height INFINITI QX4 2001 Factory Repair Manual

SPD670
9. Take out drive pinion together with rear bearing inner cone,
drive pinion bearing spacer and pinion bearing adjusting
washer.
10. Remove front oil seal and pinion front bearing inner cone.
PD349
11. Remove pinion bearing outer races with a brass drift.
SPD209
12. Remove pinion rear bearing inner cone and drive pinion height
adjusting washer.
Tool number: ST30031000 (J22912-01)
SPD207A
DIFFERENTIAL CASENBPD0018S031. Remove side bearing inner cones.
To prevent damage to bearing, engage puller jaws in grooves.
Tool number:
A ST33051001 (J22888-20)
B ST33061000 (J8107-2)
SPD022
Be careful not to confuse the right and left hand parts.
Keep bearing and bearing race for each side together.
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FRONT FINAL DRIVER200A
Disassembly (Cont'd)
PD-21

AdjustmentNBPD0020For quiet and reliable final drive operation, the following five adjust-
ments must be made correctly:
1. Side bearing preload
2. Pinion gear height
3. Pinion bearing preload
4. Ring gear-to-pinion backlash. Refer to SDS, PD-37.
5. Ring and pinion gear tooth contact pattern
SPD527
SIDE BEARING PRELOADNBPD0020S01A selection of carrier side bearing adjusting washer is
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 ªDEXRON
TMº type automatic trans-
mission fluid.
2. Place the differential carrier, with side bearings and bearing
races installed, into the final drive housing.
SPD894
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.
SPD986
4. Using Tool, install original carrier side bearing preload shims
on the carrier end, opposite the ring gear.
Tool number: KV38100600 (J25267)
SPD526
5. Install the side bearing caps in their correct locations and
torque the bearing cap retaining bolts.
Specification:
88 - 98 N´m (9 - 10 kg-m, 65 - 72 ft-lb)
6. Turn the carrier several times to seat the bearings.
FRONT FINAL DRIVER200A
Adjustment
PD-24

SPD194A
7. Measure the turning torque of the carrier at the ring gear retain-
ing bolts with a spring gauge, J8129.
Specification:
34.3 - 39.2 N (3.5 - 4.0 kg, 7.7 - 8.8 lb) of pulling force
at the ring gear bolt
SPD772
8. If the carrier turning torque is not within the specification range,
increase or decrease the total thickness of the side bearing
adjusting washers until the turning torque is correct. If the
turning torque is less than the specified range, install washers
of greater thickness; if the turning torque is greater than the
specification, install thinner washers. See the SDS section for
washer dimensions and part numbers.
9. Record the total amount of washer thickness required for the
correct carrier side bearing preload.
SPD668
10. Remove the carrier from the final drive housing, saving the
selected preload washers for later use during the assembly of
the final drive unit.
SPD769
PINION GEAR HEIGHT AND PINION BEARING
PRELOAD
NBPD0020S021. Make sure all parts are clean and that the bearings are well
lubricated.
2. Assemble the pinion gear bearings into the pinion pre-load
shim selector Tool, J34309.
SPD197A
IFront Pinion BearingÐ make sure the J34309-3 front pinion
bearing seat is secured tightly against the J34309-2 gauge
anvil. Then turn the front pinion bearing pilot, J34309-5, to
secure the bearing in its proper position.
IRear Pinion BearingÐ the rear pinion bearing pilot, J34309-
15, is used to center the rear pinion bearing only. The rear
pinion bearing locking seat, J34309-4, is used to lock the bear-
ing to the assembly.
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FRONT FINAL DRIVER200A
Adjustment (Cont'd)
PD-25

