Chrysler C-67 User manual

386—STEERINGCHRYSLERSERVICEMANUAL
MANUALSTEERING
DATA AND SPECIFICATIONS
MODELS
KingPinDiameter
KingPinBushings(ManualSteering)Type
Upper
Lower
KingPinBushings(PowerSteering)Type
Upper
Lower
DimensionsofLowerBushings
InsideDiameter
OutsideDiameter
Length
ReamAfterInstallation
C-67,C-68,C-69,C-70
.7953in.
NeedleTypeBearing
Bushing
FloatingBushing
FloatingBushing
.787to.789in.
.823 to.825in.
1.195to1.205in.
.7960to.7975in.
COAXIALPOWERSTEERING
MODELS
FluidCapacityofHydraulicSystem
FluidCapacityofWormHousing
TypeofFluid
MaximumPumpPressure
MaximumFluidFlowat 3,000 R.P.M
MaximumPumpRotorClearances:
BetweenRotorLobes
BetweenOuterRotorandBushing
C-67,C-68,C-69,C-70
2qts.
lpt.
AutomaticTransmissionFluid,
TypeA
750to800psi.
2gal.(Minimum)
.008in.
.006in.

CHRYSLERSERVICEMANUAL STEERING—387
COAXIALPOWERSTEERING(Cont'd)
EndClearance(BetweenRotorsand
FaceofBody)
FlowControlValveSpring
FreeLength
WorkingLength
ForceatWorkingLength
PressureReliefValveSpring
FreeLength
WorkingLength
ForceatWorkingLength,
FrontEndAlignment
SteeringGearRatio
PistonRodSnapRingGap
(UpperandLower)...
.001 to.002in.
2.13in.
1.20in.
14lbs.± lVolbs.
1.51in.
1.18in.
30to33lbs.
16.2:1
2%4in.
SPECIALTOOLS
MANUALSTEERINGGEAR
ToolNumber
C-143
C-328
C-611
C-3428
C-619
C-630
ToolName
Puller-—SteeringArm
Bushing—KingPinRemover
Bushing—EccentricAdjusting
Puller—SteeringWheel
Bushing—EccentricAdjusting
Reamer—PilotBushing

388—STEERING CHRYSLERSERVICEMANUAL
COAXIALPOWERSTEERINGGEAR
ToolNumberToolName
C-760Pliers—GearSnapRing—StraightType
C-3102Gauge—HydraulicPumpandGearChecking
C-3106Pliers—GearSnapRing—RightAngle
C-3107Wrench—AdjustableSpanner
C-3108Studs—(Pr.)PowerCylinder
C- 3109Spacer—AligningUnitInChassis
C-3112Puller—SteeringGearTubeCouplingAdaptersforC-293Puller(C-3145
CoversC-3112PartsandC-293PartsRequiredToPullCoupling)
C-3113Driver—SteeringGearShaftOuterBearing
C-3114Driver—SteeringGearShaftInnerBearing
C-3116Pilots—(Pr.)ReservoirInstalling
C-3117Plug—OilPumpReturnHole(Tapered)(Small)
C-3128Pliers—PumpShaftRearBearingRing
C-3129Driver—PumpOilSealandBearing
C-3130Thimble—Protector—PumpOilSeal
C-3136Sleeve—ShaftOilSealInstalling
C-3137Remover—ShaftOilSeal
C-3141Driver—ValveBlockAdjustingPinRoller
C-3142Driver—SteeringGearShaftInnerSeal
C-3143Driver—SteeringTubeOilSealInValveBodyCap
C-3189Plug—OilPumpReturnHole(Tapered)(Large)
C-485, C-524or C-3005.. Wrench—Foot-PoundTorque
C-612Puller—SteeringWheel
C-685orC-3380Wrench—Inch-PoundTorque
SP-2623PullerScrew—ForUseWithC-143Puller(PreviouslyReleased)
C-3185Remover—PumpShaftBushingsandSeal
C-3211Hose—HighPressureP/STest
C-3214Puller—MainBearing

CHRYSLERSERVICEMANUAL STEERING—389
COAXIALPOWERSTEERINGGEAR(Cont'd)
ToolNumberToolName
C-3227Wrench—FlangeHolding
C-3228Thimble—ShaftOilSealProtecting
C-3229Pliers
C-3230Driver—ShaftOilSealInstalling
C-3233Driver—ShaftBushingInstalling
C-3234Adapter—ForusingC-3214Puller
C-3250Pliers—HoseClamp
C-3251Driver—MainBearingInstalling
C-3309Gauge—OilPump,pressurechecking
C-3317Driver—WormHousingOilSeal
C-3318Hose—LowPressureP/STestW/adapters
C-3319Nut—WormShaftHolding
C-3320Wrench—WormShaftBearingAdjustingNut
C-3321Wrench—WormConnectorHolding
C-3322RemoverandInstallerWormHousingBearingCups
C-3323Fixture—GearAssemblyHolding
C-3328Spanner—UpperPistonRodNut
C-3329Thimble—ValveControlSpacerSealInstalling
C-3331Driver—HousingHeadandGearHousingSeal
C-3333Driver—RemoveandInstallGearShaftBearing
C-3344—SP-2604Installer—PistonandRingAssembly
C-3350RemoverandInstaller—GearShaftOilSeal
C-3437Protector—LowerPistonRodSeal
C-3392Wedge—CouplingRemoving—(NotRequiredIfC-3112IsAvailable)
C-3398RemoverandInstaller—GearShiftRodBushings
C-3399Tool—ShifterDialBulbRemovingandInstalling
C-3401Thimble—GearshiftAdjustingScrew"0"RingInstalling
C-3469Flange—UpperHousing—UsedForPretestingforHydraulicLeaks

