Infiniti G37 Coupe. Manual - part 447

 

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Infiniti G37 Coupe. Manual - part 447

 

 

DLN-102

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200V]

DIFFERENTIAL ASSEMBLY

• If the tooth contact is near the flank (flank contact), or near the

toe (toe contact), thin pinion height adjusting washers to move
drive pinion farther from drive gear.

BACKLASH

• Before inspection and adjustment, drain gear oil.

1.

Remove rear cover. Refer to 

DLN-92, "M/T : Disassembly"

.

2.

Fit a dial indicator to the drive gear face to measure the back-
lash.

• If the backlash is outside of the specified value, change the

thickness of side bearing adjusting washer.

CAUTION:

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

M/T : Inspection After Disassembly

INFOID:0000000001714276

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

PDIA0441E

Standard

Backlash

: Refer to 

DLN-132, "Back-

lash"

.

When the backlash is large:

Make drive gear back side adjusting washer thicker, 
and drive gear tooth side adjusting washer thinner by 
the same amount.

When the backlash is small:

Make drive gear back side adjusting washer thinner, 
and drive gear tooth side adjusting washer thicker by 
the same amount.

SPD513

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.

DIFFERENTIAL ASSEMBLY

DLN-103

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200V]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

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A/T

A/T : Exploded View

INFOID:0000000001714277

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. Drive gear

15. Differential case B

16. Side gear thrust washer

17. Circular clip

18. Side gear

19. Pinion mate shaft

20. Pinion mate thrust washer

21. Pinion mate gear

22. Viscous coupling

23. Differential case A

24. Bearing cap

25. Filler plug

26. Gasket

27. Rear cover

28. 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.

JSDIA0045GB

DLN-104

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200V]

DIFFERENTIAL ASSEMBLY

A/T : Disassembly

INFOID:0000000001714278

1.

Drain gear oil, if necessary.

2.

Remove side flange.

3.

Remove rear cover mounting bolts.

4.

Remove rear cover to insert the seal cutter (A) [SST:
KV10111100 (J-37228)] between gear carrier and rear cover.

CAUTION:

• Never damage the mating surface.
• Never insert flat-bladed screwdriver, this may damage the

mating surface.

5.

Using two 45 mm (1.77 in) spacers, mount carrier on the attach-
ment (A) [SST: KV38100800 (J-25604-01)].

6.

For proper reinstallation, paint matching marks on one side of
the bearing cap.

CAUTION:

• For matching marks, use paint. Never damage bearing

caps and gear carrier.

• Bearing caps are manufactured as integral molding. Use

the matching marks to them in their original positions.

7.

Remove bearing caps.

JSDIA0029ZZ

JSDIA0030ZZ

PDIA0069E

S-PD343

DIFFERENTIAL ASSEMBLY

DLN-105

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200V]

C

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F

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J

K

L

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A

B

DLN

N

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8.

Lift differential case assembly out with a suitable tool.

• Keep side bearing outer races together with inner race. Do not

mix them up.
Also, keep side bearing adjusting washers together with bear-
ings.

9.

Remove side bearing inner race.
To prevent damage to bearing, engage puller jaws in groove
(

).

CAUTION:

• To prevent damage to the side bearing and drive gear,

place copper plates between these parts and vise.

• It is not necessary to remove side bearing inner race

except when it is replaced.

10. For proper reinstallation, paint matching marks on one differen-

tial case assembly.

CAUTION:

For matching marks, use paint. Never damage differential
case and drive gear.

11. Remove drive gear mounting bolts.
12. Tap drive gear off differential case assembly with a soft hammer.

CAUTION:

Tap evenly all around to keep drive gear from bending.

PDIA0547E

SPD919

A: Puller [SST: ST33051001 (J-22888-20)]

B: Base [SST: ST33061000 (J-8107-2)]

JSDIA0044ZZ

PDIA0496E

 

 

 

 

 

 

 

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