Nissan Frontier D40. Manual — part 1013

POWER STEERING GEAR AND LINKAGE

ST-15

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POWER STEERING GEAR AND LINKAGE

Removal and Installation

INFOID:0000000005276024

CAUTION:

Spiral cable may snap due to steering operation if the steering column is separated from the steering
gear assembly. Therefore secure the steering wheel to avoid turning.

REMOVAL

1.

Set front wheels in the straight-ahead position.

2.

Remove the front tires from the vehicle, using power tool.

3.

Drain the power steering fluid.

4.

Remove the undercover, using power tool.

5.

On 4WD models, remove the front final drive, then support the drive shafts, using suitable wire. Refer to

DLN-190, "Removal and Installation"

.

6.

Remove the stabilizer bar brackets and reposition the stabilizer bar. Refer to

FSU-14, "Removal and

Installation"

.

7.

Remove the cotter pins at the steering outer sockets.

CAUTION:

Do not reuse the cotter pins.

8.

Loosen the outer socket nuts.

9.

Remove the steering outer sockets from the steering knuckles,
using Tool, then remove the nuts.

CAUTION:

• Do not damage the outer socket boots.
• Do not damage the outer socket threads. Thread the ball

joint nut onto the end of the outer socket during removal.

1.

Cotter pin

2.

Mounting bracket

3.

Mounting insulator

4.

Steering gear assembly

5.

Washer

⇐

Front

AWGIA0024GB

Tool number

: HT72520000 (J-25730-A)

WGIA0130E

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< REMOVAL AND INSTALLATION >

POWER STEERING GEAR AND LINKAGE

10. Remove the high-pressure and low-pressure piping from the

steering gear assembly, then drain the fluid from the piping.

11. Remove the bolt from the lower joint of the lower joint shaft, then

separate the lower joint from the steering gear assembly.

CAUTION:

• Do not damage the lower joint.

12. Remove the nuts and bolts of the steering gear assembly, using

power tool, then remove the steering gear assembly from the
vehicle.

INSTALLATION

Installation is in the reverse order of removal.
• With the steering wheel in the straight ahead position, align the slit

of the lower joint with the projection on the dust cover. Insert the
joint until surface (A) contacts surface (B).

• After removing/installing or replacing steering components, check

wheel alignment. Refer to

FSU-5, "Front Wheel Alignment"

.

• After adjusting wheel alignment, adjust neutral position of the

steering angle sensor if equipped with VDC. Refer to

BRC-189,

"ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION : Special Repair Requirement"

.

• Bleed the air from the steering hydraulic system. Refer to

ST-6,

"Air Bleeding Hydraulic System"

.

INSPECTION AFTER INSTALLATION

• Check that the steering wheel turns smoothly to the left and right locks.
• Check that the number of turns are the same from the straight-forward position to the left and right locks.
• Check that the steering wheel is in the neutral position when driving straight ahead.

LGIA0032E

LGIA0029E

LGIA0024E

SST491C

POWER STEERING OIL PUMP

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POWER STEERING OIL PUMP

Component

INFOID:0000000005276025

QR25DE

AWGIA0125GB

1.

Joint

2.

Suction pipe

3.

O-ring

4.

Front bracket

5.

Pulley

6.

Lock washer

7.

Body assembly

8.

Copper washers

9.

Flow control valve and spring

10. Connector

11.

Rear bracket

Apply Genuine Nissan PSF or equivalent

ST-18

< REMOVAL AND INSTALLATION >

POWER STEERING OIL PUMP

VQ40DE

Removal and Installation

INFOID:0000000005276026

REMOVAL

1.

Drain the power steering fluid from the reservoir tank.

2.

On VQ40DE model, remove the engine room cover. Refer to

EM-138, "Removal and Installation"

.

3.

On VQ40DE model, remove cooling fan assembly. Refer to

CO-47, "Removal and Installation (Motor

driven type)"

(VQ40DE).

4.

Remove the air duct assembly. Refer to

EM-25, "Exploded View"

(QR25DE),

EM-139, "Exploded View"

(VQ40DE).

5.

Remove the serpentine drive belt from the auto tensioner and power steering oil pump. Refer to

EM-14,

"Removal and Installation"

(QR25DE),

EM-127, "Removal and Installation"

(VQ40DE).

6.

Disconnect the pressure sensor electrical connector.

7.

Remove the high pressure and low pressure piping from the power steering oil pump. Refer to

ST-20,

"Removal and Installation"

.

8.

Remove the power steering oil pump bolts, then remove the power steering pump.

INSTALLATION

Installation is in the reverse order of removal.

AWGIA0126GB

1.

Joint

2.

Suction pipe

3.

O-ring

4.

Front bracket

5.

Pulley

6.

Lock washer

7.

Body assembly

8.

Copper washers

Apply Geniune Nissan PSF or equivalent