1998 NISSAN PATROL Removal steering wheel

STEERING SYSTEM
SECTION
ST
CONTENTS
PRECAUTIONS AND PREPARATION............................1
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''...............1
Precautions for Steering System .................................1
Special Service Tools ..................................................1
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................3
NVH Troubleshooting Chart.........................................3
ON-VEHICLE SERVICE..................................................4
Checking Steering Wheel Play ....................................4
Checking Neutral Position on Steering Wheel ............4
Front Wheel Turning Angle ..........................................4
Checking and Adjusting Drive Belts ............................5
Checking Fluid Level ...................................................5
Checking Fluid Leakage ..............................................5
Bleeding Hydraulic System..........................................6
Checking Steering Wheel Turning Force ....................6
Checking Hydraulic System.........................................6
STEERING WHEEL AND STEERING COLUMN............8
Removal and Installation .............................................8
Disassembly and Assembly .......................................10Inspection................................................................... 11
POWER STEERING SYSTEM (Model: PB69K)..........12
Description .................................................................12
POWER STEERING GEAR (Model: PB69K)...............13
Removal and Installation ...........................................13
Inspection...................................................................13
POWER STEERING OIL PUMP....................................15
Removal and Installation ...........................................15
Disassembly and Assembly .......................................16
Pre-disassembly Inspection .......................................16
Inspection...................................................................17
Disassembly...............................................................17
Assembly ...................................................................18
STEERING LINKAGE....................................................19
Removal and Installation ...........................................19
Disassembly...............................................................20
Inspection...................................................................20
SERVICE DATA AND SPECIFICATIONS (SDS)..........22
General Speci®cations ...............................................22
Inspection and Adjustment ........................................22
ST

Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''
The Supplemental Restraint System such as ``AIR BAG'' and ``SEAT BELT PRE-TENSIONER'' used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger in a frontal collision.
The SRS system composition which is available to NISSAN MODEL Y61 is as follows (The composition var-
ies according to the destination.):
Driver air bag module (located in the center of the steering wheel), front passenger air bag module (located
on the instrument panel on passenger side), seat belt pre-tensioner, a diagnosis sensor unit, warning lamp,
wiring harness and spiral cable.
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
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 in¯ation, all maintenance must be performed
by an authorized NISSAN 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 RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation either just before
the harness connectors or for the complete harness are related to the SRS.
Precautions for Steering System
+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
becoming contaminated by dirt or other foreign matter.
+Place disassembled parts in order, on a parts rack, for easier and proper assembly.
+Use nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
+Before inspection or reassembly, carefully clean all parts with a general purpose, non-¯ammable
solvent.
+Before assembly, apply a coat of recommended ATF* to hydraulic parts. Vaseline may be applied
to O-rings and seals. Do not use any grease.
+Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated.
*: Automatic Transmission Fluid type DEXRON
TMIII or equivalent
Special Service Tools
Tool number
Tool nameDescription
KV48100700
Torque adapter
NT169
Measuring turning torque
ST27180001
Steering wheel puller
NT544
Removing steering wheel
PRECAUTIONS AND PREPARATION
ST-1

Removal and Installation
V1Air bag module
V2Steering wheel
V3Spiral cable
V4Combination switch
V5Steering column assembly
V6Column cover
V7Lower shaft
V8Coupling
CAUTION:
+The rotation of the spiral cable (SRS ``Air bag'' component
part) is limited. If the steering gear must be removed, set
the front wheels in the straight-ahead direction. Do not
rotate the steering column while the steering gear is
removed.
+Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
STEERING WHEEL
+Remove air bag module and spiral cable. Refer to RS section
(``Removal Ð Air Bag Module and Spiral Cable'', ``SUPPLE-
MENTAL RESTRAINT SYSTEM'').
SST758C
SBF812E
STEERING WHEEL AND STEERING COLUMN
ST-8

+Align spiral cable correctly when installing steering wheel.
a. Set the front wheels in the straight-ahead position.
b. Make sure that the spiral cable is in the neutral position.
The neutral position is detected by turning left 2.5 revolutions
from the right end position. Align the two marks (
,
m).
CAUTION:
The spiral cable may snap due to steering operation if the
cable is installed in an improper position.
Also, with the steering linkage disconnected, the cable may
snap by turning the steering wheel beyond the limited number
of turns. (The spiral cable can be turned up to 2.5 turns from
the neutral position to both the right and left.)
+Remove steering wheel with Tool.
STEERING COLUMN
+When installing steering column, ®ngertighten all lower bracket
and clamp retaining bolts; then tighten them securely. Do not
apply undue stress to steering column.
+When attaching coupling joint, be sure tightening bolt faces
cutout portion.
SRS276
SST777C
SST759C
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont'd)
ST-9