1991 LEXUS SC400 steering

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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FRONT SHOCK ABSORBER REMOVAL
SA0RN±04
1. JACK UP VEHICLE AND REMOVE FRONT WHEEL
2. REMOVE BRAKE CALIPER
(a) Remove the 2 bolts and caliper from the steering knuckle.
(b) Hang up the brake caliper using wire, etc.
3. REMOVE FRONT FENDER SPLUSH SHIELD
4. LH side only:MOVE WASHER TANK
(a) Remove the bolt.
(b) Remove the bolt and move the washer tank away from the body.
5. DISCONNECT ABS SPEED SENSOR AND WIRE HARNESS
(a) Remove the bolt and disconnect the speed sensor from the
steering knuckle.
SA±28
±
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.
±
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
±
SUSPENSION AND AXLE FRONT SUSPENSION
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UPPER SUSPENSION ARM REMOVAL
SA1A2±01
1. JACK UP VEHICLE AND REMOVE FRONT WHEEL
2. REMOVE FRONT BRAKE CALIPER AND DISC
(a) Remove the 2 bolts and brake caliper from the steeringknuckle.
(b) Hang up the caliper using wire, etc.
3. REMOVE FRONT FENDER SPLASH SHIELD
4. LH side only: MOVE WASHER TANK
(a) Loosen the bolt.
(b) Remove the bolt and move the washer tank away from the body.
5. REMOVE ABS SPEED SENSOR AND WIRE HARNESS CLAMP
(a) Remove the bolt and disconnect the speed sensor from the
steering knuckle.
SA±36
±
SUSPENSION AND AXLE FRONT SUSPENSION
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(b) Remove the 3 bolts and wire harness clamp to prevent thewire harness being damaged when removing or installing the
through bolt.
6. REMOVE UPPER SUSPENSION ARM
(a) Remove the cotter pin and the nut.
(b) Using SST, disconnect the upper suspension arm from the steering knuckle.
SST 09628±62011
(c) Remove the bolt and nut.
(d) Remove the upper suspension arm.
UPPER BALL JOINT INSPECTION
SA0RU±04
INSPECT BALL JOINT FOR ROTATION CONDITION
(a) As shown, flip the ball joint stud back and forth 5 times before
installing the nut.
(b) Using a torque wrench, turn the nut continuously one turn every 2±4 seconds and take the torque reading on the 5th
turn.
Torque (turning):
1.0±3.4 N Vm (10±35 kgf Vcm, 9±30 in. Vlbf)
If not within specification, replace the upper suspension arm.
±
SUSPENSION AND AXLE FRONT SUSPENSIONSA±37
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UPPER SUSPENSION ARM
INSTALLATION
SA1A3±01
1. INSTALL UPPER SUSPENSION ARM
(a) Temporarily install the upper suspension arm to the memberwith the bolt and nut.
(b) Connect the upper suspension arm to the steering knuckle with the nut and a new cotter pin.
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
2. INSTALL ABS SPEED SENSOR AND WIRE HARNESS
CLAMP
(a) Clamp the wire harness to the upper suspension arm and
body with the 3 bolts.
(b) Install the speed sensor to the steering knuckle with the bolt.
Torque: 7.8 N Vm (80 kgf Vcm, 69 in. Vlbf)
3. LH side only:
CONNECT WASHER TANK
(a) Tighten the bolt.
SA±38
±
SUSPENSION AND AXLE FRONT SUSPENSION
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(b) Install and tighten the bolt.
4. INSTALL FRONT FENDER SPLASH SHEILD
5. INSTALL BRAKE CALIPERInstall the brake caliper to the steering knuckle with the 2
bolts.
Torque: 118 N Vm (1,200 kgf Vcm, 87 ft Vlbf)
6. STABILIZE SUSPENSION
(a) Install the front wheel.
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 the vehicle and remove the front wheel.
7. TIGHTEN BOLT AND NUT OF UPPER SUSPENSION ARM
(a) Support the lower arm with jack.
(b) Torque the bolt and nut the specified torque.
Torque: 164 N Vm (1,670 kgf Vcm, 121 ft Vlbf)
8. INSTALL FRONT WHEEL AND LOWER VEHICLE
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
9. CHECK FRONT WHEEL ALIGNMENT
(See page SA±5)
±
SUSPENSION AND AXLE FRONT SUSPENSIONSA±39
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