390—STEERINGCHRYSLERSERVICEMANUAL
TIGHTENINGREFERENCE
MANUALSTEERING
Foot-Pounds
SteeringGeartoFrameBolt50
SteeringGearArm(Pitman)LockBoltNut.80
SteeringKnuckleTieRodClampBolt15
SteeringGearMountingBracketBolts50
SteeringWheelNut40
SteeringKnuckleTieRodEndBallNut75
IntermediateSteeringArmPinNut50
POWERSTEERINGGEARASSEMBLY
Foot-Pounds
PumpBodytoCoverBolts30-35
PumpReservoirtoPumpBodyBolts12-17
PumpMountingBolts18-23
PumpReservoirMountingStud30-35
SteeringKnuckleArmNuts(BrakeAnchorNuts)55-75
SteeringGearArmtoShaftNut100-125
SteeringArmtoTransverseLinkNut50-55
SteeringGearAssemblyMountingtoFrame65-70
SteeringWheeltoSteeringShaftNut35-40
JackettoInstrumentPanelScrews15-20
TieRodClampBolts10-15

CHRYSLERSERVICEMANUAL-STEERING—391
POWERSTEERINGGEARASSEMBLY(Cont'd)
Foot-Pounds
TieRodtoSteeringKnuckleArmNuts45-75
PumpCouplingAttachingScrew15-20
PumpFlowControlandRelief Valve Adapter(Retaining)45-50
PumpCouplingFlangeAttachingScrew10-12
UpperPistonRodNut25-30
BallGuideClampScrews10-12
WormHousingtoGearHousingScrews25-30
GearShaftAdjustingScrewLockNut35-40
RESERVOIR
ThreadSizeFoot-Pounds
ReservoirCoverBolt%6x 248
ReliefValveAssemblyCap1x88
HoseConnectorInlet% x 1830
PUMP
ThreadSizeFoot-Pounds
PumpAssemblyBolt%6x 1820
HoseConnectorOutlet% x 1830
By-PassPlug% x 1650
ReliefValvePlug1x 1450
FlowDividerValvePlug1%x 1250
94e DrainTubeNut% x 24*y2to% Turn
or6 to10
*Thenumberofturnsspecifiedisafterinitialfingertightening.

392—STEERINGCHRYSLERSERVICEMANUAL
KNOB
COVER
SCREW
GROMMET
JACKET
INSULATOR
SWITCH
BRACKET
LEVER
GROMMET
WASHER
WASHER
OIL SEAL
WASHER
LOCKWASHER
NUT
NUT
OILSEM'^J^\\
BUSHINGS<^T% \ *
CUP
CAGE AND ROLLERS
TUBE AND WORM
CAGE AND ROLLERS
OIL SEAL
SHIMS
NUT
54x677 A
Fig. 1—TypicalSteeringGear(ExplodedView)

CHRYSLERSERVICEMANUALSTEERING—393
Section X
STEERING
(SEEFIG. 1)
1. LINKAGE
Thesymmetricalidlerarmtype of steering, as
shown in Figure2, is usedon all models. A cen-
terlinkrelaysthemotionfromthePitmanarm
toanidlerarmatitsoppositeend.Theidlerarm
ismounted ona bracketattached tothe frame.
Twoequallengthtierodsconnectfromthecen-
terrelaylinktothesteeringknucklearms.Both
tierods are threaded for proper toe aligning
adjustment.
2. STEERINGGEAR(THREE-TOOTHROLLER
ANDWORM)(Mechanical)
Athree-toothroller is mounted on needleroller
bearingson a steelcross-shaftinsertedthrough
thesteeringgearshaft.
Theworm is integralwith the steeringtube
and is supported at each endby taperedroller
bearings.Thewormbearingpre-loadisadjusted
bymeans of shimsplacedbetween the housing
andhousingendcover.Thesteeringgearshaft
rotates in twobronzebushingspressedinto the
steeringgearhousing. The three-toothroller
on the shaft is meshedwith the worm.When
thesteeringwheel is turned, the wormrotates
thesteeringgearshaft and roller,moving the
Pitmanarm,which is splined tothe end ofthe
shaftandheld in placewith a nut.
Backlashbetweenthesteeringgearshaftrol-
lertoothand the worm is controlled byanad-
justingscrewthatisthreadedthroughtheshaft
androllercover.Thebaseend of theadjusting
screw is engaged ina slot intheendofthe
steeringgearshaft.Correctbacklash canbe
TIE ROD ENDS-INNER
CENTERLINK
IDLER ARM
STEERINGGEAR
STEERINGKNUCKLE
ARM-RIGHT
TIE ROD END-OUTER
STEERINGKNUCKLE
ARM-LEFT
STEERINGGEAR ARM
55x5
Fig. 2—IdlerArmTypeSteeringLinkage

