LEXUS GS400 2000 Service Repair Manual

SA0R2±01
R03031
R13504
SA±2
± SUSPENSION AND AXLETIRE AND WHEEL
2002 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TIRE AND WHEEL
INSPECTION
1. INSPECT TIRE
(a) Check the tires for wear and for the proper inflation pres-
sure.
Cold tire inflation pressure:
(GS 400)
Tire sizeFront
kPa (kgf/cm2
or bar, psi)
Rear
kPa (kgf/cm2
or bar, psi)
225/55R16 94V*1220 (2.2, 32)
*2290 (2.9, 42)
*1220 (2.2, 32)
*2290 (2.9, 42)
235/45ZR17*1230 (2.3, 33)
*2300 (3.0, 44)
*1230 (2.3, 33)
*2300 (3.0, 44)
(GS 300)
Tire sizeFront
kPa (kgf/cm2
or bar, psi)
Rear
kPa (kgf/cm2
or bar, psi)
P215/60R16 94V*1210 (2.1, 30)
*2300 (3.0, 44)
*1210 (2.1, 30)
*2300 (3.0, 44)
225/55R16 94V*1220 (2.2, 32)
*2300 (3.0, 44)
*1220 (2.2, 32)
*2300 (3.0, 44)
*1: For driving under 160 km/h (100 mph)
*
2: For driving at 160 km/h (100 mph) or over
(b) Check the tire runout.
Tire runout: 1.4 mm (0.055 in.) or less
2. ROTATING TIRES
HINT:
See the illustration for where to rotate each tire.

R07928
F04238
16 inch wheel
17 inch wheelApprox. 25 mm (0.984 in.)
Approx. 25 mm (0.984 in.)
R11097
± SUSPENSION AND AXLETIRE AND WHEEL
SA±3
2003 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. INSPECT WHEEL BALANCE
(a) Check and adjust the off±the±car balance.
(b) If necessary, check and adjust the on±the±car balance.
Unbalance after adjustment: 8.0 g (0.018 lb) or less
NOTICE:

Adhere the sticking type balance weight to the flat
position shown in the illustration.

Push the balance weight securely with a finger to ad-
here it to the position.
(Pushing force: 10 kgf/more than 2 secs.)

After cleaning the surface which the balance weight
will be adhered to of dirt, oil and water with a cleaning
detergent, adhere the balance weight to the surface.

Do not touch the sticking surface of the tape.

Do not use the once used balance weight.

Please use the TOYOTA genuine sticking type bal-
ance weight.
4. CHECK WHEEL BEARING LOOSENESS
(a) Check the backlash in the bearing shaft direction.
Maximum: 0.05 mm (0.0020 in.)
(b) Check the axle hub deviation.
Maximum: 0.05 mm (0.0020 in.)
5. CHECK FRONT SUSPENSION FOR LOOSENESS
6. CHECK STEERING LINKAGE FOR LOOSENESS
7. CHECK BALL JOINT FOR LOOSENESS AND
EXCESSIVE PLAY (See page SA±34)
8. CHECK SHOCK ABSORBER WORKS PROPERLY

Check for oil leak

Check mounting bushings for wear

Bounce front and rear of the vehicle

SA0RD±01
W00593
SST SA±20
± SUSPENSION AND AXLEFRONT SHOCK ABSORBER
2020 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISASSEMBLY
REMOVE SUSPENSION SUPPORT AND COIL SPRING
(a) Using SST, compress the coil spring.
SST 09727±30021
NOTICE:
Do not use an impact wrench. It will damage the SST.
(b) Remove the piston rod lock nut.
(c) Remove these parts from the shock absorber:

Suspension support No.2

Spring bumper

Coil spring

SA0RE±01
W00277
± SUSPENSION AND AXLEFRONT SHOCK ABSORBER
SA±21
2021 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
INSPECT SHOCK ABSORBER
Compress and extend the shock absorber rod and check that
there is no abnormal resistance or unusual operation sounds.
If there is any abnormality, replace the shock absorber with a
new one.
NOTICE:
When discarding the shock absorber, see DISPOSAL on
page SA±22.

SA0RF±01
F03480
SA±22
± SUSPENSION AND AXLEFRONT SHOCK ABSORBER
2022 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISPOSAL
1. FULLY EXTEND SHOCK ABSORBER ROD
2. DRILL HOLE TO REMOVE GAS FROM CYLINDER
(a) Place the shock absorber horizontally to prevent the oil
from coming out.
(b) Using a drill, make a hole on the top of the shell as shown
to discharge the gas inside.
CAUTION:
The gas coming out is harmless, but be careful of chips
which may fly up when drilling.

SA0RG±01
W00278
W00276
SST
W00288
Outside
Rear20° Suspension Support
Shock Absorber
Lower Bushing
± SUSPENSION AND AXLEFRONT SHOCK ABSORBER
SA±23
2023 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REASSEMBLY
1. INSTALL SPRING BUMPER TO SUSPENSION
SUPPORT
HINT:
Match the bolt of the suspension support with the cut±out part
of the spring bumper.
2. INSTALL COIL SPRING TO SHOCK ABSORBER
(a) Using SST, compress the coil spring.
SST 09727±30021
NOTICE:
Do not use an impact wrench. It will damage the SST.
(b) Install the coil spring to the shock absorber.
HINT:
Fit the lower end of the coil spring into the recess of the spring
seat of the shock absorber.
3. INSTALL SUSPENSION SUPPORT
(a) Install the suspension support to the rod.
(b) Temporarily tighten a new lock nut.
(c) Align the suspension support with the shock absorber
lower bolt, as shown.
4. REMOVE SST
HINT:
After removing the SST, recheck the direction of the suspension
support.

SA0RH±01
SA±24
± SUSPENSION AND AXLEFRONT SHOCK ABSORBER
2024 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order or removal (See page SA±18).
AFTER INSTALLATION, CHECK ABS SPEED SENSOR SIGNAL (See page DI±389) AND FRONT
WHEEL ALIGNMENT (See page SA±4)

SA0RI±03
F02336
Suspension Support
No.1
Shock Absorber
With Coil Spring
Upper Suspension Arm
ABS Speed Sensor
Stabilizer BarO±Ring
7.8 (80, 69 in.´lbf)
87 (890, 64)
5.0 (55, 48 in.´lbf)
53 (540, 39)
Clip


: Specified torque

Non±reusable partN´m (kgf´cm, ft´lbf)
157 (1,600, 116)
55 (560, 43)
56 (570, 41)
± SUSPENSION AND AXLEFRONT UPPER SUSPENSION ARM
SA±25
2025 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FRONT UPPER SUSPENSION ARM
COMPONENTS

SA0RJ±01
F02316
SA±26
± SUSPENSION AND AXLEFRONT UPPER SUSPENSION ARM
2026 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. REMOVE FRONT SHOCK ABSORBER
(See page SA±18)
3. REMOVE UPPER SUSPENSION ARM
Remove the 2 bolts and upper suspension arm.
Torque: 53 N´m (540 kgf´cm, 39 ft´lbf)
HINT:
At the time of installation, after stabilizing the suspension,
torque the bolts.

SA0RL±01
SA±28
± SUSPENSION AND AXLEFRONT UPPER SUSPENSION ARM
2028 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page SA±26).
AFTER INSTALLATION, CHECK ABS SPEED SENSOR (See page DI±389) AND FRONT WHEEL
ALIGNMENT (See page SA±4)