2001 INFINITI QX4 Transfer

SMA848B
Checking Drum BrakeNBMA0033WHEEL CYLINDERNBMA0033S01Check for leakage.
DRUMNBMA0033S02Check condition and inner surface.
Standard inner diameter:
295 mm (11.61 in)
Drum repair limit (Inner diameter):
296.5 mm (11.67 in)
SMA849B
LININGNBMA0033S03Check wear or damage.
Standard thickness:
6.1 mm (0.24 in)
Lining wear limit (Minimum thickness):
1.5 mm (0.059 in)
SMA870C
TEMPORARY METHOD FOR CHECKING LINING WEARNBMA0033S04Remove inspection hole plug and check for lining wear.
SMA874C
Checking Steering Gear, Linkage and Transfer
Gear
NBMA0034STEERING GEARNBMA0034S01ICheck gear housing and boots for looseness, damage and
grease leakage.
ICheck connection with steering column for looseness.
STEERING LINKAGENBMA0034S02ICheck ball joint, dust cover and other component parts for
looseness, wear, damage and grease leakage.
STEERING TRANSFER GEARNBMA0034S03ICheck gear box for looseness, damage and grease leakage.
CHASSIS AND BODY MAINTENANCE
Checking Drum Brake
MA-26

Removal and InstallationNBPD0017REMOVALNBPD0017S01IRemove front of propeller shaft.
Plug front end of transfer.
IRemove drive shaft. Refer to AX-11, ªRemovalº.
IRemove front final drive mounting bolts.
CAUTION:
Be careful not to damage spline, sleeve yoke and front oil seal
when removing propeller shaft.
SPD123
INSTALLATIONNBPD0017S02IFill final drive with recommended gear oil.
SPD664
DisassemblyNBPD0018PRE-INSPECTIONNBPD0018S01Before disassembling final drive, perform the following inspection.
ITotal preload
a) Turn drive pinion in both directions several times to set bear-
ing rollers.
b) Check total preload with Tool.
Tool number: ST3127S000 (J25765-A)
Total preload:
P
1+ [0.3 - 1.5 N´m (3 - 15 kg-cm, 2.6 - 13.0 in-lb)]
P
1: Drive pinion preload
SPD513
IRing gear to drive pinion backlash
Check backlash of ring gear with a dial indicator at several
points.
Ring gear-to-drive pinion backlash:
0.10 - 0.15 mm (0.0039 - 0.0059 in)
FRONT FINAL DRIVER200A
Removal and Installation
PD-18

Removal and InstallationNBPD0032REMOVALNBPD0032S01IRemove rear of propeller shaft.
Plug front end of transfer.
IRemove axle shaft.
Refer to AX-19, ªRemovalº.
IRemove rear final drive mounting bolts.
CAUTION:
Be careful not to damage spline, sleeve yoke and front oil seal
when removing propeller shaft.
SPD123
INSTALLATIONNBPD0032S02IFill final drive with recommended gear oil.
SPD767
IPay attention to the direction of gasket.
SPD149
DisassemblyNBPD0033PRE-INSPECTIONNBPD0033S01Before disassembling final drive, perform the following inspection.
ITotal preload
a) Turn drive pinion in both directions several times to seat bear-
ing rollers correctly.
b) Check total preload with Tool.
Tool number: ST3127S000 (J25765-A)
Total preload:
1.2 - 2.0 N´m (12 - 20 kg-cm, 10 - 17 in-lb)
SPD246
IRing gear to drive pinion backlash
Check backlash of ring gear with a dial indicator at several
points.
Ring gear-to-drive pinion backlash:
0.13 - 0.18 mm (0.0051 - 0.0071 in)
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REAR FINAL DRIVEH233B
Removal and Installation
PD-43

