steering wheel ACURA INTEGRA 1994 Service Repair Manual

,,
SUPPLEMENTAL RESTRAINT SYSTEM (SRS}
The Integra SRS includes a driver's airbag, located in the steering wheel hub. ln addition, all mod€ls excepi tna
Rs model for canada have a front passenger's airbsg located in the dashboard above the glove box, InformaUon
necessary to safely service the SRS is included in this servica Manual. ltems marked with an sstorisk (r) on thr
contents page include, or are located near, SRS components. Servicing. disassembling or roplacing thea6 ltems
will require special precautions and tools, and should thoreiore be done by an authorhed Acura dealer.
' To avoid rondering ths sRS inoporativo, which could lard to porronll Injury or darth In thc cvant ot. r.yr.
trontal collision, all sRs sorvico work must be pcrformcd by !n ruthorizcd Acu.! daerrr,
' lmpTopor 3orvica proceduroa, including inco.roct r.movd r d Installation of tha SRS, could Lld to pc[onc Inlu-
ry caussd by unintsntional activation ot tho airbags.
' All sRs oloctrical wiring harnoa$! aro coverod with yallow In3ulatlon, Rcbtcd componcnts arc bcrtad In tha
stoering Golumn, front console, dsrhboa.d, and darhboard lowor plnol, lnd in thc d$hbolrd abovc tha gaov!
bor. Do not uas oloctdcal te$ oquipmont on thaaa citcuhs.
NoTE: The original radio has a coded thett protection circuit. Be sure to get the customer's code numb6r b€lore* disconnecting the battery.
- removing the No. 32 (7.S A) fuse Jrom the undsr-hood fuse/relay box.
- removing the radio.
After service, reconnect power to the radio and turn it on. When the word ,,CODE,, is displayed, enter the cus_
tomer's 5-digit code to restore radio oDerauon.

Standards and Service Limits
Differential (Manual transmissionlSection 15
Differential (Automatic transmissionlSection 15
Steering - Section 17
' When using a new belt, adjust detlection or tension to new values. Run the engine lor 5 minutes then turn it off.Readiust detlection or tension to used belt values.
M€ASUREMENTSTANDARD INEW) SERVICE LIMIT
DifferentialPinion shaft contact area LD. 81881 engine818C1 engineCarrier'to-pinion clearance 81881 engineB18C t engineDriveshafvintermediate shaft contact area LD.81881 engine818C1 engineCarrier to driveshaft clearance 81881 engineBlSC'l engineCarrier-to-intermediate shatt clearanceB188l engine818C1 engine
18.000 - 18.016 (0.7087 - 0.7093)18.000 18.018 (0.7087 - 0.7094)0.0r3 0.045 (0.0005 - 0.0018)0.0'13 - 0.047 (0.0005 0.0019)
28.000 - 28.021 \1.1024-1.1032128.005 - 28.025 (1.1026 1.'1033)0.020 - 0.062 (0.0008 0.0024)0.045 , 0.086 {0.0018 - 0.0034)
0.050 - 0.087 (0.0020 0.0034)0.075 - 0.111 (0.0030 - 0.0044)
o. t aron,0.1 {0.006}
Differentialprnron gearEacklasht. D.Pinion geaFto-pinion shaft clearance
0.05 0.15 (0.002 0.006)'18.042 - 18.066 (0.7103 0.7113)0.055 - 0.095 (0.0022 0.0037)
Adjust
0.15 {0.006)
Sel ring-to-bearing outer race clearance 81881 engin€0 - 0.10 (0 0.004)Adjust
Differential taper roller bearing preloadStarting torque N.m {kgfcm, lbf.in) Bl8Cl engine2.1r - 3.04 {21.5 - 3 r.0, 13.0- 18.7)Adjust
MEASUREMENTSTANDARO INEWISERVICE LIM]T
Difterentialcarfl€rPinion shatt contact area l.D.Carrier-to-oinion clearanceDriveshafvintermediate shaft contact are l.D.Carrier-to-driveshatt clearance
18.000 - 18.018 {0.7087 - 0.7094)0.016 - 0.052 {0.0006 - 0.0020)28.00s 28.025 {1.1026 - 1.1033)0.025 - 0.066 (0.0010 - 0.0026)
0.1 {0.004)
0.12 (0.005)
Differentialprnron gearBacklasht.D.Pinion gear-to-pinion shaft clearance
0.05 - 0.15 (0.002 - 0.006)18.042 - 18.066 (0.7r03 - 0.7113)0.059 - 0.095 (0.0023 - 0.0037)
Adjust
0.15 (0.006)
Set ring-to-bearing outer race clearance0 - 0.r5 (0 - 0.006)Adjust
MEASUREMENTSTANDARD INEWI
Steering wheelRotational play at steering wheel circumferenceStaning losd at steering wheel circumferenceN {kgf, lbfl Engine running
0 - 10 {0 - 0.39)
34 \3.5,7.71
GearboxAngle of rack-guide-screw loosened from lockedposition20" i 5'
PurnpPump pressure with shut-off valve closedkPa (kgtlcm,, psi)6,400 7.400 165 75. 920 - 1. r00)
Power steeringtluidRecommended fluidFluid capacity For overhaulf (US qt, lmp q0 For fluid change
Honda power steering fluid V1.06 (1.12,0.98)
0.79 (0.83,0.70)
Power steeringbelt*Deflection with 98 N (1okgt,22lhfl
between pulleys11.5- 13.5 (0.45 0.53)with used belt8.0 - 10.010.31 0.39)with new belt
Belt tension N lkgf, lbl)Measured with belt tension gauge390 - 540 (40 - 55, 88 - 120) with used belt740 880175 90. 170 200) with new belt

