Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2003_Q45 ps

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POWER STEERING SYSTEM

G STEERING

B
SECTION
POWER STEERING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 2
. DISASSEMBLY .................................................. 13 . F
Precautions for Supplemental Restraint System ASSEMBLY ........................................................ 14.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Inspection .............................................................. 14
.
SIONER" ................................................................. 2
. POWER STEERING GEAR AND LINKAGE ........... 15 . PS
Precautions for Steering System ............................. 2 . Removal and Installation ....................................... 15 .
PREPARATION .......................................................... 3
. REMOVAL .......................................................... 15
.
Special Service Tools .............................................. 3
. INSTALLATION .................................................. 15 .
H
NOISE, VIBRATION AND HARSHNESS (NVH) Component ............................................................ 17
.
TROUBLESHOOTING ............................................... 5 . Disassembly and Assembly ................................... 18 .
NVH Troubleshooting Chart .................................... 5 . DISASSEMBLY .................................................. 18 .
POWER STEERING FLUID ....................................... 6 . PINION ROTATING TORQUE ADJUSTMENT ... 19 I
Checking Fluid Level ............................................... 6
. INSPECTION AFTER DISASSEMBLY ............... 19 .
Checking Fluid Leakage .......................................... 6 . ASSEMBLY ........................................................ 20.
Bleeding Hydraulic System ..................................... 6 . POWER STEERING OIL PUMP .............................. 23 . J
STEERING WHEEL ................................................... 7 . On-Vehicle Service ................................................ 23.
On-Vehicle Service .................................................. 7
. CHECKING HYDRAULIC SYSTEM ................... 23 .
CHECKING STEERING WHEEL PLAY ............... 7 . CHECKING AND ADJUSTING DRIVE BELTS
K
CHECKING NEUTRAL POSITION ON STEER- (FOR POWER STEERING) ............................... 23 .
ING WHEEL ......................................................... 7
. Removal and Installation ....................................... 23 .
CHECKING STEERING WHEEL TURNING REMOVAL .......................................................... 23
.
FORCE ................................................................. 7
. INSTALLATION .................................................. 23 . L
FRONT WHEEL TURNING ANGLE .................... 8 . Disassembly and Assembly ................................... 24 .
Removal and Installation ......................................... 9. PRE-DISASSEMBLY INSPECTION ................... 24 .
REMOVAL ............................................................ 9
. DISASSEMBLY .................................................. 24 . M
INSTALLATION .................................................... 9
. INSPECTION AFTER DISASSEMBLY ............... 25 .
STEERING COLUMN ...............................................11 . ASSEMBLY ........................................................ 26.
Removal and Installation ........................................11 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 28 .
REMOVAL OF LOWER SHAFT AND HALL Steering Wheel ...................................................... 28
.
COVER ...............................................................11
. Steering Angle ....................................................... 28
.
INSTALLATION OF LOWER JOINT AND HALL Steering Column .................................................... 28
.
COVER .............................................................. 12
. Steering Linkage .................................................... 28
.
REMOVAL OF STEERING COLUMN ................ 12 . Steering Gear ........................................................ 29
.
INSTALLATION OF STEERING COLUMN ........ 12 . Oil Pump ................................................................ 29
.
Disassembly and Assembly .................................. 13 . Steering Fluid ......................................................... 29
.

Revision; 2004 April PS-1 2003 Q45
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EGS000FJ

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:
q 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.
q 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.
q 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 EGS00087

q Before disassembly, thoroughly clean the outside of unit.
q 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.
q Place disassembled parts in order, on a parts rack, for easier and proper assembly.
q Use nylon cloths or paper towels to clean parts; common shop rags can leave lint that might interfere with
their operation.
q Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable solvent.
q Before assembly, apply a coat of recommended Genuine Nissan PSF II or equivalent to hydraulic parts.
Vaseline may be applied to O-rings and seals. Do not use any grease.
q Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during installation.
Perform functional tests whenever designated.

Revision; 2004 April PS-2 2003 Q45
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools EGS0006V

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
B
(Kent - Moore No.) Description
Tool name
C

ST27180001
(J25726 -A) Removal of steering wheel D
Steering wheel puller

S-NT544
E

ST29020001 F
(J24319-01) Removing tie rod outer socket
Linkage puller

PS
ZZC0002D

ST3127S000
(See J25765 - A) H
Preload gauge
1.GG9103000.
(J25765 - A)
Torque wrench Inspection of sliding torque, steering I
2.HT62940000 torque, and rotational torque for ball joint
(

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