height adjustment INFINITI QX4 2001 Factory User Guide

S/VCSW - Wiring diagram ...........................EC-493
Swirl control valve control solenoid
valve .........................................................EC-458
Swirl control valve control vacuum
check switch .............................................EC-493
SWL/V - Wiring diagram ..............................EC-458
Symbols and abbreviations .............................GI-10
Symptom matrix chart...................................EC-118
System readiness test (SRT) code ................EC-61
T
2-4WD shift solenoid valve............................TF-111
Tachometer .....................................................EL-94
Tail lamp ..........................................................EL-61
TAIL/L - Wiring diagram ..................................EL-63
TCM circuit diagram ........................................AT-13
TCM inspection table ......................................AT-92
TFTS - Wiring diagram .................................EC-311
THEFT - Wiring diagram ...............................EL-300
Theft warning system....................................EL-294
Thermometer .................................................EL-110
Thermostat ......................................................LC-16
Three way catalyst function (Left bank) .......EC-347
Three way catalyst function (Right
bank) .........................................................EC-347
Three way catalyst precautions.........................GI-6
Throttle bodies ...............................................EM-12
Throttle position sensor (TPS) .....................EC-174
Throttle position sensor adjustment .............EC-101
Throttle position switch ...........EC-431, AT-184, 264
Tie-rod .............................................................ST-21
Tie-rod ball joints.............................................ST-21
Tightening torque of standard bolts.................GI-50
Timing chain ...................................................EM-20
Tire rotation ....................................................MA-24
Tire size ...........................................................GI-44
TLID - Wiring diagram ..................................EL-179
Tooth contact (front final drive 4WD) .............PD-29
Tooth contact diff. ...........................................PD-56
Torque converter installation .........................AT-278
Torque convertor clutch solenoid
valve ..................................................AT-152, 161
Tow truck towing ..............................................GI-47
Towing point.....................................................GI-49
TP/SW - Wiring diagram ..............................EC-434
TPS - Wiring diagram...................................EC-180
Transfer control unit inspection table..............TF-55
Transfer dropping resistor .............................TF-112
Transfer fluid replacement (Part time
4WD model) ...............................................MA-22
Transfer fluid temperature sensor .................TF-111
Transfer motor ...............................................TF-117
Transfer motor relay ......................................TF-113
Transfer serial number ....................................GI-43
TRANSMT - Wiring diagram .........................EL-325
Tread-FR&RR (Dimensions)............................GI-43
Trim .................................................................BT-28
Trouble diagnoses ...........................................GI-34
Trunk lid opener, electric...............................EL-178Turbine revolution sensor..............................AT-202
TURN - Wiring diagram ..................................EL-77
Turn signal lamp .............................................EL-75
Two trip detection logic ..................................EC-59
Two-pole lift .....................................................GI-47
U
Under body .....................................................BT-60
V
Vacuum cut valve ...........................................EC-32
Vacuum cut valve bypass valve.....EC-32, 585, 591
Vacuum hose (brake system).........................BR-21
Vacuum hose drawing (Engine control) .........EC-26
Valve clearance ..............................................EM-52
Valve guide.....................................................EM-43
Valve seat.......................................................EM-45
Valve spring....................................................EM-46
Vehicle identification number...........................GI-42
Vehicle recovery (freeing a stuck
vehicle) .........................................................GI-49
Vehicle speed sensor (VSS) ........................EC-417
VENT/V - Wiring diagram ............EC-376, 555, 576
Ventilation air filter ........................................HA-159
VIAS .............................................................EC-610
VIAS - Wiring diagram .................................EC-610
Viscosity number (SAE) .................................MA-12
VSS - Wiring diagram ..................................EC-420
W
Wait detection switch ....................................TF-112
WARN - Wiring diagram................................EL-115
Warning chime ..............................................EL-125
Warning lamps ..............................................EL-114
Washer, front .................................................EL-136
Washer, rear..................................................EL-141
Water pump ....................................................LC-12
Water temperature gauge ...............................EL-94
Weatherstrip - See Exterior ............................BT-35
Wheel balance ...............................................MA-24
Wheel bearing (front)........................................AX-4
Wheel bearing (rear) ......................................AX-18
Wheel hub (front)..............................................AX-6
Wheel sensors (ABS)...............................BR-56, 80
Wheel size .......................................................GI-44
Wheelarch height .............................................SU-5
Wheelbase (Dimensions) ................................GI-43
Wide open & closed throttle position
switch ........................................................EC-174
Width (Dimensions) .........................................GI-43
WINDOW - Wiring diagram ..........................EL-245
Window, door ..................................................BT-18
Window, rear side ...........................................BT-55
Window, side - See Rear side window ...........BT-55
ALPHABETICAL INDEX
IDX-8

