lock LEXUS SC400 1991 Service Repair Manual

(d) Tighten the tie rod end lock nut.
Torque: 56 NVm (570 kgf Vcm, 41 ft Vlbf)
(e) Place the boot on the seat and clip it.
HINT: Insure that the boots are not twisted.
7. INSPECT WHEEL ANGLE Wheel angle:
 

Inside wheel
 

37
04 '
(35 04 ' ~ 38 04 ')
 

Outside wheel
(reference) 

32
23 '
If wheel angle differ from the standard specifications, check
to see if the lengths of the left and right tie rods are the same.
HINT: If the tie rods lengths are not equal, the wheel angle
can not be adjusted properly.
Reinspect the toe±in after adjusting the tie rods lengths.
±
SUSPENSION AND AXLE WHEEL ALIGNMENTSA±7
WhereEverybodyKnowsYourName

FRONT AXLE HUB DISASSEMBLY
SA0RL±04
1. REMOVE HUB BEARING CAPUsing a screwdriver, remove the hub bearing cap from the
steering knuckle.
2. REMOVE FRONT AXLE HUB LOCK NUT AND ABS SPEED SENSOR ROTOR
(a) Clamp the axle hub in a soft jaw vise.
HINT: Close vise until it holds hub bolt do not tighten further.
(b) Using a hammer and chisel, loosen the staked part of the lock
nut and remove it.
(c) Remove the sensor rotor.
NOTICE: Take care not to scratch the serrations of the sensor
rotor.
3. REMOVE AXLE SHAFT FROM STEERING KNUCKLE
(a) Remove the 4 bolts and shift the brake dust cover toward the hub side (outside).
(b) Using SST, remove the axle shaft from the steering knuckle. SST 09950±20017
±
SUSPENSION AND AXLE FRONT AXLE HUBSA±19
WhereEverybodyKnowsYourName

(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
±
SUSPENSION AND AXLE FRONT AXLE HUB
WhereEverybodyKnowsYourName

(b) Remove the 3 bolts and disconnect the wire harness clampto prevent the wire harness being damaged when removing
or installing the through bolt.
6. LOOSEN PISTON ROD LOCK NUT
(a) Remove the plug from the support.
(b) Loosen the lock nut in the middle of the suspension support.
NOTICE: Only loosen the nut, do not remove it.
7. DISCONNECT UPPER SUSPENSION ARM
(a) R e m o v e t h e b o l t a n d n u t a n d d i s c onnect the upper
suspension arm from the member.
(b) Hang up the upper suspension arm using wire, etc.
8. REMOVE SHOCK ABSORBER
(a) Remove the bolt and nut and disconnect the shock absorber from the lower suspension arm.
±
SUSPENSION AND AXLE FRONT SUSPENSIONSA±29
WhereEverybodyKnowsYourName

5. REMOVE DRIVE SHAFT LOCK NUT
(a) Install the brake disc and caliper.
(b) Remove the cotter pin and lock cap.
(c) While applying the brakes, remove the nut.
(d) Remove the brake caliper and disc.
6. REMOVE DRIVE SHAFT(See page SA±66)
7. REMOVE PARKING BRAKE SHOE
(See page BR±44)
8. REMOVE ABS SPEED SENSOR Remove the bolt and ABS speed sensor.
9. REMOVE REAR AXLE HUB WITH CARRIER
(a) Remove the 2 bolts.
(b) Remove the 2 bolts.
(c) Remove the hexagon bolt.
±
SUSPENSION AND AXLE REAR AXLE HUBSA±53
WhereEverybodyKnowsYourName

(i) Install the 2 bolts.
Torque: 7.8 NVm (80 kgf Vcm, 69 in. Vlbf)
2. INSTALL PARKING BRAKE SHOE
(See page BR±44)
3. INSTALL ABS SPEED SENSOR Install the sensor to the axle carrier with the bolt.
Torque: 7.8 N Vm (80 kgf Vcm, 69 in. Vlbf)
4. INSTALL DRIVE SHAFT
(See page SA±67)
5. INSTALL BRAKE DISC AND BRAKE CALIPER
(a) Align the matchmarks and install the brake disc.
(b) Install the brake caliper with the 2 bolts.
Torque: 104 N Vm (1,065 kgf Vcm, 77 ft Vlbf)
6. INSTALL DRIVE SHAFT LOCK NUT
(a) Torque the nut while applying the brakes.
Torque: 289 N Vm (2,950 kgf Vcm, 213 ft Vlbf)
(b) Install the lock cap and a new cotter pin.
SA±60
±
SUSPENSION AND AXLE REAR AXLE HUB
WhereEverybodyKnowsYourName