394—STEERINGCHRYSLERSERVICEMANUAL
obtainedbyturningtheadjustingscrewinor
out,asrequired.
ThesteeringwheelandPitmanarmare
splinedtothesteeringtubeandsteeringgear
shaft,respectively.Boththesteeringwheeland
thePitmanarmhavemasterserrationstoin-
surecorrectinstallation.
Thehighpointisthepointofleastclearance
betweenthewormandrollerandisatthemid-
pointofthewormandrollertravel.
Anoilsealisinstalledintheboreofthe
steeringgearhousingattheouterendofthe
shafttopreventoilleakageandtokeepforeign
materialfromenteringthesteeringunit.
3. REMOVALOFSTEERINGWHEEL
ASSEMBLY
Disconnectbatteryandcenterthesteering
wheelinthestraight-aheadposition.Pressdown
onthehornblowingringornamentandturn
counter-clockwise.Liftoutornamentretaining
springandpad.Disconnecthornwirefromter-
minalontravelplateandinsulatorassembly.
Removebushing,travelplate,hornblowingcon-
tactringspring,andtriangulargroundplate.
Curlandpushhornwireintothesteeringgear
tubetomakeroomforsteeringwheelpuller
pilot.Removethesteeringwheelnut.Attach
pullerandremovesteeringwheel.
4. REMOVALOFSTEERINGGEAR
ASSEMBLY
Itisnotnecessarytoremovethecompletesteer-
ingcolumnandmastassemblyfromthecarfor
servicingthegearchuckandwormshaft.To
removethegearchuckandwormshaftassem-
blyproceedasfollows.Disconnectthebattery,
pressdownonthehornringornamentwhilero-
tatingit,andremoveornament.Removesteer-
ingcolumnwormshaftnut.Pullsteeringwheel
withpuller.Loosenjacketbracketboltsatin-
strumentpanel.Removedustpadretaining
screws.Raisefrontofcarandremovesteering
gear(Pitman)armfromgearshaft.Loosen
jackettogearchuckclampbolt.Removegear
chucktoframeattachingboltsandworkgear
chuckandshaftassemblyoutofjacket.Remove
assemblyfromlowersideofcar.
5. DISASSEMBLYOFSTEERINGGEAR
(UnitRemovedFromCar)
TodisassembletheManualSteeringGearAs-
sembly,proceedasfollows:
Drainlubricantfromthesteeringgearhous-
ing.Mountthegearassemblyina suitablebench
vise, holdingtheassemblybythehousingto
chassismountingflange, withthesteeringcol-
umninthehorizontalposition.Removetheshaft
coverattachingcapscrews,cover,gasketand
steeringgearshaft,androllertoothassembly.
Loosenthecolumnjacketclampbolt,pry
openclampandremovecolumnjacketfrom
steeringhousing.Removesteeringworm,lower
oilsealhousingcoverbolts,coverandshims.
Pullsteeringtubeandwormassemblybearing
cupsandbearingcagesoutofthelowerendof
steeringhousing.
Cleanthesteeringgearhousingshaft,bear-
ingsandotherpartsthoroughlywitha suitable
cleaningsolvent.Inspectrollertoothshaft, shaft
serrations,bearings,bearingcups,oilseals,
wormandtubeforwear,nicksandflat spots.
Replacewithnewpartsasnecessary.
Removerollertoothassemblyshaftcover
adjustingscrewnutandlockingplate.Check
adjustingscrewthreadsincoverandonthe
adjustingscrew.Replaceifnecessary.
6.ASSEMBLYOFSTEERINGGEAR
(UnitRemovedFromCar)
NOTE
When the steering gear assembly is disassem-
bled, it is always advisable to install new seals
and gaskets to insure against oil leaks.
Ifeitherofthewormthrusttaperedroller
bearingshavebecomedamaged,itisadvisable
toreplacebothbearings.Afterthoroughly
cleaningallparts,assemblethepartswithout
anylubrication.Lubricationshouldbedone
aftertheadjustmentshavebeencompleted.If
bushingsorneedlebearingshavebeenremoved,
pressnewbushingsorneedlebearingsinto
place.Usenewoilseals.
Insertthewormandtubeintothehousing
withbearingsandcupsintheproperorder,as
showninFigure2.Installtheshimsandlower
housingcover,makingsurethatbearingsare
seatedincupsbeforetightening screws. Tighten
thecoverscrewsevenly,turningthewormtube
atintervaletobesurenobindoccurs.Final

