe rightsideofthe engineand

nkshaft.Asthepistonnearsthe endofits

valves(2foreachcylinder)in thecylinder

ned gasestoescape,andthepistonuncovers

partofthe cylinderwall(64holesineach

shair fromtheblowertorushin, forcing

heexhaustvalvesand fillingthecylinder

air(fig.2).Asthe pistonrisesonthe com-

fftheintakeports, theexhaustvalvesclose,

mpressedintoy1(iofits formervolume.This

rtobecomeextremelyhot.Achargeoffueloil

mpressedairbytheinjectorjustbeforethe

s stroke.Thefuelisignitedby thehotair

causedbythecombustionofthe gasesformed

ts powerstroke.

adilyaccessible.Ontheright-handside

omthe operator'sseat,islocatedtheblower,

pandthirdstagefuel filter,lubricatingoil

rpump.Thestartingmotor,air heater,thermo-

oraremountedontheleft-handside.

rpump aredrivenbythelowerblower

neratorare drivenbyV-beltsfromapulley


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ofDieselEngineMediumTractorMI

dtiminggear coverarebolteddirectlyto

erblock.Enginelifterbracketsareprovided,

cylinderheadtoassistinthe removalorin-


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C14)

ofEngineShowingCirculationofAir

.

C14

dry(approx.)1,550Ib

uin.

percylinder.,2


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LTER

E

ER

OLER

OSE

OSEANDOILCOOLERCONNECTION

UBE

ngine


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E—MEDIUMTRACTORMl«Allis-ChalmersHD-7W)

C14)

gine

wedfromoperator'sseat):

ise

se


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ngine


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E—MEDIUMTRACTORM1(Allis-ChalmersHD-7W)

C14)

ngine

se

crankshaftspeed:


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C14)

ANCEDUTIESBYECHELONS

sedin thislistofmaintenanceallocations

ganizationregiments,battalions,companies,

tecompanies(firstandsecondechelons).

celightmaintenancecompanies,ordnance

mpanies,ordnancedivisionalmaintenance

nceshops.

nceheavymaintenancecompanies,andser-

cebaseregiments,ordnancebases,arsenals,

s.

ofservicing,cleaning,lubricating,tight-

andnuts,and makingexternalad-

ofsubassembliesorassembliesand

art,subassemblyor

esandreplacingitwith

ebuilt part,subas-

heverthecasemaybe.

to,orreplacementofthe

mblythatcanbe

mpletelydisassembling

blies,anddoesnotre-

eting,machining,fit-

ncing.

onditioningandreplac-

nanyunserviceable

mblyofthevehicle,in-

machining,fitting,alin-

gandtesting.


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anualReference.Manysecondeche-

nTM9-783Bareoften donebyordnance

orinformationontheseoperations,referto

manual.

TION.

edwillnormallybeperformedinthe

Operationsallocatedtotheechelonsasindi-

mplishedbytherespectiveechelonsinemer-

NE2nd3rd4th 5th

adjust)X

Ex

reline)X

EX

nal)—replaceX

al)—replaceX

nalandinternal)—repairX

eviceandreplaceX

aceX

irX

ildEx

trols,radiator—replacex

trols,radiator—repair..X

eorrechargeX

rical—replaceX

rical—repairEX

eplaceX

X

(inserts)—replace....EE X

erts)—replaceEX

—service(adjust)and

dersleeves—rebuild(re-


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C14)

d2nd3rd4th 5th

X

X

dEX

ne—replaceX

ne—repairX

ssembly,oil—service

ssembly,oil—repair..X

ondition)EX

ceX

X

dEX

ndreplaceX

dary—serviceandre-

dary—repairX

aceorrepairX

ud(recondition)EX

lowerpan,manifoldand

eX

viceandreplaceX

pairX

buildX

vice(adjust)andreplaceX

uildEX

—replaceX

—repairX

—rebuild(recondition)..EX

—replacex

—repairX

—rebuildEX

eel—replaceX

eel—rebuild(recondition)EX

uthorizedtoremoveandreinstallengineandtransmission

ontrolleddifferentialassembly,andotheritemsmarked

enitisnecessarytoreplacean itemmarkedbyanasterisk

subassemblyorunitassembly,theassemblymarked

ovedfromthevehiclebythesecondechelonuntil

romahigherechelon.


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fd2nd3rd4«h 5th

ce..................X

r...................X

d..................Ex

(external)— replace..x

(external)— repair.... EX

(internal)— replaceor

ce..................X

ld(recondition)......Ex

,fuel— replace.......x

,fuel— repair........EX

....................X

..................X

...................X

— serviceandreplace..X

— replace..........EX

orupper)— repair....X

ce..................EEX

lace................X

pair................X

build................X

ace.................EX

air.................X

uild................X

replace..............X

repair...............X

rebuild..............X

g— replace...........EE X

e....................EEX

..................X

adjust)............x

ce..................x

FIRE

NTETRACHLORIDE,

ace.........X

NTETRACHLORIDE,

............X

NTETRACHLORIDE,

............EX


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




C14)

S2nd3rd4th5th

eplaceEx

epairX

ebuildEX

placeX

pairX

build(recondition)....EX

er—replaceX

er—repairX

k—replaceX

k—repairX

k—rebuild.EX

nt—replaceX

nt—repairX

nt—rebuildEX

upport—replaceX

upport—repairX

upport—rebuildEX

r—replaceX

r—repairX

r—rebuildEX

m—service(adjust)and

m—repairX

m—rebuildEX

ceorrepairX

dEX

—replaceX

—repairX

—rebuildEX

s,air—serviceandreplaceX

s,air—repairX

dreplaceX

eloil—serviceandre-

eloil—repairEX


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d3rd4th5th

eater—replaceX

eater—repairX

viceandreplaceX

airX

AMEASSEMBLY

ke—service(adjust)..X

ke— replaceorrepair

ke-off—replaceX

ke-off—repairX

ke-off—rebuildX

ng—service(adjust)...X

ng—replaceorrepair...X

ng—rebuildEX

ringclutch,transmission

rnal)—replaceX


nal)—replaceX


rnalorinternal)—

aceX

irX

ervice(adjust)andre-

eX

X

dEX

support—replaceorre-

e—replaceorrepair...X

gine—replaceX

gine—repairX

X

s—replaceorrepair....X

s—rebuildEX


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C14)

ES2nd3rd4th5th

eplaceX

epairX

ebuildEX

placeX

pairX

buildEX

paceX

pirX

bildEX

ol—replaceX

ol—repairX

lassembly—replace..X

lassembly—repair...x

mblies—replaceX

mblies—repairx

—replaceX

—repairX

aceX

airX

-ChalmersHD-7W)—

-ChalmersHD-7W)—

ssemblies)xE

EMBLY

y—service(refill)and

y—repairX

y—rebuildEX

rake—service(adjust)X

rake—replaceorrelineX


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2nd3rd4fk5th

placeX

—replaceX

—repairX

ceandreplaceX

rX

rake—replace......X

rake—repairX

ontandrear)—replaceX

ontandrear)—repairX

ontandrear)—rebuildX

X

X

EX


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C14)

TROUBLESHOOTING

eengineis anecessarypartofmain-

wnsanddelayscanoftenbeavoidedifregular

deandminordefectsorirregularitiescorrected

tocauseforextensiverepair.

ctionofengineforloose ormissingbolts,

kallcontrollinkageforwear,absenceofcotter

rationofcontrols.

yforleakinggaskets.Observeifanyfuel

ingatconnectionsorarecrackedorbroken.

sesforgeneral condition.Awaterhosemay

tedinside.Rottedhosesmay bedetectedby

eldreadilyto pressure,replacethem.

torbeltsfor wearorsignsofbreakage.

orbareor brokenwires,looseconnections,

fflerforbrokenorcrackedsupports,andpunc-

kexhaustmanifoldforleakinggasketsor

eneratorandstartingmotor.Observeif

dirty,andcommutatorsorbrusheswornor

aror generalconditionwarrantsrecondi-

ersfromengine.Observeifairinletports

ed.If sludgeandcarbonarebuildingupin

inlet portsincylinderlinersare partially

geandcarbonshouldbe removed.Inspection

ofpistons,rings, andcylinderlinersby

swhileengineis turnedbyhand-cranking.

filterandinspectmetalfilter elements

er.Metalchipseitheronscreensor inbase

bearingsorpossiblysmall brokenpieces


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TROUBLESHOOTINGONVEHICLE

unning.

ununtiloperatingtemperatureis reached.

evenoperationorunusualnoises.Hold fingers

tube(F,fig.4). Iftubeisopen,air escaping

en,removeit, cleantheopeninginthe

.It isimportantthatthistube bekeptopen

dfuelcollectedinair boxtodrainout through

mpforleaks.

STOP"notch.Observeinstruments.Oil

steraminimumof 25poundspressure.Fuel

steraminimumof 20pounds.Ammetershould

tteryisfullycharged).Readinstructionscon-

ningto theseinstruments.

eair inlethousingfromblower.Inspect

Ifrotors canbeshakenconsiderably,itindi-

ouplingorblowerdriveshaft.Excessiveback-

susuallyindicatedbysignsof rotorlobes

Aworn bearingwillcauserotortorub on

sareusually indicatedbythepresenceofoil

ves,pistons,rings,andcylinderliners

ompressiontester.Thistesteris designedto

ngcompressionofeachcylinder.Highcom-

ryforefficientoperationofa Dieselengine.

spectall fuel,oil,andairline connec-

sshouldbetightenedornecessaryrepairs

eaterand airheaterfuelpump.Check

ofclutch.Removerockerarmcoverfrom

entsofvalvesandinjectors.Refertopara-

en madeuptoaidthe maintenanceper-

eofirregular engineoperation.Detailed

hevariousdisordersisoutlinedin themain

Remedy

ne overChargebatteryorinstallbattery

kengineat least


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C14)

utof

ective.

ns.

sout

s.

norloose

sout

ners

.

onnec-

ment.

utoff

pand

amp

er to

83B

ation

.

.

tfuel

uel

top-

eplace

efillcups,

e.

dhand-

holes.


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Remedy

OKEFROMEXHAUST.

inair

skets

s.

KE.

s.

rcleaner.

ctive,re-

amount

ets.

orstop-

parts.

.

tors.

21).

KNOCKS).

.

cracked.

stuck

.

chclear-

ace.

fcracked,

sticking.


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C14)

adjust-

ket.

ance

DCYLINDERLINERWEAR.

onsand

bricat-

ended

edto

n.

gengine.

ystem.

DS.

con-

to

rod

adeand

9-

ubri-

inerun-

e of

el.

eptina

tainers

thoil.

endedin-

).

mended

operly.

aners

onnec-

eif

enter-

hed

l.

fuel.

s,with


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orun

ooil

praytips.

ton

gengine.

ed.

s.

lrough

nt.

torun

ute

not

adeof

oler,

maged

nec-

low

e,of

3B.

e,of

3B.

henfill-

ethat

askets

dition.

gtem-

.

ft.

lowoil

uldbe

atfull

sub-

DSEATS.

ce.Adjustto0.010-inch

cesprings.


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E—MEDIUMTRACTORMl(Mis-ChalmersHD-7W)

C14)

eplace

dto:!(i;>-inchwidth.

turetooSeeTM9-783B,CoolingSystem.

meetingU.S. Army

saroundCleanandrecondition.Replace,if

essary.

cevalve.

ngde-

es.

ween

boned.

sfrom

em-

arance.

eof fuel.

SUMPTION.

.

.

king.

toomuch

ilot

s.

inslots.

ystem.

slots.