Design Specifications
{cont'd}
lTEMMETRICI€iIGLISHINOTES
TRANSMISSIONTypeEngine typoManual transmission81881 | 818C1
G6ar Ratio 1st2nd3rd4th5thRov€rs€
3.2301.9001.2690.966o.7113.000
3.230r.9(X)1.3601.0340.'t873.000
Fin6l Reduction Gear typeGear ratioSingle helicalge.r4.2664.400
TypeAutomatic transmission
Gear Ratio 'l6t
znd3rd4thRevelse
2.7221.4640.97s0.6381.954
Final R€duction Goar typoGear ratioSingle helic6lgoar4.357
AIRCONDITIONINGCooling Capacity3,570 Kcal/h14,166 BTU/I
Compr6ssor Type/MakeNo. ol CylinderCaPtcityMax. SpsedLubricant C6pacity
Lubricrnt Type
swash-plare/NIPPoNDENSO10150 ml /rcv | 9.15 cu-in/r€v7,600 rpm140 mf | 1-2Bll ozI l.;3 tmp ozND-O|L8 (P/N 38899 - PR7 - A01)
Cond6ns€r TypeCorrugated fin
Evaporator TypeCorrugatod tin
Blower TypeMotor InputSpeed ControMax. Capachy
Sirocco tan200 w12 v4-speed450 m3/h | 15,900 cu lvh
Temperature ControlAirmix type
Compressor Clutch TypePowor ConsumptionDry, singlo plate, poly-V-b€lt driv640 W max./12 V at 68"F {20'C)
Refrigerant TypeOu.ntityHFC-134a (R-134a)
zoo-Ss I 24.7-l.aoe
STEERINGSYSTEMTypeOverall RatioTurns, Lock-to-LockSreering Wheel Dia.
Power assisted, rack and pinion16.12.98380 mm | 15.0 in
SUSPENSIONType Front
Roar
Shock Absorb€r, Front and Rear
Independent double wishbono,coil spring with st6bilizerIndependont double wishbong.coil spring with stabilizerTelescopic, hydraulic nitrogen gas-tilled
3-18

