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G STEERING

B
SECTION
POWER STEERING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 2. CHECKING STEERING GEAR .......................... 12 . F
Precautions for Supplemental Restraint System CHECKING STEERING LINKAGE .................... 12 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- CHECKING GEAR HOUSING MOVEMENT ...... 12 .
SIONER" ................................................................. 2
. CHECKING RACK SLIDING FORCE ................. 12 . PS
Precautions for Steering System ............................. 2 . Removal and Installation ....................................... 13
.
PREPARATION .......................................................... 3
. REMOVAL .......................................................... 14
.
Special Service Tools .............................................. 3. Disassembly and Assembly ................................... 16 .
H
Commercial Service Tool ........................................ 4 . DISASSEMBLY .................................................. 16
.
NOISE, VIBRATION, AND HARSHNESS (NVH) INSPECTION AFTER DISASSEMBLY ............... 16 .
TROUBLESHOOTING ............................................... 5 . ASSEMBLY ........................................................ 17
.
NVH Troubleshooting Chart .................................... 5 . Adjustment for Rack Sliding Force ........................ 18 . I
POWER STEERING FLUID ....................................... 6 . DECREASE ........................................................ 18
.
Checking Fluid Level ............................................... 6. INCREASE ......................................................... 19
.
Checking Fluid Leakage .......................................... 6 . POWER STEERING OIL PUMP .............................. 20 . J
Bleeding Hydraulic System ..................................... 6 . On-Vehicle Service ................................................ 20
.
STEERING WHEEL ................................................... 7 . CHECKING HYDRAULIC SYSTEM ................... 20 .
On-Vehicle service .................................................. 7
. Removal and Installation ....................................... 20
.
K
CHECKING STEERING WHEEL PLAY ............... 7 . REMOVAL .......................................................... 20
.
CHECKING NEUTRAL POSITION ON STEER- INSTALLATION .................................................. 20
.
ING WHEEL ......................................................... 7
. Disassembly and Assembly ................................... 21 .
CHECKING STEERING WHEEL TURNING PRE-DISASSEMBLY INSPECTION ................... 21 . L
FORCE ................................................................. 7
. DISASSEMBLY .................................................. 22
.
FRONT WHEEL TURNING ANGLE ..................... 8 . ASSEMBLY ........................................................ 22
.
Removal and Installation ......................................... 8 . Inspection After Disassembly ................................ 24 . M
REMOVAL ............................................................ 8
. HYDRAULIC LINE ................................................... 25
.
INSTALLATION .................................................... 8 . Removal and Installation ....................................... 25
.
STEERING COLUMN ................................................ 9 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 27 .
Removal and installation ......................................... 9 . General Specifications ........................................... 27
.
Disassembly and Assembly .................................. 10 . Steering Wheel ...................................................... 27
.
Inspection ...............................................................11
. Steering Column .................................................... 27
.
POWER STEERING GEAR AND LINKAGE ........... 12 . Power Steering ...................................................... 27
.
On-Vehicle Service ................................................ 12. Steering Gear and Linkage .................................... 28 .

Revision: May 2004 PS-1 2004 Altima
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EGS000HP

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 EGS000G9

q Before disassembly, thoroughly clean the outside of the unit.
q Disassembly should be done in a clean work area. It is important to prevent the internal parts from
becoming contaminated by dirt or other foreign matter.
q For easier and proper assembly, place disassembled parts in order on a parts rack.
q Use nylon cloths or paper towels to clean the 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 or equivalent to hydraulic
parts. Petroleum jelly 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 installa-
tion. Perform functional tests whenever designated.

Revision: May 2004 PS-2 2004 Altima
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools EGS000GA

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
KV48102500 Measuring oil pressure
(J33914) C
Pressure gauge adapter

S-NT542

ST27180001 Removing steering wheel E
(J25726-A)
Steering wheel puller

S-NT544
PS
HT72520000 Removing ball joint
(J25730-A) a: 33 mm (1.30 in)
Ball joint remover b: 60 mm (2.36 in)
r: 9 mm (0.35 in) radius H

S-NT546
I
KV48103500 Measuring oil pressure
(J26357 and J26357-10)
Pressure gauge J

K
S-NT547

ST3127S000 Measuring turning torque
1 GG91030000 L
(See J25765-A)
Torque wrench
2 HT62940000
( -- ) M
Socket adapter
3 HT62900000
( -- ) S-NT541

Socket adapter

Revision: May 2004 PS-3 2004 Altima
PREPARATION

Commercial Service Tool EGS000GB

Tool number Description
Oil pump attachment Disassembling and assembling oil pump
Unit: mm (in)

S-NT774

Spring gauge Measuring steering wheel turning force and
rack sliding force

LST024

Revision: May 2004 PS-4 2004 Altima
Symptom

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