LEXUS LS430 2003 Factory Repair Manual

Fig. 3: Identifying Differential Components (2 Of 2)
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ADJUSTMENT
1.INSPECT AND ADJUST DIFFERENTIAL OIL

a. Stop the vehicle on a level place.
b. Using a hexagon wrench (10 mm), remove the rear differential filler plug and gasket.
c. Check that the oil surface is within 5 mm (0.20 in.) of the lowest position of the inner surface of the
differential filler plug opening.
Fig. 4: Inspecting And Adjusting Differential Oil

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d. Check for oil leakage when the oil level is low.
e. Using a hexagon wrench (10 mm), install the rear differential filler plug with a new gasket.
Torque: 49 N.m (500 kgf.cm, 36 ft.lbf)
2.ADD DIFFERENTIAL OIL
a. Using a hexagon wrench (10 mm), remove the rear differential filler plug and gasket.
b. Add oil.
Oil type: Differential synthetic gear oil GL-5 75W-90 or equivalent
Capacity: 1.35 +/- 0.05 liters (1.43 +/- 0.05 US qts, 1.19 +/- 0.04 Imp. qts)

c. Check the oil level.
d. Using a hexagon wrench (10 mm), install the rear differential filler plug with a new gasket.
Torque: 49 N.m (500 kgf.cm, 36 ft.lbf)
REPLACEMENT
HINT:
See COMPONENTS
Use the same procedures for the RH side and LH side.
1.REMOVE REAR WHEEL
2.REMOVE REAR DIFFERENTIAL FILLER PLUG
a. Using a hexagon wrench (10 mm), remove the filler plug and gasket.
3.REMOVE REAR DIFFERENTIAL DRAIN PLUG
a. Using a hexagon wrench (10 mm), remove the drain plug and gasket.
b. Drain the differential oil.
4.REMOVE REAR DRIVE SHAFT ASSY LH (SEE REPLACEMENT
)
5.REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
a. Using SST, remove the oil seal.
SST 09308-10010

Fig. 5: Removing Rear Differential Side Gear Shaft Oil Seal
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6.INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
a. Using SST and a hammer, install a new oil seal.
b. Apply MP grease to the oil seal lip.
SST 09950-70010 (09951-07150), 09223-15030
Oil seal drive in depth: 0 +/- 0.5 mm (0 +/- 0.020 in.)

Fig. 6: Installing Rear Differential Side Gear Shaft Oil Seal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
7.INSTALL REAR DRIVE SHAFT ASSY LH (SEE REPLACEMENT
)
8.INSTALL REAR DIFFERENTIAL DRAIN PLUG
a. Using a hexagon wrench (10 mm), install the drain plug with a new gasket.
Torque: 49 N.m (500 kgf.cm, 36 ft.)
9.ADD DIFFERENTIAL OIL
a. Fill the rear differential carrier assy with differential gear oil.
Oil type: Differential synthetic gear oil GL-5 75W-90 or equivalent.
<00260044005300440046004c0057005c001d000300140011001600180003000e00120010000300130011001300180003004f004c00570048005500560003000b00140011001700160003000e00120010000300130011001300180003003800360003005400
570056000f0003001400110014001c0003000e001200100003[0.04 Imp. qts)
10.INSPECT DIFFERENTIAL OIL (SEE ADJUSTMENT
)
11.INSTALL REAR DIFFERENTIAL FILLER PLUG
a. Using a hexagon wrench (10 mm), install the filler plug with a new gasket.
Torque: 49 N.m (500 kgf.cm, 36 ft.lbf)
12.STABILIZE SUSPENSION (SEE ADJUSTMENT
)
13.INSPECT AND ADJUST REAR WHEEL ALIGNMENT (SEE ADJUSTMENT
)
14.CHECK ABS SPEED SENSOR SIGNAL (SEE TEST MODE PROCEDURE
)

OVERHAUL
HINT:
See COMPONENTS

1.REMOVE REAR WHEEL
2.REMOVE EXHAUST PIPE ASSY (SEE REPLACEMENT
)
3.REMOVE FRONT FLOOR HEAT INSULATOR NO.1 (SEE OVERHAUL
)
4.REMOVE PROPELLER SHAFT HEAT INSULATOR (SEE OVERHAUL
)
5.REMOVE PROPELLER W/CENTER BEARING SHAFT ASSY (SEE OVERHAUL
)
6.REMOVE REAR DIFFERENTIAL FILLER PLUG
a. Using a hexagon wrench (10 mm), remove the filler plug and gasket.
7.REMOVE REAR DIFFERENTIAL DRAIN PLUG
a. Using a hexagon wrench (10 mm), remove the drain plug and gasket.
b. Drain the differential oil.
8.REMOVE REAR DRIVE SHAFT ASSY LH (SEE REPLACEMENT
)
9.REMOVE REAR DRIVE SHAFT ASSY RH
HINT:
Removal procedure of the RH side is the same as that of the LH side.
10.REMOVE STABILIZER BAR REAR (SEE REPLACEMENT
)
HINT:
Perform this procedure only when the rear differential mount cushion should be changed.
11.REMOVE HEIGHT CONTROL VALVE SUB-ASSY NO.2 (W/ AIR SUSPENSION) (SEE
REPLACEMENT
)
HINT:
Perform this procedure only when the rear differential mount cushion should be changed.
12.REMOVE DIFFERENTIAL CARRIER ASSY REAR
a. Support the differential carrier with a jack and wooden block.

b. Using a hexagon wrench (12 mm), remove the 3 hexagon bolts.
Fig. 7: Removing Differential Carrier Assy Rear Bolts

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c. Remove the 2 bolts and lower mount stoppers.
d. Remove the differential.
e. Remove the 2 upper mount stoppers from the differential carrier.

Fig. 8: Removing Bolts And Lower Mount Stoppers
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13.REMOVE REAR DIFFERENTIAL MOUNT CUSHION NO.1
a. Using SST, remove the rear differential mount cushion No.1.
SST 09570-24010, 09316-12010
HINT:
Perform this operation only when the rear differential mount cushion No.1 is damaged.

Fig. 9: Removing Rear Differential Mount Cushion No. 1

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14.REMOVE REAR DIFFERENTIAL MOUNT CUSHION NO.2
a. Using SST remove the rear differential mount cushion No.2.
SST 09570-24010, 09316-12010
HINT:
Perform this operation only when the rear differential mount cushion No.2 is damaged.
Fig. 10: Removing Rear Differential Mount Cushion No.2