Infiniti G37 Coupe. Manual — part 434

DLN-50

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

DIFFERENTIAL ASSEMBLY

CAUTION:

Never change the total amount of washers as it changes the bearing preload.

Inspection After Disassembly

INFOID:0000000001714229

Clean up the disassembled parts. Then, inspect if the parts are worn or damaged. If so, follow the measures
below.

Content

Conditions and Measures

Hypoid gear

• If the gear teeth do not mesh or line-up correctly, determine the cause and adjust or replace as nec-

essary.

• If the gears are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with new

drive gear and drive pinion as a set.

Bearing

• If any chipped (by friction), pitted, worn, rusted or scratched mark, or unusual noise from the bearing

is observed, replace as a bearing assembly (as a new set).

Side gear and pinion mate
gear

• If any cracks or damage on the surface of the tooth is found, replace.
• If any worn or chipped mark on the contact sides of the thrust washer is found, replace.

Side gear thrust washer and
pinion mate thrust washer

• If it is chipped (by friction), damaged, or unusually worn, replace.

Oil seal

• Whenever disassembled, replace.
• If wear, deterioration of adherence (sealing force lips), or damage is detected on the lips, replace them.

Differential case

• If any wear or crack on the contact sides of the differential case is found, replace.

Companion flange

• If any chipped mark (about 0.1 mm, 0.004 in) or other damage on the contact sides of the lips of the

companion flange is found, replace.

DRIVE PINION

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< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

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DRIVE PINION

Exploded View

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1.

Drive pinion lock nut

2.

Companion flange

3.

Front oil seal

4.

Pinion front bearing

5.

Gear carrier

6.

Side oil seal

7.

Side flange

8.

Collapsible spacer

9.

Pinion rear bearing

10. Pinion height adjusting washer

11.

Drive pinion

12. Side bearing adjusting washer

13. Side bearing

14. Side gear thrust washer

15. Circular clip

16. Side gear

17. Lock pin

18. Pinion mate gear

19. Pinion mate thrust washer

20. Pinion mate shaft

21. Drive gear

22. Differential case

23. Bearing cap

24. Filler plug

25. Gasket

26. Rear cover

27. Drain plug

A.

Oil seal lip

B.

Screw hole

C.

After tightening the bolts to the spec-
ified torque, tighten the bolts addi-
tionally by turning the bolts 31 to 36
degrees.

:

Apply gear oil.

:

Apply anti-corrosion oil.

:

Apply Genuine Silicone RTV or equivalent. Refer to

GI-15, "Recommended Chemical Products and Sealants"

.

:

Apply Genuine High Strength Thread Locking Sealant or equivalent. Refer to

GI-15, "Recommended Chemical Products

and Sealants"

.

Refer to

GI-4, "Components"

for symbols not described on the above.

JPDID0129GB

DLN-52

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

DRIVE PINION

Disassembly

INFOID:0000000001714236

1.

Remove differential case assembly. Refer to

DLN-39, "Disassembly"

.

2.

Remove drive pinion lock nut with the flange wrench.

3.

Put matching mark (B) on the end of drive pinion. The matching
mark should be in line with the matching mark (A) on companion
flange (1).

CAUTION:

For matching mark, use paint. Never damage companion
flange and drive pinion.
NOTE:
The matching mark (A) on the final drive companion flange (1)
indicates the maximum vertical runout position.
When replacing companion flange, matching mark is not neces-
sary.

4.

Remove companion flange using the suitable pullers.

5.

Press drive pinion assembly out of gear carrier.

CAUTION:

Never drop drive pinion assembly.

6.

Remove front oil seal.

7.

Remove side oil seal.

8.

Remove pinion front bearing inner race.

9.

Remove collapsible spacer.

JSDIA0033ZZ

JSDIA0016ZZ

JSDIA0034ZZ

PDIA0760J

DRIVE PINION

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[REAR FINAL DRIVE: R200]

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10. Remove pinion rear bearing inner race and pinion height adjust-

ing washer with the replacer (A).

11. Tap pinion front/rear bearing outer races uniformly using a brass

rod or equivalent to remove them.

CAUTION:

Never damage gear carrier.

Assembly

INFOID:0000000001714237

1.

Install front bearing outer race (1) and rear bearing outer race
(2) using drifts.

CAUTION:

• At first, using a hammer, tap bearing outer race until it

becomes flat to gear carrier.

• Never reuse pinion front and rear bearing outer race.

2.

Select drive pinion height adjusting washer. Refer to

DLN-55,

"Adjustment"

.

PDIA0801J

SDIA0817E

A: Drift [SST: ST30720000 (J-25405)]

B: Drift [SST: KV40105230 (

—

)]

C: Drift bar [SST: ST30611000 (J-25742-1)]

D: Drift [SST: ST30613000 (J-25742-3)]

PDIA0761J