Nissan Frontier D22. Manual — part 725
FRONT FINAL DRIVE ASSEMBLY
FFD-17
C
E
F
G
H
I
J
K
L
M
A
B
FFD
2.
Loosen ring gear bolts in a crisscross pattern.
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 differential case.
●
Lock pin is caulked at pin hole mouth on differential case.
DISASSEMBLY OF DIFFERENTIAL SIDE SHAFT
1.
Cut front axle bearing collar with cold chisel.
CAUTION:
Be careful not to damage differential side shaft.
SPD024
SPD025
SPD236A
FFD-18
FRONT FINAL DRIVE ASSEMBLY
2.
Reinstall differential side shaft into extension tube and secure
with bolts. Remove front axle bearing by drawing out differential
side shaft from front axle bearing with puller.
3.
Remove grease seal.
4.
Remove extension tube retainer.
5.
Remove oil seal.
INSPECTION
Ring gear and drive pinion
Check gear teeth for scoring, cracking or chipping. If any damaged part is evident, replace ring gear and drive
pinion as a set (hypoid gear set).
SPD672
SPD647
SPD781
FRONT FINAL DRIVE ASSEMBLY
FFD-19
C
E
F
G
H
I
J
K
L
M
A
B
FFD
Differential case assembly
Check mating surfaces of differential case, side gears, pinion mate
gears, pinion mate shaft and thrust washers.
Bearing
1.
Thoroughly clean bearing.
2.
Check bearing for wear, scratches, pitting or flaking.
Check tapered roller bearing for smooth rotation. If damaged,
replace outer race and inner cone as a set.
ADJUSTMENT OF DIFFERENTIAL CASE ASSEMBLY
For quiet and reliable final drive operation, the following five adjustments must be made correctly:
1.
Side bearing preload. Refer to
FFD-19, "SIDE BEARING PRELOAD"
2.
Pinion gear height. Refer to
FFD-21, "DRIVE PINION GEAR HEIGHT AND PINION BEARING PRE-
.
3.
Pinion bearing preload. Refer to
FFD-21, "DRIVE PINION GEAR HEIGHT AND PINION BEARING PRE-
.
4.
Ring gear to drive pinion backlash. Refer to
FFD-33, "Total Preload Adjustment"
5.
Ring and pinion gear tooth contact pattern. Refer to
SIDE BEARING PRELOAD
NOTE:
A selection of carrier side bearing adjusting washers are required for
successful completion of this procedure.
1.
Make sure all parts are clean and that the bearings are well
lubricated with light oil or “DEXRON
TM
” automatic transmission
.
2.
Place the differential carrier assembly, with side bearings and
bearing races installed, into the final drive housing.
SPD097AA
SPD715
SPD527
FFD-20
FRONT FINAL DRIVE ASSEMBLY
3.
Put the side bearing spacer in place.
CAUTION:
Side bearing spacer is placed on either the right or left
depending upon final drive gear ratio. Be sure to replace it
on the correct side.
4.
Install original side bearing adjusting shims on the differential
case assembly end, opposite the ring gear using Tool.
5.
Install the side bearing caps in their correct locations and tighten
the bearing cap bolts.
6.
Turn the differential case assembly several times to seat the
bearings.
7.
Measure the differential case assembly turning resistance at the
ring gear bolts using Tool.
8.
If the differential case assembly turning resistance is not within
the specification range, increase or decrease the total thickness
of the side bearing adjusting shims until the turning resistance is
correct. If the turning resistance is less than the specified range,
install side bearing adjusting shims of greater thickness; if the
turning resistance is greater than the specification, install thinner
side bearing adjusting shims. Refer to
.
9.
Record the total amount of side bearing adjusting shim thick-
ness required for the correct side bearing preload.
SPD894
Tool number
: KV38100600 (J25267)
SPD986
Bearing cap
bolts
: 88 - 98 N·m (9 - 10 kg-m, 65 - 72 ft-lb)
SPD526
Differential
case assem-
bly turning
resistance
: 34.3 - 39.2 N (3.5 - 4.0 kg, 7.7 - 8.8 lb)
of pulling force at the ring gear bolt
Tool number
(J8129)
WDIA0013E
SPD772
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