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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
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T~~JVN Q'
lUrCorporation)
tions
edium
ombina-
vehicle
ditions
uctions
667-71
4
d
Engine)50-6176-137
esTM9-754,August29,1942.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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ructions (Cont.)
onsystem62-69138-153
-230
aljoints96-103256-266
7
118298-318
9-324
gsystem126-137325-354
80
381-*52
t187-190453-460
63
4-466
M
P u b l i c D o m a i n ,
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tions
heinformationoftheusingarms
theMediumTankM4A4this
mationrequiredfortheidentification,
chrepairsasmaybehandledby
rtakenonlyunderthe supervision
nic.
ftherepair,modificationoradjust-
litiesoftheunit,theresponsibleord-
dsothattrainedpersonnelwith suitable
ided,orproperinstructionsissued.
754,MediumTankM4A4,
ariousunitshavebeenreplaced
nalillustrationshavebeenadded.
rtainingtovariousunitshas been
eenaddedandlubricationin-
armored,fulltracklayingvehicle
all-weldedconstruction,andacast
withtheturretsusedon allM4series
he"ChryslerTankEngine"power
l.Thevehicleserialnumberi s
M
P u b l i c D o m a i n ,
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mTankM4A4
ndtwo rear)towhichthetowing
erencestoserial numbersthroughout
.
ODELS.
PS,mountedonthedistributorendof
dinproductionfromvehicleserial
03 (fig.19).
M
P u b l i c D o m a i n ,
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mTankM4A4
untedonthedistributorendof the
oductionatvehicleserialnumber5804
untedonthe distributorendof
nfromvehicleserialnumber4805to
inningwithvehicleserial number
onthedistributorendof No.4engine
ntedbetweenenginesNos.1and
hicleserial number4805toserial
gwithvehicleserialnumber5804,
ightingcompartment(fig.153).
M
P u b l i c D o m a i n ,
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M
P u b l i c D o m a i n ,
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heChokeType,wereusedin
mber4805tovehicleserialnumber
ber16555to serialnumber17112
serialnumber17113thermostatsof
).
closedtype,wasusedinproduc-
805to serialnumber6204andfrom
mber17793 (fig.65).Theventilated
atvehicleserialnumber17794.
eoffueltank wasusedinM4A4
mber4805toserialnumber6204 and
l number17793.Theinsulatedtype
vehicleserialnumber17793 (par.77).
05
mately66,000Ibs.
.
3in.
400rpm(prop,shaft speed)
ories5,375Ibs.
stresistor
ater
unit)160gallons
ngunittank)5l/2gallons
ng8hours at20mph
M
P u b l i c D o m a i n ,
G o o g l e - d
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M
P u b l i c D o m a i n ,
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M
P u b l i c D o m a i n ,
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i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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s
illingafter
2F.
o-30F.
unds persquareinchat750 rpm
60poundspersquareinch
F.aboveoutsideair temperature
road)20mph
)'.25mph
speed2,900rpmshortperiods
d750rpm
longerthanfiveminutes.If neces-
dslongerthanfiveminutes,adjusthand
to950-1,000rpm.
ty35degrees
lity35 45degrees
ewillnegotiate24in.
eestraverse).
topof turret.
guninclipin turret.
nd.
n.
ionisprovidedforthedriver and
rectvision devices.
M
P u b l i c D o m a i n ,
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P u b l i c D o m a i n ,
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P u b l i c D o m a i n ,
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thick,360degreestraverse.
ch
s
supplytank)10gallons
gallons
gallons
M
P u b l i c D o m a i n ,
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S
nce6
NCONTROLS.
olisentirely automaticand
torof thevehicle.
.Afootacceleratorpedalislocated
using,convenienttothedriver'sright
pedal,a hand-operatedthrottleis
bracketjustforwardof thegearshift
dthroughapush-pullcontrol.
bracketmountedtotheleft wall
venienttothedriver'slefthand(fig. 9).
eversaremountedonthe floorof
ver's seat(fig.9).Tosteer thevehicle,
etowardwhichitis desiredtoturn.
versslowsdownthetrackonthat side,
kiscorrespondinglyincreasedtoassist
ereispoweron bothtracksatall
thrubbergrips.
rolhandlesofthefuelshut-off
thepowerunitcompartmentbulk-
shafthousing(fig.34).
arning.Fiveredwarningsignals
mentpanel(fig.10).Aboveeachred
ndicatestheenginereferredtobythe
dlightindicatesanengineoperating
nnormaltemperatureisreached,the
ff.Ifoneor moreoftheselightsappear
anormallyfunctioningpowerunit,the
be operatingpoorly,ornotatall.
ocatethetrouble.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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M
P u b l i c D o m a i n ,
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ghwatertemperatureinany
heredsignalonthe instrumentpanel
")tolightandtherebywarnthedriver
uregageselectorswitch(fig.10)
gonthewatertemperaturegageto
signalcame.Stopthepowerunit
engineindicated.
onis "ON"whenignitionswitch
ht.
h buttontypeswitchlocatedto
nergizesthestartingsolenoidwhen
gbacksimultaneouslyonbothsteering
ehicle,dependingontheeffortapplied.
kingbrakeleverislocatedonthe
isatransmissiontypeofbrake.
sethanparking.
slocatedto theleftofthe
driver'sleftfoot(fig. 9).Topermit
sengagedbydepressingtheclutch
d,the powerunitwillrunidle.
RATION.Shiftingofgearsin thetrans-
mplishedbythegearshift lever,lo-
rightofthedriver(fig. 9).
ftleverforthe variousspeedsare
edwithalatch whichprevents
dorreverse.Thelatch mustbereleased
topoftheleverbeforeshifting into
reextinguishercontrols(fig.
rearof thedriver,arewithineasy
ontrolslocatedjusttothe rearof
eextinguishersfromoutsideof vehicle
M
P u b l i c D o m a i n ,
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M
P u b l i c D o m a i n ,
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i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
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LS
M
P u b l i c D o m a i n ,
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EMAINTENANCE.
ankdriverandeverymemberof
evehicleunderthedirectionofthe
uldcoverthecompletevehicleaswellas
owerunitare filledwiththe
inthelubricationguide(par.23).
essary.
urn ignitionswitch"ON"and
fuellineconnections.
leakageinthefightingandpower
he groundunderthevehicle.
fuelsystemandinoil lines.
torand filltobottomof filler
ofradiatorfordirt.
dconnectionsforleaks.
tordrivebeltsfor adjustment
par.107.,c.).
eunits(par.107.,e.).
sprockets,bogies,springs,guides,
rsandidlers.
ssandtension,andcheckend
arintrackwedgesandwedgenuts.
ksandgeneralcondition.
itionoffireextinguishersand
s,clutchpedal,acceleratorpedal,
over theirfulltravel.
seethatammeterreadszero
otherinstrumentsindicatenormal
1)andwatchammeterandvolt-
vedischarge,open.batteryswitch
hetrouble.Correctreadingonthe
iren operation.
generatingunit fueltank.
