Infiniti QX56 (Z62). Manual - part 739

FSU-16

< REMOVAL AND INSTALLATION >

LOWER LINK

2.

Move tip of ball stud in axial direction to check for looseness.

• If axial end play exceeds standard range, replace lower link assembly.

INSPECTION AFTER INSTALLATION

1.

Check wheel sensor harness for proper connection. Refer to 

BRC-134, "FRONT WHEEL SENSOR :

Exploded View"

.

2.

Check wheel alignment. Refer to 

FSU-7, "Inspection"

.

3.

Adjust neutral position of steering angle sensor. Refer to 

BRC-64, "Work Procedure"

.

4.

Adjust levelizer adjustment of height sensor. Refer to 

EXL-61, "LEVELIZER ADJUSTMENT : Special

Repair Requirement"

.

Axial end play

: Refer to 

FSU-21, "Ball Joint"

.

UPPER LINK

FSU-17

< REMOVAL AND INSTALLATION >

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UPPER LINK

Exploded View

INFOID:0000000006225649

Removal and Installation

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REMOVAL

1.

Remove tires with power tool. Refer to 

WT-64, "Removal and Installation"

.

2.

Remove brake hose bracket from steering knuckle. Refer to 

BR-23, "FRONT : Removal and Installation"

.

3.

Remove caliper assembly mounting bolts. Hang caliper assembly in a place where it will not interfere with
work. Refer to 

BR-37, "BRAKE CALIPER ASSEMBLY : Removal and Installation"

.

CAUTION:

Never depress brake pedal while brake caliper is removed.

4.

Remove disc rotor. Refer to 

FAX-8, "Removal and Installation"

 (2WD), 

FAX-18, "Removal and Installation"

(4WD).

5.

Remove wheel sensor and harness connector. Refer to 

BRC-134, "FRONT WHEEL SENSOR : Removal

and Installation"

.

CAUTION:

Never pull on wheel sensor harness.

6.

Remove height sensor from upper link (right side). Refer to 

EXL-136, "Removal and Installation"

.

7.

Set suitable jack under lower link.

8.

Separate upper link from steering knuckle. Refer to 

FAX-8, "Removal and Installation"

 (2WD), 

FAX-18,

"Removal and Installation"

 (4WD).

9.

Remove upper link mounting bolts, nuts, and upper link from vehicle.

10. Perform inspection after removal. Refer to 

FSU-18, "Inspection"

.

1.

Upper link

2.

Eccentric disc

3.

Lower link

4.

Bump rubber

5.

Adjusting bolt

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPEIA0237GB

FSU-18

< REMOVAL AND INSTALLATION >

UPPER LINK

INSTALLATION

Note the following, and install in the reverse order of removal.
• Perform final tightening of bolts and nuts at the vehicle installation position (rubber bushing), under unladen

conditions with tires on level ground.

• Perform inspection after installation. Refer to 

FSU-18, "Inspection"

.

Inspection

INFOID:0000000006225651

INSPECTION AFTER REMOVAL

Appearance

Check the following items, and replace the part if necessary.
• Upper link and bushing for deformation, cracks or damage.
• Ball joint boot for cracks or other damage, and also for grease leakage.

Ball Joint Inspection

Manually move ball stud to confirm it moves smoothly with no binding.

Swing Torque Inspection

1.

Move the ball joint at least ten times by hand to check for smooth movement.

2.

Hook a spring balance (A) at cotter pin mounting hole. Confirm
spring balance measurement value is within specifications when
ball stud begins moving.

• If swing torque exceeds standard range, replace upper link assem-

bly.

Rotating Torque Inspection

1.

Move the ball joint at least ten times by hand to check for smooth movement.

2.

Attach mounting nut to ball stud. Check that rotating torque is
within specifications with a preload gauge [SST: 3127S000 (J-
25765-A)] (A).

• If rotating torque exceeds standard range, replace lower link

assembly.

Axial End Play Inspection

1.

Move the ball joint at least ten times by hand to check for smooth movement.

2.

Move tip of ball stud in axial direction to check for looseness.

• If axial end play exceeds standard range, replace upper link assembly.

INSPECTION AFTER INSTALLATION

1.

Check wheel sensor harness for proper connection. Refer to 

BRC-134, "FRONT WHEEL SENSOR :

Exploded View"

.

2.

Check wheel alignment. Refer to 

FSU-7, "Inspection"

.

3.

Adjust neutral position of steering angle sensor. Refer to 

BRC-64, "Work Procedure"

.

Swing torque

: Refer to 

FSU-21, "Ball Joint"

.

JPEIA0005ZZ

Rotating toque

: Refer to 

FSU-21, "Ball Joint"

.

PDIA1258E

Axial end play

: Refer to 

FSU-21, "Ball Joint"

.

UPPER LINK

FSU-19

< REMOVAL AND INSTALLATION >

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4.

Adjust levelizer adjustment of height sensor. Refer to 

EXL-61, "LEVELIZER ADJUSTMENT : Special

Repair Requirement"

.