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OMTRACTOR

actor10

FROMTRACTOR.

4-in.(2)

NCH,open-end,

in.

H,open-end,

.(2)

open-end,1-in.

ENCH,socket,i/2-in.

EMANDCRANKCASE.

nenginecrankcase,andshutofffuelat

k.

ANDHOOD.

.

in.wrenches)andliftprecleaneroffpre-

oosenhold-downboltsateachcornerofhood.

odoff overexhaustpipeandprecleaner

tatleftrearcornerfrominsidebattery box.

ESHAFTGUARDANDFRONTFENDERS.

NCH,9/1(i-in.(2)

mfrontendofwinchdrive shaftguard

e3boltsfromrearofguard(two3A- and

ftoffguard.Remove3boltsand2cap screws

1 boltand3capscrewsfrom rightfront

fig.10).

ESHAFTGUARDBRACKET.

holdingguardbrackettoenginesupport

ebracket.Removethecorresponding2cap


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C14)

d

hDriveShaftGuard


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OMTRACTOR

tFender

chDriveShaftGuardBracket


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C14)

ineSupportBottomCover

ofradiator.Loosenthe2 remainingcapscrews

support(V8-in.wrench).

NDOUTLETWATERCONNECTIONS.

NCH,socket,V2-in.

ndslidehoseonto radiatorinletpipe(screw-

ewsfromenginesupportbottomcover(y8-in.

Remove2capscrewsfromlowerradiatorcon-

2-in.wrench).

LY.

rearendofthefan shaftandloosenthe

rew.Remove3capscrewsholding fanas-

cover.Removefanbeltsfromlowerpulley,

tout fanassemblyandbelts.

RCONTROLANDHEADLIGHTWIRES.

ontrolrod.Disconnectheadlightwire

eathgenerator.Donotlosefuse.


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OMTRACTOR

pScrewsfromFanBracket

Assembly


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E— MEDIUMTRACTORMl(Allis-ChilmersHD-7W)

C14)

diatorAssembly

SSEMBLY.

previouslyloosenedholdingradiatorto

earoundradiatorassemblyunderheadlights,

andlift offradiatorassembly.

NGMOTOR.

fromstartingmotorswitchterminal.Tape

ventits contactingmetal.Liftammeterand


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OMTRACTOR

gLubricatingOilPressureGageLine

olwirefromterminal.Removepinfrom

d.

UTCH.

engagedsothat throwoutbearingwill

gineismovedaheadto beliftedoutof

SPECTIONHOLECOVER.

iftofffloor plateoverinspectionhole

move2capscrewsfrom.coverovermaster

132)(3/4-in.wrench).Removecover,pull

oveyokepin fromendofmasterclutch

RCLUTCHRELEASEBEARINGLUBRICATING

ngtube(fig.19)to masterclutchrelease

fitting intomasterclutchcompartment.Pre-

twistingwhile removingnut.


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E—MEDIUMTRACTORMl'AllisChalmersHD-7W)

C14)

D,

opScrewfromCliponThermoGageLine

RESSUREGAGELINE.

.

gelinefromenginebeneathblower.

NES.

n.(2)

fromfuelpumpto lowercouplingon

sconnectinletfuellineto fuelpump.Dis-

mtopof secondstagefuelfiltertothird stage

ngine.Disconnectfueloilpressuregageline

ter.Disconnectfuelreturnlineat fitting

wl.CAUTION:Donotbendtheselines as

dmaybreakifbent.

OGAGETUBEANDLINE.

Hopen-end,iVi0-in-

efromrearofwateroutletmanifoldand

elinetoenginerear lifterbracket.Replace

clipis removed.


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OMTRACTOR

ThrottleRod

ECONTROLSANDWIRES.

edalatstarting motorswitch(pliers).Dis-

aftlevertogovernorrodby removingcotter

gtherod tothegovernor.Disconnectshut-

rshaftleverrodby removingcotterpinand

dtothe airshuttershaftlever.Disconnect

norrodby removingcotterpinconnecting

isconnectbatterycableatbatteryandstart-

ench).Disconnectammeterwirerunningto


/ h t t p : / / w w w . h






C14)

tsfromFrontEngineSupport

river).Disconnectgroundterminalfrombat-

ATER.

,«l6-in.(2)

ineatcheckvalveon heatercover(two

veclipfromcylinderblockendplateholding

nut frombolt(^lfi-in.wrench).Remove2

ver(Vfe-in.wrench),removecover,anddis-

wrench).

ETHOSE(fig.3).

ushhosebackontoair inletelbow.

BREATHERTUBE.

vernorbreathertubeandlifttube from


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OMTRACTOR

GLUBRICATINGTUBE

pScrewsHoldingEnginetoSpacer

SHIMSFROMFRONTENGINESUPPORT.

-in.

boltsatouter endsoffrontenginesupport.

upportwith abarandremoveshims.CAU-

shimsmustbe installedintheiroriginal

tertheenginealinement.Wirethemtothe

EFROMSPACER.

sholdingenginetospacer(%6-in.wrench).

emovedfromthe outsideofhousingwhile

kingthroughthe masterclutchinspection

OMTRACTOR.


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C14)

ginefromTractor

bracketsofengineat bothendsofcylinder

ughtoslide itahead.Reachbetweenflywheel

randremove12capscrewsholdingmaster

wrench).Pushclutchassemblybackonshaft.

tractor.


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ESFROMENGINE

omengine11

SORIESFROMENGINE.

NCH,13i(i-in.

WRENCH,l5/16-in.(2)

NCH,l5'1(i-in.

open-end,7/8-in.

NCH,socket,9/16-in.,

-in.extension

NCH,socket,y8-in.,

n.extension

NLETELBOW.

with6-in.extension

orted,openhingedcoverandremovethe

thepreheaterinletelbowtothe cylinderblock

ith6-in.extension)andremoveinletelbow.

wholdingairheatertocylinderblock(%(i-in.

eater.Removeremaininghandholecover.

ANIFOLDANDMUFFLERASSEMBLY.

ding exhaustmanifoldandmufflerassem-

.wrench)andlift offexhaustmanifoldand

ANDBRACKET.

H%-in.

holdinggeneratortogeneratorbracketand

wrench).Removethe3 capscrewsholding

movebracket(Vfc-in.wrench).

OTOR.

CH,socket,V8-in.,

andthebolt holdingstartingmotorand

sing,jarstartingmotor loose,andliftout.


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E—MEDIUMTRACTORMl<AidsChalmersHD-7W)

C14)

eheaterInletElbow

rHeaterBurnerUnit


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ESPROMENGINE

austManifoldandMufflerAssembly

nerator


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C14)

rtingMotor

gineFrontHanger


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ESFROMENGINE

D

nlet HousingandElbow

NTUBEANDELBOW.

CH,3/4-in.

dingdraintubeclip(%,rin.wrench)and

ow(%0-and3/4-in.wrenches)(fig.22).

AND.

nginestandbyinserting lugsofstand

oxhandholesandtighteninglug nuts.

NTHANGER.

'%,i-«!.wrench)holdingenginefront

cover.Removehanger.


/ h t t p : / / w w w . h






C14)

ringClipfromDifferentialLeverPin

USINGANDINLETELBOW.

ngfuelshutoffrodto shutoffleverassem-

emovethe4cap screwsholdingairinlet

(''1(i-in.wrench)andlift offairinlethous-

airshutoffrods.Removescreenassembly.

CONTROLHOUSINGASSEMBLY.

over.

randremoveyokepin(pliers)holding

ectorcontroltubeassemblylever(fig.28).

trolHousingCover.

capscrewsholdinggovernorcontrol

ogovernorcontrolhousingassembly(screw-


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ESFROMENGINE

vernorControlHousing

ontrolLink.

oldinggovernorcontrollinktodifferen-

y(pliers),andliftoutgovernorcontrollink.

rolRodSpring.

odspringbyunhookingitfrom spring

(fig. 27).

ntrol.

hrottlecontrolrodtogovernorvariable

.

trolHousingAssembly.

holdinggovernortocylinderblock("/Ki-

capscrewsholdinggovernorweighthous-

overnorcontrolhousingto governorweight

andremovegovernorcontrolhousing


/ h t t p : / / w w w . h






C14)

rdStageFuelFilterAssembly

GEFUELFILTERASSEMBLY.

H,%-in.

fromthirdstagefuel filterassembly

.Removethe2capscrewsholdingthird

ocylinderhead(%6-in.wrench)andremove

bly.

VESHAFT.

CH,»/16-in.(2)

e 2capscrewsholdingflywheelhousing

sing.Removeblowerdriveshaftretainer

),install capscrewinthreadedendof

shaftfrom blowerdrive.

UELPUMP,WATERPUMP,ANDGOVERNOR

EUNIT.

NCH,5/8-in.

holdingwaterpumpoutletpackingflange

rench).Loosenhoseclampholdingwater

wdriver).Removethe4capscrewsholding

tocylinderblock(5/8-in.wrench),andremove

pump,andgovernorweighthousingassem-


/ h t t p : / / w w w . h





ESFROMENGINE

owerDriveShaftRetainerSnapRing

werDriveShaft


/ h t t p : / / w w w . h






C14)

pScrewsfromWaferPump

LIP

pScrewsHoldingBlower


/ h t t p : / / w w w . h





ESFROMENGINE

singandElementRemoved

RANDLUBRICATINGOILFILTER

be.

holdingwaterbypasstubeto oilcooler

gandElement.

holdingoilcoolerhousingto oilcooler

ngandoilcoolerelement.

apter.

.

holdinglubricatingoilfilter andcooler

ndremoveoilcooleradapterand lubricat-

Y.

asherfromfrontendofcrankshaft.


/ h t t p : / / w w w . h






C14)

pScrewsfromLubricatingOilFilter

nDrivePulley


/ h t t p : / / w w w . h





ESFROMENGINE

gBypassTubefromThermostatHousing

oved,reinstallthecapscrewthatwas

tsinpulleyand drawfandrivepulleyoff

).Thenremovecapscrewfromshaft(l%0-

e2Woodruffkeysfromcrankshaft(pliers).

ASSTUBEASSEMBLY.

holdingwaterbypasstubeto bottomof

ovethecapscrewholdingwaterbypasstube

ate.Removewaterbypasstube.

TLETMANIFOLDANDTHERMOSTAT

ding watermanifoldtocylinderhead

dandthermostathousingassembly.


/ h t t p : / / w w w . h






C14)

D

terOutletManifold

gOilGageTube


/ h t t p : / / w w w . h





ESFROMENGINE

Pan

NEFROMFUELRETURNMANIFOLD.

H,open-end,%-in.

restrictionfittingat rearoffuelmanifold

8).

IVEASSEMBLY.

CH,open-end,3/4-in.

in.

e adapterfromblock(%-in.wrench)

hholds ittolubricatingoil filtertube.

ebearingoilpipe assemblyfromcylinder

bowassembly(y16-in.wrench)andre-

crewsholdingblowerdriveto cylinderblock

andremoveblowerdriveassembly.


/ h t t p : / / w w w . h





E— MEDIUMTRACTORMl(Allis-ChalmersHD-7W)

C14)

PumpAssembly

sholdingoilpan tocylinderblockand

oveoilpan.

SSEMBLY.

H9/16-in.

holdingoilpumpsprocketsupportto

the 2studnutsholdingoil pumpbody

aringcap (%6-in.wrench),thecapscrew

ketto oilpumpinlet(Vi-in.wrench),and

ench)holdingoilpump outletpipetooil

8-in.wrench).Removeoilpumpassembly.

