Nissan Frontier. Manual - part 1182

 

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Nissan Frontier. Manual - part 1182

 

 

POWER STEERING FLUID

ST-7

< PERIODIC MAINTENANCE >

C

D

E

F

H

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K

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A

B

ST

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CAUTION:

Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-

ity that oil pump may be damaged.)

4. Repeat step 3 several times at about three second intervals. 
5. Check for air bubbles, cloudy fluid and fluid leakage.
6. If air bubbles or cloudiness exists, perform steps 3 and 4 again until air bubbles and cloudiness do not

exist.

7. Stop the engine and check fluid level.

ST-8

< PERIODIC MAINTENANCE >

POWER STEERING OIL PUMP

POWER STEERING OIL PUMP

On-Vehicle Inspection and Service

INFOID:0000000009479918

CHECKING RELIEF OIL PRESSURE

CAUTION:

Before starting work, confirm that the belt tension is within specification. Refer to 

EM-14, "Checking

Drive Belts"

 (QR25DE), 

EM-129, "Checking Drive Belts"

 (VQ40DE).

1. Connect the Tool between the power steering oil pump dis-

charge connector and the high pressure hose, then bleed the air

from the hydraulic circuit. Refer to 

ST-6, "Air Bleeding Hydraulic

System"

.

2. Start the engine. Run the engine until the power steering fluid temperature reaches 50

°– 80°C (122°–

176

°F).

CAUTION:

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

valve closed, fluid pressure in the power steering oil pump increases to maximum pressure.

This will raise fluid temperature excessively.

• Do not contact the belt with the hose while the engine is running.

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

CAUTION:

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

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

• If relief oil pressure is outside the specification, replace the power steering oil pump. Refer to 

ST-18,

"Removal and Installation"

.

5. After inspection, disconnect the oil pressure gauge and oil pressure gauge adapter from the hydraulic cir-

cuit, then connect the power steering oil pump discharge connector. Add fluid and bleed the air from the

hydraulic circuit thoroughly. Refer to 

ST-6, "Air Bleeding Hydraulic System"

.

Tool number:

Pressure gauge and shut-off valve

KV48103500
(J-26357 and J-26357-10)

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 (      —

)

WGIA0129E

Relief oil pressure

Refer to 

ST-31, "Oil Pump"

STEERING WHEEL

ST-9

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STEERING WHEEL

On-Vehicle Inspection and Service

INFOID:0000000009479919

CHECKING CONDITION OF INSTALLATION

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

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

direction.

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

ST-15

.

CHECKING STEERING WHEEL PLAY

1. Turn the tires straight ahead and start the engine. Lightly turn the steering wheel left and right to the point

where the tires start moving, and measure the distance that the outer circumference of the steering wheel

travels.

CHECKING NEUTRAL POSITION ON STEERING WHEEL

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

to 

FSU-6, "Front Wheel Alignment"

.

1. Turn the tires straight ahead, check if the steering wheel is in the neutral position.
2. If it is not in the neutral position, remove the steering wheel and reinstall it correctly on the steering stem,

within two teeth of the original position. 

3. If the neutral position cannot be attained by repositioning the steering wheel within two teeth on the steer-

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

amount in the opposite direction of the steering wheel.

CHECKING STEERING WHEEL TURNING FORCE

1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring the power steering fluid up to adequate operating temperature. Make sure the fluid temperature is

approximately 50

° – 80°C (122° – 176°F).

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

WT-53, "Tire"

.

End play of the axle direction 
for steering wheel

Refer to 

ST-30, "Steering 

Wheel"

LGIA0024E

Steering wheel play on the outer circumference  Refer to 

ST-30, "Steering 

Wheel"

ST-10

< PERIODIC MAINTENANCE >

STEERING WHEEL

5. Check steering wheel turning force using Tool when steering

wheel has been turned 360

° from the neutral position.

6. If steering wheel turning force is out of specification,  inspect the

following:

• Steering column. Refer to 

ST-12, "Removal and Installation"

.

• Power steering oil pump. Refer to 

ST-8, "On-Vehicle Inspec-

tion and Service"

.

7. If steering column and power steering oil pump meet specifications, replace steering gear. Refer to 

ST-15,

"Removal and Installation"

.

CHECKING FRONT WHEEL TURNING ANGLE 

When checking the front wheel turning angle, refer to 

FSU-6, "Front Wheel Alignment"

.

Tool number

:

(J-44372)

Steering wheel 
turning force

Refer to 

ST-30, "Steering 

Wheel"

WGIA0035E

 

 

 

 

 

 

 

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