SPD893
3. Place the pinion preload shim selector Tool, J34309-1, gauge
screw assembly with the pinion rear bearing inner cone
installed into the final drive housing.
SPD199A
4. Assemble the front pinion bearing inner cone and the J34309-2
gauge anvil together with the J34309-1 gauge screw in the
final drive housing. Make sure that the pinion height gauge
plate, J34309-16, will turn a full 360 degrees, and tighten the
two sections together by hand.
SPD770
5. Turn the assembly several times to seat the bearings.
SPD234A
6. Measure the turning torque at the end of the J34309-2 gauge
anvil using torque wrench J25765A.
Turning torque specification:
1.0 - 1.3 N´m (10 - 13 kg-cm, 8.7 - 11.3 in-lb)
SPD208A
7. Place the J34309-1 ªR200Aº pinion height adapter onto the
gauge plate and tighten it by hand.
CAUTION:
Make sure all machined surfaces are clean.
FRONT FINAL DRIVER200A
Adjustment (Cont'd)
PD-26

SPD209A
PINION BEARING PRELOAD WASHER SELECTION
8. Place the solid pinion bearing spacer, small end first, over the
J34309-2 gauge anvil and seat the small end squarely against
the tip of the J34309-1 gauge screw in the tool recessed por-
tion.
SPD773
SPD210A
SPD774
9. Select the correct thickness of pinion bearing preload adjust-
ing washer using a standard gauge of 3.5 mm (0.138 in) and
your J34309-101 feeler gauge. The exact measure you get
with your gauges is the thickness of the adjusting washer
required. Select the correct washer.
Drive pinion bearing preload adjusting washer:
Refer to SDS, PD-37.
10. Set your selected, correct pinion bearing preload adjusting
washer aside for use when assembling the pinion gear and
bearings into the final drive.
SPD211A
PINION HEIGHT ADJUSTING WASHER SELECTION
11. Now, position the side bearing discs, J25269-4, and arbor
firmly into the side bearing bores.
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FRONT FINAL DRIVER200A
Adjustment (Cont'd)
PD-27

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 ªR200Aº 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 ªpin-
ion head numberº.
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 ªpinion head height numberº, 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 DRIVER200A
Adjustment (Cont'd)
PD-28

Pinion Head Height NumberAdd or Remove from the Standard
Pinion Height Washer Thickness
Measurement
þ6 Add 0.06 mm (0.0024 in)
þ5 Add 0.05 mm (0.0020 in)
þ4 Add 0.04 mm (0.0016 in)
þ3 Add 0.03 mm (0.0012 in)
þ2 Add 0.02 mm (0.0008 in)
þ1 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 CONTACTNBPD0020S03Gear 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.
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FRONT FINAL DRIVER200A
Adjustment (Cont'd)
PD-29

SPD554
6. Install differential case assembly on ring gear.
7. Apply locking agent [Locktite (stud lock) or equivalent] to ring
gear bolts, and install them.
Tighten bolts in a criss-cross pattern, lightly tapping bolt head
with a hammer.
PD353
8. Press-fit side bearing inner cones on differential case with Tool.
Tool number:
A KV38100300 (J25523)
B ST33061000 (J8107-2)
SPD679
FINAL DRIVE HOUSINGNBPD0021S031. Press-fit front and rear bearing outer races with Tools.
Tool number:
A ST30611000 (J25742-1)
B ST30621000 (J25742-5)
C ST30613000 (J25742-3)
SPD377
2. Select drive pinion height adjusting washer and pinion bearing
adjusting washer. Refer to ªPINION GEAR HEIGHT AND PIN-
ION BEARING PRELOADº, PD-25.
3. Install drive pinion height adjusting washer in drive pinion, and
press-fit pinion rear bearing inner cone in it, using press and
Tool.
Tool number:
ST30901000 (J26010-01)
FRONT FINAL DRIVER200A
Assembly (Cont'd)
PD-32

