Ins INFINITI QX56 2004 Factory Service Manual

POWER STEERING OIL PUMP
PS-27
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PS
Revision: August 20072004 QX56
Disassembly and AssemblyEGS000MY
INSPECTION BEFORE DISASSEMBLY
Disassemble power steering oil pump only if the following conditions are found.

Oil leakage from oil pump

Deformed or damaged pulley

Poor performance
DISASSEMBLY
CAUTION:
When retaining drive shaft in a vise, always use copper or aluminum plates between vise and shaft.
NOTE:
Mount the oil pump in a vise as needed.
1. Unscrew three bracket bolts and remove bracket from rear cover.
2. Unscrew four rear cover bolts and remove rear cover from body assembly.
3. Remove gasket from body assembly.
4. Remove lock pin, cartridge and side plate from body assembly.
5. Remove pulley from drive shaft assembly.
1. Bracket 2. Rear cover 3. Gasket
4. Lock pin 5. Cam ring 6. Rotor
7. Vane 8. Cartridge 9. Side plate
10. O-ring 11. Body assembly 12. Oil seal
13. Drive shaft assembly 14. Snap ring 15. Pulley
16. Spring washer 17. Flow control valve 18. Pressure sensor
19. Connector bolt 20. Copper washer 21. Bracket
22. Suction pipe 23. O-ring
WGIA0076E

PS-28
POWER STEERING OIL PUMP
Revision: August 20072004 QX56
6. Remove snap ring from drive shaft assembly, then press out
drive shaft assembly.
CAUTION:
When removing snap ring, be careful not to damage drive
shaft assembly.
7. Using a screwdriver, remove oil seal from body assembly.
8. Remove O-ring from body assembly.
9. Remove connector bolt, then flow control valve and spring from
body assembly.
CAUTION:
Be careful not to drop and deform the flow control valve.
10. Remove suction pipe from body assembly.
11. Remove O-ring for suction pipe.
INSPECTION AFTER DISASSEMBLY
Body Assembly and Rear Cover Inspection

Check body assembly and the inside of rear cover for damage. If any damage is found, replace with new
part for rear cover and replace with new power steering pump assembly for body assembly.
Cartridge Assembly Inspection

Check cam ring, side plate, rotor and vane for damage. If any damage is found, replace cartridge assem-
bly with new one.
ASSEMBLY
CAUTION:
When retaining drive shaft assembly in a vise, always use copper or aluminum plates between vise
and shaft.
NOTE:
Mount the oil pump in a vise as needed.
1. Apply a coat of Genuine NISSAN PSF or equivalent to oil seal lip and to the circumference of oil seal.
Refer to MA-10, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
SST 0 10 B
SST 0 34 A
SGIA0524E

POWER STEERING OIL PUMP
PS-29
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PS
Revision: August 20072004 QX56
2. Install oil seal to body assembly using suitable tool.
NOTE:
Do not reuse oil seal.
3. Apply a coat of Genuine NISSAN PSF or equivalent to drive shaft assembly and press drive shaft assem-
bly into body assembly with suitable tool, then install snap ring.
NOTE:
Do not reuse snap ring.
4. Apply a coat of Genuine NISSAN PSF or equivalent to O-ring and install O-ring into body assembly.
NOTE:
Do not reuse O-ring.
5. Install side plate to body assembly.
6. Install lock pin into lock pin hole, and install cam-ring as shown.

When installing cam ring, align letter "E" to rear cover as
shown.
CAUTION:
Do not confuse the assembling direction of cam ring. If
cam ring is installed facing the incorrect direction, it may
cause pump operation malfunction.
7. Install rotor to body assembly.
SST 0 38 A
SGIA0422E
WGIA0079E

PS-30
POWER STEERING OIL PUMP
Revision: August 20072004 QX56

When installing rotor, the punch mark on the face of the rotor
faces the body assembly.
8. Install vane to rotor with round portion facing outside.
9. Check if drive shaft assembly turns smoothly.
10. Install gasket to body assembly.
NOTE:
Do not reuse gasket.
11. Install rear cover to body assembly and tighten bolts to the specified torque.
12. Install bracket to rear cover and tighten bolts at the specified torque.
13. Install pulley to drive shaft assembly then tighten lock nut at the specified torque.
14. Install spring and flow control valve, copper washers, joint and connector bolt to body assembly. Then
tighten connector bolt to the specified torque.
NOTE:
Do not reuse O-ring.
15. Apply a coat of Genuine NISSAN PSF or equivalent to O-ring, then install O-ring to suction pipe.
NOTE:
Do not reuse O-ring.
16. Install suction pipe to body assembly.
SGIA0424E
SST 8 43 A

HYDRAULIC LINE
PS-31
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PS
Revision: August 20072004 QX56
HYDRAULIC LINEPFP:49721
Removal and InstallationEGS000MZ
Refer to the following illustration for hydralic line removal.
1. Reservoir tank 2. Suction hose 3. High pressure hose
4. Oil cooler 5. Steering gear assembly 6. Reservoir tank bracket
7. Eye bolt
WGIA0096E

PS-32
HYDRAULIC LINE
Revision: August 20072004 QX56
Installation is in the reverse order of removal.