M
P u b l i c D o m a i n ,
G o o g l e - d
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n switchisturned"ON",checksig-
and sendingunitsonpowerunit
epowerunitwill operateat
ertemperaturegageregistersaminimum
seethatthegeneratoris charg-
cate"-)-"withpowerunitidling,speed
pressingtheaccelerator.Iftheam-
lookforslippinggeneratordrive
g.10)shouldregister between
tiswarmedup.If temperature
tand investigateforlossofcoolant.
lercapfromahotradiator,always
letallsteampressureescapebefore
eisapossibilityof seriouspersonal
cknutholdingcap inplaceandallow
s freetoopen.
itions
M
P u b l i c D o m a i n ,
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segear,acompletestopmustbe
tachometer(fig.10) reads750
OTE:Donotidle powerunitatthis
necessarytoidle powerunitfor
adjusthandthrottle toincrease
.Depresstheclutchpedalandmove
sition(fig.12).Neverattempttoback
stationedinfronttoguidethe driver.
andsteeringlever(fig.9) to
leverto makealeftturn.This
mturning asfastasthe othertrack
driveranticipatesmakingaturn
celeratortoagreaterextent,de-
turn.
heacceleratorandpullbackon
time,depressingtheclutchpedalwhen
proximatelytwotofivemiles per
risbeingemployedbeforestopping.
on thetransmissiontothe
Usethis brakeonlyforparking
motion.
eraturegage,theoil pressure
age(fig.10) givethemostsatis-
nit'sperformance.Shouldthetach-
ethecauseandcorrect.Theoil tem-
proximately120F.aboveoutsideair
tion.Shouldthisgagefailtoregister,
eratingtemperature,investigatethe
ldreadbetween25 and60pounds
houldreadbetween40and 70
rpm.Thewatertemperaturegage
d235 F.Ifthegageindicateseither
ure,orifthe"high watertemperature"
stopthevehicleandinvestigatethe
or,whilewatertemperaturegage
2F.,checkforfaultypressurevent
afterithas reachednormalop-
ndthrottleclosed,investigatethe
unitidlespeedis750 rpm.CAUTION:
hanfiveminutes.If necessarytoidle
n fiveminutes,adjusthandthrottle
1,000rpm.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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ankM4A4,includesthefollowing
rret whichcarriesa75-millimeter
fig.15); anantiaircraftmountonthe
machinegun;aballmountin theassistant
nner)(fig.15),mountingacaliber.30
machinegunis carriedintheturret
nersitsatthe rightofthe75-milli-
tionof25 degreesanddepressionof10
hehandwheelofthe elevatingmech-
eguns isobtainedbytraversingtheturret
nsarefiredelectricallybymeansof
sleftfoot.Thesegunscan alsobefired
ationofthegunsis maintainedbythe
sdescribedinparagraphs138to 159
ntdriver'scompartment(orbow
bothelevationandtraversewithinthe
s manuallytraversedbyrotating
gthegunon itsmount.
ncanbeused eitherthroughapistol
oughtheturrethatch.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
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KINGPIN
StationinRightBow
M
P u b l i c D o m a i n ,
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dof
rdof
tof
bas-
dtur-
xes
r.
xes
di-
ound
ard
t.
und
et
enda-
.
2
eft
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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_ u s e # p d - g
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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E
peration20
foperation21
y,itisnecessarythatvehiclesbe
valsinorderthatdefectsmaybedis-
yresultinseriousdamage.
orother metalpartsmayfre-
mediumofdustand oildepositsat
ofarun.
hangesindesignpromptedby
aunitor groupofunits;pertinent
ancemethods;andchangesinvolving
mfort,totheofficeoftheChief of
nnels,atthetime theydevelop.Such
ther organizationsmayprofitthereby.
refullydone,-andis covered
etectabnormalfunctioningof
ote ifanyunusualnoisesappearin
frequentlyat theinstrumentpanel
unctioningproperly.Lowoilpressure
gnal ontheinstrumentpanel,there-
deif thiswarninglightappearswhile
onstantspeed.Oilpressurewillread
vingspeedswhenoillevelis high
willbeindicatedbythewarning
ereforeaninvestigationmustbe
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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arsduringarun.Thisis indicative
orlowcoolantlevelinthe radiator.
achenginebyturningthelever on
torswitchtotherespectiveengine,
3,4,5,directlyabovetheswitch,
rtemperaturegage.
ntofclearanceoftheclutchpedal.
aph95.NOTE:Thisclearancemust
ntat alltimes.Checkthesteering
eengagement,intensityofpullre-
mmeterforproperchargingrate(10
ellcharged;amaximumof50amperes
arged).
mstancesshouldavehiclebeoper-
avebeenobserved.Whenin doubt,
ssistance.Inspectionduringoperation
hasizethisfactthroughoutthe driving
Thismaybecausedbyaccumu-
h,orbybroken ordamagedbladesin
pectionofthevehicletodeter-
dition.Correctanyminordefectsde-
withminordefectsdiscoveredatthe
fthedefectscannotbe corrected
ositionof thevehiclesothatunneces-
jorfailure prevented.
inspectionduringthehaltisas
ornotmorethan fiveminutes
nforunusualnoises.NOTE:Do
nfiveminutes.Ifnecessarytoidle
n fiveminutes,adjusthandthrottle
00rpm.
ingcarefullyforfuel,wateror
ntajidforworn,loose,broken,
anyforeignmateriallodgedinthe
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
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E
missing,worn,orlooseparts.
ndgear caseforevidenceof
operation,ifassignmentpermits
hetanks.
tor.If levelofcoolantislow,
serveprecautiongiveninparagraph
notuseanoilyor dirtyrag.
belts(onpowerunitsso
ings.
eration,haveaninspectionmade,
morethoroughanddetailed.Follow
ntenance.Ifdefectscannotbecor-
efofSectionor otherdesignated
points:
rwornor brokenteeth.
r unserviceableunits.
ar.23.).
units.
ar.75.,f.).During extremely
halt.
hieldwipers.Checkforloss or
devicesforbreakage.
fectiveperformance.
ent,andaccessoriestodetermine
lled.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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ingcompartmentsforcleanliness
tion.
servingprecautioninparagraph
ngpointofsolution (par.83.,i.).
nhotweather,checkbatterywater
ordrivebelttension(on mul-
oseconnectionsandabrasions.
valvesareclosed(fig.19).
is open(fig.121).
MILESOFOPERATION.
ovingthepowerunit fromthe
startingpreventivemaintenance)
thefollowing:
dividualengine,byshortingout
nofother engine.
pplytankforleaks.
s forbreaks,looseconnections,
igidandflexiblelineshavingsharp
ar.80.,c.).Ifexcessivewateris
noutletscreens(par. 77.,e.).
newoil butdonotoverfill(par.
pesand flexibleconnectionsforleaks
boltsand checkforloosebolts
Noteconditionofvolutesprings,
cks,suspensiongudgeonpinsandbogie
oseormissingwedgesand wedge
ordeadtrackblocks.
orexcessivewear.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
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E
nutsfortightness(fig. 90]
ovalofthatpartof thepropelle
stherearpropellershaft,as wel
ropellershaftfrontflange.
centerbearingsupportbracke
fig.91).
owarmat750rpm. NOTE:D.,(5)).
e(fig.26).
washersandliftcoverfromradiator
sin tank.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
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andforeignmatterfrom mounting
ank.
fig.26).
