INFINITI QX4 2001 Factory Service Manual

SPD220A
13. Remove the J34309 pinion preload shim selector tool from the
final drive housing and disassemble to retrieve the pinion bear-
ings.
TOOTH CONTACTNBPD0040S02Gear 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.
SPD005
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.
SPD695
3. Hold companion flange steady by hand and rotate the ring gear
in both directions.
REAR FINAL DRIVEH233B
Adjustment (Cont'd)
PD-56

SPD007-B
SPD552
AssemblyNBPD0041DIFFERENTIAL CASENBPD0041S011. 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-62.
Backlash between side gear and pinion mate gear
(Clearance between side gear thrust washer and differ-
ential case):
0.10 - 0.20 mm (0.0039 - 0.0079 in)
SPD030
4. Install pinion mate shaft lock pin with a punch.
Make sure lock pin is flush with case.
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REAR FINAL DRIVEH233B
Adjustment (Cont'd)
PD-57

SPD322
5. Apply gear oil to gear tooth surfaces and thrust surfaces and
check to see they turn properly.
6. Install differential case assembly on ring gear.
Tighten bolts in a criss-cross pattern, lightly tapping bolt head
with a hammer.
PD244
7. Press-fit side bearing inner cones on differential case with Tool.
Tool number:
A ST33190000 (J25523)
B ST33081000 ( Ð )
SPD580
DIFFERENTIAL CARRIERNBPD0041S021. 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. Refer to
ªAdjustmentº, PD-53.
3. Install drive pinion adjusting washer in drive pinion, and press-
fit pinion rear bearing inner cone in it, with press and Tool.
Tool number:
ST30901000 (J26010-01)
REAR FINAL DRIVEH233B
Assembly (Cont'd)
PD-58

SPD581
4. Place pinion front bearing inner cone in gear carrier.
SPD291A
5. Apply multi-purpose grease to cavity at sealing lips of oil seal.
Install front oil seal.
Tool number:
A ST30720000 (J25405)
B KV38102510 ( Ð )
SPD935-A
6. Install drive pinion bearing spacer, pinion bearing adjusting
shim and drive pinion in gear carrier.
SPD697
7. Insert companion flange into drive pinion by tapping the com-
panion flange with a soft hammer.
SPD481A
8. Tighten pinion nut to the specified torque.
The threaded portion of drive pinion and pinion nut should be
free from oil or grease.
Tool number: KV38108300 (J44195)
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REAR FINAL DRIVEH233B
Assembly (Cont'd)
PD-59

SPD149
SPD684
9. Turn drive pinion in both directions several times, and measure
pinion bearing preload.
Tool number: ST3127S000 (J25765-A)
Pinion bearing preload (Without front oil seal):
1.2 - 2.0 N´m (12 - 20 kg-cm, 10 - 17 in-lb)
If preload is out of specification, adjust the thickness of spacer and
shim combination by replacing shim and spacer with thinner one.
IStart from the combination of thickest spacer and shim.
ICombine each spacer and shim thickness one by one until the
correct specification are achieved.
Drive pinion bearing preload adjusting spacer and
shim:
Refer to SDS, PD-64.
10. Install differential case assembly with side bearing outer races
into gear carrier.
11. Position side bearing adjusters on gear carrier with threads
properly engaged; screw in adjusters lightly at this stage of
assembly.
Tool number: ST32580000 (J34312)
SPD265
12. Align mark on bearing cap with that on gear carrier and install
bearing cap on gear carrier.
IDo not tighten at this point to allow further tightening of side
bearing adjusters.
SPD246
13. Tighten both right and left side bearing adjusters alternately
and measure ring gear backlash and total preload at the same
time. Adjust right and left side bearing adjusters by tightening
them alternately so that proper ring gear backlash and total
preload can be obtained.
Ring gear-to-drive pinion backlash:
0.13 - 0.18 mm (0.0051 - 0.0071 in)
SPD149
IWhen checking preload, turn drive pinion in both direc-
tions several times to set bearing rollers.
Tool number: ST3127S000 (J25765-A)
Total preload:
P
1+ [0.3 - 0.4 N´m (3 - 4 kg-cm, 2.6 - 3.5 in-lb)]
P
1: Drive pinion preload
REAR FINAL DRIVEH233B
Assembly (Cont'd)
PD-60

SPD698
14. Tighten side bearing cap bolts.
15. Install side lock finger in place to prevent rotation during opera-
tion.
SPD247
16. Check runout of ring gear with a dial indicator.
Runout limit: 0.08 mm (0.0031 in)
IIf backlash varies excessively in different places, the variance
may have resulted from foreign matter caught between the ring
gear and the differential case.
IIf the backlash varies greatly when the runout of the ring gear
is within a specified range, the hypoid gear set or differential
case should be replaced.
17. Check tooth contact. Refer to ªTOOTH CONTACTº, PD-56.
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REAR FINAL DRIVEH233B
Assembly (Cont'd)
PD-61

