2000 LEXUS GS400 Service Repair Manual

R00054
SST
R00054
SST
R00243
SST
R00047
SST SA±68
± SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER
2068 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. MEASURE DRIVE PINION PRELOAD
Using SST and a torque wrench, measure the preload using the
backlash of the drive pinion and ring gear.
Preload (at starting):
0.5 ± 0.8 N´m (5 ± 8 kgf´cm, 4.3 ± 6.9 in.´lbf)
HINT:
For vehicles which have run less than 8,000 km (5,000 miles),
the preload may be large.
SST 09229±55010
Maximum preload (at starting):
1.8 N´m (18 kgf´cm, 16.0 in.´lbf)
7. CHECK TOTAL PRELOAD
Using SST and a torque wrench, measure the preload with the
teeth of the drive pinion and ring gear in contact.
SST 09229±55010
Total preload (at starting):
Drive pinion preload plus
0.5 ± 0.8 N´m (5 ± 8 kgf´cm, 4.3 ± 6.9 in.´lbf)
If necessary, disassemble and inspect the differential.
8. CHECK PINION GEAR BACKLASH
Using a dial indicator, measure the pinion gear backlash with
holding one side gear toward the case.
Maximum: 0.15 mm (0.0059 in.)
NOTICE:
Differential gears should be able to rotate.
If the backlash is not within the specification, install the correct
thrust washer (See page SA±73).
9. CHECK TOOTH CONTACT PATTERN
(See page SA±73)
10. REMOVE SIDE GEAR SHAFTS
(a) Using SST, remove the 2 side gear shafts.
SST 09520±24010
NOTICE:
Be careful not to damage the oil seal.
(b) Using screwdriver, remove the 2 snap rings from the side
gear shafts.
11. REMOVE SIDE GEAR SHAFT OIL SEALS
Using SST, remove the 2 oil seals.
SST 09308±00010
12. REMOVE DIFFERENTIAL CARRIER RETAINERS
(a) Remove the 16 bolts.

R11079
SST
SST
R00022
R15856
SST
R00052
SST
R00024
± SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER
SA±69
2069 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Using SST, remove the 2 carrier retainers and washers.
SST 09950±40011, (09951±04020, 09952±04010,
09953±04030, 09954±04010, 09955±04061,
09957±04010, 09958±04011),
09950±60010 (09951±00450)
13. REMOVE DIFFERENTIAL CASE
Take the differential case out of the carrier with lifting the ring
gear side, as shown in the illustration.
14. REMOVE O±RINGS FROM DIFFERENTIAL CARRIER
RETAINERS
Using a screwdriver, remove the 2 O±rings.
15. REMOVE SIDE BEARING OUTER RACES AND AD-
JUSTING PLATE WASHERS
Using SST and a press, remove the 2 outer races and adjusting
plate washers.
SST 09950±60020 (09951±00710),
09950±70010 (09951±07150)
16. REMOVE DRIVE PINION, SPACER AND COMPANION
FLANGE
(a) Using a chisel and hammer, loosen the staked part of the
nut.
(b) Using SST, remove the nut.
SST 09229±55010, 09330±00021
(c) Using a press, remove the drive pinion with the rear bear-
ing and remove the companion flange.
NOTICE:
Be careful not to drop the drive pinion.
(d) Remove the spacer from the drive pinion.

R00042
SST
R09981
SST
SA1320
F03478
SST
R11085
Matchmarks SA±70
± SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER
2070 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
17. REMOVE OIL SEAL
Using SST, remove the oil seal.
SST 09308±00010
18. REMOVE OIL SLINGER AND FRONT BEARING
19. REMOVE REAR BEARING FRONT DRIVE PINION
Using SST and a press, remove the rear bearing from the drive
pinion.
SST 09950±00020
20. REMOVE FRONT AND REAR BEARING OUTER
RACES AND ADJUSTING PLATE WASHER
NOTICE:
Do not remove the outer race except when replacing the
bearings.
HINT:
Measure the washer and note the thickness for reassembly.
21. REMOVE SIDE BEARINGS
Using SST, remove the 2 side bearings from the differential
case.
SST 09950±40011, (09951±04020, 09952±04010,
09953±04030, 09954±04010, 09955±04061,
09957±04010, 09958±04011),
09950±60010 (09951±00450)
22. REMOVE RING GEAR
(a) Place matchmarks on the ring gear and differential case.
(b) Remove the 10 ring gear set bolts.
(c) Using a plastic hammer, tap on the ring gear to separate
it from the differential case.

