Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti QX56 JA60 2004-2005 Approved 2005_QX56 ps

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G STEERING

POWER STEERING SYSTEM
SECTION PS B

E
CONTENTS
PRECAUTIONS ......................................................... 2
. INSPECTION AFTER INSTALLATION ............... 12 . F
Precautions for Supplemental Restraint System Disassembly and Assembly ................................... 13 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DISASSEMBLY .................................................. 13 .
SIONER" ................................................................. 2
. ASSEMBLY ........................................................ 14. PS
Precautions for Steering System ............................. 2 . INSPECTION AFTER ASSEMBLY ..................... 14 .
PREPARATION .......................................................... 3
. POWER STEERING GEAR AND LINKAGE ........... 15 .
Special Service Tools (SST) .................................... 3 . Removal and Installation ....................................... 15 .
H
Commercial Service Tools ....................................... 4 . REMOVAL .......................................................... 15
.
NOISE, VIBRATION, AND HARSHNESS (NVH) INSTALLATION .................................................. 16 .
TROUBLESHOOTING ............................................... 5 . INSPECTION AFTER INSTALLATION ............... 17 .
NVH Troubleshooting Chart .................................... 5 . Disassembly and Assembly ................................... 17 . I
POWER STEERING FLUID ....................................... 6 . DISASSEMBLY .................................................. 17 .
Checking Fluid Level ............................................... 6
. INSPECTION AFTER DISASSEMBLY ............... 20 .
Checking Fluid Leakage .......................................... 6 . ASSEMBLY ........................................................ 21. J
Air Bleeding Hydraulic System ................................ 6 . POWER STEERING OIL PUMP .............................. 26 .
STEERING WHEEL ................................................... 7 . On-Vehicle Inspection and Service ........................ 26 .
On-Vehicle Inspection and Service ......................... 7 . CHECKING RELIEF OIL PRESSURE ............... 26 .
K
CHECKING CONDITION OF INSTALLATION ..... 7 Removal and Installation ....................................... 26 .
CHECKING STEERING WHEEL PLAY ............... 7 . REMOVAL .......................................................... 26
.
CHECKING NEUTRAL POSITION ON STEER- INSTALLATION .................................................. 26 .
ING WHEEL ......................................................... 7
. Disassembly and Assembly ................................... 27 . L
CHECKING STEERING WHEEL TURNING INSPECTION BEFORE DISASSEMBLY ............ 27 .
FORCE ................................................................. 7
. DISASSEMBLY .................................................. 27 .
CHECKING FRONT WHEEL TURNING ANGLE 8 ..... INSPECTION AFTER DISASSEMBLY ............... 28 . M
Removal and Installation ......................................... 8. ASSEMBLY ........................................................ 28.
REMOVAL ............................................................ 8
. HYDRAULIC LINE ................................................... 31 .
INSTALLATION .................................................... 8
. Removal and Installation ....................................... 31 .
TILT SYSTEM ............................................................ 9
. SERVICE DATA AND SPECIFICATIONS (SDS) ..... 33 .
Removal and Installation ......................................... 9. Steering Wheel ...................................................... 33
.
TILT MOTOR AND TILT SENSOR ....................... 9 . Steering Column .................................................... 33
.
STEERING COLUMN .............................................. 10 . Steering Outer Socket and Inner Socket ............... 34 .
Removal and Installation ....................................... 10 . Steering Gear ........................................................ 35
.
REMOVAL .......................................................... 10
. Oil Pump ................................................................ 35
.
INSPECTION AFTER REMOVAL .......................11 . Steering Fluid ......................................................... 35
.
INSTALLATION ...................................................11.

Revision: October 2005 PS-1 2005 QX56
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EGS000U4

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
G To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
G Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
G Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Steering System EGS000U5

G Before disassembly, thoroughly clean the outside of the unit.
G Disassembly should be done in a clean work area. It is important to prevent the internal parts from becom-
ing contaminated by dirt or other foreign matter.
G For easier and proper assembly, place disassembled parts in order on a parts rack.
G Use nylon cloth or paper towels to clean the parts; common shop rags can leave lint that might interfere
with their operation.
G Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable solvent.
G Before assembly, apply a coat of recommended Genuine NISSAN PSF or equivalent to hydraulic parts.
Petroleum jelly may be applied to O-rings and seals. Do not use any grease.
G Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during installation.
Perform functional tests whenever designated.

Revision: October 2005 PS-2 2005 QX56
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools (SST) EGS000U6

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number Description B
(Kent-Moore No.)
Tool name
ST3127 S000 Inspecting of pinion rotating torque and rota- C
(See J-25765-A) tional torque for ball joint
Preload gauge
1. GG9103000
(J25765-A) D
Torque wrench
2. HT62940000
( -- )
Socket adapter E
3. HT62900000 S-NT541

( -- )
Socket adapter
F
HT72520000 Removing steering outer socket
(J-25730-A)
Ball joint remover
a: 33 mm (1.30 in) PS
b: 50 mm (1.97 in)
r: 11.5 mm (0.453 in)

NT546
H

-- Removing rear cover
(J-46213)
Rear cover wrench I
a: 21.6 mm (0.850 in)
b: 34.9 mm (1.374 in)

J
SGIA0516E

KV48104400 Installing of rack Teflon ring
( -- ) K
Teflon ring correcting tool
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in) L

S-NT550

KV48103400 Inspecting rotational torque M
( -- )
Torque adapter

ZZA0824D

Revision: October 2005 PS-3 2005 QX56
PREPARATION

Tool number Description
(Kent-Moore No.)
Tool name
1. KV48105300-4 and 5295262U10 Measuring oil pump relief pressure
( -- )
Connector A and O-ring
2. KV48105300-3 and 5295262U00
( -- )
Eye-bolt and O-ring
3. KV48103500
(J26357 and J26357-10)
Pressure gauge and shut-off valve
4. KV48105300-1 and 5295262U00
( -- )
Connector B and O-ring SGIA0427E

5. KV48105300-2
( -- )
Nut
-- Measuring steering wheel turning force
(J-44372)
Spring gauge

LST024

KV481J0010 Removing steering wheel
(J-1859A)
Steering wheel puller

LHIA0043E

KV481J0020 Removing steering wheel
(J-42578)
Steering wheel puller legs

LHIA0044E

Commercial Service Tools EGS000U7

Tool name Description
Power tool Removing nuts and bolts

PBIC0190E

Revision: October 2005 PS-4 2005 QX56
Symptom

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