Infiniti QX4 (R50). Manual — part 518
SPD247
I
Ring gear runout
Check runout of ring gear with a dial indicator.
Runout limit:
0.08 mm (0.0031 in)
SPD004
I
Tooth contact
Check tooth contact. Refer to “TOOTH CONTACT”, PD-56.
I
Side gear to pinion mate gear backlash
Measure clearance between side gear thrust washer and dif-
ferential case with a feeler gauge.
Clearance between side gear thrust washer and differ-
ential case:
0.10 - 0.20 mm (0.0039 - 0.0079 in)
SPD683
DIFFERENTIAL CARRIER
NBPD0033S02
1.
Mount final drive assembly on Tool.
Tool number:
ST06340000 (J24310, J34310)
SPD249
2.
Put matchmarks on one side of side bearing cap with paint or
punch to ensure that it is replaced in proper position during
reassembly.
Bearing caps are line-bored during manufacture and should
be put back in their original places.
SPD250
3.
Remove side lock fingers and side bearing caps.
REAR FINAL DRIVE
H233B
Disassembly (Cont’d)
PD-44
SPD684
4.
Remove side bearing adjuster with Tool.
Tool number: ST32580000 (J34312)
SPD685
5.
Remove differential case assembly with a pry bar.
SPD011
Be careful to keep the side bearing outer races together with
their respective inner cones — do not mix them up.
SPD480A
6.
Remove drive pinion nut with Tool.
Tool number: KV38108300 (J44195)
7.
Remove companion flange with puller.
SPD687
8.
Take out drive pinion together with pinion rear bearing inner
cone, drive pinion bearing spacer and pinion bearing adjusting
shim.
GI
MA
EM
LC
EC
FE
AT
TF
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
REAR FINAL DRIVE
H233B
Disassembly (Cont’d)
PD-45
SPD563
9.
Remove front oil seal and pinion front bearing inner cone.
10. Remove pinion bearing outer races with a brass drift.
SPD018
11. Remove pinion rear bearing inner cone and drive pinion adjust-
ing washer.
Tool number: ST30031000 (J22912-01)
SPD207A
DIFFERENTIAL CASE
NBPD0033S03
1.
Remove side bearing inner cones.
To prevent damage to bearing, engage puller jaws in
groove.
Tool number:
A ST33051001 (J22888-20)
B ST33061000 (J8107-2)
SPD022
Be careful not to confuse the left and right hand parts.
Keep bearing and bearing race for each side together.
SPD024
2.
Loosen ring gear bolts in a criss-cross pattern.
3.
Tap ring gear off differential case with a soft hammer.
Tap evenly all around to keep ring gear from binding.
REAR FINAL DRIVE
H233B
Disassembly (Cont’d)
PD-46
SPD025
4.
Drive out pinion mate shaft lock pin, with punch from ring gear
side.
Lock pin is calked at pin hole mouth on differential case.
Inspection
NBPD0034
RING GEAR AND DRIVE PINION
NBPD0034S01
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).
SPD530-A
DIFFERENTIAL CASE ASSEMBLY
NBPD0034S02
Check mating surfaces of differential case, side gears, pinion mate
gears, pinion mate shaft, and thrust washers.
SPD715
BEARING
NBPD0034S03
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.
SPD415
Limited Slip Differential
PREPARATION FOR DISASSEMBLY
NBPD0035
Checking Differential Torque
NBPD0035S01
Measure differential torque with Tool.
If it is not within the specifications, inspect components of limited
slip differential.
Differential torque:
88 - 108 N·m (9 - 11 kg-m, 65 - 80 ft-lb)
Tool number: A KV38105210 (
—
)
Tool number: B KV38105220 (
—
)
GI
MA
EM
LC
EC
FE
AT
TF
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
REAR FINAL DRIVE
H233B
Disassembly (Cont’d)
PD-47
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