ressure-ventvalvegasketinbottom
ositionvalve inrecessintank(with
sitionnewgasketonmountingface
securewithfour capscrewsand
entCover(par.53.,a.,(42)
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
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3
el94
was usedinM4A4productionfrom
alnumber6204, andfromvehicleserial
7794(figs. 71and73).Beginningwith
ntilatedtypeofclutchenteredproduc-
atedtypepermitspassageofairthrough
elringgear,flywheelandfan assembly.
sofseparatingthedriven disksand
theventilatedtypeof clutch.These
eable.However,iffullventilatingresults
ytoreplacethefanassemblywiththe
ntilatedtypeofclutch.
disktype,mountedinside thefly-
stforwardoftheradiator.It consistsof
randone inner),onedrivingplate,one
embledto theflywheelring.
nacarrierwhichis assembledto
remountedflatto theflywheelring
MediumTankisdissimilartothe
mTanksin thattheclutchfacingsare
outerandinner)insteadofbeing riveted
pressureplate.
astortype areusedinthe early
pereleasebearingenteredproduction
s.Bothtypesof bearingsareshownin
tobreaktheflowof powerbetween
siontofacilitateshiftingotgeais.When
ad oftheclutchspringspressesthe
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
235/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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s oftheclutchtogethersothat they
gpowerfromthepowerunitto thepro-
sengaged,this springloadisreleased,
tei ndependentlyofthedrivendisks,
omthe powerunit.
urethepedalhasapproximately
Donotrestfooton clutchpedalwhen
mbled(FullyEnclosedType)
LYWHEEL,
ofoperationsinvolvedinthere-
chandflywheel,thefollowinginstruc-
dtypeand theventilatedtypeclutch.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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RENCH,^-in.
NCH,ft-in.
ket,l}-in.
ROMVEHICLE(par.52.,b.)-
,socket,l}g-in.
removefromshaft(sidecutting
of flange(turncounterclockwise)about
).Donotremovenutfromshaft at
NGTOFLYWHEELBOLTNUTS(figs.71
-in.
reedrive plateseparatorpinsthree
-in.wrench;screwdriver)(fig.72).
outerperipheryofclutchflywheelring
tensionevenlyaroundring(^4-in.
elandalsotheflywheelring,atone
nreassemblingofparts (steelhammer;
NGANDPRESSUREPLATEASSEMBLYFROM
k,%-16x4-in.
)
eeve,attachsling tochainhoistand
nholdingclutchinalinement.Tapedge
splaces,on outeredgeofring(to assist
(brasshammer).NOTE:Shouldfly-
screwonejackscrewin eachofthe
ose(figs. 71and72),tighteningthem
orcedawayfromflywheel.Removejack
omflywheel(A-in.wrench).Withdraw
ssemblyslowlyawayfromflywheel.
assemblyasoutlinedabove,thespindle,
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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disksareremovedatthesametime.
ytoapointwherethespindle isfreeof
notthe drivingplateandthetwodriven
theyare,besureto holdinplaceto
theeventthe drivingplateandtwo
openingintheflywheel,liftthemout of
llnotbe damaged.
FLYWHEELRING.
k
erofdriveflange,withfingers,and
ckpunchendofspindle,andflangeto
eelhammer;prickpunch).Tapendof
er,toforcespindleout ofboththe
ammer).
UTANDFRONTCONE(fig.80).
OCK,wood,2-in.x4-in.x
tainingpin, liftflatwasheroffre-
mnut (sidecuttingpliers).Placea
81)betweenoneblade ofthefanand
hefanwhileremovingconenut.Insert
rthroughtwoofthe34-in. roundholes
deofnut,turn nutcounterclockwiseand
nedwith550 to650ft.Ibs.torque,
nsiderablepressurewillberequiredin
emovingthisnut,holdthetwohalves
d damage.
HEELFROMPOWERUNITDRIVENSHAFT
hhub
adedsectionofclutchhubandpull
werunitdrivenshaft.Afterremoving
flatsurface,toavoidanydamageto
M-A4-4).
.77).
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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240/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
241/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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neandspreadcone,veryslightly,to
offshaft.
WHEEL.
HAMMER,brass
NCH,prick
nflatsurface,withopeningin fly-
elandfanforidentificationpurposesfor
erandrestiton awoodblock12-in.x
ocatedinsideopeningin fan).Drivethe
boltsoutof flywheelandfanassembly
arytouse theDRIFT,steel,^-in.x10-in.
OTE:Holdfanwhileboltsare being
etofanfalling.Turn assemblyoveron
level,liftfanoffflywheel(twomen).
H
dFlywheel ShowingMethodtoUse
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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nandthat allunserviceableparts
ANASSEMBLY.
MER,rawhide
HOIST
2-in.x12-in.x12-in.,withopeningdown,
ceabar acrossthesmallopeninginfan
aisefanin positionaboveflywheel
ert threeflywheeltoflywheelring
an (evenlyspacedaround,fan).Keep
aceover flywheel,aliningproperly
nand flywheel.NOTE:Iffanis
ttolowerfan completelyoverflywheel
sis necessary,givefanaquickheatby
anwitha blowtorchorsubmergingin
hus permittingflywheeltoenter
inplaceonflywheel,removehoistand
oforcefanoverflywheelwithout
essary),however,itmaybenecessary
dFlywheel TappingwithHammer
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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ammer,asshowninfigure76to assemble
necessarytotap withrawhidehammer,
heelringgearonly,to avoidanypossi-
ch;rawhidehammer).Tapthethree
driventhroughtheflywheeltheirfull
erttheothernineflywheeltoflywheel
ndtapintoplace.
ubRearCone
77).
enremovedfrompowerunitdriven
anandfreefrom burs(bothoutside
ebrass coneonthepowerunitdriven
he coneawayfromthepowerunit,
derontheshaft.NOTE:Ifconeis tight
slotandspreadconeslightly.
DFANASSEMBLYONPOWERUNITDRIVEN
nandmakesure therearenoburson
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
245/480
e separatorpins(onclutchesso
heel(withsmallendof pinenteringfirst).
dinholesandthat theycontacttheir
eofflywheel(fig.80). Havetwomen
nd,withanothercheckingalinementof
lywheelAssembly
bFrontCone
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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erunitdrivenshaft,pushingassembly
8).NOTE:Wheninstallingthisassembly
surethe flywheeltoflywheelringbolt
oidanydamageduetoboltsstriking
NDNUT(fig.80).
LE,mill
nandmakesureallburs havebeen
used,separatethe twohalvesby
offflush withconebody(millfile)
powerunitdrivenshaft(turnclockwise),
nutinplace.Placethetwohalvesof
bledoverflangeonnut, andthesmall
nit)inpositionand screwnutontoshaft
odenblock,2-in.x4-in.x18-in.,between
HOLE
FrontCone
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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entturningoffaninthe clockwisedirec-
helargeholesin nut,and,turning
50-foot-poundstorque.
UTRETAININGPIN(fig.82).
powerunit drivenshaftalineand
ameterof shaft,throughhole,position
HubFrontConeNut
cotterpinthroughholeinretainer pin
erpinaroundretainerpin.CAUTION:
outsidesurfaceofnutascentrifugalforce
twardandshearthecotterpin.
YWHEELHUB.