Service Data and Specifications (SDS)
H233B=NBPD0042General SpecificationsNBPD0042S01
Rear final drive2WD 4WD
Standard Optional
H233B
2-pinion LSD
Gear ratio4.363
Number of teeth (Ring gear/drive pinion) 48/11
Oil capacity (Approx.)(US pt, lmp pt) 2.8 (5-7/8, 4-7/8)
Ring Gear RunoutNBPD0042S02
Ring gear runout limit mm (in)0.08 (0.0031)
Side Gear AdjustmentNBPD0042S03
Side gear backlash (Clearance between side gear and differential case) mm (in) 0.10 - 0.20 (0.0039 - 0.0079)
Available side
gear thrust
washersThickness mm (in) Part number*
1.75 (0.0689)
1.80 (0.0709)
1.85 (0.0728)38424-T5000
38424-T5001
38424-T5002
*: Always check with the Parts Department for the latest parts information.
Differential Torque Adjustment (LSD models)NBPD0042S04
Differential torque N´m (kg-m, ft-lb) 88 - 108 (9 - 11, 65 - 80)
Number of discs and plates (One
side)Friction disc 2
Friction plate 9
Spring plate 2
Wear limit of plate and disc mm (in) 0.1 (0.004)
Allowable warpage of friction disc and plate mm (in) 0.08 (0.0031)
Available discs
and platesPlate name Thickness mm (in) Part number*
Friction disc1.48 - 1.52 (0.0583 - 0.0598)
1.38 - 1.42 (0.0543 - 0.0559)
1.58 - 1.62 (0.0622 - 0.0638)38433-C6002 (Standard type)
38433-C6004 (Adjusting type)
38433-C6003 (Adjusting type)
Friction plate1.48 - 1.52 (0.0583 - 0.0598)
1.38 - 1.42 (0.0543 - 0.0559)
1.58 - 1.62 (0.0622 - 0.0638)38432-C6001
38432-C6002
38432-C6003
Spring plate 1.48 - 1.52 (0.0583 - 0.0598) 38435-S9200
*: Always check with the Parts Department for the latest parts information.
Total Preload AdjustmentNBPD0042S05
Total preload N´m (kg-cm, in-lb) P1+ [0.3 - 0.4 (3 - 4, 2.6 - 3.5)]
Ring gear backlash mm (in) 0.13 - 0.18 (0.0051 - 0.0071)
Side bearing adjusting methodSide adjuster
P1: Drive pinion preload
REAR FINAL DRIVEH233B
Service Data and Specifications (SDS)
PD-62

Drive Pinion Height Adjustment=NBPD0042S06
Available pin-
ion height
adjust washersThickness mm (in) Part number*
2.58 (0.1016)
2.61 (0.1028)
2.64 (0.1039)
2.67 (0.1051)
2.70 (0.1063)
2.73 (0.1075)
2.76 (0.1087)
2.79 (0.1098)
2.82 (0.1110)
2.85 (0.1122)
2.88 (0.1134)
2.91 (0.1146)
2.94 (0.1157)
2.97 (0.1169)
3.00 (0.1181)
3.03 (0.1193)
3.06 (0.1205)
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)38151-01J00
38151-01J01
38151-01J02
38151-01J03
38151-01J04
38151-01J05
38151-01J06
38151-01J07
38151-01J08
38151-01J09
38151-01J10
38151-01J11
38151-01J12
38151-01J13
38151-01J14
38151-01J15
38151-01J16
38151-01J17
38151-01J18
38151-01J19
38151-01J60
38151-01J61
38151-01J62
38151-01J63
38151-01J64
38151-01J65
38151-01J66
38151-01J67
38151-01J68
38151-01J69
38151-01J70
38151-01J71
38151-01J72
38151-01J73
38151-01J74
38151-01J75
38151-01J76
*: Always check with the Parts Department for the latest parts information.
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REAR FINAL DRIVEH233B
Service Data and Specifications (SDS) (Cont'd)
PD-63