LVEASSEMBLY.


/ h t t p : / / w w w . h





ESFROMENGINE

holdingoilpumpbypass valveassembly

bypassvalveassembly(fig.125).

RIVE.

esprocketandshaftassemblybymaneu-

sitiononfrontmainbearingcap.Liftoff oil

ocketandremovesprocketandshaftassem-


/ h t t p : / / w w w . h





E— MEDIUMTRACTORMl(Allis-ChalmmHD-7W)

C14)

E

.....................12

mblies...........................13

blies............................14

avethepropertools andequipmentbefore

onsonthisengine.It isalsoimportantthatthe

tobedonebecleanand, especiallyinassem-

betakento havethepartsthoroughlyclean

theengine.

boxesavailablesothatbolts,nuts,and

assemblingmaybekeptseparatewith the

heyareremovedtoavoidconfusionandloss

ngine.Cleanand examinepartsastheyare

istofparts needingreplacement.

assembliesthatshownoneedof repair.

edisassemblyofeachsubassembly.Follow

disassemblyisnecessary,otherwiseuseonly

rtainingtothesubassembliesinneedof repair.

stof fitsandtolerancesfornewengines

mallowablewornclearances.Whenrebuild-

ne,thenewclearancesshouldbeusedas a

esareonlytoindicateamountofwearallowed

ingaparticularpart.

senewgasketsthroughouttheengine.This

swhenengineis putbackinoperation.Use

apscrewswherespecified.Capscrewsenter-

vecoarse(U.S.S.)threads.Thoseenteringthe

avefine(S.A.E.)threads.Besureall bolts

edfirmly.


/ h t t p : / / w w w . h





linderHeadStudNuts

nderHeadAssembly


/ h t t p : / / w w w . h






C14)

UBASSEMBLIES.

end,3/4-in.

in.WRENCH,open-end,7/8-in.

V2-in.

pWRENCH,socket,%(i-m-,

tension

ENCH,socket,s/8-in.

thWRENCH,socket,Hi0-in.

WRENCH,socket,3/4-in.

ENCH,socket,i:fi(i-in,

ension

CH,socket,15/i(i-in.,

.extension

EADASSEMBLY.

in.WRENCH,socket,i5/16-in,

.extension

r.Removethe4capscrewsholdingthe

bracketstobalanceweightcoverandflywheel

Usinglr;1(rinchsocketwith6-inchextension,

dstudnuts andliftcylinderheadfromengine.

e oronblockssoinjectortips andcam

ged.Removecylinderheadgasket.

5/8-in.

withWRENCH,socket,i%6-in,

ithextension

movethe 6capscrewsholdingflywheel

6-in.wrench).Insertthe2specialcapscrews

flywheelandforceflywheelfromcrankshaft

OUSING.

ENCH,3/4-in.

and4 boltsholdinghousingtorearcylinder

enches).Removethe12capscrewsinside

topand3on eachsideofcrankshaft).Use

renches.Removeflywheelhousing.


/ h t t p : / / w w w . h





E

eelfromCrankshaft

wheelHousing


/ h t t p : / / w w w . h





E-MEDIUMTRACTORMl(AllisChalmersHD-7W)

C14)

anceWeightCover

anceWeightfromCamshaft


/ h t t p : / / w w w . h





E

pScrewfromCamshaftEndBearing

EIGHTCOVER.

dingbalanceweightcoverandremove

ANDBALANCESHAFTASSEMBLIES.

eWeights.

.

entheteethof camshaftandbalanceshaft

ngnutsholdingbalanceweightsonshaft(IV-z-

eweightsoffshafts(pry bar).

ENCH,socket,«ltrin,


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(Mils-ChalmersHD-7W)

C14)

ckScrewsfromCamshaft

mshaftAssemblyfromCylinderBlock


/ h t t p : / / w w w . h





E

erGearAssembly

nkshaftGear


/ h t t p : / / w w w . h






C14)

nkshaftFrontCoverAssembly

acerandOilStinger


/ h t t p : / / w w w . h





E

orCylinderBlockEndPlate

ingeachrearbearingofeachshaft torear

%6-in.wrench).Capscrewsareremoved

shaftandbalanceshaftgears.Removethe3

earinglockscrewsholdingcamshaftinter-

(screwdriver).

BalanceShafts.

eshaftoutofcylinderblock.Rearbearings

swillremainonshaft.

gs.

meachfrontbearingandpull bearingsout

ASSEMBLY.


/ h t t p : / / w w w . h






C14)

nnectingRodBearingCap

nnectingRodandPistonAssembly


/ h t t p : / / w w w . h





E

ylinderLiner

enterofidlergearhub.Lift offidlergear,

andspacer.Removecapscrewandremove

ybesideidlergearassembly.

GEAR.

t,%6-in.

moveoilslinger,andprygear offcrankshaft.

FRONTCOVERASSEMBLY.

H,3/4-in.

ingfrontcoverassemblyandremovefront

pacermayormaynotcomeoff withfront

ANDPUMPDRIVESPROCKET.

slinger,oil pumpdrivesprocketand

procketkey.

DERBLOCKENDPLATE.

ingcylinder'blockendplatetocylinder

ckendplateoff dowels.


/ h t t p : / / w w w . h






C14)

tfromMainBearingCap

INDERBLOCKENDPLATE.

H,K-in.

ingfrontcylinderblockendplateto cylin-

e offdowels.


/ h t t p : / / w w w . h





E

inBearingCap

DCONNECTINGRODASSEMBLIES.

11/i(i-in.

dup.Removethecarbonfromupper

ylinderliners.Removecotterpinsfromall

s).Removenutsfromoneconnectingrod

emovebearingcapandpushpistonand

opof cylinderblock.NOTE:Pistonscannot

ofcylinderblock.Afterremovingpistonand

ring backonrod.Repeatforremaining


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl<Aliis-ChalmersHD-7W)

C14)

haftfromCrankcase

INERS.

cylinderliner.

dmayslide outwithpistonwhenremov-

nduseremovertool(fig.59) asfollows:

tside up.Slipthelowerpuller clampup

peredseat,andcockclamponrod soitwill

Whenrodis droppeddownthroughliner,

tsseat inahorizontalposition.

clampdownagainstthetopedgesof the

strikethe upsetheadonupperend of

ththepullerweight,thusreleasingthe liner.

TASSEMBLY.

1!5/16-in.

p

msideup.Removethecotterpins(pliers)

fromthemainbearingstuds.Install puller

romposition(fig.61).Removemainbearing

block.Removeuppermainbearingshells


/ h t t p : / / w w w . h





E

ASSEMBLIES.

semblytogetherandseparatefromother

followingprocedure:

e-

n.

.

.

n.

.

rHead.

NTROLTUBEASSEMBLY.

RVER,10-in.

,rin.

ingbracketoneachendtocylinderhead

mblyfromhead.Removerearcontroltube

adjustingscrewsinrackcontrollevers(screw-

versandspring fromtube.Drivegroovepin

mmerandpunch)andremoveleverand

omtube.Pressbearingsfrombrackets(arbor


/ h t t p : / / w w w . h





E— MEDIUMTRACTORMl«»llisChalmersHD-7W)

C14)

pScrewsfromInlectorControl

ntrolLeversfromControlTube


/ h t t p : / / w w w . h





E

ectorFuelLine

ACKET

kerArmBracketBolts


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(AllisChalmersHD-7W)

C14)

ckerArmShaft

ckerArm


/ h t t p : / / w w w . h





E

ectorClampNut

OR

TOOL

ctor


/ h t t p : / / w w w . h






C14)

shRodSpringSeatRetainer

ELLINES.

n.

teachendoflinesand removealllines.

ngsfromwhichlineswere removed.

MASSEMBLIES.

H,open-end,y2-in.

Va-in.wrench).Removethe2boltshold-

ackets(3/4-in.wrench)tothe cylinderhead

romtheshaft.Slidethe shaftfromtherocker

arms.Unscrewrockerarmsfrompush rods.

gtherockerarmshaft,raisethe3rocker

oughsothatshaftcanbe pulledendwise;do

ackwithshaftin placeandimposealoadon

WRENCH,socket,%,-,-in.

sherfromeachclampstud(''^-in.wrench).

einjectorremoverandremoveinjectors.


/ h t t p : / / w w w . h





E

mblyRemoved

ANDCAMFOLLOWERASSEMBLIES.

NCH,open-end,V2-in.

NCH,socket,Vio-in.

ockwashersholdingcamrollerguideto

ketwrench).Removecamrollerguide.Insert

pushrod andbetweenjamnutandspring

amnutagainsttoolto compressspring(V2-in.

reholdingupperspringseatinplacefrom

pushrod,spring,andspringretainers.Insert

owerassembly.Repeatforeachpushrod.

OLDS.

CH,open-end,y8-m.

n.


/ h t t p : / / w w w . h






C14)

mFollowerAssembly

oldrestrictionunit(fig.44)(3/4- and%-in.

manifoldconnectorjamnuts(fig.71)(filter

nnectors.Pulloutfuelreturn manifold.Remove

ner.

LVES.

ressorandinjectorremover

rmbracketcapscrewsthroughremover

pring compressorandinjectorremovertool

rarmbracketcapscrewholesinhead(fig.74).

ervalvespring retainerandcompressspring.

etspringupandremoveretainerand spring.

nturn headonsideandremovevalves.


/ h t t p : / / w w w . h





E

eCompressorToo/

ORAND

L

veSpringLocks


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(Allis-Chalmers

C14)

veSpring

ES.

vestemguide

nd supportitwithblocksat eachend.

hspecialtooland hammer.

NSERTS.

ofvalveinsertsothat lipatbottomof

ottomside ofvalveinsert.Whileholdingcollet

byturningnutattop oftool.Besurethat

eredjust belowinsert.Slidetoolbodyover

hexagonal-headscrewofbodyinline with

t.Turnscrewin toengageslotandlockscrew

utthrust bearingovertopofcolletandon

adonto colletandcontinueto.turnuntil

ylinderhead.


/ h t t p : / / w w w . h





E

veSeatInsert

OPPERTUBES.

3/4-in.

pperendof coppertube(-^4-in.wrench).

d,usingspecialpunch,drivetube outthrough

elAssembly.

FTPILOTBEARING.

ENCH,3/4-in.


/ h t t p : / / w w w . h






C14)

erTubeRemovingToolinstalled

lertool sopullerfingerswillcollapse

rtedthroughinnerraceof bearing.Settool

heel(fig.80) andturnclockwiseoninner

willexpandandbearagainstinner faceof

wrench).Ifnecessary,holdcenterstudfrom

ockwise('%(i-in.wrench),anddrawbearing

INGGEAR.

2-lb

maged,cutitfromflywheelwithchisel.

ntwoof theteeth.Strikechiselsharply

gexpandsenoughto bedrivenfromflywheel.

Housing.

ge

alout ofhousingwithpunchand


/ h t t p : / / w w w . h





E

jectorCopperTube

andBalanceShaftAssemblies.

n.

2-in.

ediatecamshaftbearings(screwdriver).

alvesheld bythesnaprings.Removeself-

h)andpressshaftsfromgears(arbor press).

omshafts(pliers).Sliderearbearingsfrom

ftFrontCoverAssembly.

ge


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(Allis-ChalmersHD-7W);

C14)

GPULLER

tchShortPilotBearing

arCrankshaftOilSeal


/ h t t p : / / w w w . h





E

apRingfromCamshaft

shaftOutofGear


/ h t t p : / / w w w . h






C14)

ckRingfromPiston

odRemovedfromPiston


/ h t t p : / / w w w . h





E

nectingRodBushing

ealoutof frontcoverwithpunch,and

ConnectingRodAssemblies.

steelretainercapatend ofpin.Jar

from connectingrodandpiston.