Removal
NOTE:
. Turn the crankshaft pulley so the No. 1 piston is at
top dead center {TDC) before removing the belt (see
page 6-51).
. Inspect the water pump when removed the timing
belt {see page 10-9).
Remove the wheel well splash shield (see page 6-
57 ).
Loosen the adiusting bolt and mounting bolts, then
remove the power steering (P/S) pump belt.
I x 1.25 mm2a N.m l2.a kgt.m, 17 lbt ttl
Loosen the adjusting bolt and idler pulley bracket
bolt, then remove the air conditioning (Ay'C) com-
oresso. belt.
D1INBOLT10 x 1.25 mmira N.m (4.5 kgf.m, 33 lbf'ttl
AOJUSTING
ADJUSNNG
BELT
4. Loosen the adiusting nut and mounting nut, then
remove the alternator belt.
NUTI x 1.25 mm24 N.m {2.a lgf.rn,17 tbf.ftl
MOUNTING NUT10 x 1.25 mm4,t N.m lia.5 kgl.m,33 tbt ftl
Remove the cruise control actuator (see page G58).
Bemove the side engine mount.
10 x 1.25 mm52 N.m 15.3 kgt m, 38 lbtftl
CNGINCMOUNT
12 x 1.25 mm74 N.m (7.5 kgt m,s4 lbf.trl
(cont'd)
6-49

Power Steering Pressure (PSP) Switch Signal
This signals the ECM when the power steering load
-;"nection.*."------'.ill]
--
;;;;;;;l w
;:"r"tffa;i'
connecrors (see
Turn the ignition switch ON.
Measure voltage between 88 {+ )terminal and A26 {-) terminal.
is high.
o ooooo oooo ooo I oo ooo oo o l.Do€d(iltl ooooooooooo
o oooo ooo ooooQ I oooQ oo oo $aG$ast.l oooooooo oo
A26 l-) Bg l+l
L6s! thsn l.O V?
wire side
Turn the ignition switch OFF.
Disconnect the 2P connector tromthe PSP switch.
ls there less than 1.0 V?
Tu.n the ignition switch ON.
Turn steering wheel slowly.ls there less than 1.O V?
Measure voltage between B8 (+)
terminal and 426 (-) termanalwhile steering wheel is turning.
Ropair opon in GRN wire betwssnECM {88} and PSP srYilch ot BLKwi.o botw6cn PSP switch andG301 (locatod at loft ongin6 com-partm6ntr.
Disconnect the 2P connector lromthe PSP switch.PSP switch signal is OK.
Repair short in GRN wi.e botwoonECM {881 and PSP switch.ll wiro i3 OK, substitute a known-good ECM and.ocheck. lIproscribod vollage is now available, replaco tho original ECM.
GRN
PSP SWITCH
11-93

