LEXUS LS430 2003 Factory Repair Manual

If the runout is greater than the maximum, replace the drive pinion and ring gear.
Fig. 21: Inspecting Runout Of Differential Drive Pinion

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
22.INSPECT DIFFERENTIAL DRIVE PINION PRELOAD
a. Using SST and a torque wrench, measure the preload using the backlash of the drive pinion and
ring gear.
SST 09229-55010
Drive pinion preload (at starting):
0.5 to 0.8 N.m (5 to 8 kgf.cm, 4.3 to 6.9 in..lbf)
If the preload is not within the specification, adjust the rear differential drive pinion preload or repair as
necessar
y.

Fig. 22: Inspecting Differential Drive Pinion Preload
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
23.INSPECT TOTAL PRELOAD
a. 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 0.46 to 1.37 N.m
(4.69 to 13.97 kgf.cm, 4.07 to 12.13 in..lbf)
If necessary, disassemble and inspect the differential.

Fig. 23: Inspecting Total Preload
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
24.REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
a. Using SST, remove the 2 oil seals.
SST 09308-00010

Fig. 24: Removing Rear Differential Side Gear Shaft Oil Seal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
25.REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
a. Install the SST to the rear differential carrier assy.
SST 09571-50010

Fig. 25: Installing SST To Rear Differential Carrier Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Install a dial indicator to the rear differential carrier assy.
c. Tighten the SST bolt and alter the differential carrier's shape to create a 0.1 mm (0.004 in.)
clearance between the side bearing (outer race) and side gear shaft snap ring.
HINT:
Set the dial indicator to the rearmost position (upper side in the illustration) of the area
around where the side gear shaft oil seal is tapped in.
Approximately 0.1 mm (0.004 in.) clearance between the side bearing (outer race) and the
side
gear shaft snap ring is sufficient enough for the washer to move slightly.

Fig. 26: Tightening SST Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. Using snap ring pliers, remove the side gear shaft snap ring on the drive pinion side.
HINT:
For reassembly purposes, measure the thickness of the side gear shaft snap ring. Write down the
result.
e. Remove the dial indicator and loosen the SST bolt.

Fig. 27: Removing Side Gear Shaft Snap Ring On Drive Pinion Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
26.REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
a. Using SST and a hammer, create a clearance between the side bearing (outer race) on the ring gear
and side gear shaft snap ring.
SST 09608-32010, 09950-70010 (09951-07200)
HINT:
The clearance cannot be seen, but tapping the SST with a hammer three or four times should be
enou
gh.

Fig. 28: Creating Clearance Between Side Bearing (Outer Race) On Ring Gear And Side
Gear Shaft Snap Ring
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Using snap ring pliers, remove the side gear shaft snap ring on the ring gear side.
HINT:
For reassembl
y purposes, measure the thickness of the side gear shaft snap ring. Write down the result.

Fig. 29: Removing Side Gear Shaft Snap Ring On Ring Gear Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
27.REMOVE REAR DIFFERENTIAL CASE BEARING
a. Tighten the SST bolt and push out the outer race on the ring gear side.
SST 09571-50010
b. Remove the SST.

Fig. 30: Removing Outer Race On Ring Gear Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
28.REMOVE REAR DIFFERENTIAL CASE BEARING
a. Raise the ring gear of the differential case slightly to remove the drive pinion side outer race.
HINT:
For reassembly, check the installation position of the outer race and the side gear shaft snap ring before
removing the outer race. Write down the result.