S.

pistonring

igure114. Caremustbetakennotto

byspreadingthe endsmorethannecessary

USHINGFROMCONNECTINGROD.

andREPLACER,


/ h t t p : / / w w w . h






C14)

ngrodonblockand placeupperendof

inblockand rodinalinement.Drive

rodasshown.

t..

«/Ui-in.

ncrankshaft,ifany(,pliers).Unscrewpilot

mcrankshaft(!li(i-in.wrench).


/ h t t p : / / w w w . h





OFENGINEPARTS

gineparts15

AIROFENGINEPARTS.

cleaningthedisassembledengineand

orSOLVENT,dry-cleaning.Theseproducts

ANER,engine.

ardallcrackedorbrokenparts, worn

sketsfromparts sogasketsurfaceswillbe

mbly.Removeallbursornicks thatwould

ensurfaces.

checktosee ifpartsareso badlyworn

sary.Ifapartis wornalmosttothemaximum

atparttopreventenginefailure afterashort

ntireblockthoroughlywithlivesteam

ressedair.Removeplugsfromends ofoil

l passagesthoroughly,usingcompressed

seplugs immediatelyaftercleaning,'using

ad,to insureagainstleakage.Inspectfor

erblockunfitforfurtheruse.

spectcylinderblockendplates for

surfaces.Bothsurfacesmustbesmooth

ylinderlinersforroundnessandgeneral

tports inliners.Measureeachcylinderliner

otheoneshownin figure87.Checkfor

und (ovalshaped),ortapered(larger

er).Ifthedimensionsare notwithinthe

IV,replacethelinerwith anewone.

sbyslushing inCLEANER,engine,

leantheringgrooveswitha brokenpiston

d.Checkpistonforroundness.Itisallowed

nd.Insertpistonin cylinderliner.Using

earancebetweenpistonandlinercrosswise

007-inchclearanceexists,replacepistonor

ndring groovesforwear.SeesectionXIV.


/ h t t p : / / w w w . h






C14)

ylinderLinersforWear

hingsfor wear.Replaceifbeyondmaximum

yadvisabletoinstall newrings.Newrings

w pistonsareinstalled.Forinstallationof

ectingrod,seeparagraph16 b(2).

s.

kshaftforsignsof scoring,overheating,

Ifthereisany indicationofanyofthese,

outalloilpassagesincrankshaftwithair.

ectingrodjournalsandcrankpinsin several

cetodeterminethesmallestdiameterincase

ornoutof round.

ofthemain bearingandconnectingrod

earingshellshaveathicknessof%.,inchat

hepartingline.Thetwoshells donotforma

ed;andwhenmeasuredfor insidediameter,

theircapsandblock,withcapsbolted

maybe measuredwithmicrometersatthe

,andanyvariationfrom%..,inchwill


/ h t t p : / / w w w . h








C14)

aronthe shellbeingmeasured.Clearance

djournalsis0.002 inchto0.004inchand

ch.Discardanyshellsshowingsignsof

corrosion,oroverheating.Allloadiscarried

ainbearingsandupperhalf oftheconnecting

ysnecessary,therefore,toreplacetheother

maged.

toilsealsin flywheelhousingandfront

einperfectconditionor oilleakswilldevelop.

haftAssemblies.

djournalsfor goodbearingsurfaces

cesofthecamshaftandbalanceshaftthrust

earings;andif eitherisscored,replace

acesaresmooth,theyare satisfactoryfor

he bearingsshowdamageorscoringorbe

dlimitsgiveninsectionXIV,installnew

rfacesforwearorscoring.Replaceshaftif

eandcleanalloilholesandpassages.

oth shaftsandalsotheidler andcrank-

bearingscauseexcessivebacklashandnoisy

removebursongears.Whenassembling

etweengears;andifnotwithin'prescribed

gearhubforscoringandcheckthe

ameterofgearbee.ingalsofor scoring.The

nginthegearandthejournal shouldbefrom

dshould notexceed0.006inch.Ifthe

nch,replaceeitherthegearandbearing

or both,dependinguponwhichpartisworn.

steelwasher,theflangeofthegear hub,

oringand wear.Replacewornparts.End

mblyisfrom0.003inchto 0.006inchand

ch.NOTE:Theidlergearbearingis not

aseofbearingfailure,theentiregearassembly

esandguides.Thevalvesmaybe cleaned

ecessarytoreamcarbonfrom guideswith

newithaspecialvalveguidecleaningtool


/ h t t p : / / w w w . h





OFENGINEPARTS

desuntil gum,carbonorotherforeign

specialcleaningtoolis' notavailable,use

essedair.Checkclearancebetweenvalve

nceexceeds0.005inch,replaceeitherworn

eplacevalveswithbentstems.

ANDVALVESEATRECONDITIONING.The

acedifstemsarenot wornorbentor valve

valverefacinggrinder.If badlygrooved,

efaced,theseatingsurfaceshouldbe ground

eseatsandguides mustbeinstalledinthe

eeparagraph16.

Norepairis possibleonthesetubes.If


/ h t t p : / / w w w . h






C14)

es16

SEMBLIES.

m

m

n.

n.

n.

n.

.

sembliesareassembledandinstalled

yprocessandcannotbeassembledprevious

owingassemblies,however,maybe

embledbeforebeinginstalledontheengine.


/ h t t p : / / w w w . h





AFT.

/1(i-in.

ckretainer.Thisshouldbedone by

lpieceofwirethroughendof wickand

holderand crankshaftafterwickholder

ofcrankshaft.Removethewireand,with

theprotrudingendsofthe wickintothe

tightin eachend.Thencutthewickat

sinchstickingoutfromeach end.

DCONNECTINGRODASSEMBLIES.

gsin ConnectingRod.

andREPLACER,

thejointinbushing towardstopofrod.

86) untilouterendof bushingisflush

Usesame setupaswasusedforr emoving

pproximately;V1Binchwillbeleft between

to sprayjetatupperend ofrod.

gs.

stonpinbushing

onnectingrodis placedonthefixturepre-

e91showstheactualreamingoperation.

arboroffixture(bearingshells removed)

.Sliderear reamerguidebushinginto

withthehollowendfacingtheslot which

doftheconnectingrod.Droptopof rod

boss offixturebed.Installfrontreamerguide

ertreamerinto frontguidebossandturn

otion.Donotcrowdreamertoohard,as

edby moderatepressureswhenturning.

goodbearingfitin thebushings.Thiscan

ardpistonpinavery lightcoatingof

ngitthroughthebushing.Pointof con-

cked.Checkforproperclearance.Seesec-

er capandlockringin eitherendof

rs onthelockringshould bebentinbefore

lockring isinplacetheseears willexert

pin cap,thuspreventingtheleakageofoil


/ h t t p : / / w w w . h






C14)

orReamingPistonPinBushings

onPinBushings


/ h t t p : / / w w w . h





onPin

onPinRetainerCap


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMt(Allis-ChalmersHD-7W)

C14)

R

tBearinginflywheel

erendofconnectingrodbetweenpiston

.Lubricatepin withoilandslidepin into

E:Pinshould slipreadilyintoposition

rrect.Installsecondpiston pinretainer

atexposedendofpin, makingsurelock

atedabovetoholdpincap tight.

LASSEMBLY.

ear.

enlyto450F(red heatvisibleinthe

roomtemperature(70F).Theftplacegear

at, whenflywheelisinstalled,thechamfered

ggearwillfacethe cylinderblock.Drive


/ h t t p : / / w w w . h





E

wofCamshaftandBalance

oulderonflywheel.Letcoolin air.NOTE:

esubjectedtotoomuchheat,as theoriginal

royed.Ontheotherhand, itmustbeheated

ingandmakea tightfitonthe flywheel.

pilotbearing

anOIL,lubricating,engine(crankcase

aringmustbe ontheoutsideawayfrom

squarelyintoboreof flywheelbyhand.

bearing(fig.94)anddrivebearingin

wheel.

TANDBALANCESHAFTASSEMBLIES.

gine,theteethon thecamshaftgearform

on thebalanceshaftformaright-hand

erear.Weightsarebolted totheback?


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(Mis-ChalmersHO-7W)

RC14)

OntoBalanceShaft


/ h t t p : / / w w w . h





swereremoved,besure theyareinstalled

re installedinengine.Thecamshaftand

sfortherear orgearendof shaftsareplain,

d aregrooved.Keepthesenotesinmind

ofigure95forrelativeposition ofparts.

.

ydraulic

bearing(nooilgroovesin bushing)on

dtowardsgear.Gearsgo ontheshaftends

oulders.InstallWoodruffkeysin slotsin

ndpressgear withright-handhelicalteeth

ear withleft-handhelicalteethonthecam-

gearsmustbe awayfrombearings.Slots

upwithkeyson shafts.Screwnutsonshafts

terwhenshaftsareinstalled.

mshaftBearings.

ringsareinhalves.WithOIL,lubricating,

,lubricateandplaceeachbearinginposi-

togroovesinthebearingsto holdthem

YWHEELHOUSING.

movedfromhousing,installthe newone

ardsengine.Itmaybe tappedintoplace

unditwithahammerto driveitinevenly,

ybeused.Thisflatpiece musthavethesame

maydamagethesealretainer.

RANKSHAFTFRONTCOVER.

emannerastheone installedinflywheel

ve).;

CONTROLTUBEASSEMBLY.

ydraulic

tubebrackets.Oneendofcontroltube

bracketonthis endofcontroltubewith

mshaft.Installgroovecontroltubeleveron

yfromshaftandarm pointingtowardthe

theadjustingscrewholes.Installpinthrough

Nextplacespringontube fromopposite

ntrolleversontothettube withpinson


/ h t t p : / / w w w . h





CE—MEDIUMTRACTORMl(Allis-ChalmersHD-7W)

C14)

UBEBRACKET~J

UBE,ASSEMBLY

RW/PIN,ASSEMBLY

HAFTRETURNSPRING

R

RPIN

46

wofInjectorControlTubeAssembly

thebracketalreadyinstalled.Theselevers

freelyontube.Ifnot,inspect forburson

tonotherend ofshaft.

HEADASSEMBLY.

s.

MER,2-lb

rcisedwheninstallingvalve seatinserts.

ve-shrinkfit, andmustbestartedin place

ad.Seethat cylinderheadisperfectly

nterboreforinserts.Immersecylinderhead

temperatureof180to2OOF.Place head

nd layoninsertin counterbore,valveside

rbore.NOTE:Thisoperationmust be

dis hot,andtheinsertmust notbeallowed

tis drivenintoplace.

ubes.

MMER,2-lb

,on 2blocks.Installa newsealring

ertdrive portionofinjectortubedriveand


/ h t t p : / / w w w . h





*£S

veSeatInserts

orInstallingCopperTube


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl'AllisChalmersHD-7W)

C14)

ectorCopperTube

etube intoinjectoropeningincylinderhead

pperendoftube willseatonring andinto

nposition.


/ h t t p : / / w w w . h





ectorCopperTube

Tube.

sprovidedin feetofclampingfixture,

derheadthroughblockstud holes(%-in.

mpmustbeovertop ofdriveportionof

ger(fig.100).Loosenlocknuts onscrew

nagainsttopof driveportionoftoolso

eatedin cylinderheadandagainstseal

sitionwith locknuts.Turnheadonside

ofinjectortube driveandflangerandupset

oreatlowersideof cylinderhead(hammer).

njectorNutand SprayTip.

t)

ninstalledin head,itmustbereamed;

rbodynut andspraytip,andsecond,for

n thelowerendofthe injectornut.With

hereamerdownintothetube,turning it

reamthetubetothe propersizetoreceive

p.