CHRYSLERSERVICEMANUALSTEERING—395
tighteningofthescrewsshouldcausetheend
playtojustdisappear withthetorquerequired
torotatethewheelfrom% to% ofa pound,
whenmeasuredwiththepullappliedatrimof
wheel.Ifa bindintherotationofthetubeoccurs
whenthecoverscrewsarefullytightened,it
willbenecessarytoaddshimthicknessuntil
bindjustdisappears.Ifendplayispresentafter
final tightening,lessshimthicknessisrequired.
Shimsareavailablein.003,.006,.011and.025
inch.Byusing a micrometertomeasureshims,#
thepropercombinationcanbechosen.
RefertoFigure2 and3.Installtheroller
shaftbearinginthehousing.Beforeinstalling
thecover,turn.theadjustingscrewalltheway
out(counter-clockwise).Whentherollershaft
assemblyiscompletelyinstalled,withtheex-
ceptionofthePitmanarm,adjustasfollows:
Placethesteeringwheelonthetubeandro-
tatethewheelineitherdirectiontotheendof
itstravel.Then,rotateintheoppositedirection
totheendoftravelwhilecountingtheturns.
Rotatethewheelback1/2thefullnumberof
turns. Thisisthecenteroftravel(mid-travelor
highpoint).Turntheadjustingscrewin(clock-
wise)untilallendplayintherollershaftdis-
appears.Rollthewheelbackandforthseveral
times. Thereshouldbenobind.Rotatethewheel
tooneoftheendsoftravelandapplya spring
scaleortorquewrench.Withthepullapplied
attherimofthewheel,thetensionshouldmea-
surefrom1 to2 pounds.Rotatethewheelback
tothecenterandonpastthecenterposition.
Thegreatesttensionshouldbefeltasthewheel
isrotatedthroughthecenterposition.Adjust
thebearingloadbyturningadjustingscrewin
oroutofthecover,asrequired.Installlock
plate,nut,andPitmanarm.Fillthegearhous-
ingwithSAE90FluidGearLubricant.Rotate
thewheelbackandforththroughitsfulltravel
severaltimestobesureallpartsarefullylu-
bricatedandcheckforleaks.
7. ADJUSTINGWORMBEARINGS(InCar)
Rotatesteeringwheeltoextremerightorleft
andturnback% turn.Pressa finger atjoint
betweenbottomofsteeringwheelhubandshell.
Haveanothermechanicshakethefrontwheels
hardsideways,butnotenoughtoturnsteering
wheel.Anyendplayinwormbearingscanbe
feltatsteeringwheelhub.Thereshouldbeno
endplayatthe hub. Endplayshouldnotbecon-
fusedwithclearancebetweentherollerand
worm.Ifanyexcessiveendplayexists,remove
thesteeringgeararm,drainthehousing,and
disconnectthehornwireatconnectorbetween
steeringgearandhorn.
Removecap screwswhichholdgreaseretainer
coveratbottomofsteeringgearhousing.Re-
moveshimsofsufficientthicknessbetweenthis
coverandhousingtoeliminatetheendplayin
worm,butnotenoughtocausebindingwhen
coverisboltedtightlyinplace.Turnsteering
wheelfromextremerighttoleft.Ifany stiff-
nessexists,toomanyshimshavebeenremoved,
orthesteeringgearassemblyismisalignedon
car.
8.INSTALLATIONANDALIGNMENTOF
STEERINGGEARASSEMBLY
a.Installation
Wheregearchuckandwormshaftassemblyhas
beenremovedforservice,installasfollows.
Raisefrontofcar,insertwormshaftintojacket
andmovegearchuckassemblyupintoposition.
Itmaybenecessaryforanassistanttoguide
thetopofthewormshaftthroughtheupper
jacketalignmentbearing.Installgearchuckto
bracketattachingboltsandtightenforward
bolttoa snugfit. Lowercartofloor. Centerthe
jacketintheinstrumentpanelandtighten
bracketbolts.Installandtightendustpadre-
tainingscrews.Installsteeringwheelhornring
andornament.Raisefrontofcar.Tightenat-
tachingbolts.Installsteering(Pitman)arm
andtightennut.
b. Alignment(AllModels)
Aslightbindofthesteeringgearissometimes
causedbyshiftingofbodyduetoloosenedbolts.
Ifthisconditionoccurs,bodyboltsshouldfirst
betightened.Then,thesteeringgearshouldbe
loosenedatframe,framebracketanddash
bracket,andallowedtoseekitsnaturalposition.
Positionthecenterofsteeringcolumnincen-
terofinstrumentcluster.Ifthiscannotbeac-
complishedbytheshiftingoftheframebracket,
asprovidedforbytheoversizeandelongated
mountingscrewholes,itwillbenecessaryto
addmetalwashershimsbetweentheframeand
framebracket.Tightendashbracketandtight-
ensteeringgeartoframe.

396—STEERINGCHRYSLERSERVICEMANUAL
NOTE
Be sure the body to frame bolts are tight and
the spacers are in place. With the body bolts
tight, loosen the gear housing mounting bolts
to allow the steering gear to move in relation
to the frame. Tighten the mounting bolts to
50 foot-pounds torque. Loosen the steering col-
umn bolts that hold column to instrument panel
to determine if the column shifts its position in
relation to the support.
9.ADJUSTMENTOFROLLERTOOTHAND
WORM(InCar)
Endplayofsteeringarmshaftandmeshof
rollertoothwithsteeringwormmaybeadjusted
asfollows:
Removesteeringgear(Pitman)armfrom
shaftandinstallanotherarmformakingad-
justments.Turnsteeringwheeltomid-position.
Thisisobtainedbyturningwheeltoextreme
rightorleft,andthenturningittooppositeex-
treme,countingnumberofturnsrequired.Turn
steeringwheelback1/2thenumberofturnsre-
quiredforturningitfromoneextremetothe
other.Withsteeringwheelinmid-position,
attempttomovesteeringgeararmbackand
forthtodeterminewhetherornotthereisany
backlash.Thereshouldbenobacklash.Butif
backlashexists,therollertoothandworm
shouldbeadjusted.
Removerollertoothshaftadjustmentscrew
locknut.Slideofflockplatefarenoughtoclear
lockbossonrollertoothshaftcover.Tighten
rollertoothshaftadjustingscrew(Fig.3)
enoughtoeliminatefreeplaybetweenroller
toothshaftandworm;but,itmustnotbind.
Slidelockplateinpositionagainstrollertooth
shaftcoverandlockit.Installandtighten
rollertoothshaftadjustmentscrewlocknut.
Checksteeringgearoperationagainforbinding
andbacklash.Correctanyinaccuraciesinad-
justments.Installsteeringgeararmwithtie
rods.
10. SERVICINGIDLERARM
Serviceoftheidlerarmisrestrictedtoreplace-
mentandadjustment.Whenreplacingtheidler
arm,disconnecttherelayrod(centerlink)from
theidlerarm.Removethebracketattaching
screwsfromthebracketandframeandremove
WORMBEARINGADJUSTINGSHIMS
ADJUSTINGSCREW
ADJUSTINGSCREW
LOCKPLATE
-LOCKPLATE NUT
Fig. 3—SteeringGearAdjustments54x46
theidlerassembly.Screwthenewidlerarm
intothebracketuntiltheshoulderonthearm
contactsthefaceofthebracket.Turnarmout
ofbracketonecompleteturn.Itmaybeneces-
sarytorotatethearmslightlytolineupthe
bracketforinstallingattachingbolts.
11. REMOVALANDINSTALLATIONOF
STEERINGKNUCKLETIERODS
Removecotterpinandloosennutonupperend
oftherodball.WithToolC-3394,removetie
rodfromsteeringarm(Fig.4).Tierodballs
arenotremovablefromtierodends.Ifreplace-
mentofeitherisnecessary,thecompletetierod
endandballassemblyshouldbereplaced.Loosen
clampingboltnutonthetierodend.Unscrew
tierodendassemblyfromtierod.
Whenassemblingtierodendstotubebody,
besuretothreadtheendsevenlyontubebody
tothenominallengthlistedinDataandSpeci-
fications.Thisisnecessarytoobtainproperposi-
tioningofthesteeringwheelwithrespecttothe
straight-aheadpositionofthefrontwheels.
Caremustbetakentomakecertaintheclamp-
ingboltsarebeneaththetierodstoprevent
interferenceonturns.
12. ADJUSTMENTOFFRONTWHEEL
BEARINGS
Afterremovingthehubcapandthegreasecap,
removethecotterpininthebearingadjusting
nutattheouterendofthesteeringknuckle

