torque LEXUS SC400 1991 Service Repair Manual

FRONT AXLE HUB
DESCRIPTION
SA002±06
The wheel bearings are double±row angular ball bearings having small rol\
ling resistance and are free from
maintenance.
The preload of the bearing can be determined only by tightening the axle hub\
nut at a specified torque,
improving serviceability.
SA±14±
SUSPENSION AND AXLE FRONT AXLE HUB
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PREPARATION
SST (SPECIAL SERVICE TOOLS)
SA00K±03
RECOMMENDED TOOLS
SA00L±02
EQUIPMENT
SA00M±01\
 
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Dial indicator 


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Torque wrench
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SUSPENSION AND AXLE FRONT AXLE HUBSA±15
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FRONT AXLE HUB ASSEMBLY
SA0W3±03
1. INSTALL BEARING
(a) Using SST, install a new bearing to steering knuckle.SST 09608±35014 (09608±06200)
NOTICE: If the inner race and balls come loose from the
bearing outer race, be sure to install them on the same
side as before.
(b) Using snap ring pliers, install the snap ring.
2. INSTALL OIL SEAL
(a) Install the inner race (outside).
(b) Using SST and a hammer, tap in a new oil seal until it is flush
with end surface of the steering knuckle.
SST 09608±32010
(c) Coat MP grease to the oil seal lip.
3. INSTALL AXLE HUB TO STEERING KNUCKLE
(a) Install the brake dust cover to the steering knuckle with the 4 bolts.
Torque: 8.3 N Vm (85 kgf Vcm, 74 in. Vlbf)
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SUSPENSION AND AXLE FRONT AXLE HUBSA±21
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(b) Using SST and a press, press the axle hub to steeringknuckle.
SST 09608±32010, 09608±35014 (09608±06040)
4. INSTALL ABS SPEED SENSOR ROTOR NOTICE: Do not scratch the serrations of the sensor ro-
tor.
5. INSTALL AXLE HUB LOCK NUT
(a) Install and torque a new axle hub lock nut.
Torque: 199 N Vm (2,030 kgf Vcm, 147 ft Vlbf)
(b) Using a screwdriver and hammer, stake the lock nut.
6. INSTALL HUB BEARING CAP
Using a screwdriver and hammer, install the hub bearing cap
to the steering knuckle.
SA±22
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SUSPENSION AND AXLE FRONT AXLE HUB
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FRONT AXLE HUB INSTALLATION
SA040±06
1. INSTALL STEERING KNUCKLE TO UPPER BALL JOINT
(a) Install the steering knuckle to the upper suspension arm withthe nut.
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
(b) Install a new cotter pin.
2. CONNECT STEERING KNUCKLE TO LOWER
SUSPENSION ARM
(a) Connect the steering knuckle to the lower suspension arm
with the nut.
Torque: 125 N Vm (1,270 kgf Vcm, 92 ft Vlbf)
(b) Install a new clip.
3. CONNECT TIE ROD END TO STEERING KNUCKLE
(a) Connect the tie rod end to the steering knuckle with the nut.
Torque: 49 N Vm (500 kgf Vcm, 36 ft Vlbf)
(b) Install a new cotter pin.
4. INSTALL FRONT BRAKE DISC AND CALIPER
(a) Align the matchmarks and install the brake disc to the axle
hub with the 2 screws.
(b) Install the brake caliper to the steering knuckle with the 2 bolts.
Torque: 118 N Vm (1,200 kgf Vcm, 87 ft Vlbf)
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SUSPENSION AND AXLE FRONT AXLE HUBSA±23
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5. CONNECT ABS SPEED SENSOR TO STEERINGKNUCKLE
Connect the sensor to the steering knuckle with the bolt.
Torque: 7.8 N Vm (80 kgf Vcm, 69 in. Vlbf)
6. INSTALL FRONT WHEEL AND LOWER VEHICLE
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
7. CHECK FRONT WHEEL ALIGNMENT
(See page SA±5)
FRONT WHEEL HUB BOLT
REPLACEMENT
SA1A1±01
1. JACK UP VEHICLE AND REMOVE FRONT WHEEL
2. REMOVE FRONT BRAKE CALIPER AND DISC
(See page SA±30)
3. REMOVE HUB BOLT Using SST, remove the hub bolt.
SST 09628±10011
4. INSTALL HUB BOLT Install a washer and nut to the bolt, as shown in the illustra-
tion, and install a new hub bolt by torquing the nut.
5. INSTALL FRONT BRAKE DISC AND CALIPER (See page SA±36)
6. INSTALL FRONT WHEEL AND LOWER VEHICLE
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
SA±24±
SUSPENSION AND AXLE FRONT AXLE HUB
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PREPARATION
SST (SPECIAL SERVICE TOOLS)
SA02Q±07
RECOMMENDED TOOLS
SA06X±03
EQUIPMENT
SA02S±02
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Torque wrench 