Steering
Special Tools ............. 17-2
Component Location
lndex ................ ...... 17-3
System Description
Ff uid Flow Diagram ......................... 17 -1
Steering Pump ................................. 17-5
Steering Gearbox ............................. 17-7
Troubleshooting
General Troubleshooting ................ 17-10
Noise and Vibration ......................... 17-14
Fluid Leaks ............. 17-16
Inspection and Adiustment
Steoring Operation .......................... 17 -14
Power Assist Check
with Car Parked ........................... 17-18
Steering Linkage and Gearbox ....... 17-19
Pump Beh .............. 17-20
Rack Guide Adjustment ............. ..... 17-21
Ff uid Replacement ...................... ..... 17 -21
Pump Pressure Check .................. .... 17 -22
Ffuid Leakage lnspection ................ 17-23
+ Steering Wheel
Removal ..,,,,,,,........ 17-24
Disassembly/Reassembly ............... 17 -25
fnstallation ,......,,,,,. 17-26
* Steering Column
Removaf .................17-28
Inspection .............. 17-30
Installation ............. 17-31
Power Steering Hoses. Pipes
Replacemont ......... 17-3tl
Power Steering Pump
Removal ................. 17-35
Disassembly .......... 17-35
Reassembly ........... 17-'10
lnstallation ........,..., l7-tltl
Steering Gearbox
Removaf .,.,............. 17-45
Disassembly .......... 17-/E
Reassembly ........... 17-53
lnstallation ............. 17-63
Ball Joint Boot Replacement .......... 17-65
SUPPLEMENTAL RESTRAINT SYSTEM {SRSI
The Integra SRS includes a driver's airbag. located in the steering wheel hub, In addition, all models except the
RS model for Canada have a front passenger's airbag located in the dashboard above the glove box. Information
necessarv to safely service the SRS is included in this Service Manual. ltems marked with an asterisk {') on the
contents page include, or are located near, SRS components. Servicing. disassembling or replacing these items
will require special precautions and tools, and should therefore be done by an authorized Acura dealer.
a To avoid rsndering ths SRS inoporative, which could load to po.sonal iniury 01 d€ath in th€ event ot a ssvare
lrontal collision, all SRS service work muat be performod by an authorizod Acura deal6t.
a lmploper service procodules. including incorloct romoval and installation of the SRS, could lead to personal iniu-
ry caused by unintontional activation ot the airbags.
a All SRS elsctdcal wiring harnesses ara covorod with ysllow insulation. Rolalod compon€nts 8re locatsd in tho
stse ng column, tront console, dashboard, and dashboard lower panel, and in the dashboard above the glove
box. Do not use oloctrical tost equipmoni on thosa cilcuits.
NOTE: The original radio has a coded thett protection circuit. Be sure to get the customer's code number before
- disconnecting the battery.- removing the No. 32 (7.5 A) tuse from the under-hood fuse/relay box.
- removing the radio.
Alter service, reconnect power to the radio and turn it on. When the word "CODE" is displayed' enter the cus-
tomer's 5-digit code to restore radio operation.

Component Location
lndex
Powar Siooring:
NOTE:
a
a
It an intact airbag ass€mbly has been r€moved from a scrapped car or has been found defective or damaged during
transit. storage or service, it should be doploy€d (see section 23).
Before removing tho gearbox, remove ths ignition key to keep the steering shaft Jrom turning.
After installing the gearbox, check ths whe€l alignment and adiust if necessary.
CAUTION:
. All SRS aloctricll wiring h!m!|$a rrc covcred with
yrllow in3uhtion.
. 8€for€ disconnocling lny ptrt ol thc SRS wiro h!r'
ne*r, connect thc lhort conncctor{3l.
. Rcplsce lhc ontira ttfact d SRS harnccc a$embly il
it hs3 !n oprn circuh 01 dtm!9.d wiring.
SIEERING COLUiINRemoval, page 17-28Inspection, pago 17-30Installation, p6ge 17-31rcNMON SwlTCHSee s6ction 23
STEERII{G GEARBOXRack Guide Adjustment, pag.11-21
Removal, pags 17-45Diossombly, page 17-{8Bea65€mbly, page 17-53Installation, page 17-63
POWEN STEERING PUMPPump Beft Inspoction. page 17-2OPump Eeft Adjustm6nl, pago 17-2OPump Pressurg Ch€ck, page 17-22Removai, p6go 17-35Disassembly, p3gs 17-35Reassombly, psge l7-40lnstallation, page 17-44
STEERING WHEELRemoval. page 17-24Oisassembly/Reassembly, pageInstallation, page 17-2617-25
TIE'ROD END BALL JOINTBall Joint Eoot Replacement, page 17-63
17-3