/ h t t p : / / w w w . h






C14)

evelSeatInCopperTube

e.

ULE,6-in.

.

tube.Setfixture oncylinderheadsothat

portionoffixtureis directlyovercenterof

hispositionwitha capscrewintothetapped

acketbolt(3/4-in.wrench).Turnfeed

nly(fig.102).Duringthereamingoperation,

llingan injectorinthetubeand measuring

oulderoninjectortipshouldbejust flushwith

goodseatingwithPRUSSIANBLUEafter

valveguide

sideupand supportitonblocksat each

e incylinderhead.Placecollaronreplacer

dinsert toolinvalveguide.Drivevalve


/ h t t p : / / w w w . h





ocationofInjectorSprayTip

far ascollarontoolallows.This will

y.

mREAMER,rough,valve

medinplaceafter theyareinstalled.Use

ndmakea finishcutwiththefinishing

et)

s isV,.2inch.Neworreusedinserts must

wheelsuchas theoneshowninfigure 106.

amingvalveseatsis ineffectiveonthis

yhardvalveinsert material.Usethe45-

efacingthevalveseatsand the70-degree


/ h t t p : / / w w w . h






C14)

veGuides

atstothe standard^.,-inchwidth.After

ththe grindingwheel,usethedialindicator

atsareconcentricwiththevalveguides.

casionallyhavetobedressedto maintain

the dressingtoolprovidedwiththegrinding

gthe valveseats,putvalvesinplaceand

uceaperfectseatwiththevalvelapper.

m ofPRUSSIANBLUEonseatsand

eattocheckforperfectseating.


/ h t t p : / / w w w . h





dCleaningValveGuides

eSeats


/ h t t p : / / w w w . h






C14)

veSeatsforConcentricity

amFollowerAssemblies.

NCH,deepsocket,

n-

ENCH,open-end,V2-in.

pring seatshavebeenremovedfrom

fromupperend ofpushrodand installover

eat,thecamfollowerspring,andtheupper

rollerguide inpositionandfastenwith

hers(yi(i-in.socketwrench).Dropacam

chpushrodholein cylinderhead,making

nandtheoilholeat thebottomofthecarrt

alves,soit willnotbecoveredbythe cam

removeron pushrodaboveupperspring

rodnut tocompressthespring(Vi-in.

ollowerassemblyandinstalllockwirein

dinsidethe pushrodhole(pliers,screw-


/ h t t p : / / w w w . h






C14)

veandSeat

edwasher(beveledsidedown)overboltin

t.Tightennutfirmly withwrench,using

mblies.

ockerarmsontopushrods.NOTE:The

fromthevalverockerarmsin thatthe

tedwitha hardenedballstudanda ball

d rightvalverockerarms.Thebosson one

erarmis longerononesidethan onthe

boss goestowardstheinjectorrocker

ntopushrodsuntil oneortwothreadsof

visinrockerarm.This isnecessarytopre-

veswhenengineis turnedtoadjustvalves.


/ h t t p : / / w w w . h





lodedViewofRockerArm

bly

cknuts.Lubricaterockerarmshaftwith

rankcasegrade),andslideitthroughrocker

achendof shaft(machinedsideofbracket

stallrockerarmbracketbolts.Tighten

dingthe bracketstogetherwiththehand

clearancemeasuredbetweenoneoutside


/ h t t p : / / w w w . h






C14)

TubeAssembly.

cylinderhead,at thesametimeengaging

versin slotsininjectorcontrolracks.Secure

oVi-x '/8-inchcapscrewswithlockwashers.

tesfreelyi nbearings,

RENCH,open-end,3/4-in.

end,%-in.

n toprowofholesin sideofcylinder

torsfromtopof headinholescorre-

ets(7/1(i-in.wrench).Beveledbottomendof

isterwithtaperedseatsinfuel manifoldinlets.

;theninstallconnectorjamnuts1withnew

wrench).Installrestrictionunitonrear of

enches).Installfuelintakemanifoldinsame

onunitisrequired.Placeshippingcapson

tdirtfromentering.

E.

n.

n.

n,

.,

n.,

TINCYLINDERBLOCK.

socket,ir/,,rin.,


/ h t t p : / / w w w . h





earingShellinMainBearingCap

bottomsideupon enginestand,andall

placeincylinderblockandcrankshaft,

nbearingshells incrankcase.Upperhalves

ked"UPPER"andwill bepositioned

angatpartingline.Flangedinsert goesin

ningisonright sidewhencylinderblock

bricatebearingswithOIL,lubricating,

,andlaycrankshaftinpositionwithflywheel

k.Placelowermainbearingshellsin main

ethesameasupper mainbearingshells.

gstud boltswithtangandbearingcap

eright(blowerside).Attachwithmain

enfirmly (1%6-in.wrench).Rapbearing

rtopositionthemfirmlyafter drawingthe

utsfor tightnessagain.•Securenutswith

ERSINBOREOFCYLINDERBLOCK.

deup.Be surecylinderlinerandshoulder

areclean.Installcylinderlinersin cylinder


/ h t t p : / / w w w . h






C14)

ylinderLinerinBlock

ocylinderbores.NOTE:Thetopof liners

004inch abovecylinderblockface.

NRINGSONPISTON.

ndREPLACER,

whichtheywilloperatetoobtain cor-

ngthemon piston.Useapistonandpush

about2inchesbelowtopof liner,and

gages.Correctcompressionringgapis

l ringgap,0.010inchto0.020 inch.File

toobtainthisgapclearance.Installcom-

pistongrooves.Oilringswithexpanders

h allscraperedgesdownandchamfered

oove(fig.115).Installringswithgaps in

eredaroundthepiston.Usethe specialpiston

toinstallrings onpistons,expandingthem

ss overpiston.Installringsfittedto each

inderidentifiedbythenumberonthe con-


/ h t t p : / / w w w . h





G

0

tonRingGap

ngsonPiston

ONNECTINGRODASSEMBLIES.

WRENCH,socket,"/m-in.,

andle

econnectingrod,as wellasthecaps,

1,2,3.Thesenumbersidentifythe caps


/ h t t p : / / w w w . h






C 14)


/ h t t p : / / w w w . h





onandConnectingRodAssembly


/ h t t p : / / w w w . h






C14)

earingShellinConnectingRod

nderfromwhichtherodwasremoved.The

installedinthe samecylindersfromwhich

deoftherod containinggroovestoposition

hthe numberisstampedgoestowardthe

inewheninstalling.Slidethepistonring

rendofthepiston skirt,with,flaredend

6).Turn thepistonandrodassemblyso

ectingrodaretowardthe blowersideofthe

f pistonwithwoodblockorhandleof

ocylinder.Wipecleanand lubricatecrank-

alwithOIL,lubricating,engine(crankcase

connectingrodbearingshell inconnect-

ked"UPPER"andhasonlyshortgrooves

onrodon crankshaft.Installlowerhalf

oroil fromparting-linetoparting-line)in

ooveofcap.Putcapand shellinplace.

androdandtighten.Useu/16-inchwrench

ennuts.Securenuts withcotterpins(pliers).


/ h t t p : / / w w w . h





DERBLOCKENDPLATE.

H,3/4-in.

kettocylinderblockwithVARNISH,

deofgasket.Placefrontendplatein posi-

block.Insertthegroovedcamshaftand

sthroughplateandinto block.NOTE:The

eshaftendbearingsaregroovedwhilethe

achbearingto blockwiththree3/s-x1 Vi-inch

ers.Theninstallsix3/a-x 1-inch(%(i-in.

nchcapscrews(%-in.wrench)withlock

ndplateand block.

ERBLOCKENDPLATE.

endof cylinderblock.Thenshellacout-

atein positionondowelswithholefor

rdblowerside.Lubricatebearingsandinsert

ftassemblies(usecarenottodamagecams)

nblock(camshafttoblowerside) toaline

inend platewithboresin'blockbefore

dplate.Theninstall six%-x1-inchcap

nmidsectionofendplateand block.Install

veandtwobelowthehole foridlergear

obelowthe holeforthedummyhub

SSEMBLY.

ENCH,socket,9/i(i-in.,

asinsertedintotheborein blockinpre-

ethree%- xIV^-inchcapscrewswith

rearend bearingtoblock.Thesecanbe

holein camshaftgear.Tightenthemfirmly.

tebearingsuntillockingholesinbearings

ylinderblock,andinstallthelockingscrews.

AFTASSEMBLY.

with6-in.extension

camshaftandbalanceshaftgearsjust

ry,pullbalanceshaftandgear partlyout

earsso thatthe"O"onthe camshaftgear

eshaftgeararetogetherwhenbalanceshaft

camshaftgear(fig.118). Securerearbalance

plateandblockwiththree%-x IVi-inchcap


/ h t t p : / / w w w . h






C14)

ngTimingMarksonGears

EIGHTS.

2-in.

tsinfront endofcamshaftandbalance

sonshaft.Placefoldedclothbetweencam-

ars;installandtighten nutsonbothendsof

arancebetweenendbearingsandbalance

xceed0.012inch.Ifmorethan that,install


/ h t t p : / / w w w . h





nkshaftGearandOilSlinger

FTGEARANDOILSLINGERONCRANKSHAFT.

with6-in.extension

ngeatrear endofcrankshaft.Lineup

drilledso gearcanbeinstalledonlyin the

lingerinpositionagainstgear. Boltgear

x3/s-xIV8-inchcapscrewswith"lock

ASSEMBLYANDDUMMYHUB.

ket,3/4-in.

vecamshaftandbalanceshaftgearsuntil

her.Turn crankshaftwithsmallbarand

nkshaftuntilthe "R"oncrankshaftgear,

amountofGREASE,generalpurpose

ceoftheidler gearspacerandsetit against

ithholeinline withoilhole.Greaseisto

ub andgearareinstalled.Setidler gear

"ontoothof onegearopposite"R"between

n turncrankshaftandgeartoTollidler

eshaftgearso other"R"onidlergearl ines


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(Mis-ChalmersHD-7W)

C14)

ingRelativePositionofPartsin

ftgear (fig.118).Lubricatebearingsurfaces

ne(crankcasegrade),andslideidlergear

rgear sothathollowpinon hubentersholein

ate. Lockhubinplacewithl/2-x 2-inch

ers.Pushcylinderlinersbackdownifthey

turned.Installdummyhubsimilarto the

ppositesideof endplatewithaVa-x 2-inch

er.

HOUSING.

-in.


/ h t t p : / / w w w . h





rcylinderblockendplate,idler gearhub,

eelhousingoilseal expanderonpinsinend

eelhousingsquarelytowardscylinderblock

overexpander(usecarenottodamageseal)

epins incylinderblock((A),fig.122).

dplate andinstallcapscrewsandboltsas

hcoarsethreadcapscrewswithlock

ock,3on eachsideofcrankcaseinside

nchcoarsethreadcapscrewswithlock

hub ("/ju-in.wrench).

inchcoarsethreadcapscrewswithlock

ub(9/i(i-in.wrench).

hcoarsethreadcapscrewswithlock

omthefrontof rearendplateintofly-

hole oneachsideofblock(%(i-in.wrench).