SA±26±
SUSPENSION AND AXLE FRONT SUSPENSION
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(b) Install the coil spring to the shock absorber.HINT: Fit the lower end of the coil spring into the gap of the
spring seat of the shock absorber.
4. INSTALL SUSPENSION SUPPORT
(a) Install the suspension support to the rod.
(b) Temporarily tighten a new nut.
(c) Turn the suspension support so that one of the bolts on the suspension support faces the same direction, as shown in
the illustration.
HINT: Align the bolt so that a line drawn between the rod and
the bolt would be 90 5 to the direction of the lower bushing.
5. REMOVE SST HINT: After removing the SST, again check the direction of
the suspension support.
FRONT SHOCK ABSORBER
INSTALLATION
SA063±05
1. INSTALL SHOCK ABSORBER TO BODY
(a) Install the shock absorber with coil spring to the body with the
3 nuts.
Torque: 35 N Vm (360 kgf Vcm, 26 ft Vlbf)
(b) Torque the temporarily tightened nut in the middle of the
suspension support.
Torque: 29 N Vm (300 kgf Vcm, 22 ft Vlbf)
(c) Install the plug to the suspension support.
SA±32
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SUSPENSION AND AXLE FRONT SUSPENSION
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2. CONNECT SHOCK ABSORBER TO LOWERSUSPENSION ARM
(a) Connect the shock absorber to lower suspension arm.
(b) Install the bolt from the rear vehicle and temporarily tighten the nut.
3. TEMPORARILY CONNECT UPPER SUSPENSION ARM TO MEMBER
(a) C onnect the upper suspension arm to the suspension
member.
(b) Install the bolt from the front vehicle and temporarily tighten the bolt and nut.
4. CONNECT ABS SPEED SENSOR AND WIRE HARNESS
(a) Clamp the wire harness to the upper suspension arm and body with the 3 bolts.
(b) Connect the speed sensor to the steering knuckle with the bolt.
Torque: 7.8 N Vm (80 kgf Vcm, 69 in. Vlbf)
5. LH side only:
CONNECT WASHER TANK
(a) Install and tighten the bolt.
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SUSPENSION AND AXLE FRONT SUSPENSIONSA±33
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(b) Install and tighten the bolt.
6. INSTALL FRONT FENDER SPLASH SHIELD
7. INSTALL DISC BRAKE CALIPERInstall the brake caliper to the steering knuckle with the 2
bolts.
Torque: 118 N Vm (1,200 kgf Vcm, 87 ft Vlbf)
8. STABILIZE SUSPENSION
(a) Install the front wheel and lower vehicle.
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
(b) Bounce the vehicle up and down several times to stabilize the
suspension.
(c) Jack up vehicle and remove the front wheel.
9. TIGHTEN BOLT AND NUT ON LOWER SIDE OF SHOCK ABSORBER
(a) Support the lower arm with a jack.
(b) Tighten the nut to the specified torque.
Torque: 143 N Vm (1,460 kgf Vcm, 106 ft Vlbf)
10. TIGHTEN BOLT AND NUT OF UPPER SUSPENSION ARM
Tighten the bolt and nut to the specified torque.
Torque: 164 N Vm (1,670 kgf Vcm, 121 ft Vlbf)
11. INSTALL FRONT WHEEL AND LOWER VEHICLE
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
12. CHECK FRONT WHEEL ALIGNMENT
(See page SA±5)
SA±34
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SUSPENSION AND AXLE FRONT SUSPENSION
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