Nissan Xterra. Manual - part 612

POWER STEERING OIL PUMP

ST-23

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POWER STEERING OIL PUMP

Disassembly and Assembly

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INSPECTION BEFORE DISASSEMBLY

Disassemble the power steering oil pump only if the following items are found.

• Deformed or damaged pulley, bracket, connector or suction pipe

• Oil leakage from the suction pipe or connector. 

DISASSEMBLY

NOTE:

Mount the power steering oil pump in a vise as needed.
1. Remove the connector bolt, connector and copper sealing washers.

CAUTION:

Do not reuse the copper sealing washers.

2. Remove the suction pipe and O-ring.

CAUTION:

Do not reuse the O-ring.

3. Remove the pulley nut and pulley.
4. Remove the bracket bolts and bracket.

INSPECTION AFTER DISASSEMBLY

Body Assembly Inspection

Check the power steering oil pump body assembly for damage. If any damage is found, replace with a new

power steering oil pump assembly.

ASSEMBLY

Assembly is in the reverse order of disassembly.

1.

Connector

2.

Suction pipe

3.

O-ring

4.

Bracket

5.

Pulley

6.

Lock washer

7.

Body assembly

8.

Copper sealing washers

Apply Genuine Nissan PSF or equivalent

AWGIA0137GB

ST-24

< UNIT DISASSEMBLY AND ASSEMBLY >

POWER STEERING OIL PUMP

CAUTION:

• Do not reuse the copper sealing washers.

• Do not reuse the O-ring. 

• Apply a coat of Genuine NISSAN PSF or equivalent to the O-ring. Refer to 

MA-12, "Fluids and Lubri-

cants"

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STEERING GEAR AND LINKAGE

ST-25

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STEERING GEAR AND LINKAGE

Disassembly and Assembly

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CAUTION:

• Secure the gear housing assembly with a vise. Use copper plates or equivalent to prevent it from

being damaged. Do not grip the cylinder with a vise.

• Before performing disassembly, clean the gear housing assembly. Be careful not to allow any

cleaner to contact the discharge and return port connectors.

DISASSEMBLY

1. Remove the cylinder tubes from the gear housing assembly.
2. Loosen the lock nuts of the outer sockets, then remove the outer sockets from the inner sockets.
3. Remove the boot clamps from the boots, then remove the boots from the inner sockets and gear housing

assembly.

CAUTION:

• Do not reuse the large-diameter boot clamps.

• Do not damage the boots, inner socket or gear housing assembly. If they are damaged, replace

them.

4. Remove the inner sockets.

INSPECTION AFTER DISASSEMBLY

Boot

Check boot for tears, cracks and deformation. Replace if necessary.

1.

Boot clamp

2.

Inner socket

3.

Boot

4.

Boot clamp

5.

Outer socket

6.

Cylinder tubes

7.

Gear housing assembly

8.

Connector

AWGIA0139GB

ST-26

< UNIT DISASSEMBLY AND ASSEMBLY >

STEERING GEAR AND LINKAGE

Gear Housing Assembly

Check gear housing assembly for dents, cracks or damage. Replace as an assembly if necessary.

Outer Socket and Inner Socket

SWING TORQUE

• Measure the swing torque, using Tool. When ball stud and inner

socket start moving the measured value must be within the specifi-

cation. If the reading is outside the specification, replace the

socket.

ROTATING TORQUE

• Measure the rotating torque, using Tool. If the value is outside the

specification, replace the outer sockets.

AXIAL END PLAY

• Apply a load of 490 N (50 kg-f, 110 lb-f) to the ball stud axially. Use

a dial gauge to measure the amount of the movement that the stud

makes. If the value is outside the specification, replace the sock-

ets.

ASSEMBLY

1. Install the inner sockets.

Tool number

:

—

(J-44372)

Outer socket 
swing torque

Refer to 

ST-29, "Steering Gear"

AWGIA0153ZZ

Item

Outer socket

Inner socket

Measuring point

Cotter pin hole of stud 

Refer to 

ST-29, "Steering Gear"

Swing torque

Refer to 

ST-29, "Steering Gear"

Refer to 

ST-29, "Steering Gear"

Measuring value

ST-29, "Steering Gear"

Refer to 

ST-29, "Steering Gear"

Tool number

: ST3127S000 (J-25765-A)

Outer socket 
rotating torque

Refer to 

ST-29, "Steering Gear"

WGIA0132E

Outer socket : Refer to 

ST-29, "Steering 

Gear"

Inner socket

: Refer to 

ST-29, "Steering 

Gear"

SGIA0057E