-inchfinethreadcapscrewswithlock

4V2-inchboltwithlockwasher(G)attop

olt goesinholeonleft side)(%6-in.

hfinethreadboltwithlockwasher(H)

g(^1(i-in.wrench).

inchfinethreadboltswithlockwashers

tside ofhousingandendplate.Thesebolts

pportlateron (%(i-in.wrench).

oinstallone %-x4V2-inchfinethread

lowerholeinleftside ofhousingand

overtoblowerdriveassemblyuntil

installed.

ASSEMBLY.

l3/16-in.,

erpinsprojectingfromrear flywheel

dthatflywheelcannotbeinstalledin wrong

cialcapscrews.Tightenfirmly(':y1(i-in.

ethroughcapscrewheads(pliers).

EIGHTCOVER.


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl<Jllis ChalmersHD-7W;

C14)

arCrankshaftOilSealExpander

alanceweightcover.Placecoverin

ws:

chcoarsethreadcapscrewswithlock

wer centerhole.

chfinethreadcapscrewwithlockwasher

chfinethreadcapscrewswithlockwashers

er.

chcoarsethreadcapscrewswithlock

cover.

nchfinethreadcapscrewswithlock

sincover.

IVESPROCKETONCRANKSHAFT.

ot infrontendof crankshaft.Place

ve sprocket,usingsofthammer,tapsprocket

tandonkey.NOTE:Chamferededgeof

owardfront ofenginewheninstalledon


/ h t t p : / / w w w . h





BoltsinFlywheelHousing

FTFRONTCOVERASSEMBLY.

H,3/4-in.

rankshaftandagainstoilpumpdrive

gawayfromengine.Placefrontcoverover

inderblockendplateandsecuretoblock

oarsethreadcapscrewswithlockwashers

h)andthree%- x%-inchfinethreadcap


/ h t t p : / / w w w . h





E—MEDIUMTRACTORM1<Hills-ChalmersHD-7W)

C14)

lPumpDriveSprocketandChain

nupperpart.Slip spacerovershaftand

stfront oilslinger.

EAD.

with6-in.extension

aterialfromtopofcylinderblockand

ewcorkoilsealinggasketsto cylinderhead.

asket(gasketsurfacenexttoheadis marked

dopeningsforcombustionchambergoes

enoVARNISH,shellac,orgasketcement

utcoatuppersurfaceofcorkgasketwith

etcement.Installlifterbracketsoneach

utdonot tightencapscrews.Setheadin

cketsandinstallcylinderheadstudnuts.

enly,beginningatcenter'of headand

ERBRACKETS.

undbottomand insideoflifterbrackets.

nderheadandhousingswith four"i(i-x


/ h t t p : / / w w w . h





screwswithlockwashers.Drawall4cap

willbetightagainst bothheadandhousing.

askets.

UELLINES.

n.

mfittings.Placeconnector"nutsateach

htenalllines,andconnectfuelmanifolds


/ h t t p : / / w w w . h






C14)

SORIESONENGINE

onengine19

ent22

re,accessoriesareassumedtobeassem-

eywerewhenremoved.Insomecasestwoor

ledasoneunit. TM9-1783Boutlinesinstallation

sorywithengineintractor,asin someinstances

equiredwhenengineisalreadyin thetractor.

CESSORIESONENGINE.

in.

n.

n.

in.

n.

.

n.

.

EMBLY.

etShaftAssembly.

pon stand.Maneuveroilpumpsprocket

ketintopositionon No.1mainbearingcap.


/ h t t p : / / w w w . h





SORIESONENGINE

ilPumpSprocketShaft4ssemhly

WRENCH,socket,%B-in.

on thetwostudsonNo. 2mainbearing

rivesleeveover thesplinesonoil pumpdrive

inesonoilpumpsprocketshaftas pumpis

sprocketandshaftassemblyinpositionon

all thetwo%-x1-inchcapscrewswith lock

nstallthetwo%-inchstudnutsand lock


/ h t t p : / / w w w . h






C14)

BypassValveAssembly

ilpump toNo.2mainbearingcap (^-in.

/4-inchcapscrewandlockwasherholding oil

etbracketonNo.3main bearingcap(V2-in.

ckshouldbe allowedinoilpumpdrive

rivechainmaybe takenupbyinstallingan

defromshimstockbetweensprocketshaft

nletsupportbracketandthebearingcapsto

fslackisexcessive,however,anewchain

sembly.

mblygaskettocylinderblockandinstallthe

ngr,'](i-x1-inchcapscrewand lockwashers

pscrewholdingbypassvalveassemblyto

pumpoutletpipegasketstobypassvalve

o%$•x %-inchcapscrewsandlockwashers

ssvalveassembly.


/ h t t p : / / w w w . h





SORIESONENGINE

lpanand cylinderblock.Shellactheoil

kandinstallthe oilpanusing22 %6~x1-inch

ersholdingoilpanto cylinderblock(fig.41).

VE.

.

upportgaskettorear cylinderblockend

veassemblyinto positiononrearcylinder

8-x l3/16-inchcapscrewswithlockwashers

ndplate.

VEBEARINGOILPIPE.

ringoil pipeassemblybyconnectingto

dblowerdrive.

E.

6-in.WRENCH,open-end,3/4-in.

r throughcliponoilfiller tubeandcon-

block(fig.40).

FUELRETURNMANIFOLD.

H,open-end,%-in.

offuelreturnmanifoldbelowrestriction

uelreturn linetoboltholding blowerdrive

ch).

FOLDANDTHERMOSTATHOUSING.

n.

skettocylinderhead.Installwateroutlet

nderheadandsecurewith six%-inchstud

39).

ANDLUBRICATINGOILFILTERASSEMBLY.

.

daptergasketsto cylinderblockandin-

andcooleradapterwithfour3/s-x 1%-inch,

ne %-x1%-inchcapscrewswithlockwashers

andcooleradapterto cylinderblock

gand Element.

tgaskettooilcoolerelementand shellac

ooil coolerhousing,coatingbothsidesof

mentinsideofhousingandinstall housingto


/ h t t p : / / w w w . h






C14)

%-inchcapscrewsandlockwashers

SSTUBEASSEMBLY.

WRENCH,socket,%6-in.

lowergaskettooil cooleranduppergasket

tallassemblywith%6-x1-inchcap screws

tubetothermostathousingandtwo %6-x

ckwashersholdingtubetooil cooler(Vi-in.

nchcapscrewholdingtube cliptofront

%6-in.wrench)(fig.38).

PULLEY.

n keywaysinfrontendofcrankshaftand

e pulleyhubwithkeysinshaft andinstall

frontendofcrankshaft.Installwasherand

apscrewholdingfandrive pulleyonfront

SEMBLY(WITHFUELPUMP,WATERPUMP,

THOUSINGATTACHED).

NCH,s/8-in.

Hsocket,s/8-in.

ylinderblock.Placewaterpumpoutlet

pumpoutletpackingonwaterpumpoutlet

mpNeoprenesealand hoseclamponwater

assemblyin position,slidingblowerdrive

arsupportassembly,takingcarethatinlet and

amaged.Installthe four7/16-x2-inchcap

oldingblowertocylinderblock(%-in.wrench)

pscrewsandlockwashersholding water

etocylinderblock(V2-in.wrench).Tighten

umpNeopreneinletseal (screwdriver)

IVESHAFT.

ongestsplinedendfirst, rotatingtheblower

drivehubandalsosplines onotherend

owerdrive gear.Installblowershaftlock

lowergear(figs.31and32).

HOUSINGSTARCOVER.


/ h t t p : / / w w w . h





SORIESONENGINE

tarcovergaskettoflywheelhousing,and

3/s- x5-inchbolts,nuts,andlockwashersand

wswithlockwashersholdingstar coverand

assemblytoflywheelhousing.

EFUELFILTER.

n.WRENCH,open-end,%-in.

.

torightsideof cylinderheadwithtwo

dlockwashers(%6-in.wrench).Connectfuel

ird stagefuelfilter(fig.30).

CONTROLHOUSING.

blyinplace.Enterforkinto weighthousing

mrearof governorweighthousing.Usenew

vernorweighthousingand betweentopof

d.Besurefrontthrustwasheris between

eninstallingthis unit.Installthefour1A-x

ngbottomofgovernorcontrolhousingand

overandthetwoVa-x %-inchcapscrewsat

usingtocylinderhead.If governorweight

dfromtheblowerwhiletheseassemblieswere

crewsholdingittothe blowermustbeloosened

ontrolhousingtoassureproperalinement.

ernorweightandgovernorcontrolhousings

CONTROLLINK.

in cylinderheadandslipoverdifferential

olassembly.Lockinplacewithwasherand

ey throughcontroltubeassemblyleverand

8).

OUSINGCOVERASSEMBLY.

sitioncoversopinin governorshutoff

otindifferentiallever.Attachcoverwithfour

apscrewswith lockwashers.Attachthrottle

edoperatingleverwith cotterpinandkey.

spring(fig.27).

OUSINGANDINLETELBOW.

g.


/ h t t p : / / w w w . h






C14)

nchcapscrewsandlockwashersthrough

nstallthehousinggasketandscreenover

tall airinlethousingontoblowerand tighten

od.

pin connectingfrontfuelshutoffcontrol

rnor.

NTSUPPORT.

n.

nchcapscrewswithlockwashersholding

anceweightcover(fig.26).

INTUBEANDELBOW.

n.WRENCH,open-end,3/4-in.

n.

bowincylinderblockbelowthecenter

draintubetoelbow(34-and%-in.wrenches),

hcapscrewandlockwasherholdingdrain

%6-in.wrench).

OTOR.

ENCH,socket,%-in,

sion

wheelhousingusing two5/a-xIVfe-inch

ersandone%-x 2Vi-inchbolt,nut,andlock

RANDBRACKET.

ncylinderblockwiththreey16-x IVi-inch

ers.

Hsocket,s/8-in.

nin bracketandsecuretobracketwithtwo

withlockwashersoneat eachendofgen-

stalla%6-x%-inchcapscrewwith lock

rbeltadjustinglinkandinto generator.Adjust

bedepressedfrom3/4-inchto 1-inchand

wrench)(fig.24).


/ h t t p : / / w w w . h





SORIESONENGINE

ANIFOLDANDMUFFLER.

ocket,s/8-in.

dwithchainhoistandrope.Supportengine

haustmanifoldgasketsonstudsin cylinder

equired),andinstallexhaustmanifoldand

hstudnuts andspecialwashers(s/8-in.wrench).

(fig.23).

.

derblockrearhandholecover,shellacair

f burnerunitandinstallair heaterinrear

pscrew,lockwasher,andcoppergasket

HEATERINLETELBOW.

wandinstall enginepreheaterinletelbow

e%-x 1-inchcapscrewandlockwasher

rtocylinderblock(fig.21).

127).

reprecisionpartsonwhichnoservice

exceptbycompetentmechanicsandinabso-

Forinstructionsoninspecting,cleaning,and

M9-1783B.

operlylocatingthe topoftheinjector

tothe injectorbodywhenitisat thetop

s 1.484inchandaspecialtool calleda

128), includedintheinjectorservicekit,is

justment.Theinjectorsmustalwaysbe

theengineis operated.Thefollowingpro-

me theinjectors.

pen-end,5/16-in.

NCH,open-end,V2-in.

nd,or, ifteststandis notavailable,in-

XI).

FF"Position.

start.Crankenginewithstartingmotor

the cylinderonwhichtheinjectoristo be


/ h t t p : / / w w w . h






C14)

ngGage

ng

entherockerarmshavedepressedthe ex-

maybetimed.

sition(fig.126).

