Nissan Frontier D22. Instruction — part 728

FRONT FINAL DRIVE ASSEMBLY

FFD-29

C

E

F

G

H

I

J

K

L

M

A

B

FFD

2.

Fit pinion mate shaft to differential case so that it meets drive
pinion mate shaft lock pin holes.

3.

Adjust backlash between side gear and drive pinion mate gear
by selecting side gear thrust washer.
Refer to

FFD-33, "Side Gear Adjustment"

.

4.

Install drive pinion mate shaft lock pin with a punch.

●

Make sure drive pinion mate shaft lock pin is flush with case.

5.

Apply gear oil to gear tooth surfaces and thrust surfaces and
check to see they turn properly.

6.

Install differential case assembly on ring gear.

7.

Apply Genuine Medium Strength Thread Locking Sealant or
equivalent to ring gear bolts, and install them.

●

Refer to

MA-12, "RECOMMENDED FLUIDS AND LUBRI-

CANTS"

.

●

Tighten ring gear bolts in a crisscross pattern.

8.

Press-fit side bearing inner cones on differential case with Tool.

Side gear to drive pin-
ion mate gear (Clear-
ance between side gear
thrust washer and dif-
ferential case)

: Less than 0.15 mm
(0.0059 in)

SPD258

SPD030

SPD322

SPD554

Tool numbers

A

: KV38100300 (J25523)

B

: ST33061000 (J8107-2)

PD353

FFD-30

FRONT FINAL DRIVE ASSEMBLY

INSTALLATION OF DIFFERENTIAL CASE ASSEMBLY

1.

Select side bearing adjusting washer. Refer to

FFD-19, "SIDE

BEARING PRELOAD"

.

2.

Install differential case assembly with side bearing outer races
into final drive housing.

3.

Insert left and right side bearing adjusting shims in place
between side bearing outer races and final drive housing.

4.

Drive in side bearing spacer using Tool.

5.

Align mark on bearing cap with that on final drive housing and
install bearing cap on final drive housing.

SPD527

SPD558

Tool number

: KV38100600 (J25267)

SPD559

SPD526

FRONT FINAL DRIVE ASSEMBLY

FFD-31

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E

F

G

H

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M

A

B

FFD

6.

Apply multi-purpose grease to cavity at sealing lips of side
flange oil seal. Install side flange oil seal using Tool.

7.

Measure ring gear to drive pinion backlash with a dial indicator.

●

If backlash is too small, decrease thickness of right side bear-
ing adjusting shim and increase thickness of left side bearing
adjusting shim by the same amount.

●

If backlash is too great, reverse the above procedure.

●

Never change the total amount of side bearing adjusting
shims as it will change the bearing preload.

8.

Check total preload using Tool.

●

When checking preload, turn drive pinion in both directions
several times to set bearing rollers.

●

If preload is too great, remove the same amount of side bear-
ing adjusting shim from each side.

●

If preload is too small, add the same amount of side bearing
adjusting shim to each side.

●

Never add or remove a different number of side bearing
adjusting shims for each side as it will change ring gear to
drive pinion backlash.

9.

Recheck ring gear to drive pinion backlash because increase or
decrease in thickness of side bearing adjusting shims will cause
change of ring gear to drive pinion backlash.

●

If the backlash varies greatly when the runout of the ring gear
is within a specified range, the hypoid gear set or differential case should be replaced.

Tool number

: KV38100200 (J26233)

SPD560

Ring gear to drive
pinion backlash

: 0.10 - 0.15 mm (0.0039 - 0.0059 in)

SPD513

Total preload

: 1.4 - 1.7 N·m (14 - 17 kg-cm,
12 - 15 in-lb)

Tool number

: ST3127S000 (J25765-A)

SPD664

SPD561

FFD-32

FRONT FINAL DRIVE ASSEMBLY

10. Check ring gear runout with a dial indicator.

●

If ring gear runout varies excessively in different places, the
variance may have resulted from foreign matter caught
between the ring gear and the differential case.

11. Check tooth contact. Refer to

FFD-25, "TOOTH CONTACT"

.

12. Install rear cover and a new gasket.

13. Install differential side shaft assembly.

14. Install differential side flange.

Ring gear
runout limit

: 0.05 mm (0.0020 in)

SPD524

Rear cover bolts

: 39 - 49 N·m (4 - 5 kg-m, 29 - 36 ft-lb)

Extension tube retainer
bolt and nut

: 34 - 44 N·m (3.5 - 4.5 kg-m,
25 - 33 ft-lb)

SPD682

Differential side flange
bolt

: 31 - 42 N·m (3.2 - 4.3 kg-m,
23 - 31 ft-lb)