CHRYSLERSERVICEMANUALSTEERING—397
STEERINGKNUCKLE ARM
Fig. 4—RemovingTieRodFromSteeringKnuckleArm
(ToolC-3394)
(wheelspindle).Turnbearingadjusting nut
(Fig. 5) handtight.Turnadjusting nut back
oneslot.Turn thenut backuntilslotnearest
cotter pin holecentersover hole and install a
newcotterpin. The bearing nut threadsmust
be in goodconditionandthecotterpinproperly
installedandspread.Alwaysusenewcotterpins.
13. RECONDITIONINGFRONTWHEELHUB
ANDDRUMASSEMBLY
Raisefront endofcar untilwheel isoff floor.
Removehubcap.Removewheelhubbolts.Bolts
onleftwheelshaveleft-handthreadsandthose
onrightwheelshaveright-handthreads. Re-
movewheel hub grease cup (snaptype)with
specialToolC-438, orby pryingwith a screw
driver and tappingwith a lighthammer. Re-
movethreadedtype by unscrewing cap from
hub. Removecotter pinand unscrewfront
wheelbearingadjusting nut. Removeouter
bearingandpullhub off steeringknuckle. Itis
notnecessary to removewheelfromhub if hub
is to beremovedfromsteeringknucklespindle.
Wheelandhubmay be removed asa complete
unit.Inspect oil seal and replace if necessary.
Beforeinstallingfrontwheel huband bear-
ingassembly,removelubricantfrom thehub
andbearingsandmakesureparts arein good
condition.Installinner and outerbearingcups
sothere isno clearancebetweenthehubshoul-
ders. PackbearingswithShortFiberWheel
BearingLubricant(Medium).Wheninstalling
the oil seals,makecertainthat the sealflange
bottomsonthebearingcup.
14. REMOVALANDINSTALLATION OF
STEERINGKNUCKLEKINGPINSAND
BUSHINGS
NOTE
Should servicing of the steering knuckle be nec-
1—Bearing nut
2—Bearingthrustwasher
3—Outerbearingcup
4—Hub
Fig. 5—FrontWheelBearings
5—Innerbearingconeandrollers
6-Hubdustseal
7—Hubcap
8—Greasecap
°—Bearingnutcotterpin
10—Outerbearingconeandrollers
11—Steeringknuckle
12—Innerbearingcup

398—STEERINGCHRYSLERSERVICEMANUAL
Fig. 6—RemovingBrakeSupport
essary, time can be saved by removing the steer-
ing knuckle arm from the steering knuckle.
Remove steering knuckle and brake support as
an assembly. Make necessary repairs on a bench.
If it is done in this manner, eliminate removing
support. Remove brake hose connections, but
leave brake support on steering knuckle. Re-
move unit as an assembly with steering knuckle
after king pin is removed. Always usenew bush-
ings, seals, and pins ivhen servicing the steering
knuckle and support assembly.
Removewheelandhubassembly.Blockbrake
pedal soit cannot be depressed.Removenuts
andboltsthatfastenbrakesupport to steering
knuckle.Removesteeringknuckle arm from
steeringknuckle.Removebrakehose and con-
nectionsandlift off brakesupport(Fig.6).Do
notallowbrakesupportandshoeassemblytobe
supported by flexible brakehose.Removeking
pinlockingpin.
Drive a punchintouppersteeringknuckle
welchplugand pryitoutof steeringknuckle.
Driveking pin downward,forcing out lower
welchplug. A softbrassdriftshould be used
whendrivingagainsttop of kingpin.Remove
steeringknuckleupperneedlebearing or bush-
ing by pulling it towardcenterknuckle,using
special tool, asshowninFigure 7. Removesteer-
ingknucklelowerbushing. If bushing isof the
stationarytype,usespecialtooltoremove it.
Theupperneedlebearingmust be installed
from topof steeringknuckle,withtrademark
Fig. 7—RemovingKingPinBushingorBearing
1—King pinbushing or bearing2—ToolC-328
attopandoilhole in bearinglined up with oil
hole in steeringknuckle.Stationarytypebush-
ings(Fig. 8) should be line-reamed.First re-
move the upperneedlebearing.Installreamer
pilotbushingToolC-631andreamerToolC-379.
Wheninstallinglower and upperfloating type
bushing(Fig. 9), placeopenend ofoil groove
tothetop.Bothtypes of lowerbushingsshould
49x607
Fig. 8—BearingandStationaryTypeBushing
Installed
1—Bearingidentificationmark3—Lubricantholes
2—Bushingidentificationline or notchA—3/32inch
B-l/16inch

