NISSAN PICK-UP 1998 Repair Manual

9. Turn drive pinion in both directions several revolutions and
measure pinion bearing preload.
Tool number: ST3127S000
Pinion bearing preload (With front oil seal):
1.1 - 1.7 N´m (11 - 17 kg-cm, 9.5 - 14.8 in-lb)
Pinion bearing preload (Without front oil seal):
1.0 - 1.6 N´m (10 - 16 kg-cm, 8.7 - 13.9 in-lb)
When pinion bearing preload is outside the specifications,
replace pinion bearing adjusting washer and spacer with a
different thickness.
10. Select side retainer adjusting shim.
Refer to ``ADJUSTMENT'', PD-23.
11. Press-fit side bearing outer race into side retainer.
Tool numbers:
VAST30611000
VBST30621000
12. Install side oil seal to side retainer.
Tool number: ST33270000
13. Install differential case assembly.
14. Place side retainer adjusting shims (refer to
``ADJUSTMENT'', PD-23), and O-ring on side retainer, and
install them in final drive housing.
Tool number: ST33720000
lAlign arrows stamped on side retainer and final drive hous-
ing.
15. Measure ring gear-to-drive pinion backlash with a dial indi-
cator.
Ring gear-to-drive pinion backlash:
0.13 - 0.18 mm (0.0051 - 0.0071 in)
lIf backlash is too small, decrease thickness of right shim and
increase thickness of left shim by the same amount.
If backlash is too great, reverse the above procedure.
Never change the total amount of shims as it will change the
bearing preload.
SPD634
SPD332
SPD660
PD420
SPD635
ASSEMBLYR180A
Final Drive Housing (Cont'd)
PD-30

16. Check total preload with Tool.
When checking preload, turn drive pinion in both directions
several times to set bearing rollers.
Tool number: ST3127S000
Total preload:
1.2 - 2.3 N´m
(12 - 23 kg-cm, 10 - 20 in-lb)
lIf preload is too great, add the same amount of shim to each
side.
lIf preload is too small, remove the same amount of shim from
each side.
Never add or remove a different number of shims for each
side as it will change ring gear-to-drive pinion backlash.
17. Recheck ring gear-to-drive pinion backlash because
increase or decrease in thickness of shims will cause change
of ring gear to pinion backlash.
18. Check runout of ring gear with a dial indicator.
Runout limit:
0.05 mm (0.0020 in)
lIf backlash varies excessively in different places, the vari-
ance may have resulted from foreign matter caught between
the ring gear and the differential case.
lIf 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.
19. Check tooth contact. Refer to ``ADJUSTMENT'', PD-26.
20. Install rear cover and gasket.
21. Install extension tube and differential side shaft assembly.
SPD634
SPD561
SPD636
SPD661
ASSEMBLYR180A
Final Drive Housing (Cont'd)
PD-31

2-pinion model
SPD425A
REAR FINAL DRIVEC200
PD-32

4-pinion model
SPD426A
REAR FINAL DRIVEC200
PD-33

Pre-inspection
Before disassembling final drive, perform the following inspec-
tion.
lTotal preload
a. Turn drive pinion in both directions several times to set bear-
ing rollers.
b. Check total preload with Tool.
Tool number: ST3127S000
Total preload:
1.2 - 2.3 N´m
(12 - 23 kg-cm, 10 - 20 in-lb)
lRing gear-to-drive pinion backlash.
Check backlash of ring gear with a dial indicator at several
points.
Ring gear-to-drive pinion backlash:
0.13 - 0.18 mm (0.0051 - 0.0071 in)
lRing gear runout
Check runout of ring gear with a dial indicator.
Runout limit: 0.05 mm (0.0020 in)
lTooth contact
Check tooth contact. Refer to ``ADJUSTMENT'', PD-49.
lSide gear-to-pinion mate gear backlash
Measure clearance between side gear thrust washer and
differential case with a feeler gauge.
Clearance between side gear thrust washer and dif-
ferential case:
Less than 0.15 mm (0.0059 in)
Differential Carrier
1. Remove rear cover and rear cover gasket.
2. Put match marks on one side of side bearing cap with paint
or punch to ensure that it is replaced in proper position dur-
ing reassembly.
Bearing caps are line-bored during manufacture and should
be put back in their original places.
SPD241
SPD196
SPD702
SPD198
SPD714
DISASSEMBLYC200
PD-34

3. Remove side bearing caps.
4. Remove differential case assembly with pry bar.
Keep the side bearing outer races together with their
respective inner cones Ð do not mix them up.
5. Remove pinion nut with Tool.
Tool number: ST38060002
6. Remove companion flange with puller.
SPD202
SPD193
SPD745
SPD204.SPD204
SPD014.SPD014
DISASSEMBLYC200
Differential Carrier (Cont'd)
PD-35

7. Remove sensor rotor with Tools (With ABS models).
Tool numbers:
VAST33061000
VBST30031000
8. Remove ABS sensor unit.
9. Remove drive pinion with soft hammer.
10. Remove front oil seal and pinion front bearing inner cone.
11. Remove pinion bearing outer races with a brass drift.
12. Remove pinion rear bearing inner cone and pinion height
adjusting washer.
Tool number: ST30031000
SPD430A
SPD206
PD349
PD179
DISASSEMBLYC200
Differential Carrier (Cont'd)
PD-36

Differential Case
1. Remove side bearing inner cones.
To prevent damage to bearing, engage puller jaws in
grooves.
Tool numbers:
VAST33051001
VBST33061000
Be careful not to confuse the right and left hand parts.
2. Loosen ring gear bolts in a criss-cross fashion.
3. Tap ring gear off the differential case with a soft hammer.
Tap evenly all around to keep ring gear from binding.
4. Punch off pinion mate shaft lock pin from ring gear side.
Lock pin is calked at pin hole mouth on differential case.
SPD529
SPD022
SPD024
SPD025
DISASSEMBLYC200
PD-37

Ring Gear and Drive Pinion
Check gear teeth for scoring, cracking or chipping. If any dam-
aged part is evident, replace ring gear and drive pinion as a set
(hypoid gear set).
Differential Case Assembly
Check mating surfaces of differential case, side gears, pinion
mate gears, pinion mate shaft, thrust block and thrust washers.
Bearing
1. Thoroughly clean bearing.
2. Check bearings for wear, scratches, pitting or flaking.
Check tapered roller bearing for smooth rotation. If damaged,
replace outer race and inner cone as a set.
SPD584
SPD715
INSPECTIONC200
PD-38

CAUTION:
Do not run engine when only one wheel (rear) is off the
ground.
Preparation for Disassembly
CHECKING DIFFERENTIAL TORQUE
Measure differential torque with Tools.
If it is not within the specifications, inspect components of limited
slip differential.
Differential torque:
88 - 108 N´m
(9.0 - 11.0 kg-m, 65 - 80 ft-lb)
Tool numbers:
VAKV38105110
VBKV38105120
Disassembly
1. Remove couple bolts using a press.
Tool number: ST33081000
2. Separate differential cases A and B.
Draw out component parts (discs and plates, etc.).
Put marks on differential cases so that they can be rein-
stalled in their original positions.
SPD419A
SPD415
SPD420A
LIMITED SLIP DIFFERENTIALC200
PD-39