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
INFOID:0000000005147868
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
.
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
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
LGIA0024E
Steering wheel play on the outer circumference : Refer to
Tool number
— (J-44372)
Steering wheel
turning force
: Refer to
.
WGIA0035E
ST-16
< ON-VEHICLE REPAIR >
STEERING WHEEL
6. If steering wheel turning force is out of specification, inspect steering column. Refer to
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
POWER STEERING OIL PUMP
ST-17
< ON-VEHICLE REPAIR >
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POWER STEERING OIL PUMP
On-Vehicle Inspection and Service
INFOID:0000000005147869
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
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-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"
steering angle sensor adjustment.
• After the work is completed, perform self-diagnosis to make sure
no malfunction is detected. Refer to
.
• Tighten steering wheel center nut to specification.
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
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