Infiniti QX56 (JA60). Manual - part 918

POWER STEERING GEAR AND LINKAGE

ST-31

< DISASSEMBLY AND ASSEMBLY >

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POWER STEERING GEAR AND LINKAGE

Disassembly and Assembly

INFOID:0000000005147877

CAUTION:

• Secure steering gear assembly with a vise, using copper plates or something similar to prevent it

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

• Before performing disassembly, clean steering gear assembly with kerosene. Be careful not to bring

any kerosene into contact with the discharge and return port connectors.

DISASSEMBLY

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

CAUTION:

When removing boots, be careful not to damage inner socket and gear housing assembly. If they

are damaged, change them to avoid oil leaks.

4. Remove 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

AWGIA0116GB

ST-32

< DISASSEMBLY AND ASSEMBLY >

POWER 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 suitable tool. When ball stud and inner socket start moving the measured

value must be within the specification. If the reading is outside the specification, replace the socket. Refer to

ST-36, "Steering Outer Socket and Inner 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.
2. Install the large-diameter side of the boots to the gear housing

assembly.

3. Install the small-diameter side of the boots to the groove of the

inner sockets.

Item

Outer socket

Inner socket

Measuring point

Cotter pin hole of stud 

Shown as L: 83.2 mm (3.276 in)

Swing torque

0.3 

− 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)

1.0 

− 7.8 N·m (0.11 − 0.79 kg-m, 9 − 69 in-lb)

Measuring value (F)

4.84 

− 46.7 N (0.50 − 4.7 kg-f, 4 - 34 lb-f)

12.1 

− 93.7 N (1.3 − 9.5 kg-f, 9 − 69 lb-f)

Tool number

: ST3127S000 (J-25765-A)

Rotating torque : 0.3 

− 2.9 N·m (0.03 − 0.29 kg-m, 

3 

− 25 in-lb)

WGIA0132E

Outer socket : 0.5 mm (0.020 in) or less
Inner socket

: 0.2 mm (0.008 in) or less

SGIA0057E

SGIA0550E

POWER STEERING GEAR AND LINKAGE

ST-33

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4. Install the boot clamps to the boots, as shown.

CAUTION:

Do not reuse the large-diameter boot clamps.

5. Crimp the large-diameter boot clamps, using Tool.

6. Install the cylinder tubes to the gear housing assembly.
7. Install the lock nuts and outer sockets to the inner sockets.

8. Thread the outer sockets onto the inner sockets to the specified

length (L), then tighten the lock nuts to the specification. Refer to

ST-23, "Removal and Installation"

. Reconfirm that the tie-rod

length (L) is within specification.

AST139

Tool number

: KV40107300 ( — )

RAC1133D

Maximum inner socket 
length (L)

: 102.2 mm (4.02 in)

SGIA0167E

ST-34

< DISASSEMBLY AND ASSEMBLY >

POWER STEERING OIL PUMP

POWER STEERING OIL PUMP

Disassembly and Assembly

INFOID:0000000005147878

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 washers.

CAUTION:

Do not reuse the copper 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.

CAUTION:

• Do not reuse the copper gaskets

• Do not reuse the O-ring. Apply a coat of Genuine Nissan PSF or equivalent to the O-ring.

1.

Bracket

2.

Spring washer

3.

Pulley

4.

Power steering pump

5.

High pressure hose bracket

6.

O-ring

7.

Suction pipe

Front

LGIA0038E