VER,small

e timingholeintheinjectorbody.The

uldbe turnedtotheleftas faraspossible.

a firmdownwardpressurewithasmall


/ h t t p : / / w w w . h





SORIESONENGINE

eslotinthe topofthetiminggage shaft.

lderatthe lowerendofthetiming gage

njectorbody andisnotresting onthecopper

tting intheinjector.

fig.128).

totheright untilthelowershoulderofthe

eedgeof thefollowerguide.Ifthetop ofthe

t flushandthemarks"C"onthe sleeveand

shrodmust belengthenedorshortened

ment.

6-in.WRENCH,open-end,V2-in.

pushrod.Adjusttherockerarmby turn-

tto shortenit,whichwillallowtheinjector

p.Turningthepush rodtotheleft will

willpushtheplungerfollowerguidedown.

eup, withasmallallowanceforaslight

nthelocknutistightened,thesleeveshould

ofthetiming shaft.Tightenthelocknuton

marksshouldnowbeexactlyinline.If they

eadjustmentslightlyuntilthemarksline up

.

ofproperlyadjustingall injectorcontrol

el injectionfromeachinjector.Accurate

ssentialbeforetheyareequalized.Theinjec-

ualizedeverytimeanypartofthe engineis

ectthepositionofthe injectororrockerarm

complishedbythefollowingprocedure:

nd,or, ifteststandis notavailable,in-

XI).

ard(Open).

ayforwardandpullthrottleback(open)

ws.


/ h t t p : / / w w w . h






C14)

ngof/n/ector

sontherackcontrolleversand besure

controltubeandthatthe controltuberotates

ontrolLink.

ernorcontrollinl:andcontroltube lever.

oulr1movefreelyandtheinjector control

rntothe "noinjection"positioninjectorrack

ntrollinkis disconnected.


/ h t t p : / / w w w . h





SORIESONENGINE

RackAdjustment

orControlRackandGear


/ h t t p : / / w w w . h






C14)

andGearClearance(fig.130).

thetopofthegovernorin fullloadposi-

ustingscrewforNo.1injectorin untilthe

roltubeleveris %$inchoutofline with

ontrollink(fig.129).Turntheupper adjust-

nbothscrewslightly sothatthe%4-inch

ControlLevers.

eragainstNo. 1injectorcontrolrackin

theremainingrackcontrolleversuntilthe

rs justcontacttheinnerfacesofthe slots

s.CAUTION:Theadjustingscrewswillbe

tly.Ifthey arejustscreweddownfirmly,they

trolLink.

rcontrollinkandcontroltubelever,and

allrockerarmcover,startengine,and test

JUSTMENT.

learanceisimportantbecauseofhigh

velopedinaDieselengine.Toolittleclearance

on,"missing",andeventualburningofthe

omuchclearanceresultsinnoisyengine

veclearanceis0.010inchatoperatingtem-

nceisadjustedbyturningthepush rodin

chchangesthelengthofthe rod.Turnthe

easevalveclearance(lengthenrod)andto

e(shortenrod).Thefollowingprocedure

hevalveclearancecorrectly.

pen-end,V2-'m.

-in.

ctorIs atBottomofStroke.

startingmotor untiltheinjectorplunger

rockerarmdown).

eenRockerArmandValveStem.

pen-end,V2-in.

n.


/ h t t p : / / w w w . h





SORIESONENGINE

anceAdjustment

ageandadjusteachpush roduntilthe

nthe valvestemandtherockerarm.

6-in.WRENCH,open-end,V2-in.

locknut.Checkagaintoseeif 0.010-

ertedbetweenthevalve stemandrocker

e feltonfeelergage.

eachcylinder.


/ h t t p : / / w w w . h






C14)

NTRACTOR

ctor24

backintotractor,washdirtand grease

dmasterclutchcompartment.Atthesame

pportassembly,enginespacerandmaster

assembliescontainedinthem,andifany

nthem,doit beforeengineisinstalled.Check

supportboltsto seethattheyaretight and

oltsholdingwinchassemblytoenginesupport

pairorreplaceanydamagedwiresor fuellines.

GINEINTRACTOR.

(2)

ENCH,%-in.(2)

5/16-in.

,enginecranking

d5/16-in.

NCH,open-end,Vz-in.

NCH,open-end,%6-in.

H,open-end,n/16-in.

H,open-end,3/4-in.

H,open-end,Va-in.

H,socket,V2-in.

CH,socket,9/16-in.

Hsocket,3/4-in.

TCHONCLUTCHSHAFT.

mblyonclutchshaft,takingcaretosee

tyokefitinplaceonsliding blocksonrelease

ocksare placedonthereleaseyokesothat

ring.Next,installdrivenplate assemblyon


/ h t t p : / / w w w . h





NTRACTOR

on drivenplateassemblytowardfrontof

OSITION.

ocket,%6-in.

lowerengineevenlyonto frontengine

ck,makingsurethatend ofclutchshaft

wheel.Then,installtheten %-xIVi-inch

ersholdingenginetospacerassembly(%6-in.

OLTSUNDERFRONTENGINESUPPORT.

-in.

y bar.Placeshimsthatwereoriginally

frontenginesupportin ordernottoalter

allthetwos/8-x 2-inchboltswithlock

pportbrackettoenginehanger(fig.18).

BREATHERPIPE.

therpipe.Slidelowerend ofbreather

tooil cooler.Boltupperendtogovernor

/8-inchfillister-headcapscrewswithlock

SEMBLYTOFLYWHEEL.

gWRENCH,socket,9/16-in.

utchinspectioncoverholesintransmis-

asterclutchassemblyagainstflywheel,lining

ackplate withholesinflywheel,andinstall

pscrewswithlockwashersholding master

wrench).NOTE:Theenginecrankshaftwill

ginecrankingwrenchwhileinstallingthese

UTCHCONTROLROD.

n.

otterpinholdingmasterclutchcontrol

eoftransmissioncase.Adjustmasterclutch

edinparagraph8. Insertclutchrelease

roughholeintransmissioncaseand install

ench).


/ h t t p : / / w w w . h






C14)

hAdjustingLock

STMENT.

n.

)

gPosition.

olvetheclutchuntiltheadjustinglockis

nhole.

ock.

outofslot inbackplate.

ngringtoturn ring.Totightenclutch,

se;toloosenit,turn theringcounterclock-

directionanotchatatime andtestpull

oengageclutch.Pullshould be50to55

ng,or 60to65pounds whenengineis

dengagewithasnapand levershouldlock

enteraction.


/ h t t p : / / w w w . h





NTRACTOR

otchinbackplate.

TMENT.

nd,9/1(i-in.

NCH,socket,%-in.

eadofl ockscrewandaroundtheclutch

-in.WRENCH,socket,%-in.

nboltsthatclampthetwohalvesofclutch

adonshaftuntilspacebetweenclutch

akemeasuresIi/Kiinchto1 V8inch.

re.

3/4-in.

-m-

keassemblytoshaft.Thentightenlock

throughheadof lockscrewandaround

TCHINSPECTIONHOLECOVERS.

rmasterclutchinspectionhole.Install

crewsand lockwashers.Placefloorplate

randinstallthefour Vi-x1-inchcapscrews.

NGOILPRESSUREGAGELINE.

.WRENCH,open-end,7/8-in.

goilpressuregagelinetofitting incylinder

15).

S.

n.WRENCH,open-end,V8-in.(2)

el pump.Installandconnectoutletfuel

couplingonsecondstagefuelfilter.Install

eattop ofsecondstagefuelfilterto third

deofengine.Connectthereturnfuelline to

eofcowl.Connectfueloil pressuregage

elfilter.


/ h t t p : / / w w w . h





E—MEDIUMTRACTORMl(Allis-ChalrnersHD-7W)

C14)

AIRSHUTOFFROD.

ffrodat longshutoffleveratrearof

otterpin.

CONTROLROD.

ktoairshuttershaft leverrodbyinstalling

nectingtherod totheairshutter shaft

cranktogovernorrodbyinstalling yoke

ngtherod tothegovernor(fig.17).

HOSE.

wontoairinlet tubeandtightenhose

GAGELINE.

Hopen-end,u/16-in.

dercapscrew,holdingrear enginefilter

ne.Insert thetubeinthe fittinginwater

ubenut(fig. 16).

COVER.

H,Vi-in.

H,open-end,%6-in.(2)

etocoil (3/8-in.wrench)andinstallair

x2%-inchcapscrewswithlockwashers

heairheaterfuelcheckvalvecliptoair

rcapscrew.Connectairheaterfuelline to

renches).Attachcliponfuel linetolower

ockendplateandinstall3/8-inchnutand

n.wrench).

WIREANDSTARTERCABLE.

,3/4-in.

dbatterycabletostartingmotorswitch

startingmotortobatteryterminal.

WIRETOGENERATORREGULATOR.

eratorregulatorontopof generator.

MOTOR.

onstartingmotorswitchleverandinstall


/ h t t p : / / w w w . h





NTRACTOR

SSEMBLYINTOPLACE.

adiatorassemblyinto position,atthe

rshuttercontrolrodinto placethroughleft

ase(fig.14).

BLY.

chside)s/a-xIVi-inchcapscrewswith

ontcornerof radiatorshell,butdonot

Tiltradiatorforwardasfar aspossible,place

n assemblyintoposition.Installthree

swithlockwasherssecuringfanassembly

ndtiltradiatorbackinto anuprightposition

ESHAFTBRACKET.

acketoverwinchdriveshaft,andinstall

rewsholdingwinchbrackettoradiatorshell

e support.

RODANDLIGHTWIRES.

-x IV2-inchcapscrewsonrightside

rshellto enginesupport(%-in.wrench)

tor shuttercontrolrodtoshutterlever

(pliers).Connectthetwoheadlightblack-

ketsunderneathgenerator.Tightenallcap

rench).

OUTLETHOSES.

NCH,socket,V2-in.

crewsholdingradiatoroutlet hoseatlower

atorconnection(screwdriver).Shellacgasket

andinstallthetwo%6" x1-inchcapscrews

owerwaterconnectiontooilcooler(Vi-in.

rinletradiatorconnectionandwatermani-

ampconnections(screwdriver).NOTE:

ectionmaybeinstalledbestthroughopening

over.

PORTBOTTOMCOVER.

edrainplugis tight.Installcoverwith

ewswithlockwashersholdingenginesup-

esupport(fig.11).


/ h t t p : / / w w w . h






C14)

DERS.

chboltswithlockwashersandtwol/2-x

ckwashersholdingleftfrontfender;and

ockwasherandthreel/2-x 1-inchcap

holdingrightfrontfender.NOTE:Thetop

fendertorearfenderalsoholds thestarting

(fig.9).

ESHAFTGUARD.

NCH,3/4-in.(2)

-inchcapscrewswithlockwashersholding

ket(%(i-in.wrench),two3/a-xIVi-inchbolts

guardtoleft rearfender(two%(i-in-

i/4-inchboltwithlockwasheron toprear

(fig.8).

SS.

rloosebolts ornuts.Checkallwires,fuel

e theyareconnectedandtight.Fastenthe

ontothebatterypost.

FUELFILTERS.

atorwithcleanwateror,if itisbelow

olution.Removepipeplugfromsideof

fillingradiatoruntilwaterruns outofholes.

ngradiator.Fill secondandthirdstage

ASE.

ULL"markonoillevelbayonetgage

ne(seasonalgrade)(11qt).

S.

ENCH,open-end,V2-in.

