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
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
.
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]
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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
Refer to
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]
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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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