VENT,dry-cleaning,andmakesure
emovedfromthespindlebearing(inside
plycompressedairto thelargeopening
SOLVENT,dry-cleaning.Wipespindle
beenremoved.Packrollerbearing
oneNo.44or equivalent.Fillcavityon
elyflushwithinsidediameterof bearing.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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oneNutinPosition
dle
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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eNo.44,ongreaseseal leather.Position
into hubthefulldistance.
DRIVENDISKINFLYWHEEL(fig.84).
surethe splinesinhubare freefrom
eparatorpins inflywheelandmake
ondisk(withbodyofhubsectionaway
dleand insertintoflywheelthefull
EINFLYWHEEL(fig.85).
sureall bursareremoved.Position
owspointingin counterclockwisedirec-
gplatewiththe sixflywheeldrivingpins
flywheeluntilitrestsagainstthe three
nreleasepressure,to besurethesepara-
latetoposition.
ERDRIVENDISKINFLYWHEEL(fig.86).
surethe splinesinhubare freefrom
hub sectionawayfromflywheel)on
tagainsttheclutchdrivingplate.
enDiskinPosition
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
250/480
RROWRAPD24432
teinPosition
NGANDPRESSUREPLATEASSEMBLY
in.
ringinflywheelringhub with
ckflywheeltoflywheelringboltsand
dtowardradiator.Loosenlocknuts
ee driveplateseparatorstudsatleast
se)(screwdriver).Havetwomenlift
ofspindle,alinetheprickpunchmarks
g,andslide assemblyontospindle.
semblyontospindle,makesurethe
yalinedandthatboltsare notpushed
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
251/480
E'RAPD24433
enDiskinPosition
OLTNUTS(fig. 88).
ocket,3/^-in.
RENCH,torque
wheelringbolt nutsandtightenevenly
que,(34-in.socketwrench)(torque
saryto holdboltsfromturningwhile
gh openingbetweenfanbladesand
nch).Useascrewdriverandturn each
rstudsuntiltheyrestagainst plate,then
oldstuds inthispositionandtighten
HAFTFLANGE.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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lywheelRingandPressure
ngeandendofspindle,slide flangeon
sshammer.
HER.
,socket,l^-in.
dleandscrewnutin placeonspindle
poundsoftorque(1}j|-in.socketwrench).
ionsof nutandthroughholein spindle
decuttingpliers).
CHFORPROPERRELEASEBEFOREINSTAL-
VEHICLE.
angeofclutch releasesleeve,place
flywheelring,press baragainstwood
in.awayfromclutch.Withsleevein
reelyby hand.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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elRingtoFlywheelBoltNuts
FANASSEMBLY.
ffanbladesandradiatorshroudand
f starterhousing.
NVEHICLE(par.53.,a.).
lspringloadon theclutchdriving
essarythattheclutchpedalhavefree
elshouldbe2y2-in.NOTE:Asclutch
avelis reduced.CAUTION:Ifthe
reno freetraveloftheclutchpedalis
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
254/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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tly disengaged,resultinginexcessive
chfailure.
delswithoutturnbuckle)(fig.89).
WRENCH,open-end,%-in.
,open-end,1-in.
od(Longrodrunningthrough
WRENCH,%-in.
,open-end,^8-in.
verandremovethecover(forward
nel),directlybelowthefrontuniversal
-wrench).NOTE:Donotremovethe
oint.Loosenthe clevislocknutby
,abouttwoturns (%-in.open-end
ispinand pullclevispinfromclevis
tionalclearanceforremovingthispin
celeratordowntoswingthrottle shaft
ingsforPedalAdjustment.
chclutchreleasebearingandthefront
).NOTE:Haveone manholdthese
ustmentisbeing made.
erAdjustment.
agedposition(until itrestsagainst
sembledattimeofmanufacture,the
garmismountedon thecrossshaftby
arksinboththe armandtheendof
arytoassureproperoperationofclutch
regoing,itisvitallyimportantthatthe
mainassetattime ofmanufacture.
edonshaft,thecenterofholein arm,to
ached,willresteightdegreesaheadof
indexmarksonarmandshaftand to
everifiedbyrotatingarmuntil index
ndnotingpositionoflowerendof arm.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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Connect.
,open-end,T^-in.
weenclutchreleasebearingsand
ndclutchpedalinthe fullyengaged
eleaserod,byscrewingclevisforward
vispinopeningsinclevisalinewith the
arm andpermitinsertionoftheclevis
arm(fig.89). Recheckbacklashclear-
dreinsertingthemtomakecertainthat
cotterpin throughholeinclevispin
tosecureinplace(side cuttingpliers).
nstclevis (^s-in.open-endwrench).
enclutchreleasebearingsandrelease
gCoverPlate.
gdirectlybelowfrontuniversaljoint
ousingandsecurewithfourcap screws.
equippedwithturnbuckleon
WRENCH,open-end,1-in.
.
pen-end,1-in.
ovecoveronrightsideof propeller
el)(}4-in.wrench).Turnlocknut at
wiseuntilitisclearofturnbuckle(1-in.
g.89).
WRENCH,open-end,1-in.
gagedposition,adjustturnbuckleuntil
dfreely betweentheclutchreleasefork
gageblocksinplace,tightenturnbuckle
hatgageblockscanbeinsertedbetween
en-endwrench).
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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gCoverPlate.
opellershafthousingand securewith
bricatedonthe earlyproduction
e powerunitairinletgrille andapplying
ughalubricationfittingoneachrelease
on,tubesareattachedtoeachrelease
junctionblockonthebulkhead,directly
ationfittings,accessiblefrominside
achedtothisjunctionblockbymeans
of lubricatingtheclutchreleasebear-
partment.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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VERSALJOINTS
erbearing97
bearing98
nterbearing99
02
pjoint103
ftinthe M4A4tankcomprisesa
dtoashorterrear shaft.Thefrontpro-
atthetransmissionendandis connected
mpanionflangebyeight bolts.The
na rubberinsulatedpropellershaft
dbybracketsfromthehull floor.The
universaljoints.Thefrontuniversal
rshaft(fig.90),isattachedbyfour bolts
ntpropeller shatt.(NOTE:Invehicles
mthe enginegeneratorisinstalledin
enerator,thusinstalled,isbeltdriven
ntpropellershaftrearflange).Aslip
ompensatesforlongitudinalmovement
wertrain.
ovepropellershafthousingcovers
bolts securinguniversaljointflanges,
nterbearingsupportboltseverytwenty-
tire propellershaftassemblywhen
versaljointsorcenterbearing (unless
at whichtimethefrontorrear shaft
dfromthe vehiclethroughthepower
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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VERSALJOINTS
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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260/480
RSHAFTCENTERBEARING.
-'m.
,socket,l{$-in.
n.
ER.
curepropellershafthousingcover.
ALJOINTFLANGESATCENTERUNIVERSAL
in.
orproper locationinassembly.Re-
herswhichsecurerear propellershaft
rearflangeatcenterbearing.
RSHAFT.
upportrearpropeller shaftsoitis
FRONTPROPELLERSHAFT(fig.91).
,socket,1\%-in.,
ft,for properlocationinassembly,
ers),nut(l-J-jj-in. socketwrench,exten-
ngefromshaft.(Usepullerif necessary).
