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STEERING SYSTEM

SECTION ST

CONTENTS

AIR

BAG ² and ² SEAT BELT PRE-TENSIONER ² ...............2

Precautions for Steering System .................................2

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

Special Service Tools ..................................................3

Commercial Service Tool .............................................4

NOISE, VIBRATION AND HARSHNESS (NVH)

TROUBLESHOOTING .....................................................5

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

ON-VEHICLE SERVICE ..................................................6

Checking Steering Wheel Play ....................................6

Checking Neutral Position on Steering Wheel ............6

PRE-CHECKING ........................................................6

CHECKING ...............................................................6

Front Wheel Turning Angle ..........................................6

Checking Gear Housing Movement ............................6

Checking and Adjusting Drive Belts ............................7

Checking Steering Gear and Linkage .........................7

STEERING GEAR ......................................................7

STEERING LINKAGE .................................................7

Checking Fluid Level ...................................................7

Checking Fluid Leakage ..............................................7

Bleeding Hydraulic System ..........................................8

Checking Steering Wheel Turning Force ....................8

Checking Hydraulic System .........................................9

STEERING WHEEL AND STEERING COLUMN ......... 11

Components ............................................................... 11

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

STEERING WHEEL ................................................. 11

STEERING COLUMN ...............................................12

Disassembly and Assembly .......................................14

Inspection ...................................................................15

TILT MECHANISM ...................................................15

POWER STEERING GEAR AND LINKAGE ................16

Components ...............................................................16

Removal and Installation ...........................................17

Disassembly ...............................................................18

Inspection. ..................................................................19

BOOT .....................................................................19

RACK .....................................................................19

GEAR SUB-ASSEMBLY ...........................................19

GEAR HOUSING CYLINDER ....................................19

TIE-ROD OUTER AND INNER SOCKETS . .................20

Assembly ...................................................................20

Adjustment .................................................................23

POWER STEERING OIL PUMP (QG ENGINE) ...........25

Components ...............................................................25

Pre-disassembly Inspection .......................................25

Disassembly ...............................................................26

Inspection. ..................................................................27

Assembly ...................................................................27

POWER STEERING OIL PUMP (YD ENGINE) ............29

Components ...............................................................29

Pre-disassembly Inspection .......................................29

Removal and Installation ...........................................30

Disassembly ...............................................................30

Inspection. ..................................................................31

Assembly ...................................................................32

SERVICE DATA AND SPECIFICATIONS (SDS) .........33

General Specifications ...............................................33

Steering Wheel ..........................................................33

Steering Column ........................................................33

Steering Gear and Linkage .......................................34

Power Steering ..........................................................35

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

Supplemental Restraint System (SRS)

PRECAUTIONS

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

Supplemental Restraint System (SRS) “AIR

BAG” and “SEAT BELT PRE-TENSIONER” NJST0044

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 system composition which is available to NISSAN MODEL N16 is as follows (The compo-

sition 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).

Information necessary to service the system safely is included in the RS section of 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 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. 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. SRS wiring harnesses (except “SEAT BELT PRE-TENSIONER” connector) can be

identified by yellow harness connector.

Precautions for Steering System

NJST0003

+ 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-flammable

solvent.

+ Before assembly, apply a coat of recommended power steering fluid* 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.

*: DEXRON TM III or equivalent. Refer to MA-16, “Fluids and Lubricants”.

ST-2

PREPARATION

Special Service Tools

NJST0004

Tool number

Tool name

Description

KV48100700

Torque adapter

Measuring pinion rotating torque

NT169

KV48102500

Pressure gauge adapter

Measuring oil pressure

NT542

ST27180001

Steering wheel puller

Removing steering wheel

NT544

HT72520000

Ball joint remover

Removing ball joint

a: 33 mm (1.30 in)

b: 50 mm (1.97 in)

r: R11.5 mm (0.453 in)

NT546

KV48103500

Pressure gauge

Measuring oil pressure

NT547

KV48104400

Rack seal ring reformer

Reforming teflon ring

a: 50 mm (1.97 in) dia.

b: 36 mm (1.42 in) dia.

c: 100 mm (3.94 in)

NT550

ST3127S000

1 GG91030000

Torque wrench

2 HT62940000

Socket adapter

3 HT62900000

Socket adapter

Measuring turning torque

NT541

ST-3

PREPARATION

Commercial Service Tool

NJST0005

Tool number

Description

Oil pump attachment

Disassembling and assembling oil pump

Unit: mm (in)

NT774

KV48105210

Sprocket holder

Removing and Installing power steering oil pump

NT809

ST-4

Fluid level

ST-7

Air in hydraulic system

ST-8

Tie-rod ball joint swinging force

Tie-rod ball joint rotating torque

ST-20

Tie-rod ball joint end play

ST-20

Steering gear fluid leakage

Steering wheel play

ST-7

ST-6

Steering gear rack sliding force

ST-8

Drive belt looseness

Improper steering wheel

Refer to EM-16.

—

Improper installation or looseness or tilt lock lever

ST-11

Mounting rubber deterioration

Steering column deformation or damage

ST-6

ST-15

Improper installation or looseness of steering column

ST-14

Steering linkage looseness

DRIVE SHAFT

ST-16

AX-3

AXLE

AX-3

SUSPENSION

TIRES

SU-4

ROAD WHEEL

SU-4

BRAKES

BR-7

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