Lexus GS300/400 (2000 year). Service manual — part 273

SA1143

Boiling Water

SA1158

Matchmarks

SA1148

SA1180

60 – 90

°

64 N·m (650 kgf·cm, 47 ft·lbf)

R15897

SST

SST

SA–74

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL CARRIER

2074

3.

INSTALL RING GEAR ON DIFFERENTIAL CASE

(a)

Clean the contact surfaces of the differential case and the
threads of the ring gear and differential case.

(b)

Heat the ring gear in boiling water.

(c)

Carefully remove the ring gear from the boiling water.

(d)

After the moisture on the ring gear has completely evapo-
rated, quickly install the ring gear to the differential case.

HINT:
Align the matchmarks on the ring gear and the differential case.
(e)

Tighten 2 of the bolts temporarily so that the bolt holes in
the ring gear and differential case are not misaligned.

NOTICE:
The ring gear set bolts should not be tightened until the
ring gear has cooled sufficiently.

4.

INSTALL RING GEAR SET BOLTS

(a)

After the ring gear has cooled sufficiently, install new 10
ring gear set bolts to which thread lock has been applied.
Thread lock:
Part No. 08833–00100, THREE BOND 1360 K or equiv-
alent.

NOTICE:
New ring gear set bolts should be used in every case.

(b)

Torque the 10 set bolts uniformly and a little at a time.
Torque: 64 N·m (650 kgf·cm, 47 ft·lbf)

(c)

Tighten the bolts further by 60 – 90

°

.

NOTICE:
Tighten the bolts in diagonally opposite pairs.

5.

INSTALL SIDE BEARINGS

Using SST and a press, install the 2 side bearings.

SST

09710–30050, 09950–60010 (09951–00450),
09950–70010 (09951–07150)

R15898

SST

SST

R00055

SST

R00045

SST

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL CARRIER

SA–75

2075

6.

INSTALL DRIVE PINION BEARING OUTER RACES
AND ADJUSTING WASHER

HINT:

The adjusting washer is used for adjusting the tooth con-
tact pattern. 42 types of washer with different thicknesses
are available.

First fit a washer with the same thickness as the washer
which was removed, then after checking the tooth contact
pattern, replace the washer with one of a different thick-
ness if necessary.

When removing an adjusting washer, be sure to replace
it with a new one.

(a)

Using SST and a press, install the front bearing outer
race.
SST

09950–60020 (09951–00710),
09950–70010 (09951–07150)

(b)

Using SST and a press, install a new adjusting washer to
the rear bearing outer race.
SST

09255–10012, 09950–70010 (09951–07150)

7.

INSTALL REAR BEARING TO DRIVE PINION

Using SST and a press, install the rear bearing.

SST

09502–24010

8.

TEMPORARILY INSTALL DRIVE PINION, FRONT
BEARING, OIL SLINGER AND COMPANION FLANGE

(a)

Install the drive pinion in the differential carrier.

(b)

Using SST and a press, install the front bearing on the
drive pinion.
SST

09316–60011 (09316–00011), 09608–04031

HINT:
Assemble the spacer and oil seal after adjusting the tooth con-
tact pattern.
(c)

Install the oil slinger.

SA1130

SST

SST

R00052

SST

R00054

SST

R15899

SST

SA–76

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL CARRIER

2076

(d)

Using SST and a press, install the companion flange.
SST

09223–46011, 09325–40010

9.

TEMPORARILY ADJUST DRIVE PINION PRELOAD

(a)

Adjust the drive pinion preload by tightening the compan-
ion flange nut.

HINT:
Using SST to hold the flange, tighten the nut.

SST

09229–55010, 09330–00021

NOTICE:
As there is no spacer, tighten the nut a little at a time, being
careful not to overtighten it.

(b)

Using SST and a torque wrench, measure the preload.
SST

09229–55010

Preload (at starting):
New bearing:
1.5 – 1.8 N·m (15 – 18 kgf·cm, 13.0 – 15.6 in.·lbf)
Reused bearing:
0.5 – 0.8 N·m (5 – 8 kgf·cm, 4.3 – 6.9 in.·lbf)

HINT:
For vehicles which have run 8,000 km (5,000 miles) or less, if
the preload value measured before disassembly is greater than
the specification for a reused bearing, return the preload to the
same as before disassembly.

10.

INSTALL SIDE BEARING OUTER RACES AND AD-
JUSTING PLATE WASHERS

Using SST and a press, install the 2 adjusting plate washers
and outer races.

SST

09950–60020 (09951–00810),
09950–70010 (09951–07150)

R00022

R15900

SST

RH

Front

R00027

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL CARRIER

SA–77

2077

11.

INSTALL DIFFERENTIAL CASE IN CARRIER

Install the drive side bearing in the differential carrier first, as
shown in the illustration, then install the differential case.

12.

INSTALL DIFFERENTIAL CARRIER RETAINERS

(a)

Using SST and a hammer, install 2 carrier retainers.
SST

09950–60020 (09951–00890),
09950–70010 (09951–07150)

(b)

Tighten the 16 bolts.
Torque: 22 N·m (225 kgf·cm, 16 ft·lbf)

13.

CHECK RING GEAR BACKLASH

Using a dial indicator, measure the backlash of the ring gear at
3 positions at least.

Backlash: 0.08 – 0.13 mm (0.0031 – 0.0051 in.)

NOTICE:
The difference between the maximum and minimum mea-
sure values must be less than 0.05 mm (0.0020 in.).
HINT:
The measured values should be used as reference when se-
lecting washers, so take a note of the values.