0-in.

datthis time.Removerockerarmcover,

dfollowprocedureoutlinedinparagraph21.

kandstart engine.Afterenginestarts,

erconnectionsandfueland lubricatingoil

elandlubricatingoil pressuregagestosee

ecorrectpressures.Install rockerarmcover


/ h t t p : / / w w w . h





NTRACTOR

EANDHOOD.

ENCH,9/16-in.

pipeandprecleanerextensionelbowinto

orshell.Tightenthe 4hold-downboltsat

n.wrench).NOTE:Theboltholdingthe

ocatedinsidethebatterybox(fig.7). Install

wandtighten clampbolts(y1B-in.wrench).

RRUN-INPERIOD.

mpletelyoverhauled,startengineand

efollowingrun-inschedule:

noload

hlightload,2nd gear

ightload,4th gear

tingoil pressure,fuelpressure,and

ormalrangeduringtheaboverun-inperiod.

eencompletelyoverhauledorifclose

erliners,pistons,and bearingshavenot

eriodmaybe reduced.Thereductionof

stentwiththe natureoftherepairand

etionoftheofficerincharge.


/ h t t p : / / w w w . h






C14)

IPMENT

eand itsaccessoriesrequirestheuseofthe

dcanbeaccomplishedfasterandinamore

toolspecifiedineachoperationis used.The

graph26are thoseoftheKent-MooreOrgani-

lding,Detroit,Michigan.

ngexpanderJ-1471

682-C

etJ-1698

amerandfixtureJ-1686

onremoverJ-1687

MO-913

replacerJ-1918

eJ-1319-A

05

etof2)J-1904

erJ-1914

xpander...J-1359

acerJ-1910

26-A

utwrenchJ-1652

gerJ-1229


/ h t t p : / / w w w . h





IPMENT

231-A

hpoppingtoolJ-1261-A

ndspraytipremoverJ-1291-A

kJ-1330

-1891

KMO-240

472

O-231

placerKMO-232

randreplacersetJ-1513

J-1244

1922

41-A

finishing)341

roughing)J-129-2

ndinjectorremovertoolJ-1227

122

41

-167-D


/ h t t p : / / w w w . h






C14)

T

ndstorage27

PMENTANDSTORAGE.

estoredor shipped,specialprecautions

t againstrustaccumulation,corrosionofthe

mmingofthefuelsystem.

torageor shipmentasfollows:

t800to1,200revolutionsper minute

tes.Shutdownengine.

llines, fuelniters,fuelpumpand

inetofuel pumpandremoveinjectors

tofill theinjectorswithOIL,lubricating,

hileturningtheengineoverwiththestarting

ewideopen,allowOIL,lubricating,pre-

uckedintothefuelpumpuntil thelinesto

Atthesametime,sprayapproximately

eservative,medium,intotheair intake.

edfor30-secondintervalsonlywith 2-

than 30secondsarerequiredtoaccomplish

hiswillavoiddamagetostartingmotor

p,filters,andinjectors.Installinjectors.

lpump.Attachmanilatag,whichreads

IL,U.S.ARMYSPEC.2-102,LATEST

tem.Attachredtag tocrankcaseoilfill

GINEHASBEENPREPAREDFOR

,ENGINE,U.S.ARMYSPEC.2-104,

PERATION."

verandthoroughlycleaninteriorofcover,

dcontrolrack.SpraywithOIL,lubricating,

hilethecrankshaftisbeingrotated,sothatthe

rarmassemblies,controlrack,andthepro-


/ h t t p : / / w w w . h





T

ems willbecoatedthoroughly.Spraythe

place.

ooled,removegreaseanddirtfromthe

pply alightfilmof COMPOUND,rust-

osedthreadedsurfaces,usingabrush,and

bberparts. Sealengineaircleaners,,breathers,

onjoints,andopeningsofallelectricalunits

orestorage,removerustappearingonanypart

ndpaintor lightlycoatthemetalwith

ve,light.

k.If anengineistobe shippedby

firstbeplacedonand fastenedtoasuitable

heengineshould restontheflywheelhousing,

nger.A circularnotchshouldbecutinthe

o distributetheweightaroundthebottom

eoilfiller pipeandoilgage tubeshouldbe

ne.Theblowerair inlethousing,mufflerand

movedandwiredtothe skidfloortoprevent

aseengine shouldbeupset.Allopeningsin

,etc.,shouldbecoveredwithself-sealingtape

rt ormoisture.Theengineshouldthenbe

ofskidswithboltsandreinforcingsteel strap

containingenginehasbeenplacedonfloor

esandendofskid shouldbetoe-nailedto

achend ofskidtopreventskidfrom sliding

remade.Ifcaror truckisopenattop,the

withwater-proofedpaper.

neis tobeshippedbyboat,it must

Floorofcrateshouldbeof materialIVfeinch

x4-inchskids.Thecrossmembersat

owflywheelhousingshouldhavecircular

theflywheelhousing.Theyshouldbesecurely

earcornerpostsofcrate.Blocksshouldbe cut

andfrontenginehangerandwedge-shaped

hendofoil pan.Removesameaccessoriesand

a,above.Alsoplacewater-proofedpaper

envelopeisformed.Then,coverenginewith

nailsidesandtopsof cratetoskid.Nailrein-

crate.


/ h t t p : / / w w w . h






C14)

edbelowcoverall partsoftheengine

ablewornclearancesaretabulatedaswell

ngines.Whenrebuildingan engine,usethe

nsionsasaguideanduse thewornclearances

tisusableor shouldbereplaced.Fitsand

essoriesmaybefoundinTM9-1783B.

rBlock.

4.6265in.

—4.2492in.

1in.

e-.Loose(0.000in.—0.002in.)

0.003in.

g

ALS.

0in.

03in.

URNALS.

0in.

nals,notover0.0005in.

03in.

4

.—3.503in.


/ h t t p : / / w w w . h





n.—0.004in.

n.

ngs4

498in.—1.4985in.

.500in.

.501in.

hshaft0.0015in.—0.003in.

n.

rancewithshaft0.0025in.—0.004in.

n.

0.012in.

n.

ngs.

498in.—1.4985in.

.—1.501in.

in.—0.003in.

n.

0.012in.

n.

0.126in.—10.124in.

01in.—1.7500in.

5020in.—1.5015in.

d3.0630in.—3.0625in.

7530in.—2.7520in.

4in.

n.'

0.012in.

7in.—0.006in.

n.

0.007in.—0.006in.

n.

1in.


/ h t t p : / / w w w . h






C14)

.02Ib

bushing1.688in.—1.6875in.

.

—1.5022in.

r1.5000in.—1.4998in.

3in.—0.0024in.

n.

.

35in.

8in.

in.

n.

in.

n.

—0.0085in.

n.

5in.

4in.—0.008in.

nism.

ylinderhead

2

andguide0.001in.—0.003in.

n.

—0.3415in.

1%(iin.


/ h t t p : / / w w w . h





0in.

23/i(i in.

144.5Ibat 15%4ih.

AFT.

—0.0025in.

6in.

BORE.

03in.

n.

22%4 in.

o144.5Ibat 2%4'in.

ER.

nt0.0005in.—0.0016in.

n.

5in.

n.

.7490in.—2.7495in.

2.746in.

bushingtohub0.0025in.—0.0035in.

n.

earandhub0.003in.—0.006in.

n.


/ h t t p : / / w w w . h






C14)

R.

R.

shing0.003in.—0.006in.

n.

hub0.001in.—0.002in.

15in.

n.


/ h t t p : / / w w w . h





sts.............................31

...............................32

LATURELISTS.

ndlubricatingmaterials;re-

miscellaneousrelated

....................SNLG-125

clatureListsareastabulated

NL'sis maintained

ionsforSupplyIndex"OPSI

ATIONS.

ediumtractorMl(Allis-

............TM9-783B

..................AR850-15

..'...........FM25-10


accessories.........TM9-1783B


ent..............TM9-1783D


rain,frameassembly

1783C

bricating,andweldingma-

uedby theOrdnance

.........TM9-850

..............TF9-159

..................TM10-575

..................FS10-37

ctor................TF9-171

ctractor............TF9-172

Dieseltractractor......TF9-169


/ h t t p : / / w w w . h






C14)

el tractractorTF9-170

systemoftheDiesel

ance.

nanceTM10-525

nceFS10-53

ecautions,accidentsTM10-360

esFS10-58

nsTM10-545

nanceFS10-54

rstechelonmaintenanceTF11-558

10-580

M1-455

ingFM21-6

ngineTM10-570

gofmechanizedand

nt,also,majorcaliber

Armyand Navy,on

blishedbyOperations

mentofAssociationof

quipmentAR850-18


/ h t t p : / / w w w . h





143

5

ow

mainte-

mbly,

ons,main-

elbow

39

ogenerator

cable,

s..114-129

21

-126

7

ger123

128-129

ate.121

as-

te.121

ftas-

102-114 P u b l i c D o m a i n , G o o g l e - d i g i t i z e d

/ h t t p : / / w w w . h






RC14)

ter

ht

ilpipe,

toler-

34

ationsof

omfront

emove..54—55

mainte-

sandtol-

dtoler-

aftassem-

tsandtol-

erances..159

derliners.20

engine

rteeth..98

0-91

helons..13

147

ver,remove33

re-

oor.... 23-24

dtoler- P u b l i c D o m a i n , G o o g l e - d i g i t i z e d

/ h t t p : / / w w w . h








C14)

od,remove

y,mainte-

ow,install137

helons..17

ver

helons..17

144

embly,

helons..17

9-142,150

smoke

fleras-

helons..15

ance15

1-22

kage.20

mblies,

intenance16

ntenance16

nance....15


/ h t t p : / / w w w . h





sone

e16-17

tenance..17

7

ntenance..14

2

tenance...14

assembly

all135

removal

it....46

mainte-

engine..6

ntenance.18

ng123

153

enance....15

mbly

hip-

nect.... 149

ections,

ctionand

ftas- P u b l i c D o m a i n , G o o g l e - d i g i t i z e d

/ h t t p : / / w w w . h





E— MEDIUMTRACTORMl(Allis-ChalniersHD-7W)

C14)

d120

ipment154

4-155

ce18

ksor

nance....15

7

ntenance17

helons

y....18

15

as-

eand

5

ent,inspec-

connect.145

olecov-

ringlubri-

3

ction...20

xhaust

ntenance..18

ve26

ilfilter

rassem-


/ h t t p : / / w w w . h





assemblies

8

7-88

0

ear,ex-

.......6

....24-25

.....87

efrom

7-88

nspec-

.....116

...158

5

0

5

157-158

0

5

153

.....22

......4

mbly,main-

ship-

5

tall.....151

ove.....39

......153

rassem-

77

ing... 150

enance...13

intenance.13

yandcon-

..13

crank-

-11

g,illus-

ate

ship-

oler-

duse...4

tenance..18

bly,main-


/ h t t p : / / w w w . h






C14)

sm158-159

es,mainte-

,mainte-

helons..15

s,mainte-

engine..150

4

..159-160

ce17

m,main-

nance....16

es,main-

blies,

s,mainte-

e

t,exces-

4

ve26

ear,ex-

5

—26

,mainte-

mainte-

ds,mainte-

ver....


/ h t t p : / / w w w . h





e

sm,fits

efrom27-38

enance....18

bly

thermo-

sone

aintenance15

essories.6

ance...18—19

nance...19

install.149

stall... 150

dfront

acket,re-

econnec-

and,

rum,

TARYOFWAR:

ls,seeFM21-6)

RAR1TANARSENAL


/ h t t p : / / w w w . h





Documents

TM 9-1783A A-C HD-7W DIESEL ENGINE