CHRYSLERSERVICEMANUALSTEERING—399
Fig. 9—BearingandFloatingTypeBushingInstalled
1—Bearingidentificationmark
2—Lubricantholes3—Floatingtypebushing
A-3/16inch
beinstalledwithoilholeinbearinglinedup
withoilholeinsteeringknuckle.Oncars
equippedwithPowerSteering,thekingpin
bushingsshouldbeinstalledwiththeopenend
oftheoilgrooveleadingtowardsthe"O"seal
rings.
Afterinstallingthesteeringknuckle,make
sureitisfreeinthesupport.Bindingatthis
pointmaycausesensitivesteeringandcarwan-
der.Thereshouldbe.006to.008inchclearance
betweenthesteeringknuckleandtheknuckle
support.Thisclearancecanbeadjustedbythe
STAKEINPLACE
ASSHOWN
STAKESECURELY
4PLACESAS
SHOWNBOTH
ENDS
49x701
Fig. 10—WelchPlugandKingPinLockPinInstalled
useofshimsbetweenthesteeringknuckleand
thethrustbearings.
Wheninstallinga welchplug,itisnecessary
tostakeitafteritisproperlyinplace,asshown
inFigure10.
Beforeinstallinghubanddrumassembly,
performMajorBrakeAdjustment,described
inSectionIII,Brakes,asappliedtocars
equippedwithManualSteering.Afterinstall-
inghub,drumandwheelassembly,checkking
pininclination,caster,camber,andtoe-inor
toe-out,asoutlinedinFrontWheelAlignment
inthisSection.Adjustbrakes.
COAXIALPOWERSTEERING
15. DESCRIPTION(Fig.11)
TheCoaxialPowerSteeringUnitincorpo-
ratestwobasicgearmechanisms,a wormand
wormconnectoranda rackandsectorgear.
Thewormandwormconnectoractina man-
nersimilartoa boltandnutassembly,rotation
ofthewormcauseslinear(axial)motionofthe
wormconnector.Fastenedtothewormcon-
nector,insuccession,areanupperpistonrod,a
piston,anda lowerpistonrod,allconcentricto
thesteeringcolumnaxis.(Thisarrangement
providesa meansforaddingpowerassistance
tothesystem.)

400—STEERINGCHRYSLERSERVICEMANUAL

CHRYSLERSERVICEMANUALSTEERING—401
FLOWCONTROLVALVE(CLOSED)
PRESSURERELIEF
VALVE
HIGHPRESSURE- LOWFLOW
FLOWCONTROLVALVE(OPEN)
PRESSURERELIEF
VALVE(CLOSED)
LOWPRESSURE- HIGHFLOW
•FLOWCONTROLVALVE(OPEN)
PRESSURERELIEF
VALVE(OPEN)
HIGHPRESSURE- HIGHFLOW
53x632
Fig. 12—PumpPressure and Flow
Arack,machined in thelowerportion of the
lowerpiston rod, mesheswith a sectorgear.
Thiscombinationproducesrotationofthesteer-
inggeararmandtherebyactuatesthesteering
linkage.
ThehydraulicsystemoftheCoaxialgearcon-
sists ofa double-actingpiston, a valve(which
fitsinsidethepiston),and a hydraulicreaction
chamber(whichgives the driver the "feel" of
theroad).Axialpositioning of thevalvedirects
highpressureoil to oneside or theother of the
double-actingpiston. At the sametime,valve
movementopensanoilreturnlinewhichcarries
oilfrom the lowpressureside of the piston to
theoilreservoir.Thedirection of oil flow (which
dependsupon the direction of steeringwheel
rotation)issuchthathydraulicforceisaddedto
thedriver'seffortand is transmittedthroughthe
rackandsectorgear tothe steeringgear arm.
Othercomponents of the hydraulicsystem
are, a generator-drivenoilpumpwithpressure
reliefvalve and flow controlvalve, and a filter
with theoil reservoir. The flow controlvalve
limitstheoil flow toa predeterminedmaximu^n
(IV2gallons per minute) and thusholds tHe
horsepowerrequired to drivethe oil pump to a
minimum.
a.PowerSteering Oil Pump,Reservoir and
Assembly
The oil pump and reservoirassembly is
mounted at the rear end of the generator. A
cartridge-typefilter element is located inthe
reservoir.Oilfrom the steeringgearassembly
flows through an internalpassage inthe pump
body,through the full-flow oil filter, and into
thereservoirchamber.From the reservoir, oil
enterstheoilpumpintake(Fig.12).Theposi-
tion of theoilpump is adjustable to helpmain-
tainlevelfluid in reservoirwhendrivebelt is
adjusted.
Asmalldiaphragmventvalve in the reser-
voircoverisforcedopentoprovide a passageto
theatmosphere, if excessivepressureoccurs in
thereservoir.
Withcold oil, insufficient oil wouldpass
through the filter to the reservoir, andtheoil
pressurewouldbuild-up in the linefrom the
steeringgearassembly.Therefore, a spring-

402—STEERINGCHRYSLERSERVICEMANUAL
OUT (LOW PRESSURE OIL)
INNEUTRALPOSITION, THE OPENINGSBETWEEN THE VALVE
ANDVALVEBODYOFFERLITTLEFLOWRESTRICTION SOOIL
PRESSURE ISLOW. EQUALPRESSURE ON BOTHPISTONFACES
HOLDSPISTONSTATIONARY.
(N (LOW PRESSURE OIL)
SPOOLVALVE
PISTON
53x859
Fig. 13—OilFlow—NeutralValvePosition
OUT(LOWPRESSURE OIL)
tWHEN
THE VALVE IS PULLED UP,IT OFFERSFLOWRESTRICTION AT
"A" AND"BM.OIL PRESSUREINCREASESGREATLY,CREATING A HYDRAU-
LICFORCE ON PISTON. AS PISTONMOVES, OIL ENTERS THE HIGH
PRESSURECYLINDER, ANDOILINTHELOW PRESSURECYLINDER IS
FORCED OUT RETURNPASSAGES.
IN(HIGHPRESSURE OIL)
SPOOLVALVE
PISTON
53x860
Fig. 14—OilFlow—RightTurn—ValvePulled Up

