Infiniti Q45. Manual - part 746

 

  Index      Infiniti     Infiniti Q45 - service repair manual 2006 year

 

Search            copyright infringement  

 

 

 

 

 

 

 



 

 

Content   ..  744  745  746  747   ..

 

 

Infiniti Q45. Manual - part 746

 

 

PS-1

POWER STEERING SYSTEM

G  STEERING

CONTENTS

C

D

E

F

H

I

J

K

L

M

SECTION 

PS

A

B

PS

POWER STEERING SYSTEM

PRECAUTIONS .......................................................... 2

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Steering System  .............................. 2

PREPARATION ........................................................... 3

Special Service Tools  ............................................... 3
Commercial Service Tools ........................................ 4

NOISE, VIBRATION AND HARSHNESS (NVH) 
TROUBLESHOOTING ................................................ 5

NVH Troubleshooting Chart  ..................................... 5

POWER STEERING FLUID ........................................ 6

Checking Fluid Level  ................................................ 6
Checking Fluid Leakage ........................................... 6
Air Bleeding Hydraulic System  ................................. 7

STEERING WHEEL  .................................................... 8

On-Vehicle Service ................................................... 8

CONDITION OF INSTALLATION  .......................... 8
STEERING WHEEL PLAY  .................................... 8
NEUTRAL POSITION ON STEERING WHEEL 

..... 8

STEERING WHEEL TURNING FORCE  ............... 8
RACK SLIDING FORCE  ....................................... 9
FRONT WHEEL TURNING ANGLE  ..................... 9

Removal and Installation  ........................................ 10

REMOVAL ........................................................... 10
INSTALLATION ................................................... 10

STEERING COLUMN  ................................................11

Removal and Installation  .........................................11

COMPONENT ......................................................11
REMOVAL ............................................................11
INSPECTION AFTER REMOVAL  ....................... 12
INSTALLATION ................................................... 12

Disassembly and Assembly  ................................... 13

COMPONENT ..................................................... 13
DISASSEMBLY ................................................... 14
ASSEMBLY ......................................................... 14

POWER STEERING GEAR  ...................................... 15

Removal and Installation  ........................................ 15

COMPONENT ..................................................... 15
REMOVAL ........................................................... 15
INSTALLATION ................................................... 16

Disassembly and Assembly .................................... 17

COMPONENT ..................................................... 17
DISASSEMBLY ................................................... 18
INSPECTION AFTER DISASSEMBLY ................ 19
ASSEMBLY ......................................................... 20

POWER STEERING OIL PUMP  ............................... 26

On-Vehicle Service  ................................................. 26

RELIEF OIL PRESSURE  .................................... 26

Removal and Installation  ........................................ 27

COMPONENTS ................................................... 27
REMOVAL ........................................................... 27
INSTALLATION ................................................... 27

Disassembly and Assembly .................................... 28

COMPONENT ..................................................... 28
DISASSEMBLY ................................................... 29
INSPECTION AFTER DISASSEMBLY ................ 29
ASSEMBLY ......................................................... 30

HYDRAULIC LINE  .................................................... 32

Removal and Installation  ........................................ 32

SERVICE DATA AND SPECIFICATIONS (SDS)  ...... 34

General Specifications ............................................ 34
Inspection and Adjustment  ..................................... 34

STEERING WHEEL AXIAL END PLAY AND 
PLAY .................................................................... 34
STEERING WHEEL TURNING FORCE  ............. 34
STEERING COLUMN LENGTH  .......................... 34
STEERING ANGLE  ............................................. 34
RACK SLIDING FORCE  ..................................... 34
RACK STROKE ................................................... 35
SOCKET SWING TORQUE AND ROTATING 
TORQUE ............................................................. 35
SOCKET AXIAL END PLAY  ................................ 35
INNER SOCKET LENGTH  .................................. 36

PS-2

PRECAUTIONS

PRECAUTIONS

PFP:00001

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

NGS0002J

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:

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.

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.

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

NGS0002K

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

Observe the following precautions when disassembling.

Before disassembly, thoroughly clean the outside of the unit.

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.

For easier and proper assembly, place disassembled parts in order on a parts rack.

Use nylon cloth or paper towels to clean the parts; common shop rags can leave lint that might interfere
with their operation.

Do not reuse non-reusable parts.

Before assembling, apply the specified grease to the directed parts.

PREPARATION

PS-3

C

D

E

F

H

I

J

K

L

M

A

B

PS

PREPARATION

PFP:00002

Special Service Tools

NGS00040

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.)
Tool name

Description

ST27180001
(J-25726-A)
Steering wheel puller
a: 29 mm (1.14 in)
b: M10 

×

 1.25P

c: M8 

×

 1.25P

Removing steering wheel

ST3127S000
(J-25765-A)

Inspecting sliding torque

Inspecting steering torque

Inspecting rotating torque for ball joint

KV48104400
(

)

Teflon ring correcting tool
a: 50 mm (1.97 in)
b: 58 mm (2.28 in)
c: 100 mm (3.94 in)
d: 36 mm (1.42 in)

Installing rack Teflon ring

KV48103400
(

)

Torque adapter

Inspecting pinon rotating torque

KV48103500
(J-26357 and J-26357-10)
Pressure gauge

Measuring power steering oil pump relief 
pressure

KV48102500
(J-33914)
Pressure gauge adapter

Measuring power steering oil pump relief 
pressure

SGIA1385E

ZZA0806D

SGIA1386E

ZZA0824D

S-NT547

S-NT542

PS-4

PREPARATION

Commercial Service Tools

NGS00041

Tool name

Description

Power tool

Loosening nuts and bolts

PBIC0190E

 

 

 

 

 

 

 

Content   ..  744  745  746  747   ..