PROPELLER SHAFT &
DIFFERENTIAL CARRIER
SECTION
PD
CONTENTS
PROPELLER SHAFT......................................................3
Noise, Vibration and Harshness (NVH)
Troubleshooting ...........................................................3
NVH TROUBLESHOOTING CHART............................3
Components.................................................................4
FRONT PROPELLER SHAFT.....................................4
REAR PROPELLER SHAFT.......................................5
On-vehicle Service.......................................................6
PROPELLER SHAFT VIBRATION...............................6
APPEARANCE CHECKING........................................6
Removal and Installation .............................................6
Inspection.....................................................................7
Disassembly.................................................................7
CENTER BEARING - 2WD -.......................................7
JOURNAL (71H AND 80B)..........................................8
Assembly .....................................................................9
CENTER BEARING - 2WD -.......................................9
JOURNAL (71H AND 80B)..........................................9
Service Data and Specifications (SDS)..................... 11
GENERAL SPECIFICATIONS................................... 11
SERVICE DATA....................................................... 11
SNAP RING (80B).................................................... 11
SNAP RING (71H)...................................................12
R200A
FRONT FINAL DRIVE...................................................13
Preparation ................................................................13
SPECIAL SERVICE TOOLS......................................13
Noise, Vibration and Harshness (NVH)
Troubleshooting .........................................................15
On-vehicle Service.....................................................15
FRONT OIL SEAL REPLACEMENT...........................15
REAR COVER GASKET REPLACEMENT..................16
Components...............................................................17
Removal and Installation ...........................................18
REMOVAL...............................................................18
INSTALLATION........................................................18
Disassembly...............................................................18
PRE-INSPECTION...................................................18
FINAL DRIVE HOUSING..........................................19
DIFFERENTIAL CASE..............................................21
DIFFERENTIAL SIDE SHAFT...................................22
Inspection...................................................................23
RING GEAR AND DRIVE PINION.............................23
DIFFERENTIAL CASE ASSEMBLY...........................23
BEARING................................................................23
Adjustment .................................................................24
SIDE BEARING PRELOAD.......................................24
PINION GEAR HEIGHT AND PINION BEARING
PRELOAD
...............................................................25
TOOTH CONTACT...................................................29
Assembly ...................................................................30
DIFFERENTIAL SIDE SHAFT...................................30
DIFFERENTIAL CASE..............................................31
FINAL DRIVE HOUSING..........................................32
Service Data and Specifications (SDS).....................36
R200A.....................................................................36
H233B
REAR FINAL DRIVE.....................................................38
Preparation ................................................................38
SPECIAL SERVICE TOOLS......................................38
Noise, Vibration and Harshness (NVH)
Troubleshooting .........................................................40
On-vehicle Service.....................................................40
FRONT OIL SEAL REPLACEMENT...........................40
Components...............................................................42
Removal and Installation ...........................................43
REMOVAL...............................................................43
INSTALLATION........................................................43
Disassembly...............................................................43
PRE-INSPECTION...................................................43
DIFFERENTIAL CARRIER........................................44
DIFFERENTIAL CASE..............................................46
Inspection...................................................................47
RING GEAR AND DRIVE PINION.............................47
DIFFERENTIAL CASE ASSEMBLY...........................47
BEARING................................................................47
Limited Slip Differential ..............................................47
PREPARATION FOR DISASSEMBLY........................47
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DISASSEMBLY........................................................48
INSPECTION...........................................................49
ADJUSTMENT.........................................................50
ASSEMBLY.............................................................51
Adjustment .................................................................53
PINION GEAR HEIGHT............................................53
TOOTH CONTACT...................................................56Assembly ...................................................................57
DIFFERENTIAL CASE..............................................57
DIFFERENTIAL CARRIER........................................58
Service Data and Specifications (SDS).....................62
H233B.....................................................................62
CONTENTS(Cont'd)
PD-2

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

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