CHRYSLERSERVICEMANUALSTEERING—403
loadedreliefvalveisprovidedatthetopofthe
filterelement.Whenoilpressureinthefilter
buildsuptoabout5 to7 psi.,thisvalveopens
andpermitsoiltopassdirectlyintothereser-
voirchamber.
Therotaryoilpumpisdrivenfromtherear
endofthegeneratorarmatureshaftthrougha
flexible coupling.Thesinglerotorinthepump
drawsoilfromthereservoir,anddischargesit
throughthebuilt-incombinationflow control
valveandpressurereliefvalvetothevalvein
thepowerunitassembly.
Inthepowersteeringpump,theflow control
valveandpressurereliefvalvearecombinedin
asingleassembly,asshowninFigure12.The
spring-loadedpressurereliefvalveisconcentric
withandfits insidethespring-loadedflow con-
trolvalve.Whenthepressurereliefvalveis
closed,itseatsagainsta snapringintheflow
controlvalve.Anorificeinthepressurerelief
valveprovidestheoilpressuredropthatcon-
trolstheoperationoftheflow controlvalve.
Whentheoilflow fromthepumptendstorise
abovel1/^gallonsperminute,thedifferencein
pressureacrosstheorificeovercomesthespring
load,andtheflow controlvalvemovestoun-
covera passagetotheintakesideofthepump.
Bypreventingexcessiveoilflow, theflow con-
trolvalvelimitsthepressuredropthroughthe
hydraulicsystemandthuslimitsthehorse-
powerrequiredtodrivethepump.Oilflow of
thepumpwhentheengineisidlingisabout1%
gallonsperminute.
Oilpressureinthehydraulicsystembuildsup
tothatrequiredtoovercometheresistanceto
turningoftheroadwheels.Inotherwords,
straight-aheadhighwaysteeringrequiresa rel-
ativelylowoilpressure,whilea higheroilpres-
sureisrequiredwhenturninga corner.A rapid
build-upofoilpressuretendstooccurwhenthe
roadwheelsareturnedagainsta curborwhen
thesteeringwheelisturnedallthewayinone
directionsothatthepistonreachestheendof
thestroke.Topreventexcessiveoilpressure,
thepressurereliefvalveinthepumplimitsthe
oilpressurefrom750to800psi.
Theentirehydraulicoilsystemforpower
steeringhasa capacityof2 quartsofSAE
10W engine,ortype"A"oil.Thewormhous-
ingcapacityisonepintwhichisseparatefrom
thepressuresystem.
b. HowtheCoaxialPowerSteeringOperates
TheheartoftheCoaxialPowerSteeringUnit
hastwoparts;thevalveandthevalvebody
(actuallya partofthehydraulicpiston,as
showninFigure13).Together,thesetwopieces
controltheoperationoftheentirepowersys-
tem. Whenthedriverturnsthesteeringwheel,
thevalvemoveswithrespecttothehydraulic
piston,andpowerasistanceinstantlyresponds.
Therelativemovementbetweenthevalveand
pistonisveryslight(itseldomexceeIs.0025
inch)andmustnotbeconfusedwiththegen-
eralmovementofthewholestep'ingsystem
asthefrontwheelsturn.Thedrivercontrolsthe
powersteeringunitbygoverningtherelative
movementbetweenthevalveandhydrailicpis-
ton. Controlmovementsarebasedo.feelof
theroadthatcomesthroughthesteeringwheel
froma hydraulicreactionchamberinsidethe
powerunit.Relativemovementofthevalveand
pistonaffectshydraulicactionasfollows:
Asthevalvemovesrelativetothepiston,it
regulatesoilpressureanddirectsoilflow
throughthehydrauliccircuit.Considerthecase
wherethesteeringwheel isnotturnedandthe
valveisinneutralposition,asshowninFigure
13. Inthisposition,thevalveleavesopenings
betweenitandthevalvebodysooilflows
throughtheunitquiteeasilywithverylittle
flow restriction.Therefore,theoilpumphas
onlya slightresistancetoovercome,andtheoil
enteringthepowersteeringunitisunderlow
pressure.
Insidetheunit,theoilreachesthevalve
throughholesdrilledinthepiston.Atthevalve
theflow divides,andoiltravelstowardboth
endsofthevalve.Itflows throughsucceeding
openingsbetweenthevalveandadjacentvalve
bodyuntilitreachesthemainreturnpassage
drilledthroughthelowerpistonrod.Itthen
returnstothereservoirandfilter. Intheneutral
position,oilpressureonbothsidesofthepower
pistonisthesame.Consequently,thepiston
remainsstationary.
Whenthedriverturnsthesteeringwheel,the
valvemoveseitherupordown,dependingon
whichdirectionheturns.Supposethathemoves
thevalveupslightly,relativetothepiston.By
movingthevalvethissmallamount,thedriver

