Nissan GT-R. Manual - part 301

POWER STEERING FLUID

ST-7

< PERIODIC MAINTENANCE >

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Fill reservoir tank with a sufficient amount of fluid so that fluid level is not below the MIN line while
turning steering wheel.

2.

Start the engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leak-
age.

3.

Repeat step 2 above several times at approximately 3 seconds intervals.

CAUTION:

Never hold the steering wheel in a locked position for more than 10 seconds. (There is the possi-
bility that oil pump may be damaged.)

4.

Check fluid for bubbles and white contamination.

5.

Stop the engine if bubbles or white contamination exist. Perform step 2 and 3 above after waiting until
bubbles and white contamination disappear.

6.

Stop the engine, and then check fluid level.

ST-8

< PERIODIC MAINTENANCE >

STEERING WHEEL

STEERING WHEEL

Inspection

INFOID:0000000009160097

STEERING WHEEL AXIAL END PLAY

1.

Check installation conditions of steering gear assembly, front suspension assembly, axle and steering col-
umn assembly.

2.

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

3.

Check the following items if steering wheel axial end play is out of the standard.
• Check the steering column assembly mounting condition. Refer to 

ST-11, "Exploded View"

.

• Check steering gear assembly mounting condition for looseness. Refer to 

ST-13, "Exploded View"

.

STEERING WHEEL PLAY

1.

Turn steering wheel so that front wheels come to the straight-ahead position.

2.

Start the engine and lightly turn steering wheel to the left and right until front wheels start to move.

3.

Measure steering wheel movement on the outer circumference.

4.

Check the following items if steering wheel play is out of the standard.
• Check backlash for each joint of steering column assembly.
• Check installation condition of steering gear assembly.

NEUTRAL POSITION STEERING WHEEL

1.

Check that steering gear assembly, steering column assembly and steering wheel are installed in the cor-
rect position.

2.

Perform neutral position inspection after wheel alignment. Refer to 

FSU-7, "Inspection"

.

3.

Set the vehicle to the straight-ahead position and check that the steering wheel is in the neutral position.

4.

Loosen outer socket lock nut and turn inner socket to left and right equally to make fine adjustments if
steering wheel is not in the neutral position.

STEERING WHEEL TURNING TORQUE

1.

Park the vehicle on a level and dry surface, apply parking brake.

2.

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

WT-13, "Tire"

.

3.

Remove driver air bag module. Refer to 

SR-11, "Exploded View"

.

4.

Start the engine.

5.

Check that the power steering fluid is at the operating temperature.

Steering wheel axial end 
play

: Refer to 

ST-18, "Steering 

Wheel Axial End Play and 
Play"

.

Steering wheel play

: Refer to 

ST-18, "Steering 

Wheel Axial End Play and 
Play"

.

Fluid temperature

: 50 – 80

°

C (122 – 176

°

F)

STEERING WHEEL

ST-9

< PERIODIC MAINTENANCE >

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6.

Make sure that the reading is within the following specified
range using preload gauge (A) [SST: ST3127S000 (J-25765-A)]. 

7.

If steering wheel turning force is out of the specification, check
rack sliding force and relief hydraulic pressure of oil pump.
Regarding relief hydraulic pressure of oil pump.

FRONT WHEEL TURNING ANGLE

1.

Check front wheel turning angle after toe-in inspection. Refer to 

FSU-7, "Inspection"

.

2.

Place front wheels on turning radius gauges and rear wheels on
stands, so that vehicle can be level.

3.

Check the maximum inner and outer wheel turning angles for LH
and RH road wheels.

4.

With the engine at idle, turn steering wheel from full left stop to
full right stop and measure the turning angles.

Steering wheel turning 
torque

: Refer to 

ST-18, "Steering 

Wheel Turning Torque"

.

JSGIA0431ZZ

FAA0016D

Inner wheel (Angle: A)

: Refer to 

ST-18, "EXCEPT TRACK PACK-SPECIFIC 

SUSPENSION : Steering Angle"

 (Except track pack-

specific suspension), 

ST-18, "TRACK PACK-SPE-

CIFIC SUSPENSION : Steering Angle"

 (Track pack-

specific suspension).

Outer wheel (Angle: B)

: Refer to 

ST-18, "EXCEPT TRACK PACK-SPECIFIC 

SUSPENSION : Steering Angle"

 (Except track pack-

specific suspension), 

ST-18, "TRACK PACK-SPE-

CIFIC SUSPENSION : Steering Angle"

 (Track pack-

specific suspension).

SGIA0055E

ST-10

< REMOVAL AND INSTALLATION >

STEERING WHEEL

REMOVAL AND INSTALLATION

STEERING WHEEL

Exploded View

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Removal and Installation

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REMOVAL

NOTE:
When reconnecting spiral cable, fix cable with a tape so that fixing case and rotating part keep aligned. This
omits neutral position alignment procedure during spiral cable installation.
1.

Set the vehicle to the straight-ahead position.

2.

Remove driver air bag module. Refer to 

SR-11, "Exploded View"

.

3.

Remove steering wheel lock nut after steering is locked.

4.

Remove steering wheel with the steering wheel puller (A) [SST:
ST27180001 (J-25726-A)].
NOTE:
Put paint marks on the steering wheel and the column shaft
head for supporting accurate positioning during the installation
procedure.

INSTALLATION

Note the following, and install in the reverse order of removal.

CAUTION:

Never twist spiral cable freely on excessively after it becomes tight (doing so may cause the cable to
tear off).
NOTE:
Check the spiral cable neutral position after replacing or rotating spiral cable. Refer to 

SR-14, "Removal and

Installation"

.

• Never reuse steering wheel lock nut.

1.

Steering wheel

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSGIA0705GB

NNGIA0005ZZ