Pressure Control
Low assist at higher speeds:
When steering resistance is low. such as when driving at high speeds. or when driving straight ahead, the input shaft is
near or in the neutral position, so there is little or no flow to any of the power cylinder orifices, Most of the feed pressure
trom the pump is bypassed to the reservoir. Because of this, the pressure stays the same in both sides of the power cylin-
der, resulting in low or no assist.
vaz =- S\->/-\7/RETURN PASSAGE(To RESERVOIRI
VALVE UNITINPUT SHAFT
High assist at lower speeds:
When steering resistance is high, such as when driving at low speed, or when turning the wheel with the car stopped, the
difference in angle created between the input shaft and the valve opens the fluid passage on one side, and closes the fluid
passage on the other side, at each pair of orifices. The fluid pressure increases in the side of the power cylinder fed by the
larger fluid passage. This increased pressure pushes on the rack piston, allowing the steering wheel to be turned with light
effon. On the other side of the power cylinder, the return passage opens allowing the steering fluid to return through the
input shaft to the reservoir. The fluid passages to the power cylinder automatically change in size, increasing as the steer-
ing resistance increases. In other words, the passages become larger and power assist increases when the steering effort
would normally be high, (for example. when parking or making low speed turns). and the passages become smaller and
power assist decreases when the steering effort would normally be low, (for example, when driving at high speeds or
straight ah€ad).
FLUIO PASSAGE TOPOWER CYLINDERFrom PUMP
A
/t-:\
v"
=iJ
RETURNPASSAGE
FLUID PASSAGE FROMPOWER CYLINDER
ALVE F.om PUMP
RESERVOIR

Ch6ck force r6quired to turn thowheel(see page 17-18).St6 the engine and m6asureforce required to turn the whgelto the right and left. Dilference olthe lo.ce required to turn thewho€l to the right and to the lettshould be 5 N (0.5 kgf, 1 lbf) orbelow.
Normal
Ch6ck pump fluid pressure (seepage 17-221.Turn the steering wheel lully tothe right and left whil€ idlingwith the shut-off valvo fully op6n,and measure tho fluid pressu.e. ltshould be 6,400 - 7,400 kPa (65 -
75 kg?cm,, 924 - 1,067 psil.
Normal
Abnormal -----|. Faulty gearbox
Abnormal |r
Chsck the other parts than the gearbox-ralated psrts forpropor rotstion,* lmpropor rotation ofthe steering column-rolat€d pan(sl'Faulty st6€ring jointa Faulty rack end^ie-rod end balljoints'Intederence in the steering system
lmproperly adjusted rack guide
(cont'dl
Chock the gearbox.Remove the goarbox and mea-sure the pinion torque.The torque should be;* 0.7 - 1.2 N.m (7 - 12 kgf.cm, 6 -'10 lbt in) with the steering rackin the straight driving position.
Normal
Adjust the rack guide (see page11-211.Adiust the rack guide and recheckthe pinion torque.
17-11

Troubleshooting
General Troubleshooting {cont'd}
Assist (excessively light steering) athigh speed.
Shock or vibration when wheel isturned to tull lock.
Wheelwill not return smoolhly.
ll the problem is not corrected byadjusting th6 rack g!ide. adjustthe front wheel alignment (see
section 18).
Check the rack guido proper ad'justment (see pago 17-21).
Check the rack guide tor properadjustment (ses psge 17-21).
Rack guide is adjusted prop€rly.
lf th€ problem is not correct€d byadiusting the rack guide, roplacethe gesrbox.Ch6ck the belt tor slip and adjustas nocessary (see page 17-20).
lf oither one or both of the cylin-der pip€ A and B is/are deformed,rsplace,
lf the cylinder pip6 A and B arenormal, remove the gearboxfrom th€ f.ame and mossure thepinion torqug on the gearbox.
It should be 0.7 - 1.2 N.m {7 - 12kgf.cm, 6 - 10 lbf.in) or belowwith the sleering rack in thestraight ahead driving position.
lf lhe measurem€nts are out ofspecilications. adjust the rackguid6.
ll ihe problem is not corrected byadjusting the rack guide, replaceihe gearbox.
17-12