404—STEERINGCHRYSLERSERVICEMANUAL
putsthepowersystemintooperation,asshown
inFigure14.
Theinstantthevalveismoved,twoimpor-
tantthingshappen:(1)theinletoilpressure
increasesbecauseofrestrictedopeningsber
tweenthevalveandvalvebody,and(2)the
increasedpressureisdirectedtoonesideofthe
powerpiston.Therestrictionscausing thepres-
surerisearemarked"AandB"inFigure14.
Thesenarrowspaces"dam up"theoilthatis
beingforcedthroughthesystembytheoil
pump.Becausethepumpisa positive-displace-
menttype,theoilmustkeepmoving.Astheoil
"piles-up"behindtherestrictions,itspressure
increasestremendously,squeezingoilthrough
thenarrowspacesata veryfastrate.Often
therestrictionsmayclosecompletely,giving
operatingpressureatthefastestpossiblerate.
Themaximumpressurebuild-upislimitedto
800psibya pressurereliefvalveinthepump
assembly.
Thehighoilpressureisdirectedtothelower
endofthecylinder(forthiscasethroughthe
passagesindicatedinFigure14).However,the
oppositeendofthecylinderisopentothe
returnline.Therefore,a differenceinpressure
existsineachendofthecylinderandthepiston
moves.Oiltrappedinthelowerpressurecylin-
derisforcedthroughthereturnpassagesas
thepistonmovesup.
Bycarefuldesign,alloftheseelementshave
beencombinedintotwocompactunitswhich
areconnectedbya pairofflexiblehoses.The
powerunitcontainsthepowerpiston,spool
valve,andhydraulicreaction chamber.Tne
supplyunitincorporatesthereservoirandthe
oilpumpwithitsvalves.
Ifthedriverstopsturningthesteeringwheel
andholdsitina fixedposition,thefrontwheels
immediatelystopturning.Thisishowithap-
pens: withthesteeringwheelheld,thevalve
remainsinitspulleduppositionbecausethe
valveismechanicallyconnectedtothesteering
wheel.Thepiston,ontheotherhand,ismoving
upundertheactionofthepressureinthelower
endofthecylinder,andcontinuestomoveup
forthebriefestinstantuntiltherelativemotion
betweenpistonandvalvehasreturnedthemto
theneutralposition.Inneutralposition,there
is verylittle flow restriction,asexplainedbefore,
UPPERPISTONRODCONNECTORNUTADJUSTINGDISCRETAINER
VALVEADJUSTINGDISC
VALVE
OPERATING
ROD
VALVECONTROL
SPACERSEAL
ADJUSTING
TANG
WORM
CONNECTOR
PISTONRODNUTANDLOCKCUP
-SEALRETAINERS53x861
Fig. 15—HydraulicReactionAssembly

CHRYSLERSERVICEMANUALSTEERING—405
OILISSUPPLIEDFROMMAINLINEATOPERATINGPRESSURE.DRIVER'SSTEERINGFORCEPASSES
FROMWORMCONNECTORTOREACTIONRINGTOTHEOIL-FILLEDSEALWHICHRESISTSBEING
SQUEEZEDBECAUSEOFTHEPRESSUREWITHINIT.THISRESISTANCEGIVESDRIVERTHE"FEEL"
OFSTEERINGBECAUSEOPERATINGPRESSUREISPROPORTIONALTOTURNINGLOAD.
UPPERPISTON
ROD
OILFROM
MAINLINE
WORMSEAL
CONNECTORRETAINERSVALVECONTROL SPACERSEAL
VALVE
SPOOL•-VALVE
OPERATINGRODOPERATINGCLEARANCES
53x862
Fig. 16—HydraulicReactionChamber
sooilpressuredropstoitslowestpoint.Power
assistanceceasesandthefrontwheelsremain
wherethesteeringwheelindicates.Theentire
actionisinstantaneousbecausetherelative
movementbetweenvalveandpistonissoslight.
Whatcausestherelativemovementbetween
thesepartsandhowdoesthedrivergethis
"feel"oftheroad?
Thefirstimportantfacttorememberisthat
thevalveismechanicallyconnectedtothesteer-
ingwheel,asshowninFigure15.Thevalve
solidlyconnectstothewormconnectorthrough
thevalve-operatingrod.Thewormconnectoris
attachedtothesteeringwheelthrougha worm
shaft,asshowninFigure11.Hence,theslight-
eststeeringwheel movementistransferred
throughthewormconnectortothevalve.
Anotherimportantfact,isthattheupperpis-
tonrodishydraulicallyattachedtotheworm
connectorthroughtwosealretainersanda rub-
berreactionsealwheneverthepowersystemis
operating(Fig.16).Theconnection iscalledhy-
draulicbecausetherubberseal,oneofthecon-
nectinglinksbetweenthewormconnectorand
pistonrod,isfilledwithoil.Oilfromthemain
oillineissuppliedtothesealthrougha hole
drilledinthepistonandanotherdrilleddown
thelongaxisoftheupperpistonrod.Theoilin
thereactionsealis,therefore,atfulloperating
pressure.
Supposethesteeringwheel isturnedinsuch
adirectionsothatthewormconnector(and
valve)triestomoveup(rightturn).Intrying
tomoveup,thewormconnectorpushesonthe
lowersealretainersandsqueezestheoil-filled
seal.Becausethevalvehasbeeninneutral
positionuntilthisinstant,thepressureinside
thereactionsealislowandthesealcompresses,
allowingthewormconnector— andvalve— to
movewithoutmovingthepistonrod.Inother
words,thereisrelativemotionbetweenthe
valveandpistonwhichisfastenedtothepiston
rod. Therefore,oilpressurerisesinthesystem
becauseoftherestrictionsbetweenthevalve
andvalvebody,andthepistonbeginstomove
thesteeringpartsthatconnecttothefront
wheels.Atthesametime,thehigheroilpres-
sureisfeltinsidetheoil-filledreactionseal.
Thegreaterpressureinsidethereactionseal
attemptstoforcethesealandthewormcon-
nectorbacktotheiroriginal(neutral)positions.
Therefore,thedriverfeelsa resistancetoturn-
ingthesteeringwheel(aresistanceproportional