1991 LEXUS SC300 boot

STEERING GEAR HOUSING
DISASSEMBLY
SR0GL±02
1. CLAMP GEAR HOUSING IN VISEUsing SST, secure the steering gear in a vise.
SST 09612±00012
2. REMOVE RIGHT AND LEFT TURN PRESSURE TUBES
(a) Remove the union bolt and gaskets.
(b) Using SST, remove the pressure tube. SST 09633±00020
(c) Remove the union seat.
3. REMOVE TIE ROD ENDS
(a) Loosen the lock nut and place matchmarks on the tie rod end
and rack end.
(b) Remove the tie rod end and rack guide spring cap lock nut.
4. REMOVE RACK BOOTS, CLAMPS AND CLIPS
(a) Remove the clip and clamp.
(b) Remove the rack boot.
(c) Mark the left and right boot.
5. REMOVE RACK ENDS AND CLAW WASHERS
(a) Unstake the claw washer.
NOTICE: Avoid any impact to the rack.
SR±150±
STEERING POWER STEERING
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16. INSTALL RACK BOOTS, CLAMPS AND CLIPS
(a) Ensure that the tube hole is not clogged with grease.HINT: If the tube hole is clogged, the pressure inside the boot
will change after it is assembled and the steering wheel
turned.
(b) Install the boot.
NOTICE: Be careful not to damage or twist the boot.
(c) Install the clamp and clip to the boot.
17. INSTALL TIE ROD ENDS
(a) Screw the lock nut and tie rod end onto the rack end until the matchmarks are aligned.
(b) After adjusting toe±in, torque the lock nut.
Torque: 56 N Vm (570 kgf Vcm, 41 ft Vlbf)
18. INSTALL RIGHT AND LEFT TURN PRESSURE TUBES
(a) Install a new union seat.
(b) Using SST, tighten nut.
SST 09633±00020
Torque: 24 N Vm (240 kgf Vcm, 17 ft Vlbf)
HINT: Use a torque wrench with a fulcrum length of 300 mm
(11.81 in.).
(c) Install the union bolt over the new gaskets and torque it.
Torque: 34 N Vm (350 kgf Vcm, 25 ft Vlbf)
SR±162±
STEERING POWER STEERING
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LOWER SUSPENSION ARMS AND
STRUT ROD REMOVAL
SA1A8±01
1. JACK UP VEHICLE AND REMOVE REAR WHEEL
2. REMOVE BRAKE CALIPER AND DISC
(a) Remove the 2 bolts and brake caliper from the axle hub.
(b) Hang up the brake caliper using wire, etc.
3. REMOVE STRUT ROD
(a) Remove the bolt and nut, disconnect the strut rod from therear axle carrier.
(b) Remove the bolt and nut and the strut rod.
4. REMOVE NO.1 LOWER SUSPENSION ARM
(a) Remove the nut.
(b) Using SST, disconnect the lower suspension arm from the axle carrier.
SST 09628±10011
NOTICE: Be careful not to damage the dust boot.
SA±118±
SUSPENSION AND AXLE REAR SUSPENSION
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5. ADJUST CAMBER AND CASTERSpecifications:
 


Camber
Left±right error 


0
01 ' + 30 '
30 ' or less
 


Caster
Left±right error 


2
56 ' + 30 '
30 ' or less
(a) Remove the engine under cover.
(b) Loosen the front and/or rear adjusting cam nuts.
(c) Adjust the camber and caster by front and/or rear adjusting
cams.
(See adjustment chart )
(d) Torque the front and/or rear adjusting cam nuts.
Torque: 226 N Vm (2,300 kgf Vcm, 166 ft Vlbf)
6. ADJUST TOE±IN
(a) Remove the boot clamps.
(b) Loosen the tie rod end lock nuts.
(c) Turn the left and right tie rod ends an amount to adjust the
toe±in.
Toe±in (total):
A+B 0.1  + 0.1 
C±D 1 + 1 mm (0.04 + 0.04 in.)
HINT: Insure that the lengths of the left and right tie rods are
the same.
Tie rod end length left±right error:
Less than 1.5 mm (0.059 in.)
SA±6±
SUSPENSION AND AXLE WHEEL ALIGNMENT
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(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
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(d) Slide the backing plate to the outside and disconnect theparking brake cable.
(e) Remove the bolt and nut and disconnect the strut rod.
(f) Remove the nut.
(g) Using SST, disconnect the No.1 lower suspension arm. SST 09628±10011
NOTICE: Be careful not to damage the dust boot.
(h) Remove the nut.
SA±54
±
SUSPENSION AND AXLE REAR AXLE HUB
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(i) Using SST, disconnect the No.2 lower suspension arm.SST 09610±20012
NOTICE: Be careful not to damage the dust boot.
(j) Remove the nut.
(k) Using SST, disconnect the upper arm and remove the axle carrier.
SST 09628±62011
NOTICE: Be careful nut to damage the dust boot.
AXLE HUB DISASSEMBLY
SA0RZ±02
1. REMOVE DUST DEFLECTORUsing a screwdriver, remove the dust deflector.
2. REMOVE OIL SEAL (INSIDE)
(a) Mount the axle carrier in a vise. HINT: Use a set of soft jaws in the vise to protect the axle carri-
er.
NOTICE: Do not tighten the vise too tight.
(b) Using SST, remove the oil seal. SST 09308±00010
±
SUSPENSION AND AXLE REAR AXLE HUBSA±55
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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
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