Infiniti QX4 (R50). Manual — part 514
SPD212A
12. Install the side bearing caps and tighten the cap bolts.
Specification:
88 - 98 N·m (9 - 10 kg-m, 65 - 72 ft-lb)
SPD204A
13. Select the correct standard pinion height adjusting washer
thickness by using a standard gauge of 3.0 mm (0.118 in) and
your J34309-101 feeler gauge. Measure the gap between the
J34309-11 “R200A” pinion height adapter and the arbor.
SPD775
14. Write down your exact total measurement.
SPD542
15. Correct the pinion height washer size by referring to the “pin-
ion head number”.
There are two numbers painted on the pinion gear. The first
one refers to the pinion and ring gear as a matched set and
should be the same as the number on the ring gear. The sec-
ond number is the “pinion head height number”, and it refers
to the ideal pinion height from standard for quietest operation.
Use the following chart to determine the correct pinion height
washer. Refer to SDS, PD-37.
FRONT FINAL DRIVE
R200A
Adjustment (Cont’d)
PD-28
Pinion Head Height Number
Add or Remove from the Standard
Pinion Height Washer Thickness
Measurement
−6
Add 0.06 mm (0.0024 in)
−5
Add 0.05 mm (0.0020 in)
−4
Add 0.04 mm (0.0016 in)
−3
Add 0.03 mm (0.0012 in)
−2
Add 0.02 mm (0.0008 in)
−1
Add 0.01 mm (0.0004 in)
0
Use the selected washer thickness
+1
Subtract 0.01 mm (0.0004 in)
+2
Subtract 0.02 mm (0.0008 in)
+3
Subtract 0.03 mm (0.0012 in)
+4
Subtract 0.04 mm (0.0016 in)
+5
Subtract 0.05 mm (0.0020 in)
+6
Subtract 0.06 mm (0.0024 in)
SPD205A
16. Remove the J34309 pinion preload shim selector tool from the
final drive housing and disassemble to retrieve the pinion bear-
ings.
TOOTH CONTACT
NBPD0020S03
Gear tooth contact pattern check is necessary to verify correct
relationship between ring gear and drive pinion.
Hypoid gear sets which are not positioned properly in relation to
one another may be noisy, or have short life, or both. With a pat-
tern check, the most desirable contact for low noise level and long
life can be assured.
SPD357
1.
Thoroughly clean ring gear and drive pinion teeth.
2.
Sparingly apply a mixture of powdered ferric oxide and oil or
equivalent to 3 or 4 teeth of ring gear drive side.
GI
MA
EM
LC
EC
FE
AT
TF
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
FRONT FINAL DRIVE
R200A
Adjustment (Cont’d)
PD-29
SPD677
3.
Hold companion flange steady by hand and rotate the ring gear
in both directions.
SPD007-B
SPD782-A
SPD654-A
Assembly
NBPD0021
DIFFERENTIAL SIDE SHAFT
NBPD0021S01
1.
Install oil seal and grease seal.
FRONT FINAL DRIVE
R200A
Adjustment (Cont’d)
PD-30
SPD655
2.
Install extension tube retainer, rear axle bearing and rear axle
shaft bearing collar on differential side shaft.
SPD552
DIFFERENTIAL CASE
NBPD0021S02
1.
Install side gears, pinion mate gears and thrust washers into
differential case.
SPD258
2.
Fit pinion mate shaft to differential case so that it meets lock
pin holes.
3.
Adjust backlash between side gear and pinion mate gear by
selecting side gear thrust washer.
Refer to SDS, PD-36.
Backlash between side gear and pinion mate gear
(Clearance between side gear thrust washer and differ-
ential case):
Less than 0.15 mm (0.0059 in)
SPD030
4.
Install pinion mate shaft lock pin with a punch.
Make sure lock pin is flush with case.
SPD322
5.
Apply gear oil to gear tooth surfaces and thrust surfaces and
check to see they turn properly.
GI
MA
EM
LC
EC
FE
AT
TF
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
FRONT FINAL DRIVE
R200A
Assembly (Cont’d)
PD-31
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