REAR DRIVE SHAFT REMOVAL
SA0S3±03
1. JACK UP VEHICLE AND REMOVE REAR WHEEL
2. REMOVE EXHAUST PIPE
3. REMOVE COTTER PIN, LOCK NUT CAP AND LOCK NUT
4. REMOVE REAR DRIVE SHAFT
(a) Place matchmarks on the drive shaft and side gear shaft.
NOTICE: Do not use a punch to mark the matchmarks. Use
paint, etc.
(b) Using a 10 mm hexagon wrench, remove the 6 hexagon bolts
and 2 washers while depressing the brake pedal.
(c) Hold the inboard joint side of the drive shaft so that the
outboard joint side does not bend too much.
(d) Using a plastic±faced hammer, lightly tap the end of the drive
shaft, disengage the axle hub and remove the drive shaft.
NOTICE:
w Be careful not to damage the boots, end cover and speed
sensor rotor of the drive shaft, and oil seal of the axle hub.
w Make sure the outboard joint side of the drive shaft does
not bend too much.
SA±66±
SUSPENSION AND AXLE REAR DRIVE SHAFT
WhereEverybodyKnowsYourName

REAR DRIVE SHAFT INSTALLATION
SA0S4±02
1. INSTALL DRIVE SHAFT
(a) Insert the outboard joint side of the drive shaft to the axle hub.
NOTICE:
wBe careful not to damage the boots, end cover and speed
sensor rotor of the drive shaft, and oil seal of the axle hub.
w Make sure the outboard joint side of the drive shaft does
not bend too much.
(b) Align the matchmarks on the side gear shaft and drive shaft.
(c) Apply a light coat of engine oil on the threads of the bolt.
(d) Install the 6 hexagon bolts and 2 washers.
(e) Using a 10 mm hexagon wrench, torque the bolts.
Torque: 83 N Vm (850 kgf Vcm, 64 ft Vlbf)
2. INSTALL EXHAUST PIPE
3. INSTALL LOCK NUT, LOCK CAP AND NEW COTTER PIN
Torque: 289 N Vm (2,950 kgf Vcm, 213 ft Vlbf)
4. INSTALL REAR WHEEL AND LOWER VEHICLE
±
SUSPENSION AND AXLE REAR DRIVE SHAFTSA±67
WhereEverybodyKnowsYourName

NGOK
OKNG
INSPECTION PROCEDURE
1Check voltage between terminals #10  60 of engine (& ECT) ECU and body ground.
C
OK
P(2) Connect the Check Harness A. (See page TR±34)
(2) Turn ignition switch on.
Measure voltage between terminals #10 ~ 60 of engine
(& ECT) ECU and body ground.
Voltage: 10 ± 14 V
Go to step
.
2Check AM2 and INK fuses.
C
OK
PRemove AM2 and INJ fuses from fuse block.
Check continuity of AM2 of INJ fuses.
Continuity
Check for short in all the harness and components
connected to AM2 and INJ fuses.
Check for open in harness and connector between
engine (& ECT) ECU and battery.
TR±130±
ENGINE TROUBLESHOOTING Circuit Inspection
WhereEverybodyKnowsYourName

Fuel Pressure Control VSV Circuit
CIRCUIT DESCRIPTION
The ECU turns on a VSV (Vacuum Switching Valve)
to draw the air into the diaphragm chamber of the
pressure regulator if it detects that the temperature of
the coolant is too high during engine starting.
The air drawn into the chamber increases the fuel
pressure to prevent fuel vapor lock at high engine
temperature in order to help the engine start when it
is warm.
Fuel pressure control ends approx. 100 secs. after
the engine is started.
DIAGNOSTIC CHARTDIAGNOSTIC CHART
Check operation for fuel pressure control
VSV.Replace fuel pressure control VSV.
Repair or replace harness or
connector.
Proceed to next circuit inspection
shown on matrix chart (See page
TR±35).
Check for open and short in harness and
connector between main relay and ECU.
Check voltage of VSV power source.
Check and replace ECU.
WIRING DIAGRAM
TR±142±
ENGINE TROUBLESHOOTING Circuit Inspection
WhereEverybodyKnowsYourName