Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Quest 2004-2009 Approved Nissan Quest 2007 PS
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G STEERING
A
POWER STEERING SYSTEM
SECTION PS B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 2. POWER STEERING GEAR AND LINKAGE ........... 14 . F
Precautions for Supplemental Restraint System On-Vehicle Service ................................................ 14
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- CHECKING STEERING GEAR .......................... 14 .
SIONER" ................................................................. 2
. CHECKING STEERING LINKAGE .................... 14 . PS
Precautions for Steering System ............................. 2 . CHECKING GEAR HOUSING MOVEMENT ...... 14 .
PREPARATION .......................................................... 3
. CHECKING RACK SLIDING FORCE ................. 14 .
Special Service Tools .............................................. 3. Removal and Installation ....................................... 15
.
H
Commercial Service Tool ........................................ 4 . REMOVAL .......................................................... 15
.
NOISE, VIBRATION, AND HARSHNESS (NVH) INSTALLATION .................................................. 16
.
TROUBLESHOOTING ............................................... 5 . Disassembly and Assembly ................................... 17 .
NVH Troubleshooting Chart .................................... 5 . DISASSEMBLY .................................................. 17
. I
POWER STEERING FLUID ....................................... 6 . INSPECTION AFTER DISASSEMBLY ............... 18 .
Checking Fluid Level ............................................... 6. ASSEMBLY ........................................................ 18
.
Checking Fluid Leakage .......................................... 6 . Adjustment for Rack Sliding Force ........................ 19 . J
Bleeding Hydraulic System ..................................... 6 . DECREASE ........................................................ 19
.
STEERING WHEEL ................................................... 7 . INCREASE ......................................................... 20
.
On-Vehicle Service .................................................. 7
. POWER STEERING OIL PUMP .............................. 21 .
K
CHECKING STEERING WHEEL PLAY ............... 7 . On-Vehicle Service ................................................ 21
.
CHECKING NEUTRAL POSITION ON STEER- CHECKING HYDRAULIC SYSTEM ................... 21 .
ING WHEEL ......................................................... 7
. Removal and Installation ....................................... 22
.
CHECKING STEERING WHEEL TURNING REMOVAL .......................................................... 22
. L
FORCE ................................................................. 7
. INSTALLATION .................................................. 22
.
FRONT WHEEL TURNING ANGLE .................... 8 . Disassembly and Assembly ................................... 23 .
Removal and Installation ......................................... 8 . INSPECTION BEFORE DISASSEMBLY ............ 23 . M
REMOVAL ............................................................ 8
. DISASSEMBLY .................................................. 23
.
INSTALLATION .................................................... 8 . ASSEMBLY ........................................................ 23
.
STEERING COLUMN ................................................ 9 . HYDRAULIC LINE ................................................... 24
.
Removal and Installation ......................................... 9 . Removal and Installation ....................................... 24
.
REMOVAL ............................................................ 9
. REMOVAL .......................................................... 24
.
INSPECTION AFTER REMOVAL ...................... 10 . INSTALLATION .................................................. 24
.
INSTALLATION ...................................................11 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 25 .
INSPECTION AFTER INSTALLATION ...............11 . General Specifications ........................................... 25
.
Disassembly and Assembly .................................. 12 . Steering Wheel ...................................................... 25
.
DISASSEMBLY .................................................. 12 . Steering Column .................................................... 25
.
ASSEMBLY ........................................................ 12. Power Steering ...................................................... 25
.
Inspection .............................................................. 12
. Steering Gear and Linkage .................................... 26 .
Revision: March 2006 PS-1 2007 Quest
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EGS0010G
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:
G 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.
G 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.
G 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 EGS0010H
G Before disassembly, thoroughly clean the outside of the unit.
G 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.
G For easier and proper assembly, place disassembled parts in order on a parts rack.
G Use nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
G Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
G 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.
G Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during installa-
tion. Perform functional tests whenever designated.
Revision: March 2006 PS-2 2007 Quest
PREPARATION
PREPARATION PFP:00002
A
Special Service Tools EGS0011X
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
(J-33914) C
Pressure gauge adapter
D
S-NT542
KV48103500 Measuring oil pressure E
(J-26357 and J-26357-10)
Pressure gauge
F
S-NT547
PS
HT72520000 Removing ball joint
(J-25730-A)
Ball joint remover
H
NT146 I
KV481J0010 Removing steering wheel
(J-1859-A)
Steering wheel puller J
K
LHIA0043E
KV481J0020 Removing steering wheel
(J-42578) L
Steering wheel puller legs
M
LHIA0044E
Revision: March 2006 PS-3 2007 Quest
PREPARATION
Commercial Service Tool EGS0011Y
Tool number Description
Spring gauge Measuring steering wheel turning force or
rack sliding force
LST024
Oil pump attachment Disassembling and assembling oil pump
Unit: mm (in)
S-NT774
Power tool Loosening bolts and nuts
PBIC0190E
Revision: March 2006 PS-4 2007 Quest
Symptom
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