PLE(fig.90).
enterbearinghousing(turncounter-
NGHOUSINGBRACKETS(fig.90).
oneat topofcenterbearinghousing
rreinstallation.
NGHOUSING(fig.90).
haft.Onegreaseretainerwillcomeout
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
261/480
IVERSALJOINTS
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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NG(fig.90).
aininggreaseretaineroffshaft.
operlycleaning andaliningbearing.
damagedpartsandprelubricategrease
SHAFTCENTERBEARING.
,socket,lj$-in.,
n.
NGINSUPPORTBEARINGHOUSING.
bearinghousing.Positionagrease
.With"turnedin"lips,besure that
edinthe housing.
HOUSINGONSHAFT(fig.90).
propellershaft,beingcarefulnotto
ROPELLERSHAFT(fig.90).
,socket,l{$-in.,
dofshaftandflangeand installflange
onwasherandnut,tightening nutto
propellershaft(lf|-in.wrench).Insert
nsand holeinendof shaftandbend
ecuttingpliers).
PPLE(fig.90).
ngin sidebearinghousing.
NGHOUSINGINBRACKETS(fig.90).
sand installcenterbearinghousing
s.Positionbrackethalvesto alineattach-
eftside)throughupperhole,install lock
(fromleftside)throughthethree lower
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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VERSALJOINTS
bracketsupports,installlockwashers
urely(wrench,^-in.).
CENTERBEARING(fig.91).
ickpunchmarks,insertthefourbolts,
ighten securely.
g.91).
e,tolubricantnippleuntilitis forced
LERSHAFTCENTERBEARING.
catedinthe right-handsideofthe
videsameansoflubricatingthe center
very1,000miles.
FTHOUSINGCOVERS.
dl iftupsectionofturret floor
achthroughopeninginfloor,remove
housing,andliftcoveroffhousing.
g.91).
e,tolubricantnippleuntilitis forced
AFTHOUSINGCOVER.
curewiththe capscrewsandlock
RSALJOINT.
2-in.
FTHOUSINGCOVERS.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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dl iftupsectionofturret floor
ersaljoint.NOTE:Thiswill notbe
coveristo bemoved.Reachthrough
crews,onboth rightandleftsides of
curescovertohousing.Liftcoverfrom
lJointBearingOutofYoke
INTBEARINGCOVERPLATES(fourcovers
.
removetwocapscrewsfromeach
ytorotatepropellershaft inorderto
oint.
INTBEARINGS(fig.92).
side ofyoketoforcebearingoutof
yoketoforceotherbearingout.
INTCROSS(fig.93).
ufficientlytoprovideclearanceat
movalof cross.Liftcrossfromyokes.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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VERSALJOINTS
ALVE
alJointCross
OINT.
ctpartsfordamageor excessivewear.
S.
sadvisabletoreplacecompletelywith
seseals.
INTCROSS(fig.93).
weenyokesbyrotatingpropellershaft
gs.NOTE:Positioncrossin yokeso
ssoppositeflange.
INTBEARINGS(fig.94).
ringsto holdinposition.Insertin
ersaljointcrossin bearingsastheyenter
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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alJointBearingRAPD24414
ERPLATES(fig.95).
ringsoasto receiveprojectiononinner
onretainercoverscrewlockplateand
ockingscrewssecurelybybending
sof capscrews.
AFTHOUSINGCOVERS.
verremoved)andsecurewithcap
OINTS(par.102.,b.).
RSALJOINTS.
providedwith alubricantnipple,
s(fig. 91).Areliefvalve,locatedonthe
videdtorelievepressurebuiltupby
se,intothebearings.Theonelubricant
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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VERSALJOINTS
icationforthe fourbearingsineach
,000miles.
ATE-^RAPD24417
alJointBearingCoverPlate
FTHOUSINGCOVERS.
dl iftupsectionofturret flooi
ersaljoint.NOTE:Thiswill notb
coveristo beremoved.Reachthrough
crews,onboth rightandleftsides oi
curecovertohousing.Liftcoverfrom
figs.90and91).
e,throughlubricantnippleuntilitis
oppositeside ofcross.
AFTHOUSINGCOVERS.
housingandsecurewiththe lock
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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LLERSHAFTSLIPJOINT.
arpropellershaftrearslip joint
ingtheslip joint.Attimeofassembly
rewedintothisopeningthus necessitating
nstallationofalubricantnipple,when
Agreaseretainer,topreventlossof
d oftherearslip jointyoke.Itisheld
ateslipjointevery1,000miles.
y2-m.
FTHOUSINGCOVER.
dl iftsectionofturretfloordirectly
apscrewswhichsecurecovertohousing
ig.90).
yoke(screwdriver)andinstalla
djustablepliers).Unscrewknurlednut
lug(turn counterclockwise),apply
ughnippleuntilitis forcedoutfront
nurlednuton yoke,withfingers.
tablepliers),andinstallplugin open-
wdriver).
AFTHOUSINGCOVER.
achwithcapscrewsandl ockwashers.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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07
er110
oolerIll
.
transmission,differential,and
rwardspeedsandonereversespeed.
ransmissionandis operatedbyalever
Use thisbrakeonlyafterthevehicle
a"controlleddifferential"because
ginepowertothefinaldrive unit,but
thepurposeofsteeringandstopping
itpowerfromthecontrolleddif-
gsprocketsthroughasetof reduction
oltedtoeachsideof thedifferential
tedtothe hub.Thefinaldriveunits
gthepowertrainfromthe vehicle.
RAIN.
sareauthorizedto removeandin-
eplacementofapower trainwith
donebyusingarmsunlessauthoriza-
ersonnel.Removalofthepowertrain
ceoperationthatwillrequireseveral
muchofthe operation.Onmanyoi
mustbeheldwithin thevehiclewhile
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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270/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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outside.Nospecialtoolsare requirey fy
JJLJJLJJLiJIJJlJJUJIJJLUIJJIJJUJLLJ LULLJLLJ LLJLLJ LULLJLLJ
cDcOcOcOcOcOcjQcOcOcOcCicClcOcDcOcOc OcOcO O3
zzzz
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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gebatteriesareconnectedinseries
stemat24volts(figs.121, 154,,156).
batterycompartment,locatedonthe
ngcompartment,behindthedriverand
dofinspectionwillvary.In hot
ynecessarytokeeptheelectrolyteat
ratinginextremehottemperatures,as
emademore frequently.Keepthe
vetheperforatedbaffleplates.These
ningin eachcell,afterremovalofthe
en-end,s/8-in.
en-end,V2-in.
ofturretfloordirectlyabovebattery
turnasdirectedonknob(fig. 121).
(twooneach side)whichholdthe
fbox.Loosennuts whichsecurecable
counterclockwise)(Vi-in.open-end
eninginsplitconnector,tospreadcon-
ypost. CAUTION:Donottwistcable
kelytotwistthebatteryterminaloff its
ningthebattery.
ryBox.
lddownstrapsandli ftbatteryout
RENCH,open-end,s/8-in.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
387/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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thpoststo receivecablesatendof
21).Placebatteryholddownstraps
ten.
xCover.
connectorswithpetrolatum,toprevent
ostandtightennutssecurely.Install
fourclampsinposition.
ocatedontheleftsideof thebattery
terypoweratthesource.A second
meboxforcuttingoffofthe radiocircuit
h,pulluponhandleandturn itto
en-end,s/8-in.
