Description .................................................................12
Removal and Installation ...........................................14
Inspection and Adjustment ........................................15

POWER STEERING OIL PUMP

....................................16

Removal and Installation ...........................................16

STEERING LINKAGE

....................................................17

Removal and Installation ...........................................17
Disassembly and Assembly.......................................19
Inspection...................................................................20

SERVICE DATA AND SPECIFICATIONS (SDS)

..........22

General Specifications...............................................22
Inspection and Adjustment ........................................22

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 for certain types of
collision. The SRS composition which is available to NISSAN MODEL R20 is as follows (The composition
varies according to the destination and optional equipment.):

For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.

For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).

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 should be per-
formed 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.

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 tape either just
before the harness connectors or for the complete harness are related to the SRS.

Precautions for SRS “AIR BAG” and “SEAT
BELT PRE-TENSIONER” Service

Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.

Before servicing the SRS, turn ignition switch “OFF”, disconnect both battery cables and wait at least 3
minutes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.

Diagnosis sensor unit must always be installed with their arrow marks “

” pointing towards the front of

the vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before
installation and replace as required.

The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.

Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad
side facing upward and place front side air bag module (built-in type) standing with stud bolt side setting
bottom.

Conduct self-diagnosis to check entire SRS for proper function after replacing any components.

After air bag inflates, the front instrument panel assembly should be replaced if damaged.

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.

When disassembling parts, be sure to place them in order on a part rack so they can be reinstalled
in their proper positions.

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-flammable
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

PRECAUTIONS

ST-2

Special Service Tools

*: Special tool or commercial equivalent

Tool number
Tool name

Description

KV48100700
Torque adapter

Measuring pinion rotating torque

ST27180001*
Steering wheel puller

Removing and installing steering wheel

ST27850000
Ball joint remover

Removing ball joint

ST29020001*
Steering gear arm puller

Removing and installing pitman arm

ST3127S000*

GG91030000
Torque wrench

HT62940000
Socket adapter

HT62900000
Socket adapter

Measuring turning torque

KV48100301*
Strut & steering gearbox
attachment

Steering gear is installed

KV48103500-A
Pressure gauge

Measuring oil pressure

KV48102500
Pressure gauge adapter

Measuring oil pressure

KV481009S0
Oil seal drift set

KV48100910
Drift

KV48100920
Adapter

KV48100930
Adapter

Installing oil seal

PREPARATION

ST-3

Content .. 312 313 314 315 ..