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Lexus SC300 / Lexus SC400. Manual - part 808

(b) Tighten the 8 bolts.

Torque: 22 N

⋅

m (225 kgf

⋅

cm, 16 ft

⋅

lbf)

14. CHECK RING GEAR BACKLASH

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

Backlash (average value):

0.08–0.13 mm (0.0031–0.0051 in.)

NOTICE: The difference between the maximum and minimum

measured values must be less than 0.05 mm (0.0020 in.)

HINT: The measured values should be used for reference
when selecting washers, so make a memo of the values.
If the backlash is not within the specification replace the
washer on the ring gear side with one of a different thickness
using the following procedure.
Adjusting washer thickness: mm (in.)

ÑÑÑÑ

No.

ÑÑÑÑÑÑÑÑÑÑ

Thickness

ÑÑÑÑ

No.

ÑÑÑÑÑÑÑÑÑ

Thickness

ÑÑÑÑ

No.

ÑÑÑÑÑÑÑÑÑÑ

Thickness

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.02 (0.0795)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.32 (0.0913)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.62 (0.1031)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.04 (0.0803)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.34 (0.0921)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.64 (0.1039)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.06 (0.0811)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.36 (0.0929)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.66 (0.1047)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.08 (0.0819)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.38 (0.0937)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.68 (0.1055)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.10 (0.0827)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.40 (0.0945)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.70 (0.1063)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.12 (0.0835)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.42 (0.0953)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.72 (0.1071)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.14 (0.0843)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.44 (0.0961)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.74 (0.1079)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.16 (0.0850)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.46 (0.0969)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.76 (0.1087)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.18 (0.0858)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.48 (0.0976)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.78 (0.1094)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.20 (0.0866)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.50 (0.0984)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.80 (0.1102)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.22 (0.0974)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.52 (0.0992)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.82 (0.1110)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.24 (0.0882)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.54 (0.1000)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.84 (0.1118)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.26 (0.0890)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.56 (0.1008)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.86 (0.1126)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.28 (0.0898)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.58 (0.1016)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

2.30 (0.0906)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.60 (0.1024)

ÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑ

15. MEASURE

TOTAL

PRELOAD

Using SST and a torque wrench, measure the total preload.
SST 09229–55010

Total preload

In addition to drive pinion preload

0.5–0.8 N

⋅

m (5–8 kgf

⋅

cm, 4.3–6.9 in.

⋅

lbf)

SA–98

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL

If the measure preload is less than specification, replace the
washer of the ring gear’s tooth surface side with a thicker
one.
If the preload is greater than the specification, replace the
washer of the ring gear’s tooth surface side with thinner one.
HINT: Changing the snap ring thickness by 0.02 mm (0.0008
in.) will change the total preload by approx. 0.1 N

⋅

m (1 kgf

⋅

cm,

0.9 in.

⋅

lbf)

16. INSPECT

TOOTH

CONTACT

PATTERN

(a) Coat 3 or 4 teeth at three different position on the ring gear

with red lead.

(b) Hold the companion flange firmly and rotate the ring gear in

both directions.

If tooth contact pattern is not correct, replace the adjusting
washer installed on the front of the drive pinion rear bearing
to adjust it.

NOTICE: Be sure to always use a new part when replacing ad-

justing washer.

HINT: Refer to the table below for selection of the adjusting
washer.

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL

SA–99

HINT: Adjust washer in 42 (different thicknesses in 0.01 mm
(0.004 in.) unit are available.
Adjusting washer thickness: mm (in.)

ÑÑÑ

No.

ÑÑÑÑÑÑÑÑ

Thickness

ÑÑ

No.

ÑÑÑÑÑÑÑÑ

Thickness

ÑÑÑ

No.

ÑÑÑÑÑÑÑ

Thickness

ÑÑÑ

No.

ÑÑÑÑÑÑÑÑÑ

Thickness

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.87 (0.0736)

ÑÑ

ÑÑÑÑÑÑÑÑ

1.98 (0.0780)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.09 (0.0823)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.20 (0.0866)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.89 (0.0744)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.00 (0.0787)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.11 (0.0831)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.22 (0.0874)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.90 (0.0748)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.01 (0.0791)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.12 (0.0835)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.23 (0.0878)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.91 (0.0752)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.02 (0.0795)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.13 (0.0839)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.24 (0.0882)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.92 (0.0756)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.03 (0.0799)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.14 (0.0843)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.25 (0.0886)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.93 (0.0760)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.04 (0.0803)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.15 (0.0846)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.26 (0.0890)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.94 (0.0764)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.05 (0.0807)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.16 (0.0850)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.27 (0.0894)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.95 (0.0768)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.06 (0.0811)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.17 (0.0854)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

2.28 (0.0898)

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.96 (0.0772)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.07 (0.0815)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.18 (0.0858)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

ÑÑÑ

ÑÑÑÑÑÑÑÑ

1.97 (0.0776)

ÑÑ

ÑÑÑÑÑÑÑÑ

2.08 (0.0819)

ÑÑÑ

ÑÑÑÑÑÑÑ

2.19 (0.0862)

ÑÑÑ

ÑÑÑÑÑÑÑÑÑ

17. REMOVE DIFFERENTIAL RETAINER

(See page

SA–88

)

18. REMOVE DIFFERENTIAL CASE

(See page

SA–88

)

19. REMOVE DRIVE PINION

(See page

SA–89

)

SA–100

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL

20. INSTALL SPACER ON DRIVE PINION

Install a new spacer on the drive pinion.

21. INSTALL DRIVE PINION AND FRONT BEARING

(See page

SA–96

)

22. INSTALL OIL SLINGER

(See page

SA–96

)

23.  INSTALL OIL SEAL
(a)  Apply the MP grease to a new oil seal lip.
(b)  Using SST, install a new oil seal until its end is flash with the

surface of the differential carrier.
SST 09316–60010 (09316–00010, 09316–00040)

09502–12010

24. INSTALL

COMPANION

FLANGE

Using SST and a press, install the companion flange.
SST 09223–63010, 09325–40010

NOTICE: Be careful not to damage the oil seal.

25. ADJUST DRIVE PINION PRELOAD
(a) Coat the threads and flange of a new nut with hypoid gear oil

for LSD.

(b) Using SST, tighten the nut.

SST 09229–55010, 09330–00021

preload.
SST 09229–55010

Preload (at starting):

New bearing

1.2 – 1.8 N

⋅

m (12.4 – 18.4 kgf

⋅

cm, 10.8 – 16.0 in.

⋅

lbf)

Reused bearing

0.5 – 0.8 N

⋅

m (5.10 – 8.0 kgf

⋅

cm, 4.3 – 6.9 in.

⋅

lbf)

–

SUSPENSION AND AXLE

REAR DIFFERENTIAL

SA–101

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