2000 LEXUS GS400 Service Repair Manual

SA0RS±01
Z06742
F03477
± SUSPENSION AND AXLEFRONT LOWER BALL JOINT
SA±37
2037 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
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 torque wrench, turn the nut continuously one turn
per 2±4 seconds and take the torque reading on the 5th
turn.
Turning torque:
0.1 ± 3.0 N´m (1 ± 30 kgf´cm, 0.9 ± 26 in.´lbf)
HINT:
Check for unusual resistance or looseness as you turn the
torque wrench.

SA0RT±01
SA±38
± SUSPENSION AND AXLEFRONT LOWER BALL JOINT
2038 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page SA±36).
AFTER INSTALLATION, CHECK FRONT WHEEL ALIGNMENT (See page SA±4)

SA0RU±01
F02339
Stabilizer Bar
Stabilizer Bar Link
Engine Under Cover
Rear RH
Engine Under CoverEngine Under Cover
Rear LH Bushing
Bracket113 (1,150, 83)
55 (560, 41)
: Specified torqueN´m (kgf´cm, ft´lbf)
28 (290, 21)
± SUSPENSION AND AXLEFRONT STABILIZER BAR
SA±39
2039 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FRONT STABILIZER BAR
COMPONENTS

F02399
FRONT
REARSA0R3±01
Z03382
SA3213
A
DB
C Front
SA±4
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
2004 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FRONT WHEEL ALIGNMENT
INSPECTION
1. MEASURE VEHICLE HEIGHT
Tire sizeFront*1 mm (in.)Rear*2 mm (in.)
P215/60R16 94V245 (9.63)226 (8.90)
225/55R16 94V240 (9.45)221 (8.70)
235/45ZR17238 (9.37)219 (8.62)
*1: Front measuring point
Measure from the ground to the center of the lower suspension
arm mounting bolt.
*
2: Rear measuring point
Measure from the ground to the center of the No.2 lower sus-
pension arm mounting bolt.
NOTICE:
Before inspecting the wheel alignment, adjust the vehicle
height to the specification.
If the vehicle height is not within the specification, try to adjust
it by pushing down on or lifting the body.
2. INSTALL CAMBER±CASTER±KINGPIN GAUGE
ONTO WHEEL ALIGNMENT TESTER
Follow the specific instructions of the equipment manufacturer.
3. INSPECT CAMBER, CASTER AND STEERING AXIS
INCLINATION
Camber
Left±right error±0°16' ± 30' (±0.27° ± 0.5°)
30' (0.5°) or less
Caster
Left±right error7°33' ± 30' (7.55° ± 0.5°)
30' (0.5°) or less
Steering axis inclination
Left±right error8°52' ± 30' (8.87°± 0.5°)
30' (0.5°) or less
If the camber is not within the specification, adjust it by adjusting
cam.
4. INSPECT TOE±IN
Toe±in
(total)A + B: 0°09' ± 12' (0.15° ± 0.2°)
C ± D: 1.5 ± 2 mm (0.06 ± 0.08 in.)
If the toe±in is not within the specification, adjust it at the tie rod
end.

F02400
SA1204
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
SA±5
2005 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. ADJUST CAMBER
HINT:

After adjusting the camber, inspect the caster and toe±in.

Try adjusting the camber to the center value of the specifi-
cation.
(a) Loosen the camber adjusting cam nut of the lower sus-
pension arm.
(b) Turn the camber adjusting cam of the lower suspension
arm and adjust camber.
HINT:
Camber changes about 5' (0.08°) with each graduation of the
adjusting cam.
(c) Torque the camber adjusting cam nut of lower suspension
arm.
Torque: 172 N´m (1,755 kgf´cm, 127 ft´lbf)
6. ADJUST TOE±IN
(a) Remove the boot clips.
(b) Loosen the tie rod end lock nuts.
(c) Turn the left and right rack ends an equal amount to adjust
the toe±in.
HINT:

Try to adjust the toe±in to the center value.

Make sure that the lengths of the left and right rack ends
are same.
Rack end length difference: 1.5 mm (0.059 in.) or less
(d) Torque the tie rod end lock nuts.
Torque: 56 N´m (570 kgf´cm, 41 ft´lbf)
(e) Place the boot on the seat and clamp it.
HINT:
Make sure that the boots are not twisted.

SA0028
Front
A: Inside
B: Outside A
A
BB
SA±6
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
2006 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
7. INSPECT WHEEL ANGLE
Turn the steering wheel fully, and measure the turning angle.
Inside wheel38°51' (36°51' ± 39°51')
38.85° (36.85° ± 39.85°)
Outside wheel (Reference)32°05'
32.08°
If the wheel angles differ from the standard of the specification,
inspect the toe±in.

SA0RV±01
Z17089
Bushing
Stopper SA±40
± SUSPENSION AND AXLEFRONT STABILIZER BAR
2040 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE UNDER COVERS
2. REMOVE STABILIZER BAR
(a) Remove the 2 bolts and nuts, disconnect the stabilizer bar
from the 2 stabilizer bar links.
Torque: 55 N´m (560 kgf´cm, 41 ft´lbf)
(b) Remove the 4 bolts and 2 stabilizer bar brackets.
Torque: 28 N´m (290 kgf´cm, 21 ft´lbf)
3. REMOVE BOTH BUSHINGS AND BRACKETS
HINT:
At the time of installation, install the bushing to the outside of
bushing stopper.
4. REMOVE BOTH STABILIZER BAR LINKS FROM
BOTH LOWER SUSPENSION ARMS
Remove the 2 nuts and stabilizer bar links.
Torque: 113 N´m (1,150 kgf´cm, 83 ft´lbf)

SA0RW±01
Z06737
± SUSPENSION AND AXLEFRONT STABILIZER BAR
SA±41
2041 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
INSPECT BALL JOINT FOR ROTATION CONDITION
(a) As shown, flip the ball joint stud back and forth 5 times be-
fore installing the nut.
(b) Using a torque wrench, turn the stud continuously one
turn per 2±4 seconds and take the torque reading on the
5th turn.
Turning torque:
0.05 ± 1.5 N´m (0.5 ± 15 kgf´cm, 0.4 ± 13 in.´lbf)