Infiniti QX56 (JA60). Manual - part 914

STEERING WHEEL

ST-15

< ON-VEHICLE REPAIR >

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ON-VEHICLE REPAIR

STEERING WHEEL

On-Vehicle Inspection and Service

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CHECKING CONDITION OF INSTALLATION

• Check installation condition of steering gear assembly, front suspension, axle and steering column.

• Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial

direction.

• Check if the nuts for steering gear assembly are loose. Refer to

ST-23, "Removal and Installation"

.

CHECKING STEERING WHEEL PLAY

1. Turn tires straight ahead, start engine, then turn steering wheel to the left and right lightly, and measure

steering wheel movement on the outer circumference when steering wheel is turned up to the point where

tires start moving.

CHECKING NEUTRAL POSITION ON STEERING WHEEL

• Check neutral position on steering wheel after confirming that front wheel alignment is correct. Refer to 

FSU-

6, "Front Wheel Alignment"

.

1. Turn tires straight ahead, check if steering wheel is in the neutral position.
2. If it is not in the neutral position, remove steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositioning the steering wheel two teeth or less on steering

stem, loosen tie-rod lock nuts of steering outer sockets, then adjust tie-rods by the same amount in the

opposite direction.

CHECKING STEERING WHEEL TURNING FORCE

1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to operating temperature of 60

°– 80°C (140°– 176°F).

4. Tires need to be inflated to specified pressure. Refer to 

WT-52, "Tire"

.

5. Check steering wheel turning force using Tool when steering

wheel has been turned 360

° from the neutral position.

End play of the axial direction for steering wheel

: Refer to 

ST-35, "Steering Wheel"

.

LGIA0024E

Steering wheel play on the outer circumference  : Refer to 

ST-35, "Steering Wheel"

.

Tool number

—   (J-44372)

Steering wheel 
turning force

: Refer to 

ST-35, "Steering 

Wheel"

.

WGIA0035E

ST-16

< ON-VEHICLE REPAIR >

STEERING WHEEL

6. If steering wheel turning force is out of specification, inspect steering column. Refer to 

ST-29, "Disassem-

bly and Assembly"

 .

7. If steering column meets specification, repair steering gear. Refer to 

ST-31, "Disassembly and Assembly"

.

CHECKING FRONT WHEEL TURNING ANGLE 

When checking front wheel turning angle, refer to 

FSU-23, "Wheel Alignment (Unladen*

1

)"

.

POWER STEERING OIL PUMP

ST-17

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POWER STEERING OIL PUMP

On-Vehicle Inspection and Service

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CHECKING RELIEF OIL PRESSURE

CAUTION:

Before starting work, confirm belt tension is proper.
1. Connect Tool between oil pump discharge connector and high

pressure hose and then bleed air from the hydraulic circuit.

2. Start engine. Allow engine to run until tank temperature reaches 50

°– 80°C (122°– 176°F).

CAUTION:

• Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed,

fluid pressure in power steering pump increases to maximum. This will raise fluid temperature

excessively.

• Be careful not to contact hose with belt when engine is started.

3. With engine at idle, close shut-off valve and read the relief oil pressure.

CAUTION:

Do not close shut-off valve of pressure gauge for more than 10 seconds.

4. After measurement, open shut-off valve slowly.

• If relief oil pressure is outside the specification, repair or replace oil pump. Refer to 

ST-34, "Disassembly

and Assembly"

 .

5. After inspection, disconnect oil pressure gauge and oil pressure gauge adapter from hydraulic circuit, con-

nect oil pump discharge connector and high pressure hose. Add fluid and bleed air from hydraulic circuit

thoroughly. Refer to 

ST-13, "Air Bleeding Hydraulic System"

 .

Tool number:

Pressure gauge and shut-off valve

KV48103500
(J26357 and J26357-10)

Oil pump side

Connector A and O-
ring

KV48105300-4 and 5295262U10 
(

—

)

Eye-bolt and O-ring

KV48105300-3 and 5295262U00 
(

—

)

High pressure 
piping side

Connector B and O-
ring

KV48105300-1 and 5295262U00 
(

—

)

Nut

KV48105300-2
(      — )

SGIA0570E

Relief oil pressure

: Refer to 

ST-37, "Oil Pump"

.

ST-18

< REMOVAL AND INSTALLATION >

STEERING WHEEL

REMOVAL AND INSTALLATION

STEERING WHEEL

Removal and Installation

INFOID:0000000005147870

REMOVAL

1. Set the front wheels in the straight-ahead position.
2. Remove the driver air bag module. Refer to 

SR-5, "Removal and Installation"

.

3. Disconnect steering wheel switches.
4. Remove the steering wheel center nut.
5. Remove the steering wheel using Tool.

CAUTION:

Place a piece of tape across the spiral cable so it will not be

rotated out of position.

6. Disconnect heated steering wheel connector.
7. Inspect the steering wheel near the puller holes for damage. If

damaged, replace the steering wheel.

• Remove steering wheel rear cover and steering wheel

switches, if required.

INSTALLATION

Installation is in the reverse order of removal.

• Align spiral cable correctly when installing steering wheel. 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 and ending with the knob at the top.

• Refer to 

BRC-8, "ADJUSTMENT OF STEERING ANGLE SEN-

SOR NEUTRAL POSITION : Special Repair Requirement"

 for

steering angle sensor adjustment.

• After the work is completed, perform self-diagnosis to make sure

no malfunction is detected. Refer to 

SRC-13, "SRS Operation

Check"

.

• Tighten steering wheel center nut to specification. 

SR-7, "Removal

and Installation"

.

CAUTION:

• The spiral cable may snap due to steering operation if the

cable is not installed in the correct position.

• 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 counterclockwise about

2.5 turns from the neutral position.

Tool number

: ST27180001 (J-25726-A)

SGIA1524J

WGIA0038E

PHIA0275E