RENCH,socket,V2-in.
r.161,c.(1)(a)).
igs.121,156,161).
en-end,s/8-in.
separatesbatteriesfrombatterycon-
terofswitchknob(screwdriver)and
nutsandremovecablesandstrap con-
open-endwrench).
RENCH,socket,Vi-in.
hichattachthe switchmountings
x(Vi-in.socketwrenchoninsideof
eofbox).Removethetwobolts
tingbracketandseparateswitch
h(2)).
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
389/480
ket,V2-in.
)
ket,V2-ia
knobandremoveknob(screwdriver).
urewithtwoboltsand nuts(iVm-open-
witchthroughopeninginbatterybox
bolts andnuts(Vi-in.socketwrench
wrenchonoutside ofbox).Secureknob
knob(screwdriver).
alpostsandsecurewith attachingnuts.
stallBoxCover(par.161.,d.,(1),
belt-drivenstraightshunt
ig.159)consistsofthegenerator,genera-
breaker(par.162.,j.) battery(par.
tmeter(par.170.).
ppedwithmultipletypewater
ountedto-No.2engineanddriven
elt(fig.20).On powerunitsequipped
neratoris mountedinthefighting
mapulleyon thepropellershaftflange
RTENSION(pars.86.,d.and162.,h.,
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
390/480
ATURE!_
WITCH
E
LOT
.
.
.
.-
W.NO.
W.NO
W.NO.
W.NO.2
W.NO.1
InstrumentBox
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
391/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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ptype).
,socket,38-in.,
on
cket,V2-in.,
n
en-end,s/s-in.
spanner,closed
ntRearDoors(par.52.,b.,(6) ).
entCover(par.55.,c.,(1),(b) ).
ry Switch(par.52.,b.,(1)).
ig.159).
,socket,V2-in,
extension
neratormountingnuts andliftgenerator
swhichsecurewires toterminalsinside
s(3/8-in.andVi-in. socketwrenches,
ewknurlednutwhichsecuresconduit
esfrombox.
.,).
ar. 65.,b.,).
ketfromEngine.
,open-end,s/8-in.
gpliers),removescrew(screw-
ecuresfuelline totopofgenerator.
neratormountingnuts andliftgenerator
nch).
mp-type).
,socket,3/8-in.,3-in.
ket,V2-in.3-in.
en-end,s/8-in.
spanner,closed,
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
393/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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onEngine(fig. 20).
,open-end,s/8-in.
mountingstudsand securewiththe
negeneratorpulleywithdrive pulley
n whenoperating.Tightennutsse-
urpal nuts(s/8-in.open-endwrench).
orshieldandsecureclip withscrew
ar.65.,c.,).
eratorDriveBelt(par.87.,c.).
,socket,Vi-in
3-in.extension
de ofterminalboxandtightenknurledf i
l wiretoterminal"F"andsecurewith
h,with3-in. extension).Connectlarge
hwasherandnut(Vi-in. socket:
lcoveronbox,tightenwing nut,i:
wingnutandstudand twistends
forOperation.
ntRearDoors(par.53.,a.,(44)
ntCover(par.55.,d.,(1)(f) )_
pe).
,socket,3/8-in.,
on
RENCH,socket,i/2-in.,w.
n.extension
ySwitch(par. 52.,b.,(1)).
retfloorisdirectlyabovegeneral
ver(^-in.open-endwrench).Loo:
,withfingers,andremovecover.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
395/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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par.162.,d.(1)(d) ).
dle(fig.160).
open-end,Vs-in.
ys-in.open-endwrench),loosen
iftup oncradle,todisconnectbelts,and
p-type).
,socket,3/8-in.with
n.extension
RENCH,socket,V2-in.,with
g.160).
open-end,7/8-in.
ingthedrivebelts ingroovesof
oweredin position).NOTE:Locate
adlefitsinholein generatorframe.Lower
ndsecurewith thetwomounting
ngboltsocradleis freetomoveupand
eneratorandcradlesothereisV2-in.
dwaybetweenpulleys)whenbeltsare
.Hold generatorinthispositionand
r.162.,e.,(1)(d) ).
curewithbolt(T7g-in.open-end
owersectionofturretfloor inposition.
-type).
T.
r.162.,f.,(1)(b)).
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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generatoris freetomoveupand
dlesothatbeltshave Vi-in.deflection
eys)whenbeltsareplacedunder8-lbs.
thispositionandtightenlockbolts.
162.,g.,(1) (c)).
RENCH,IVs-in.
162.,f.,(1)(b)).
generatoris freetomoveupand
nge(par.97.,b.(2)).
slip joint)towardrearofvehicle
tsout ofgroovesinpulleyandremove.
S.
-in.
en-end,3/4-in.
both ongeneratorandpropellershaft.
es.
sition,sliderear propellershaftfor-
nectthepropellershaftflangeswiththe
provided.
2.,h., (1),(a),2.).
ecurewithcapscrews.
62.,g.,(1),(c) ).
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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mptype,apply10dropsof OIL,
urs or1,000miles.Singlewaterpump
breaker,locatedonthebatterycon-
argingcircuitinthe eventofanover-
rries60amperesandwillopenat
anoneminute.Itmustbe closed
ngcircuitresetbutton(fig.121).
CH,open-end,TVin.
y(par.52.,b.,(1) )(fig.121).
Breaker.
curecovertobatteryboxand re-
betweenbatteryboxandcontrols.
nnectwiresfromterminalsoncircuit
BatteryBox.
CH,open-end,T7g-in.
-fo-m.open-endwrenchandun-
tcircuitbreakeroutofbatterybox.
CH,open-end,T7g-in.
eryBoxandConnectWires.
en-end,T7g-in.
tthe twobolts,holdnutsatbot-
handtightenwithscrewdriver.Attach
t,securingwithscrews(screwdriver).
eryBoxCover.
batteryboxand controls,install
clampsateachcornerof box.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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atorregulatorsareused,oneforthe
uxiliarygenerator.Theseregulators
eforetheywillbetreatedas such
sistsof threerelaysmountedona
unctiontoperform.Theseinclude
entrelay,thecurrent limitrelayand
ainsa filter,builtintothebase ofthe
ANCE.
d,otherthantomakesurethat
currentrelay,is anautomatic
dthebatterywhichclosesthecharging
gingandopensthe circuitwhenitis
batterydischargingbackthroughthe
sthegeneratoroutputto50 am-
nsthecircuitvoltagefairlycon-
oltsandcontrolsthechargetothe
morecompletelycharged,thecharging
oscillationswhichwould,other-
adio set.
,open-end,TVin.
H,open-end,V2-in.
ySwitch(par.52.,b.,(1)).
,open-end,Vi-in.
ngpliers),loosenthetwowing
ver.Removelockingwires,remove
ectwirefromterminal.Removenut
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
400/480
wire(V2-in.open-endwrench).Un-
minalbox andwithdrawconduit
holdingclipto sideofsponsonand
pen-endwrench).
ntingPads.
m.extension.
ndliftregulator offpads.
,open-end,^-in.
en-end,V2-in.
pads(fig.121).
8-in.extension.
curewithfour nuts.
minalBoxCover.
,open-end,TVin.
