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POWER STEERING SYSTEM


G STEERING

                                                                                                                                                               A




                                                                       POWER STEERING SYSTEM
                                                                                                    SECTION                   PS                               B



                                                                                                                                                               C


                                                                                                                                                               D


                                                                                                                                                               E
                                                                  CONTENTS
PRECAUTIONS ......................................................... 3  .           INSPECTION AFTER INSTALLATION OF                                          F
 Precautions for Supplemental Restraint System                                       STEERING COLUMN ASSEMBLY .................... 13                 .
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                           Disassembly and Assembly ................................... 13    .
 SIONER" ................................................................. 3
                                                                         .           COMPONENT (WITHOUT AUTOMATIC DRIVE                                        PS
 Precautions for Steering System ............................. 3         .           POSITIONER) .................................................... 13
                                                                                                                                                      .
PREPARATION .......................................................... 4 .           DISASSEMBLY .................................................. 14.
 Special Service Tools (SST) .................................... 4      .           INSPECTION AFTER DISASSEMBLY ............... 14                  .
                                                                                                                                                               H
 Commercial Service Tools ....................................... 5      .           ASSEMBLY ........................................................ 14
                                                                                                                                                      .
NOISE, VIBRATION AND HARSHNESS (NVH)                                                 INSPECTION AFTER ASSEMBLY ..................... 14               .
TROUBLESHOOTING ............................................... 6        .           COMPONENT (WITH AUTOMATIC DRIVE
 NVH Troubleshooting Chart .................................... 6        .           POSITIONER) .................................................... 15
                                                                                                                                                      .         I
POWER STEERING FLUID ....................................... 7           .           DISASSEMBLY .................................................. 16.
 Checking Fluid Level ............................................... 7  .           INSPECTION AFTER DISASSEMBLY ............... 16                  .
 Checking Fluid Leakage .......................................... 7     .           ASSEMBLY ........................................................ 16
                                                                                                                                                      .         J
 Air Bleeding Hydraulic System ................................ 7        .           INSPECTION AFTER ASSEMBLY ..................... 16               .
STEERING WHEEL ................................................... 9     .        POWER STEERING GEAR AND LINKAGE ........... 17                      .
 On-Vehicle Inspection and Service ......................... 9           .         Removal and Installation ....................................... 17.
                                                                                                                                                               K
   CHECKING CONDITION OF INSTALLATION ..... 9                                        REMOVAL .......................................................... 17
                                                                                                                                                      .
   CHECKING STEERING WHEEL PLAY ............... 9                        .           INSTALLATION .................................................. 18
                                                                                                                                                      .
   CHECKING NEUTRAL POSITION ON STEER-                                               INSPECTION AFTER INSTALLATION ............... 18                 .
   ING WHEEL ......................................................... 9 .        POWER STEERING GEAR ..................................... 19        .        L
   CHECKING STEERING WHEEL TURNING                                                 Component ............................................................ 19
                                                                                                                                                      .
   FORCE ................................................................. 9
                                                                         .         Disassembly and Assembly ................................... 20    .
   CHECKING FRONT WHEEL TURNING ANGLE 10                                 ...         DISASSEMBLY .................................................. 20.        M
 Removal and Installation ....................................... 10     .           INSPECTION AFTER DISASSEMBLY ............... 21                  .
STEERING COLUMN ...............................................11        .           ASSEMBLY ........................................................ 22
                                                                                                                                                      .
 Removal and Installation ........................................11     .        POWER STEERING OIL PUMP .............................. 27           .
   COMPONENT .....................................................11     .         On-Vehicle Inspection and Service ........................ 27      .
   REMOVAL OF LOWER JOINT, LOWER SHAFT,                                              CHECKING RELIEF OIL PRESSURE ............... 27                  .
   HOLE COVER, CLAMP, HOLE COVER SEAL,                                             Removal and Installation ....................................... 27.
   COLLAR AND UPPER JOINT ............................11                 .           REMOVAL .......................................................... 27
                                                                                                                                                      .
   INSTALLATION OF LOWER JOINT, LOWER                                                INSTALLATION .................................................. 28
                                                                                                                                                      .
   SHAFT, HOLE COVER, CLAMP, HOLE COVER                                            Disassembly and Assembly ................................... 28    .
   SEAL, COLLAR AND UPPER JOINT ................ 12                      .           INSPECTION BEFORE DISASSEMBLY ............ 28                    .
   REMOVAL OF STEERING COLUMN ASSEM-                                                 DISASSEMBLY .................................................. 28.
   BLY ..................................................................... 12
                                                                         .           INSPECTION AFTER DISASSEMBLY ............... 29                  .
   INSPECTION AFTER REMOVAL OF STEER-                                                ASSEMBLY ........................................................ 29
                                                                                                                                                      .
   ING COLUMN ASSEMBLY ................................ 12               .        HYDRAULIC LINE ................................................... 32
                                                                                                                                                      .
   INSTALLATION OF STEERING COLUMN                                                 Removal and Installation (For A/T Models) ........... 32           .
   ASSEMBLY ........................................................ 13  .


Edition; 2004 September                                                      PS-1                                                    2005 G35 Sedan
 Removal and Installation (For M/T Models) ........... 33           .          Steering Column ....................................................35.
 Removal and Installation (For AWD Models) ......... 34             .          Steering Outer Socket and Inner Socket ................35             .
SERVICE DATA AND SPECIFICATIONS (SDS) ..... 35                      .          Steering Gear .........................................................36
                                                                                                                                                     .
 Steering Wheel ...................................................... 35
                                                                    .          Oil Pump ................................................................36
                                                                                                                                                     .
 Steering Angle ....................................................... 35
                                                                    .          Steering Fluid .........................................................36
                                                                                                                                                     .




Edition; 2004 September                                                 PS-2                                                      2005 G35 Sedan
                                             PRECAUTIONS

PRECAUTIONS                                                         PFP:00001
                                                                                                                       A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER"                                                                                         AGS0001P


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 for Steering System                                                                             AGS0001M


q   Before disassembly, thoroughly clean the outside of the unit.
                                                                                                                       H
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.
                                                                                                                       I
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 in order on a parts.
                                                                                                                       J
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.
                                                                                                                       K
    Perform functional tests whenever designated.


                                                                                                                       L



                                                                                                                       M




Edition; 2004 September                              PS-3                                       2005 G35 Sedan
                                            PREPARATION

PREPARATION                                                                                                     PFP:00002

Special Service Tools (SST)                                                                                           AGS00003


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


    HT2520000
    (J25730-A)
    Ball joint remover
                                                                       Removing outer socket ball joint
    a: 33 mm (1.30 in)
    b: 50 mm (1.97 in)
    r: 11.5 mm (0.453 in)
                                                           NT546


    ST3127S000
    (J25765 - A)
    Preload gauge
     1. GG9103000
        (J25765 - A)
       Torque wrench
                                                                       Inspecting of rotating torque for ball joint
     2. HT62940000
        (    



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