Confirm mating marks are aligned with hose and clamp, then
correct if needed.

To install eye joint, align projection of eye joint with notch of
power steering pump, and attach eye joint to power steering
pump properly. Tighten eye bolt by hand fully, then torque to
specification.
SGIA0563E
WGIA0089E

SERVICE DATA AND SPECIFICATIONS (SDS)
PS-33
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PS
Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Steering WheelEGS000NE
Steering ColumnEGS000NG
Inspection After Assembly
Unit: mm (in)
Inspection After Removal
Unit: mm (in) End play of the axial direction for steering wheel 0 mm (0 in)
Steering wheel play on the outer circumference 0 − 35 mm (0 − 1.38 in)
Steering wheel turning force 39 N (4 kg-f, 9 lb-f) or less
Steering column length “L”610 (24.02)
WGIA0080E
Steering column length “L2”262 (10.31)
Steering column length “L1” 158 (6.22)
SGIA0475E

PS-34
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: August 20072004 QX56
Inspection After Installation
Steering Outer Socket and Inner SocketEGS000NH
Unit: mm (in) Range “A”61.3 mm (2.41 in)
Tilt mechanism range (Manual tilt) 3° per notch at 5 steps
WGIA0083E
Tie-rod ball joint outer socketSwinging torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Measurement on spring balance
Measuring point: cotter pin hole of stud4.84 − 46.7 N (0.50 − 4.7 kg, 4 − 34 lb)
Rotating torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Axial end play 0.5 mm (0.020 in) or less
Tie-rod ball joint inner socketSwinging torque 1.0 − 7.8 N·m (0.11 − 0.79 kg-m, 9 − 69 in-lb)
Measurement on spring balance

Measuring point: "L" mark see above,
"L"=83.2 mm (3.276 in).12.1 − 93.7 N (1.3 − 9.5 kg, 9 − 69 lb)
Axial end play 0.2 mm (0.08 in) or less
SGIA0358E
Inner socket length “L” 115.2 (4.54)
SGIA0167E

RAX-1
REAR AXLE
D DRIVELINE/AXLE
CONTENTS
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SECTION RAX
A
B
RAX
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 2
Caution ..................................................................... 2
PREPARATION ........................................................... 3
Special Service Tools (SST) ..................................... 3
Commercial Service Tools ........................................ 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 4
NVH Troubleshooting Chart ..................................... 4
WHEEL HUB .............................................................. 5
On-Vehicle Inspection and Service .......................... 5
WHEEL BEARING INSPECTION ......................... 5
Removal and Installation .......................................... 5
REMOVAL ............................................................. 5
INSTALLATION ..................................................... 6REAR DRIVE SHAFT ................................................. 7
Components ............................................................. 7
Removal and Installation .......................................... 7
REMOVAL ............................................................. 7
INSPECTION AFTER REMOVAL ......................... 8
INSTALLATION ..................................................... 8
Disassembly and Assembly ...................................... 8
DISASSEMBLY ..................................................... 9
INSPECTION AFTER DISASSEMBLY ................ 10
ASSEMBLY ......................................................... 10
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 14
Wheel Bearing ........................................................ 14
Drive Shaft .............................................................. 14

PREPARATION
RAX-3
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RAX
Revision: August 20072004 QX56
PREPARATIONPFP:00002
Special Service Tools (SST)EDS001AQ
The actual shapes of the Kent-Moore tools may differ from those of the special service tools illustrated here.
Commercial Service ToolsEDS001AR
Tool number
(Kent-Moore No.)
Tool nameDescription
KV38100500
(—)
DriftInstalling drive shaft plug
a: 80 mm (3.15 in) dia.
b: 60 mm (2.36 in) dia.
KV38102200
(—)
DriftInstalling drive shaft plug
a: 90 mm (3.54 in) dia.
b: 31 mm (1.22 in) dia.
ZZA0701D
ZZA0920D
Tool nameDescription
Power toolsRemoving bolts and nuts
PBIC0190E