H,open-end,V2-in.
de ofterminalboxandscrew
nduit.Connectwirestorespective
softerminalsand posts)andsecure
.Attachcovertoboxandtighten
gwirethroughholesin wingnutsand
ecuttingpliers).Secureconduitto
lt(-f^-in.open-endwrench).
ectricstarter,locatedbetweenen-
ughanopeninginthe radiatorcoreand
werunitfan.Thestartercircuit(fig.
r switch(fig.166),startersolenoid
(fig.161).
nspectionofthestarterislargely
ons,toseethat theyarekeptclean
arterdrivegeardoes notbecome
npinionscrew.
erswitchbutton(fig.166) actu-
solenoidswitch,thusclosingthecircuit
r.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
401/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
402/480
,socket,Tng-in.
cket,Vs-in.with
n
rySwitch(par.52.,b.,(1) ).
Grille (par.52,b.,(4)).
eof FanCompartment.
chshieldandliftshields fromcom-
oud(par.90,d.,(2), (c)).
lts,ForwardofRadiator.
,Vs-in.
ngpliers)andremovethetwo
ntCover(par.55,c.,(1),(b)).
52,b.,(18) ).
Unit.
,7/8-in,with6-in.
gpliers)andremovethetwo
with6-in.extension).Havetwomen
e starterVi-in.,tocleardowelpins
,socket,Tng-in.
cket,%-in.,with
t.
,socket,Vs-in.,with
ovebracketandslide unitthrough
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
403/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
404/480
sition untildowelpinsarefully
ltson powerunitside,tighten
6-in.extension),andinsertlock-
sandtwistendsofwire tosecure
.,(26) ).
ntCover(par.55,d.,(1),(f) ).
ForwardofRadiator.
,socket,7/8-in.
ecurely(rg-in.socketwrench),
headsofboltsandtwist endsof
pliers).
witchbutton(fig.166) andtest
tchaftertest.
,(f)).
artment.
eitherside,andsecurewiththree
rille(par.53,a., (42)).
.161).
CH,open-end,%-ir--
ySwitch(par.52,b.,(1) >-
par.161,c.,).
BatteryBoxandControl*=*'
RENCH,open-end,s/8-ir-f
lonbatteryswitchanddiscon.*^^^^
-in.open-endwrench).Rent"*'-''-^
oidswitch(towardrear of
d'wrench).Removethetwo
oorof vehicle,and
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
405/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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Box.
CH,open-end,3/8-in.
wrench,insidebox,andremovethe
ox.
h(fig.161).
CH,open-end,s/8-ia
rgeterminalpost,towardswitch
nectto batteryswitchterminal,when
curewithnut(s/8-in.open-endwrench).
(fig.161).
en-end,3/8-in.
ox,insertboltsthroughholesfrom
with3/8-in.open-endwrenchand
RENCH,open-end,s/8-in.
ver smallterminalpost(toward
h lockwasherandnut(3/8-in.open-
owwireoverothersmall terminal
andnut (3/8-in.open-endwrench).
leadsto shuntinoppositeendof
adingfromsolenoidswitchonbat-
ithnut(%-in.open-endwrench).
edthroughopeningin oppositeend
noidswitchand securewithnut
eenbatteriesandcontrolbox.
mconsistsofheadlights,taillights
andblackoutuse,"BO"drivinglight,
strumentboxlights(figs. 154,164
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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ight,insidevehicle) tolength
one quarterturn.Withplungerin
ghtfromsocket.
utsideofvehicle.Pullplunger
e)tolengthoftraveland turnto
sintoplace.Releaseplunger.
ENCH,open-end,IWin.
.
rtosponsonandr emovecover.
reswireconduitto lightandpull
hichsecureslightto hull,tiplightslightly
ut.
RENCH,open-end,lV4-in.
lytowardfrontofvehicleandinsert
mountingnut(IV^-in.open-end
tand tightenknurlednut.
inginsponsonand securewith
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
410/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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warningindicators
ateretainingscrews
teretainingscrews
t
ch
catorO
*
onoiltemperaturegage4,
t;
onoiltemperaturegageselectorO>
ectorswitch
arningindicator
h
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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H,open-end,V2-in.
elighttorigidconduit.Remove
ghtcover(screwdriver).Remove
elightswitch(screwdriver).Remove
ndswitchshell(screwdriver)andlift
htoshellandseparate.
H,open-end,V2-in.
ewith mountingnut.
.
dsecurewithtwo attachingscrews.
handsecurewithscrew.Install
twoscrews.Connectrigidconduit
nut.
DINSTRUMENTS.
iningtotheoperationoftheve-
entbox(fig. 166),locatedinfront
strumentsare mountedonthein-
ovable,beingheldinplaceby six
ionofthespeedometerandtach-
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
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movethecoverfromthebox,before
peedometerandtachometercanbe
ver,directlybehindeachinstru-
sandnuts.Inorder toeliminate
allationof thevariousinstruments,
einstrumentbox coveriscovered
below)andunder"CoverInstallation"
ncestoright,left,upperand lower,
uswireswheninstallinginstrumentsin
the locationsasshowninfig.168.
eknurlednutson eachofthe
ectorstoseparate.
ewsandliftassemblyfromhull.
.
withthesixcapscrews.
orsintosocketinbackofinstrument
or)andpressinto socket.NOTE:When
etoalinethekeywayinconnectorwith
table
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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ews.
crewsandremovefromcover(screw-
entBox.
uresthespeedometerresetcableto
corneroftheinstrumentbox(turn
bleconduitto therightandoutof the
yfrombox.
bleinPositiontoInstallCover.
ening incoverdirectlybackof
mallholeinrubber grommetandinsert
ox.
ingininstrumentbox andslideflange
UTION:Besurethatall wiresareinside
n,toeliminateanydangerof cuttingthe
tboxwithsixcoyerattachingscrews.
(fig.166)isamagnetictypeand
nectedtoanadaptermountedonthe
he vehiclespeedinmilesperhour,as
andaccumulatedmileage.Aresetknob,
righthandcornerofthe instrumentbox,
rbyaflexiblecable,permitsresetting
ORESETASDESIRED.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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V2-in.
V2-in.
boxandremovethethreenuts which
entbox,directlybackofspeedometer
nutwhichsecuresspeedometerreset
mofinstrumentbox,attheright hand
andoutof theslottedbracket(pliers).
eopeninginthecoveron backofin-
etfromcable.Pullcoverawayfrom
ox.
socket,3/8-in.
mentboxandremovethetwonuts
cketwhichsecuresspeedometerto
nscrewnut,incenterofspeedometer,
dometer(adjustablepliers).Push
gincoverandremove.
V2-in.
r.
sincoverand instrumentboxand
throughopeninginboxand place
ndsecurewiththe twolockwashers
/8-in.socketwrench).
eningin instrumentboxbackcover
rtingsquareendofcablein openingin
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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thenutonendof cablehousingontothe
meter.Tightennutsecurely.
sand securewiththeself-locking
trubbergrommetinopeningin cover
onduitpassingthroughsmallholein
uitintoslottedbracketonlowerside of
ecureto bracketbytighteningknurled
V2-in.
omTransmission(fig.9).
reshousingtoadapteronright side
ratehousingfromadapter.
omInstrumentBox.
V2-in.