STEERING SYSTEM
SECTION
ST
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............2
Precautions for Steering System .................................2
PREPARATION...............................................................3
Special Service Tools ..................................................3
Commercial Service Tools ...........................................5
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................6
NVH Troubleshooting Chart.........................................6
ON-VEHICLE SERVICE..................................................7
Checking Steering Wheel Play ....................................7
Checking Neutral Position on Steering Wheel ............7
PRE-CHECKING........................................................7
CHECKING...............................................................7
Front Wheel Turning Angle ..........................................7
Checking Gear Housing Movement ............................8
Adjusting Rack Retainer ..............................................8
Checking and Adjusting Drive Belts ............................8
Checking Fluid Level ...................................................8
Checking Fluid Leakage ..............................................8
Bleeding Hydraulic System..........................................9
Checking Steering Wheel Turning Force ....................9
Checking Hydraulic System.......................................10
STEERING WHEEL AND STEERING COLUMN......... 11
Components............................................................... 11
Removal and Installation ........................................... 11
STEERING WHEEL................................................. 11
STEERING COLUMN...............................................12
Disassembly and Assembly .......................................13
Inspection...................................................................14
TILT MECHANISM...................................................14
STEERING TRANSFER GEAR.....................................15
Removal .....................................................................15
Installation ..................................................................16
Inspection...................................................................16
POWER STEERING GEAR AND LINKAGE................17
Components...............................................................17
Removal and Installation ...........................................18
Disassembly...............................................................19
Inspection...................................................................20
BOOT.....................................................................20
RACK.....................................................................20
PINION ASSEMBLY.................................................20
GEAR HOUSING CYLINDER....................................20
TIE-ROD OUTER AND INNER SOCKETS..................21
Assembly ...................................................................21
Adjustment .................................................................24
POWER STEERING OIL PUMP....................................27
Components...............................................................27
Pre-disassembly Inspection .......................................27
Disassembly...............................................................28
Inspection...................................................................29
Assembly ...................................................................29
SERVICE DATA AND SPECIFICATIONS (SDS).........32
General Specifications ...............................................32
Steering Wheel ..........................................................32
Steering Column ........................................................32
Steering Transfer Gear ..............................................32
Steering Gear and Linkage .......................................33
Power Steering ..........................................................33
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Tool number
(Kent-Moore No.)
Tool nameDescription
ST3127S000
(See J25765-A)
1 GG91030000
(J25765-A)
Torque wrench
2 HT62940000
(Ð)
Socket adapter
3 HT62900000
(Ð)
Socket adapter
NT541
Measuring turning torque
KV48104400
(Ð)
Rack seal ring reformer
NT550
Reforming teflon ring
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in)
KV48103400
(Ð)
Torque adapter
NT236
Measuring steering transfer gear rotating
torque
KV48104200
(Ð)
Rear cover wrench
NT540
Removing and installing gear housing end
cover
a: 4 mm (0.16 in) dia.
b: 5 mm (0.20 in)
c: 3 mm (0.12 in) dia.
d: 5 mm (0.20 in)
(J43995)
Steering lock nut wrench
NT838
Adjusting steering pinion rotating torque
(J43996)
Steering rack adjustment
wrench
NT839
Adjusting steering pinion rotating torque
(J-44372)
Spring gauge
LST024
Measuring steering wheel turning force
PREPARATION
Special Service Tools (Cont'd)
ST-4

RemovalNBST0021
SST846C
1. Power steering gear assembly
2. Steering column lower joint3. Transfer gear assembly 4. Steering column upper joint
SST609C
1. Set wheels in the straight-ahead position.
2. Straight-forward position is indicated by a protrusion on the
power steering gear rear cover cap and matching mark on the
rear housing.
SST610C
3. Remove steering column upper and lower joint from transfer
gear.
4. Remove transfer gear assembly.
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STEERING TRANSFER GEAR
Removal
ST-15

SST847C
InstallationNBST00221. Set wheels in the straight-ahead position.
2. Install transfer gear assembly.
3. Install column lower joint while aligning groove with protrusions
on the steering gear rear cover cap.
4. Tighten bolt while aligning groove on steering gear. Before
tightening bolt, ensure it is inserted correctly.
SST848C
5. When attaching steering column upper and lower joint to trans-
fer gear, it must be positioned as shown in figure at left.
SST707CA
InspectionNBST0024Do not disassemble steering transfer gear assembly.
ICheck that steering transfer gear assembly operates smoothly.
Also check for grease leakage, deformation and damage.
Replace steering transfer gear assembly if necessary.
ICheck rotating torque at input shaft in 360É and in both direc-
tions.
Rotating torque:
0.25 - 0.69 N´m (2.5 - 7.0 kg-cm, 2.2 - 6.1 in-lb)
If rotating torque is out of specification, replace steering trans-
fer gear assembly.
STEERING TRANSFER GEAR
Installation
ST-16

General SpecificationsNBST0037
Applied modelAll
Steering modelPower steering
Steering gear typePR32K
Steering overall gear ratio 17.2
Turns of steering wheel
(Lock to lock)3.09
Steering column type Collapsible, tilt
Steering WheelNBST0038Unit: mm (in)
Steering wheel axial play0 (0)
Steering wheel play35 (1.38) or less
Movement of gear housing±2(±0.08) or less
Steering ColumnNBST0039Unit: mm (in)
Steering column length ªL1º 716.7 - 718.7 (28.22 - 28.30)
Steering column lower shaft length ªL
2º 178 - 180 (7.01 - 7.09)
Steering column upper joint length ªL
3º 430.7 - 432.7 (16.96 - 17.04)
SST739C
Steering Transfer GearNBST0041
Rotating torque0.25 - 0.69 N´m (2.5 - 7.0 kg-cm, 2.2 - 6.1 in-lb)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
ST-32