Infiniti Q45. Manual - part 770

 

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Infiniti Q45. Manual - part 770

 

 

REAR FINAL DRIVE ASSEMBLY

RFD-17

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RFD

7.

Set suitable jack to rear final drive assembly.

CAUTION:

Do not place a suitable jack on the rear cover (aluminum
case).

8.

Remove the mounting bolts and nuts connecting to the suspen-
sion member, and remove rear final drive assembly.

CAUTION:

Secure rear final drive assembly to a suitable jack while
removing it.

INSTALLATION

Note the following, and installation is in the reverse order of removal.

Refer to 

RFD-16, "COMPONENTS"

  about each tightening torque.

When installing breather hoses, refer to the figure. (Without
RAS)

CAUTION:

Make sure there are no pinched or restricted areas on the
breather hose caused by bending or winding when install-
ing it.

For installation, the vehicle side end shall be inserted to cross
member. Install metal connector side of this hose to rear cover
by inserting it with aiming painted marking to the front of vehicle.

When oil leaks while removing final drive assembly, check oil
level after the installation. Refer to 

RFD-9, "Checking Differential

Gear Oil"

 .

SDIA1969J

SDIA1970J

PDIA0484E

RFD-18

REAR FINAL DRIVE ASSEMBLY

Disassembly and Assembly

NDS000CO

COMPONENTS

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

28. Breather connector

29. Air breather

: With RAS

: Without RAS

A: Oil seal lip

B: Screw hole

C: After tightening the bolts to the specified torque, tighten the bolts additionally by turning the bolts 31 to 36 degrees.

Refer to 

GI-9, "Components"

  and the followings for the symbols in the figure.

:

Apply gear oil.

:

Apply anti-corrosion oil.

:

Apply Genuine Silicone RTV or equivalent. Refer to 

GI-45, "Recommended Chemical Products and Sealants"

  .

 

:

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

GI-45, "Recommended Chemical Products 

and Sealants"

  .

PDIA1103E

REAR FINAL DRIVE ASSEMBLY

RFD-19

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ASSEMBLY INSPECTION AND ADJUSTMENT

Before inspection and adjustment, drain gear oil.

Total Preload Torque

1.

Secure final drive assembly onto an attachment.

2.

Remove side flanges.

3.

Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.

4.

Rotate drive pinion at least 20 times to check for smooth opera-
tion of the bearing.

5.

Measure total preload with the preload gauge.

NOTE:
Total preload torque = Pinion bearing preload torque + Side
bearing preload torque

If measured value is out of the specification, disassemble it to
check and adjust each part. Adjust the pinion bearing preload and side bearing preload.
Adjust the pinion bearing preload first, then adjust the side bearing preload.

Drive Gear Runout

1.

Remove rear cover. Refer to 

RFD-33, "Differential Assembly"

  .

2.

Fit a dial indicator to the drive gear back face.

3.

Rotate the drive gear to measure runout.

If the runout is outside of the repair limit, check drive gear
assembly condition; foreign material may be caught between
drive gear and differential case, or differential case or drive gear
may be deformed, etc.

CAUTION:

Replace drive gear and drive pinion gear as a set.

Tool number

A: KV38100800 (J-25604-01)

Tool number

A: ST3127S000 (J-25765-A)

Total preload torque:

2.85 - 3.75 N·m (0.29 - 0.38 kg-m, 26 - 33 in-lb)

PDIA0766J

When the preload torque is large

On pinion bearings:

Replace the collapsible spacer.

On side bearings:

Use thinner side bearing adjusting washers by the same amount to 
each side. Refer to 

RFD-38, "Side Bearing Adjusting Washer"

  .

When the preload is small

On pinion bearings:

Tighten the drive pinion lock nut.

On side bearings:

Use thicker side bearing adjusting washers by the same amount to 
each side. Refer to 

RFD-38, "Side Bearing Adjusting Washer"

  .

Runout limit:

0.05 mm (0.0020 in)

SPD886

RFD-20

REAR FINAL DRIVE ASSEMBLY

Tooth Contact

1.

Remove rear cover. Refer to 

RFD-33, "Differential Assembly"

  .

2.

Apply red lead to drive gear.

CAUTION:

Apply red lead to both the faces of 3 to 4 gears at 4 loca-
tions evenly spaced on drive gear.

3.

Rotate drive gear back and forth several times, check drive pin-
ion gear to drive gear tooth contact.

CAUTION:

Check tooth contact on drive side and reverse side.

SPD357

SDIA0570E

SDIA0207E

 

 

 

 

 

 

 

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