Infiniti M45 (Y34). Manual - part 725

 

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Infiniti M45 (Y34). Manual - part 725

 

 

REAR FINAL DRIVE ASSEMBLY

RFD-13

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Pre-Inspection

ADS0001N

Before disassembling final drive, drain off oil from the gear and remove the rear cover. Then, perform the fol-
lowing inspection.

TOTAL PRELOAD

1.

Turn drive pinion in both directions several times to set bearing
rollers.

2.

Check total preload with Tool.

DRIVE GEAR TO DRIVE PINION BACKLASH

Check drive gear to drive pinion backlash with a dial gauge at sev-
eral points.

DRIVE GEAR RUNOUT

Check runout of drive gear with a dial gauge.

1.

Drive pinion nut

2.

Companion flange (Rebro joint type) 3.

Front oil seal

4.

Pinion front bearing 

5.

Pinion bearing adjusting spacer
 (Collapsible spacer)

6.

Pinion rear bearing 

7.

Pinion height adjusting washer

8.

Drive pinion

9.

Side oil seal 

10. Drive gear

11.

Pinion mate shaft

12. Look pin

13. Pinion mate gear

14. Pinion mate thrust washer

15. Side gear

16. Side gear thrust washer

17. Differential case

18. Side bearing

19. Side bearing adjusting washer

20. Bearing cap

21. Rear cover

22. Filler plug

23. Drain plug

24. Gear carrier

25. Circular clip

26. Gasket

Tool number

: ST3127S000 (see J25765-A)

Total preload 
(with oil seal)

: 2.84 - 3.75 N·m (0.29 - 0.38 kg-m, 26 - 
33 in-lb)

SDIA1007E

Drive gear backlash

: 0.10 - 0.15 mm (0.0039 - 0.0059 in)

SPD513

Runout limit  

: 0.05 mm (0.0020 in) less

SPD886

RFD-14

REAR FINAL DRIVE ASSEMBLY

COMPANION FLANGE RUNOUT

1.

Fit a test indicator to the inner side of the companion flange
(socket diameter).

2.

Rotate the companion flange to check for runout.

3.

If the runout value is outside the repair limit, follow the procedure
below to adjust.

a.

Check for runout while changing the phase between companion
flange and drive pinion gear by 90

°

 step, and search for the

point where the runout is the minimum.

b.

If the runout value is still outside of the limit after the phase has
been changed, replace the companion flange.

c.

If the runout value still outside of the limit after the companion flange has been replaced, check pinion
bearing and drive pinion assembly. 

TOOTH CONTACT

Check tooth contact. Refer to 

RFD-25, "TOOTH CONTACT"

 .

Disassembly and Assembly

ADS0001O

REMOVAL OF DIFFERENTIAL CASE ASSEMBLY

1.

Using two 45 mm (1.77 in) spacers, mount carrier on Tool.

2.

For proper reinstallation, paint matching marks on one side of
the bearing cap.
Bearing caps are line-board during manufacture. Replace them
in their proper positions.

3.

Remove bearing caps.

Runout limit

: 0.08 mm (0.0031 in)

SDIA2053E

Tool number

: KV38100800 (J25604–01)

SDIA1008E

SPD889

S-PD343

REAR FINAL DRIVE ASSEMBLY

RFD-15

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4.

Lift differential case assembly out with Tool.

Keep the side bearing outer races together with inner race.
Do not mix them up.
Also, keep adjusting washers together with bearings.

REMOVAL OF DRIVE PINION ASSEMBLY

1.

Put matching marks on companion flange and drive pinion with
paint.

2.

Loosen drive pinion nut with tool.

3.

Remove companion flange using the suitable puller.

Tool number

: HT72400000 (  –  )

S-PD344

SPD919

Tool number

: KV40104000 ( – )

SDIA2054E

SDIA1129E

RFD-16

REAR FINAL DRIVE ASSEMBLY

4.

Take out drive pinion (together with rear bearing inner race, pin-
ion bearing adjusting spacer).

5.

Remove front oil seal. Refer to 

RFD-7, "FRONT OIL SEAL"

 .

6.

Remove pinion front bearing inner race.

7.

Remove side oil seal. Refer to 

RFD-9, "SIDE OIL SEAL"

 .

8.

Remove pinion bearing outer races with a brass drift.

9.

Remove pinion rear bearing inner race and drive pinion height
adjusting washer with Tool.

SPD892

SDIA0817E

Tool number

: ST30031000 (J22912-01)

S-PD179

 

 

 

 

 

 

 

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