Infiniti M35/M45 Y50. Manual - part 1024

REAR FINAL DRIVE ASSEMBLY

RFD-23

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RFD

7.

Remove bearing caps.

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 it is replaced.

S-PD343

PDIA0547E

SPD527

Tool number

 A: ST33051001 (J-22888-20)

 B: ST33061000 (J-8107-2)

PDIA0758J

RFD-24

REAR FINAL DRIVE ASSEMBLY

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

tial case assembly.

CAUTION:

For matching marks, use paint. Do not 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.

13. Remove lock pin of pinion mate shaft with a punch from drive

gear side.

14. Remove pinion mate shaft.

15. Turn pinion mate gear, then remove pinion mate gear, pinion

mate thrust washer, side gear and side gear thrust washer from
differential case.

Drive Pinion Assembly

1.

Remove differential assembly. Refer to 

RFD-22, "Differential Assembly"

 .

PDIA0496E

PDIA0759J

SDIA0031J

SDIA0032J

REAR FINAL DRIVE ASSEMBLY

RFD-25

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RFD

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. Do not 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 puller.

5.

Press drive pinion assembly out of gear carrier.

CAUTION:

Do not 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.

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

ing washer with the replacer.

PDIA0837J

PDIA0750J

SDIA1129E

PDIA0760J

Tool number

A: ST30031000 (J-22912-01)

PDIA0801J

RFD-26

REAR FINAL DRIVE ASSEMBLY

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

equivalent to removed.

CAUTION:

Be careful not to damage gear carrier.

INSPECTION AFTER DISASSEMBLY

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

ADJUSTMENT AND SELECTION OF ADJUSTING WASHERS
Differential Side Gear Clearance

●

Assemble the differential parts if they are disassembled. Refer to 

RFD-33, "Differential Assembly"

 .

1.

Place differential case straight up so that side gear to be mea-
sured comes upward.

SDIA0817E

Content

Conditions and Measures

Hypoid gear

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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 

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Whenever disassembled, replace.

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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.

PDIA0460E