)).Reachthroughopeningin
ewknurlednut,incenter ofspeedom-
gtospeedometer.
ndwithdrawcablefromspeedometer
mecableisto bereinstalled,bevery
dirt
akesure cableisfreeofsharp kinks.
sertoppositeendinhousing,rotating
ghhousingthefulldistance.
eedometer.
all openinginbackcover,insertsquare
nspeedometer,installknurlednutand
nbackof instrumentbox(par.166.,d.,
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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nsmission(fig.9).
centerofadapter,installknurlednut
usedtoregisterpowerunit revo-
ncorporatedinthesameunit records,
revolutions(fig. 166).Itisdrivenby
ngtothetachometerdriveonthedis-
.20).
V2-in.
boxandremovethethreenuts which
trumentbox,directlybackoftachometer.
tbox.
finstrumentboxandunscrewknurled
eroftachometer.
InstrumentBoxCover.
finstrumentboxandremovethe two
rethemountingbrackettotachometer,
ontofinstrumentboxcover.
socket,y8-in.
mentBoxCover.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
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ngininstrumentboxcover(fromfront
hthroughopeninginbackof instru-
cketoverthetwostuds intachometer
washersand nuts.Tightennutsse-
ughsmallopeningin thesmallcover
umentbox,insertthe squareendof
gincenteroftachometerandsecurethe
rwithnut.Tightennut securely.
singandplacein positionoverthree
threeself-lockingnuts.
IV8-in.
omNo.1Engine(fig.20).
1Vs-in.
oors,wheredoorsoverlapandopen
ors(li/8-in.wrench).Unscfewknurled
ometeradapterondistributorendof
Slideknurlednut awayfromendof
romendofcable(if soequipped).
omInstrumentBox.
V2-in.
umentbox(par.167.,b.,(1),(a)).
mentboxandunscrewknurlednutwhich
meter(adjustablepliers).
ndwithdrawitfromtachometerendof
leistobereinstalled,be verycareful
withdirt.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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akesure cableisfreefromsharp
nd insertoppositeendinhousing,forc-
ce.
trumentBox.
all openinginbackcover,insertend
nteroftachometerandsecurehousing
hometer.
.,(1),(c) ).
.1 Engine(fig.20).
IVs-in.
ofcable(whereso equipped),insert
meteradapterandsecurehousingto
owerunitcompartmentreardoorsand
rench).
kismountedonthe leftsideof
ld inplacebyamountingclampand
ngand resetting,protrudesthroughthe
urnknobclockwise.Toresetclock,push
y.
tsandunscrewnutsfromstuds.
udsandwithdrawclockfromfront
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
421/480
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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strumentboxcover,alineproperly
hetwostuds.Securemountingclamp
placebypassinglockingwirethrough
endsofwiretogether.
GE.
egage,mountedatthelowerleft-
cover,registersthe temperatureof
din thetransmission(fig.166).Itworks
tmountedon thepowerunitscavenger
and 35)andasimilarunit mountedon
tube(fig.100).Selectionfortherespec-
rationof theTowerUnitandTrans-
electorSwitch"(fig.166).
unitand transmissionoiltem-
.166)towardsidelabeled"ENG."and
etemperatureofpowerunit oil.Push
ide marked"TRANS."andnoteread-
atureoftransmissionoil.
h(fig.168).
alpostsandlift wiresoffposts.
ethetwomountingclampstogage,
andwithdrawgagefromfrontofin-
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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xCover.
ver,alineproperly,placemounting
dsandsecurewith twolockwashers
upperterminalpostand securewith
e,whichleadstoselectorswitch,over
thself-lockingnut.
reGageSelectorSwitchRemoval.
RVER
entBoxCover.
h,wherebossofswitchprotrudes
ersandwithdrawswitchfrombackof
ethethreewiresfromswitch.
eGageSelectorSwitchInstall
RVER
168).
screwsfromthethreeswitchter-
nabovethe openingininstrumentbox
hicharemountedoffcenteron the
regage.Connectthelargewhitewire,
andsecurewithscrew.Connectthe
heleft terminalandsecurewithscrew.
e centerterminalandsecurewithscrew.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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BoxCover(fig.166).
omswitch,insertswitchthroughopen-
andpositionswitchsothatthe threeter-
nterontheswitch)are neartheoil
overbyinstallingthe knurlednuton
whichprotrudesthroughcover.Hold
securely.
ageSendingUnit.
nitismountedonthe scavengeroil
casetopowerunitoilcooler(fig. 35).
RATUREGAGESENDINGUNITRE-
en-end,1-in.
Hull(par.52.,b.,(7) ).
Tube(figs.35 and37).
en-end,1-in.
onendofunit (screwdriver),sepa-
enterofsendingunit .Unscrewunit
wise)(1-in.open-endwrench).
RATUREGAGESENDINGUNITIN-
en-end,1-in.
be.
en-end,1-in.
gcompoundandscrewsendingunit
hichfacestowardcrankcase(figs.35
nsecurely(1-in.open-endwrench).
end ofwireintoopeningincenter of
unitandsecurewithtwoscrews
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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connectionforoilleaks.
.,a.,(41) ).
PERATUREGAGESENDINGUNITRE-
n.
gUnit(fig.100).
thescrewsandremoveshieldfrom
ypullingon wire.
g.100).
counterclockwise).
PERATUREGAGESENDINGUNITIN-
n.
compoundandassembleunit in
nsmissionoillineoutletconnection(fig.
erofunitandpush allthewayinto
e).Bendwire soastofit inopening
dandsecurewiththreescrews.
edatlowercenterofinstrument
nthecircuit.It isconnectedthrough
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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fingers(topreventturningof
rsandwithdrawunitthroughface
6).
over(fromfaceofcover)andposi-
reachmountingstud onunitand
neach stud.
)overthe terminalpostandsecure
near terminalpostwithfingers(topre-
nnutsecurely.
catestheamountofcurrentin
gingfromthebattery.Theamountof
epowerunit speedandelectricalunits
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
-
7/28/2019 TM 9-754 M4A4
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thfingers (topreventturningof
hichsecurethe twowirestoterminal
swhichsecurethemountingclamps
nitfromfrontofcover.
over(fromfaceofcover)andposi-
reachmountingstud onunitand
neach stud.
ed "A")overright-handterminal
fingerstoholdwirein place.Placethe
erleft-handterminalpost andscrew
utin place.Holdwirewithfingersin
withmountingstud orotherinstru-
ageregistersthe pressureofthe
system(fig.166).Itis connectedto,and
edonthe undersideofNo.4engineand
4engine(onpowerunitsequipped
ig.24).On powerunitsequippedwith
ismountedontheupper sideofNo.3
lleryof No.3engine(fig.23).Con-
ontheengine andtheoilpressure
ectrical.
M
P u b l i c D o m a i n ,
G o o g l e - d
i g i t i z e d / h t t p : / / w w w . h a t h i t r u s t . o
r g / a c c e s s
_ u s e # p d - g
o o g l e
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thfingers (topreventturningof
hichsecurewires toposts.
sherswhichsecuretheclampsto the
andwithdrawunitfromfrontofcover.
fromfaceofcover)andpositionin
clampsoverthemountingstudsonunit
andnuts.
d"H"),whichentersloomnearspeed-