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POWER STEERING SYSTEM

G STEERING

POWER STEERING SYSTEM
SECTION PS B

E
CONTENTS
PRECAUTIONS ......................................................... 3
. Components (With Automatic Drive Positioner) .... 17 . F
Precautions for Supplemental Restraint System Disassembly and Assembly ................................... 18 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DISASSEMBLY .................................................. 18.
SIONER" ................................................................. 3
. ASSEMBLY ........................................................ 18
. PS
Precautions Necessary for Steering Wheel Rotation POWER STEERING GEAR AND LINKAGE ........... 19 .
After Battery Disconnect ......................................... 3. Removal and Installation ....................................... 19.
OPERATION PROCEDURE ................................ 3 . REMOVAL .......................................................... 19
.
H
Precautions for Steering System ............................. 3 . INSTALLATION .................................................. 20
.
PREPARATION .......................................................... 5
. INSPECTION AFTER INSTALLATION ............... 21 .
Special Service Tools (SST) .................................... 5 . Disassembly and Assembly ................................... 22 .
Commercial Service Tools ....................................... 6 . DISASSEMBLY .................................................. 23. I
NOISE, VIBRATION AND HARSHNESS (NVH) INSPECTION AFTER DISASSEMBLY ............... 25 .
TROUBLESHOOTING ............................................... 7 . ASSEMBLY ........................................................ 26
.
NVH Troubleshooting Chart .................................... 7 . POWER STEERING OIL PUMP .............................. 31 . J
POWER STEERING FLUID ....................................... 8 . On-Vehicle Inspection and Service ........................ 31 .
Checking Fluid Level ............................................... 8
. CHECKING RELIEF OIL PRESSURE (VQ35DE
Checking Fluid Leakage .......................................... 8 . MODELS) ........................................................... 31
.
K
Air Bleeding Hydraulic System ................................ 8 . CHECKING RELIEF OIL PRESSURE (VK45DE
STEERING WHEEL ................................................. 10 . MODELS) ........................................................... 31
.
On-Vehicle Inspection and Service ....................... 10 . Removal and Installation (VQ35DE Models) ......... 32 .
CHECKING CONDITION OF INSTALLATION ... 10 REMOVAL .......................................................... 32
. L
CHECKING STEERING WHEEL PLAY ............. 10 . INSTALLATION .................................................. 33
.
CHECKING NEUTRAL POSITION ON STEER- Removal and Installation (VK45DE Models) ......... 33 .
ING WHEEL ....................................................... 10
. REMOVAL .......................................................... 33
. M
CHECKING STEERING WHEEL TURNING INSTALLATION .................................................. 33
.
FORCE ............................................................... 10
. Disassembly and Assembly (VQ35DE Models) .... 33 .
CHECKING FRONT WHEEL TURNING ANGLE ....11 INSPECTION BEFORE DISASSEMBLY ............ 33 .
Removal and Installation ........................................11 . DISASSEMBLY .................................................. 34.
STEERING COLUMN .............................................. 12 . INSPECTION AFTER DISASSEMBLY ............... 34 .
Removal and Installation ....................................... 12 . ASSEMBLY ........................................................ 34
.
REMOVAL .......................................................... 12
. Disassembly and Assembly (VK45DE Models) ..... 37 .
INSPECTION AFTER REMOVAL ...................... 14 . INSPECTION BEFORE DISASSEMBLY ............ 37 .
INSTALLATION .................................................. 14. DISASSEMBLY .................................................. 37.
INSPECTION AFTER INSTALLATION .............. 14 . INSPECTION AFTER DISASSEMBLY ............... 38 .
Components (Without Automatic Drive Positioner) 15 ... ASSEMBLY ........................................................ 38
.
Disassembly and Assembly .................................. 15 . HYDRAULIC LINE ................................................... 41
.
DISASSEMBLY .................................................. 15 . Components .......................................................... 41
.
ASSEMBLY ........................................................ 16
. Removal and Installation ....................................... 43.
Component ............................................................ 44
.
Removal and Installation ....................................... 45.

Revision: 2005 July PS-1 2005 FX
SERVICE DATA AND SPECIFICATIONS (SDS) ..... 46 . Steering Outer Socket and Inner Socket ................46 .
Steering Wheel ...................................................... 46
. Steering Gear .........................................................47
.
Steering Angle ....................................................... 46
. Oil Pump ................................................................47
.
Steering Column .................................................... 46
. Steering Fluid .........................................................47
.

Revision: 2005 July PS-2 2005 FX
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AGS000GO

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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: D
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. E
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. F
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. PS
Precautions Necessary for Steering Wheel Rotation After Battery Disconnect
AGS000L5

NOTE: H
q This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
q Remove and install all control units after disconnecting both battery cables with the ignition knob in the I
LOCK position.
q Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
J
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible. K
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE L
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged. M
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ACC position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the LOCK position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Steering System AGS000GP

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 becom-
ing contaminated by dirt or other foreign matter.
q For easier and proper assembly, place disassembled parts in order on a parts rack.

Revision: 2005 July PS-3 2005 FX
PRECAUTIONS

q Use nylon cloth 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 installation.
Perform functional tests whenever designated.

Revision: 2005 July PS-4 2005 FX
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools (SST) AGS000GQ

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

ST3127 S000 C
(See J25765-A)
Preload gauge
1. GG9103000
D
(J25765-A)
Torque wrench Inspecting of sliding torque, steering
2. HT62940000 torque, and rotating torque for ball joint
( -- ) E
Socket adapter
3. HT62900000 S-NT541

( -- )
Socket adapter F

HT72520000
(J25730-A) PS
Ball joint remover
Removing steering outer socket
a: 33 mm (1.3 in)
b: 50 mm (1.97 in)
r: 11.5 mm (0.45 in) H
NT546

KV4810 5400 I
(J-46213)
Rear cover wrench Removing rear cover
a: 21.6 mm (0.85 in)
b: 34.9 mm (1.37 in) J
SGIA0516E

KV48104400 K
( -- )
Teflon ring correcting tool
Installing of rack Teflon ring
a: 50 mm (1.97 in) dia.
L
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in)
S-NT550

KV48103400
( -- ) Inspecting rotating torque
Torque adapter

ZZA0824D

Revision: 2005 July PS-5 2005 FX
PREPARATION

Tool number
(Kent-Moore No.) Description
Tool name

1. KV48102500-04
( -- )
Washer
2. KV48102500-01
( -- )
Eye joint
3. KV48102500-03
Measuring oil pump relief pressure
( -- )
(VQ35DE models)
Bolt
4. KV48102500-02
( -- )
SGIA0442E
Flare Joint
5. KV48103500
(J26357&J26357-10)
Pressure gauge & shut off valve
1. KV48105300-4 and 5295262U10
( -- )
Connector A and O-ring
2. KV48105300-3 and 5295262U00
( -- )
Eye-bolt and O-ring
3. KV48103500
Measuring oil pump relief pressure
(J26357 and J26357-10)
(VK45DE models)
Pressure gauge and shut-off valve
4. KV48105300-1 and 5295262U00
( -- )
Connector B and O-ring SGIA0427E

5. KV48105300-2
( -- )
Nut

Commercial Service Tools AGS000GR

Tool name Description

q Removing wheel nuts
Power tool q Removing undercover
q Removing steering gear

PBIC0190E

Revision: 2005 July PS-6 2005 FX
Symptom

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