Drive Pinion Preload Adjustment=NBPD0042S07
Drive pinion bearing preload adjusting method Adjusting shim and spacer
Drive pinion preload without front oil seal N´m (kg-cm, in-lb) [P
1] 1.2 - 2.0 (12 - 20, 10 - 17)
Available front
drive pinion
bearing adjust-
ing shimsThickness mm (in) Part number*
2.31 (0.0909)
2.33 (0.0917)
2.35 (0.0925)
2.37 (0.0933)
2.39 (0.0941)
2.41 (0.0949)
2.43 (0.0957)
2.45 (0.0965)
2.47 (0.0972)
2.49 (0.0980)
2.51 (0.0988)
2.53 (0.0996)
2.55 (0.1004)
2.57 (0.1012)
2.59 (0.1020)38125-82100
38126-82100
38127-82100
38128-82100
38129-82100
38130-82100
38131-82100
38132-82100
38133-82100
38134-82100
38135-82100
38136-82100
38137-82100
38138-82100
38139-82100
Available drive
pinion bearing
adjusting spac-
ersThickness mm (in) Part number*
4.50 (0.1772)
4.75 (0.1870)
5.00 (0.1969)
5.25 (0.2067)
5.50 (0.2165)38165-76000
38166-76000
38167-76000
38166-01J00
38166-01J10
*: Always check with the Parts Department for the latest parts information.
REAR FINAL DRIVEH233B
Service Data and Specifications (SDS) (Cont'd)
PD-64

RESTRAINT SYSTEM
SECTION
RS
CONTENTS
SEAT BELTS...................................................................3
Precautions ..................................................................3
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
²AIR BAG²AND²SEAT BELT PRE-TENSIONER²
........3
PRECAUTION FOR SEAT BELT SERVICE..................3
Front Seat Belt.............................................................4
REMOVAL AND INSTALLATION.................................4
Rear Seat Belt .............................................................5
REMOVAL AND INSTALLATION.................................5
Seat Belt Inspection.....................................................7
AFTER A COLLISION.................................................7
PRELIMINARY CHECKS............................................7
SEAT BELT RETRACTOR ON-VEHICLE CHECK.........8
SEAT BELT RETRACTOR OFF-VEHICLE CHECK.......8
SUPPLEMENTAL RESTRAINT SYSTEM (SRS).........10
Precautions ................................................................10
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
²AIR BAG²AND²SEAT BELT PRE-TENSIONER²
......10
PRECAUTIONS FOR SRS²AIR BAG²AND²SEAT
BELT PRE-TENSIONER²SERVICE
...........................10
WIRING DIAGRAMS AND TROUBLE DIAGNOSIS.....10
Preparation ................................................................ 11
SPECIAL SERVICE TOOLS...................................... 11
Description .................................................................12
Seat Belt Pre-tensioner with Load Limiter.................12
Built-in Type Side Air Bag..........................................13
SRS Component Parts Location ...............................13
Maintenance Items ....................................................14
Diagnosis Sensor Unit ...............................................15
REMOVAL AND INSTALLATION...............................15
Seat Belt Pre-tensioner .............................................15
REMOVAL AND INSTALLATION...............................15
Satellite Sensor..........................................................16
REMOVAL AND INSTALLATION...............................16
Driver Air Bag Module and Spiral Cable ...................17
REMOVAL AND INSTALLATION...............................17
REMOVAL...............................................................17
INSTALLATION........................................................18
Front Passenger Air Bag Module ..............................19
REMOVAL...............................................................19
INSTALLATION........................................................20
Side Air Bag Module ..................................................21
REMOVAL...............................................................21
INSTALLATION........................................................22
Disposal of Air Bag Module and Seat Belt Pre-
tensioner ....................................................................22
CHECKING DEPLOYMENT TOOL.............................23
DEPLOYMENT PROCEDURES FOR AIR BAG
MODULE (OUTSIDE OF VEHICLE)
...........................24
DEPLOYMENT PROCEDURES FOR SEAT BELT
PRE-TENSIONER (OUTSIDE OF VEHICLE)
..............27
DEPLOYMENT OF AIR BAG MODULE AND SEAT
BELT PRE-TENSIONER WHILE MOUNTED IN
VEHICLE
.................................................................27
DISPOSING OF AIR BAG MODULE AND SEAT
BELT PRE-TENSIONER
...........................................28
Trouble Diagnoses Introduction.................................29
DIAGNOSIS FUNCTION...........................................29
DIAGNOSIS MODE FOR CONSULT-II.......................29
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITH CONSULT-II
...................................................30
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITHOUT CONSULT-II
............................................30
HOW TO ERASE SELF-DIAGNOSIS RESULTS.........30
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................32
INFORMATION FROM CUSTOMER..........................32
PRELIMINARY CHECK............................................32
WORK FLOW..........................................................33
Schematic ..................................................................34
Wiring Diagram - SRS -.............................................35
SRS Operation Check ...............................................38
DIAGNOSTIC PROCEDURE 1..................................38
Trouble Diagnoses with CONSULT-II...................39
DIAGNOSTIC PROCEDURE 2..................................39
DIAGNOSTIC PROCEDURE 3..................................42
DIAGNOSTIC PROCEDURE 4 (CONTINUED
FROM DIAGNOSTIC PROCEDURE 2)
......................44
DIAGNOSTIC PROCEDURE 5..................................44
Trouble Diagnoses without CONSULT-II..............48
DIAGNOSTIC PROCEDURE 6..................................48
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