2003 LEXUS LS430 differential

Fig. 117: Installing Ring Gear Side Outer Race
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
52.INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
a. Using snap ring pliers, install the side gear shaft snap ring in the differential carrier on the ring gear
side.
HINT:
Use the side
gear shaft snap ring installed when performing tooth contact adjustment.

Fig. 118: Installing Side Gear Shaft Snap Ring In Differential Carrier On Ring Gear Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Set a dial indicator on the differential carrier.
c. Tighten the SST bolt to alter the differential carrier's shape.
Shaped limit: 0.20 mm (0.0079 in.)

Fig. 119: Setting Dial Indicator On Differential Carrier
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. Using snap ring pliers, install the side gear shaft snap ring on the drive pinion side.
HINT:
Use the side gear shaft snap ring installed at tooth contact adjustment.

Fig. 120: Installing Side Gear Shaft Snap Ring On Drive Pinion Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
e. Remove the dial indicator, tap the differential carrier on the drive pinion side using a plastic
hammer to stabilize the case bearin
g.

Fig. 121: Tapping Differential Carrier On Drive Pinion Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
53.ADJUST DIFFERENTIAL DRIVE PINION PRELOAD
a. Using SST and a torque wrench, measure the preload.
SST 09229-55010
Drive pinion preload (at starting):
New bearing:
1.5 to 2.0 N.m (15 to 21 kgf.cm, 13 to 18 in..lbf)
Reused bearing:
0.5 to 0.8 N.m (5 to 8 kgf.cm, 4.3 to 6.9 in..lbf)

Fig. 122: Adjusting Differential Drive Pinion Preload
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. If the preload is greater than the specified maximum value, replace the bearing spacer.
c. If the preload is less than the specified minimum value, check the preload while retightening the
nut by 5 to 10 degrees to adjust it into the specified value range.
Torque: 98 to 490 N.m
(1,000 to 5000 kgf.cm, 72 to 361 ft.lbf)
HINT:

Tighten the nut using approximately 98 N.m (1,000 kgf.cm) of force and then tighten it further
while observing the preload.
d. Even if the nut tightening torque is greater than the specified maximum value, if the preload is less
than the specified minimum value, loosen the nut and check that the threads of the nut and drive
pinion are not stripped.
e. If the threads are not stripped, replace the spacer and apply hypoid gear oil LSD to the threads and
repeat the procedure.
54.INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION
a. Place a dial indicator where 10 mm (0.39 in.) away from the drive pinion shaft tip at a right angle.
b. Measure the shaft runout.
Maximum runout: 0.08 mm (0.0031 in.)
Fig. 123: Inspecting Differential Drive Pinion Runout

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
55.INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
a. Appl
y MP grease to the 2 new oil seal lips.

b. Using SST and a hammer, tap a new oil seal until the face becomes flush with the differential
carrier surface.
SST 09223-15030, 09950-70010 (09951-07200)
Fig. 124: Installing Rear Differential Side Gear Shaft Oil Seal

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
56.INSPECT TOTAL PRELOAD
a. Using SST and a torque wrench, check the torque (at starting) with the drive pinion and ring gear
teeth in contact.
SST 09229-55010
Total preload (at starting):
Drive pinion preload plus 0.46 to 1.37 N.m
(4.69 to 13.97 kgf.cm, 4.07 to 12.13 in..lbf)