SA1279
± SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER
SA±71
2071 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
23. DISASSEMBLE DIFFERENTIAL CASE
(a) Using a pin punch and hammer, remove the straight pin.
(b) Remove these parts from the differential case:

Pinion shaft

2 pinion gears

2 pinion gear thrust washers

2 side gears

2 side gear thrust washers

SA0R4±01
SA3213
D AB
C Front
F03479
A
B
F02401
± SUSPENSION AND AXLEREAR WHEEL ALIGNMENT
SA±7
2007 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REAR WHEEL ALIGNMENT
INSPECTION
1. MEASURE VEHICLE HEIGHT (See page SA±4)
2. INSTALL CAMBER±CASTER±KINGPIN GAUGE
ONTO WHEEL ALIGNMENT TESTER
Follow the specific instructions of the equipment manufacturer.
3. INSPECT CAMBER
Camber
Left±right error±0°47' ± 30' (±0.78° ± 0.5°)
30' (0.5°) or less
4. INSPECT TOE±IN
Toe±in
(total)A + B: 0°08' ± 12' (0.13° ± 0.2°)
C ± D: 1.4 ± 2 mm (0.056 ± 0.08 in.)
5. ADJUST CAMBER AND TOE±IN
(a) Measure the lengths of the toe control link and No.2 lower
suspension arm, as shown in the illustration.
Length: A ± B = 4.0 mm (0.16 in.) or less
If they are not within the specifications, adjust the lengths of
them by turning the adjusting cam, as shown, until (A ± B) is less
than 4.0 mm (0.16 in.).
(b) Measure the camber and toe±in.
(c) Adjust the camber.
(1) Loosen the camber adjusting cam nut of lower sus-
pension arm No.2.
(2) Turn the camber adjusting cam of lower suspension
arm No.2 and adjust camber.
HINT:
Camber changes about 5.0' (0.08°) with each graduation of the
cam.
(3) Torque the camber adjusting cam nut.
Torque: 110 N´m (1,120 kgf´cm, 81 ft´lbf)

F02402
SA±8
± SUSPENSION AND AXLEREAR WHEEL ALIGNMENT
2008 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Adjust the toe±in.
(1) Loosen the camber adjusting cam nut of toe control
link.
(2) Turn the camber adjusting cam of toe control link
and adjust toe±in.
HINT:
Camber changes about 5.0' (0.08°) with each graduation of the
cam.
(3) Torque the camber adjusting cam nut.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)

SA0SE±01
R15896
SST
SA1173
SST
R09980
SST
R15895
SST
SA1176
SA±72
± SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER
2072 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
1. REPLACE COMPANION FLANGE DUST DEFLECTOR
(a) Using SST and a press, remove the dust deflector.
SST 09950±00020, 09950±60010 (09951±00510)
(b) Using SST and a press, install a new dust deflector.
SST 09316±60011 (09316±00011)
2. REPLACE SIDE GEAR SHAFT DUST COVER
(a) Using SST and a press, remove the dust cover.
SST 09950±00020
(b) Using SST and a press, install a new dust cover.
SST 09502±24010, 09950±60020 (09951±00780),
09950±70010 (09951±07150)
HINT:
If the dust cover does not fit snugly against the flange of the side
gear shaft, use a screwdriver to drive it down.

SA1181
SA0SF±03
SA1178
W02619
SA1280
± SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER
SA±73
2073 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REASSEMBLY
1. ADJUST DIFFERENTIAL PINION GEAR BACKLASH
(a) Install the 2 proper thrust washers on the side gears.
HINT:
Using the table below, select thrust washers which will ensure
that the backlash is within the specification.
Thrust washer thickness:
Thickness mm (in.)Thickness mm (in.)
1.50 (0.059)1.75 (0.069)
1.55 (0.061)1.80 (0.071)
1.60 (0.063)1.85 (0.073)
1.65 (0.065)1.90 (0.075)
1.70 (0.067)±
(b) Install the 2 side gears, pinion gears, pinion gear thrust
washers and pinion shaft in the differential case.
HINT:
Align the holes of the differential case and pinion shaft.
(c) Push the 2 side gear shafts gently into the differential
case by hand and install them.
(d) Using a dial indicator, measure the pinion gear backlash
with holding one side gear toward the case.
Maximum: 0.15 mm (0.0059 in.)
NOTICE:
Differential gears should be able to rotate.
If the backlash is not within the specification, install the 2 side
gear thrust washers with different thicknesses.
(e) Remove the 2 side gear shafts.
2. INSTALL STRAIGHT PIN AND STAKE DIFFERENTIAL
CASE
(a) Using a pin punch and hammer, install the straight pin
through the differential case and hole of the pinion shaft.
(b) Stake the differential case.