LEXUS LS430 2003 Factory Repair Manual

Fig. 51: Measuring Differential Case Runout
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
41.REMOVE REAR DIFFERENTIAL CASE BEARING
a. Tighten the SST bolt to push out the ring gear side outer race.
SST 09571-50010
b. Remove the SST.

Fig. 52: Removing Rear Differential Case Bearing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
42.REMOVE REAR DIFFERENTIAL CASE BEARING
a. Raise the rin
g gear side of the differential case slightly to remove the drive pinion side outer race.

Fig. 53: Removing Rear Differential Case Bearing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
43.REMOVE REAR DIFFERENTIAL CASE SUB-ASSY

Fig. 54: Removing Rear Differential Case Sub-Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
44.REMOVE REAR DIFFERENTIAL CASE BEARING
a. Using SST, remove the 2 differential case bearings from the differential case.
SST 09950-60010 (09951-00480), 09950-40011 (09951-04020, 09952-04010, 09953-04030,
09954-04010, 09955-04061, 09957-04010, 09958-0401 1)

Fig. 55: Removing Rear Differential Case Bearing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
45.INSPECT DIFFERENTIAL PINION GEAR BACKLASH
a. Using a vise, hold the differential case between two aluminum plates.
b. Place a dial indicator on the tip of the pinion gear tooth at a right angle. Hold the side gear in the
differential case and check that the backlash is 0 mm (0 in.).
If the backlash is not within the specification, replace the rear differential case sub-ass
y with a new one.

Fig. 56: Inspecting Differential Pinion Gear Backlash
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
46.INSTALL DIFFERENTIAL RING GEAR
a. Clean the contact surfaces of the differential case and the threads of the ring gear and differential
case.
b. Heat the ring gear to approximately 100°C (212°F) in boiling water.
c. Carefull
y remove the ring gear from the boiling water.

Fig. 57: Heating Ring Gear
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. After the moisture on the ring gear has completely evaporated, quickly install the ring gear to the
differential case.
HINT:
Align the matchmarks on the ring gear and the differential case.
e. Tighten the new 2 bolts temporarily so that the bolt holes in the ring gear and differential case are
not misaligned.

Fig. 58: Aligning Matchmarks On Ring Gear And Differential Case
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
47.INSTALL REAR DIFFERENTIAL CASE BOLT
a. Clean the differential ring gear set bolt hole.
b. After the ring gear has been cooled sufficiently, install the new 8 ring gear set bolts to which thread
lock has been applied.
Thread lock:
Part No. 08833-00100, THREE BOND 1360 K or equivalent.

Fig. 59: Installing Rear Differential Case Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Torque the 10 set bolts uniformly and a little at a time.
Torque: 64 N.m (650 kgf.cm, 47 ft.lbf)
Tighten the bolts further by 60 to 90°

Fig. 60: Identifying Rear Differential Case Bolt Tightening Angle
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
48.INSTALL REAR DIFFERENTIAL CASE BEARING
a. Using SST and a press, install the 2 differential case bearings.
<00360036003700030013001c001c001800130010001900130013001400130003000b0013001c001c00180014001000130013001800190013000c000f00030013001c001c001800130010001a00130013001400130003000b0013001c001c00180014001000
13001a001400130013000c000f00030013001c001c00180013[-60020 (09951-00810),
09950-70010 (09951-07100)