Nissan Pathfinder. Manual — part 411

DLN-86

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DRIVE PINION

DRIVE PINION

Exploded View

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1.

Oil seal

2.

Transfer cover

3.

Filler plug

4.

Gasket

5.

Drain plug

6.

Oil seal

JSDIA4191GB

DRIVE PINION

DLN-87

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Disassembly

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1. Remove pinion bearing assembly mounting bolts.

2. Lightly tap companion flange with a plastic hammer to remove

drive pinion assembly (1).

3. Remove the O-ring from pinion bearing.
4. Remove the pinion lock nut.

7.

O-ring

8.

Ring gear bearing adjusting shim
(transfer cover side)

9.

Ring gear bearing (transfer cover
side)

10. Drive shaft oil seal

11. Ring gear shaft

12. Ring gear bearing (transfer case

side)

13. Ring gear bearing adjusting shim

(transfer case side)

14. Ring gear

15. Baffle plate

16. Transfer case

17. Plug

18. O-ring

19. Oil seal

20. Dowel pin

21. Drive pinion

22. Drive pinion adjusting shim

23. O-ring

24. Pinion bearing assembly

25. Oil seal

26. Dust cover

27. Companion flange

28. Pinion lock nut
A. Oil seal lip

B. Comply with the assembly proce-

dure when tightening. Refer to

DLN-

88, "Assembly"

.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Apply gear oil.

*

: Apply anti-corrosive oil.

: Apply multi-purpose grease.

: Select with proper thickness.

JSDIA3951ZZ

JSDIA3952ZZ

DLN-88

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[TRANSFER: TY21C]

DRIVE PINION

5. Remove drive pinion from pinion bearing assembly with drift (A)

(commercial service tool) and replacer (B) (commercial service

tool).

6. Remove adjusting shim.
7. Remove companion flange.
8. Remove the dust cover.
9. Remove the oil seal.
10. Perform inspection after disassembly. Refer to

DLN-93, "Inspec-

tion"

.

Assembly

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1. Select drive pinion adjusting shim. Refer to

DLN-89, "Adjustment"

.

2. Assemble the selected drive pinion adjusting shim to drive pinion.
3. Install the drive pinion to pinion bearing assembly with drift (commercial service tool).

CAUTION:

• Never reuse pinion bearing assembly.

• Apply gear oil to pinion bearing part.

4. Install oil seal to pinion bearing assembly with drift (A) (commer-

cial service tool).

CAUTION:

• Never reuse the oil seal.

• When installing, never incline oil seal.

• Apply multi-purpose grease onto oil seal lips, and gear oil

onto the circumference of the oil seal.

5. Install dust cover.

NOTE:

Tighten dust cover together with pinion bearing assembly.

6. Install companion flange (1) to pinion bearing with drift (A) (com-

mercial service tool).

7. Apply anti-corrosive oil to the thread and seat of the lock nut,

and adjust the pinion lock nut tightening torque and pinion bear-

ing preload torque, using a preload gauge.

a. Install pinion lock nut, and then tighten to the specified torque.

CAUTION:

• Never reuse pinion lock nut.

• Check that pinion lock nut is seated on the companion flange.

b. After tightening pinion lock nut to the specified torque, retighten the pinion lock nut by 25 degrees.
c.

Measure the pinion bearing preload.

8. Apply multi-purpose grease lightly and evenly onto an O-ring, and install it to the pinion bearing assembly.

CAUTION:

• Never reuse O-ring.

• When installing O-ring, never use a tool.

• Never damage O-ring.

JSDIA3953ZZ

JSDIA3996ZZ

Pinion lock nut
tightening torque

: 90

±9 N·m (9.2±0.92kg-m, 66±7 ft-lb)

Pinion bearing preload

: Refer to

DLN-98, "Preload Torque"

.

JSDIA3997ZZ

DRIVE PINION

DLN-89

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9. Install drive pinion assembly, and apply anti-corrosive oil onto

thread and seats on the mounting bolts. Tighten to the specified

torque.

NOTE:

Tighten dust cover together with pinion bearing assembly.

10. Check backlash, tooth contact, total preload and companion

flange runout. Refer to

DLN-89, "Adjustment"

.

CAUTION:

Measure the total preload without oil seals of transfer cover

and transfer case.

Adjustment

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ADJUSTING SHIM SELECTION

Measurement point

Select adjusting shim of T1, T2, and T3, respectively, by using the following equation.

T1 [Ring gear bearing adjusting shim (transfer case side)]

• T1 = A

−(B +X/2) +C +W −V −F −(M/100) +0.071 mm (0.0028 in)

JSDIA3951ZZ

JSDIA4034ZZ