Total Preload AdjustmentNBPD0022S05
Total preload N´m (kg-cm, in-lb) P1+ [0.3 - 1.5 (3 - 15, 2.6 - 13.0)]
Ring gear backlash mm (in) 0.10 - 0.15 (0.0039 - 0.0059)
P1: Drive pinion preload
Drive Pinion Height AdjustmentNBPD0022S06
Available pin-
ion height
adjusting
washersThickness mm (in) Part number*
3.09 (0.1217)
3.12 (0.1228)
3.15 (0.1240)
3.18 (0.1252)
3.21 (0.1264)
3.24 (0.1276)
3.27 (0.1287)
3.30 (0.1299)
3.33 (0.1311)
3.36 (0.1323)
3.39 (0.1335)
3.42 (0.1346)
3.45 (0.1358)
3.48 (0.1370)
3.51 (0.1382)
3.54 (0.1394)
3.57 (0.1406)
3.60 (0.1417)
3.63 (0.1429)
3.66 (0.1441)38154-P6017
38154-P6018
38154-P6019
38154-P6020
38154-P6021
38154-P6022
38154-P6023
38154-P6024
38154-P6025
38154-P6026
38154-P6027
38154-P6028
38154-P6029
38154-P6030
38154-P6031
38154-P6032
38154-P6033
38154-P6034
38154-P6035
38154-P6036
*: Always check with the Parts Department for the latest parts information.
Drive Pinion Preload AdjustmentNBPD0022S07
Drive pinion bearing preload adjusting method Adjusting washer and spacer
Drive pinion preload with front oil seal N´m (kg-cm, in-lb) [P
1] 1.1 - 1.4 (11 - 14, 9.5 - 12.2)
Available drive
pinion bearing
preload adjust-
ing washersThickness mm (in) Part number*
3.81 (0.1500)
3.83 (0.1508)
3.85 (0.1516)
3.87 (0.1524)
3.89 (0.1531)
3.91 (0.1539)
3.93 (0.1547)
3.95 (0.1555)
3.97 (0.1563)
3.99 (0.1571)
4.01 (0.1579)
4.03 (0.1587)
4.05 (0.1594)
4.07 (0.1602)
4.09 (0.1610)38125-61001
38126-61001
38127-61001
38128-61001
38129-61001
38130-61001
38131-61001
38132-61001
38133-61001
38134-61001
38135-61001
38136-61001
38137-61001
38138-61001
38139-61001
Available drive
pinion bearing
preload adjust-
ing spacersLength mm (in) Part number*
54.50 (2.1457)
54.80 (2.1575)
55.10 (2.1693)
55.40 (2.1811)
55.70 (2.1929)
56.00 (2.2047)38165-B4000
38165-B4001
38165-B4002
38165-B4003
38165-B4004
38165-61001
*: Always check with the Parts Department for the latest parts information.
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FRONT FINAL DRIVER200A
Service Data and Specifications (SDS) (Cont'd)
PD-37

Tool number
(Kent-Moore No.)
Tool nameDescription
ST33190000
(J25523)
Differential side bearing
drift
NT085
Installing side bearing inner cone
a: 52 mm (2.05 in) dia.
b: 45.5 mm (1.791 in) dia.
c: 34 mm (1.34 in) dia.
ST33081000
(Ð)
Side bearing puller
adapter
NT431
Installing side bearing inner cone
a: 43 mm (1.69 in) dia.
b: 33.5 mm (1.319 in) dia.
ST30611000
(J25742-1)
Drift
NT090
Installing pinion rear bearing outer race
(Use with ST30621000 or ST30613000)
ST30621000
(J25742-5)
Drift
NT073
Installing pinion rear bearing outer race
a: 79 mm (3.11 in) dia.
b: 59 mm (2.32 in) dia.
ST30613000
(J25742-3)
Drift
NT073
Installing pinion front bearing outer race
(Use with ST30611000)
a: 72 mm (2.83 in) dia.
b: 48 mm (1.89 in) dia.
KV381025S0
(Ð)
Oil seal fitting tool
1 ST30720000
(J25405)
Drift bar
2 KV38102510
(Ð)
Drift
NT525
Installing front oil seal
a: 77 mm (3.03 in) dia.
b: 55 mm (2.17 in) dia.
c: 71 mm (2.80 in) dia.
d: 65 mm (2.56 in) dia.
(J34309)
Differential shim selec-
tor
NT134
Adjusting bearing pre-load and gear height
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REAR FINAL DRIVEH233B
Preparation (Cont'd)
PD-39