Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti M45 M35 Y50 2006-2007 Approved M45_M35-Y50-2007 ps

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POWER STEERING SYSTEM

G STEERING

POWER STEERING SYSTEM
SECTION PS B

E
CONTENTS
PRECAUTIONS ......................................................... 3
. INSTALLATION OF UPPER JOINT, COLLAR, F
Precautions for Supplemental Restraint System HOLE COVER SEAL, HOLE COVER, LOWER
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- SHAFT AND LOWER JOINT ............................. 14 .
SIONER" ................................................................. 3
. REMOVAL OF STEERING COLUMN ASSEM- PS
Precautions Necessary for Steering Wheel Rotation BLY ..................................................................... 15
.
After Battery Disconnect ......................................... 3. INSPECTION AFTER REMOVAL ...................... 16 .
OPERATION PROCEDURE ................................ 3 . INSTALLATION OF STEERING COLUMN
H
Precautions for Steering System ............................. 4 . ASSEMBLY ........................................................ 16 .
PREPARATION .......................................................... 5
. INSPECTION AFTER INSTALLATION ............... 16 .
Special Service Tools .............................................. 5
. Disassembly and Assembly ................................... 17 .
Commercial Service Tools ....................................... 6 . COMPONENTS .................................................. 17 . I
NOISE, VIBRATION AND HARSHNESS (NVH) DISASSEMBLY .................................................. 17 .
TROUBLESHOOTING ............................................... 7 . INSPECTION AFTER DISASSEMBLY ............... 17 .
NVH Trouble Shooting Chart ................................... 7 . ASSEMBLY ........................................................ 17 . J
POWER STEERING FLUID ....................................... 8 . INSPECTION AFTER ASSEMBLY ..................... 18 .
Checking Fluid Level ............................................... 8
. POWER STEERING GEAR AND LINKAGE ........... 19 .
Checking Fluid Leakage .......................................... 8 . Removal and Installation ....................................... 19 .
K
Air Bleeding Hydraulic System ................................ 8 . COMPONENTS .................................................. 19 .
STEERING WHEEL ................................................. 10 . REMOVAL .......................................................... 19 .
On-Vehicle Inspection and Service ....................... 10 . INSTALLATION .................................................. 20 .
CHECKING CONDITION OF INSTALLATION ... 10 INSPECTION AFTER INSTALLATION ............... 20 . L
CHECKING STEERING WHEEL PLAY ............. 10 . Disassembly and Assembly ................................... 21 .
CHECKING NEUTRAL POSITION STEERING COMPONENTS .................................................. 21 .
WHEEL .............................................................. 10
. DISASSEMBLY .................................................. 22 . M
CHECKING STEERING WHEEL TURNING INSPECTION AFTER DISASSEMBLY ............... 23 .
FORCE ............................................................... 10
. ASSEMBLY ........................................................ 25 .
CHECKING FRONT WHEEL TURNING ANGLE ....11 POWER STEERING OIL PUMP .............................. 30 .
Removal and Installation ....................................... 12 . On-Vehicle Inspection and Service ........................ 30 .
REMOVAL .......................................................... 12
. CHECKING RELIEF OIL PRESSURE ............... 30 .
INSTALLATION .................................................. 12. Removal and Installation ....................................... 30 .
STEERING COLUMN .............................................. 13 . REMOVAL .......................................................... 30 .
Removal and Installation ....................................... 13 . INSTALLATION .................................................. 30 .
COMPONENTS ................................................. 13 . Disassembly and Assembly (Models with VK45DE) 31 ...
REMOVAL OF UPPER JOINT, COLLAR, HOLE COMPONENTS .................................................. 31 .
COVER SEAL, HOLE COVER, LOWER SHAFT INSPECTION BEFORE DISASSEMBLY ............ 31 .
AND LOWER JOINT .......................................... 14 . DISASSEMBLY .................................................. 32 .
INSPECTION AFTER REMOVAL ...................... 14 . INSPECTION AFTER DISASSEMBLY ............... 32 .

Revision: 2007 April PS-1 2007 M35/M45
ASSEMBLY ........................................................ 33
. Steering Wheel .......................................................45
.
Disassembly and Assembly (Models with VQ35DE) 35 ... Steering Angle ........................................................45
.
COMPONENTS .................................................. 35
. Steering Column ....................................................45.
INSPECTION BEFORE DISASSEMBLY ............ 35 . STEERING COLUMN LENGTH ..........................45 .
DISASSEMBLY .................................................. 36
. TILT AND TELESCOPIC MECHANISM OPER-
INSPECTION AFTER DISASSEMBLY ............... 36 . ATING RANGE ...................................................45 .
ASSEMBLY ........................................................ 37
. Steering Gear .........................................................46
.
HYDRAULIC LINE ................................................... 39
. STEERING OUTER SOCKET AND INNER
Removal and Installation ....................................... 39
. SOCKET .............................................................46
.
COMPONENTS (VQ35DE 2WD MODELS) ....... 39 . RACK STROKE ..................................................46 .
COMPONENTS (VQ35DE AWD MODELS) ....... 41 . RACK SLIDING FORCE .....................................46 .
COMPONENTS (VK45DE MODELS) ................ 43 . Oil Pump ................................................................46
.
Removal and Installation ....................................... 44
. Steering Fluid .........................................................46
.
SERVICE DATA AND SPECIFICATIONS (SDS) ..... 45 .

Revision: 2007 April PS-2 2007 M35/M45
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NGS000CZ

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
NGS000D0

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-III 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-III.

Revision: 2007 April PS-3 2007 M35/M45
PRECAUTIONS

Precautions for Steering System NGS000D1

q In case of removing steering gear assembly, make the final tightening with grounded and unloaded vehi-
cle condition, and then check wheel alignment.
q Observe the following precautions when disassembling.

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