Infiniti QX56 (Z62). Manual — part 1066

RSU-6

< PERIODIC MAINTENANCE >

WHEEL ALIGNMENT

WHEEL ALIGNMENT

Inspection

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DESCRIPTION

Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.

PRELIMINARY CHECK

Check the following:
• Tires for improper air pressure and wear
• Road wheels for runout. Refer to

WT-64, "Inspection"

.

• Wheel bearing axial end play. Refer to

RAX-5, "Inspection"

.

• Ball joint axial end play of suspension arm and front lower link. Refer to

RSU-20, "Ball Joint"

.

• Shock absorber operation
• Each mounting point of axle and suspension for looseness and deformation
• Each of front lower link, rear lower link, rear suspension member, suspension arm and shock absorber for

cracks, deformation, and other damage

• Vehicle height (posture)

GENERAL INFORMATION AND RECOMMENDATIONS

• A four-wheel thrust alignment should be performed.
- This type of alignment is recommended for any NISSAN/INFINITI vehicle.
- The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel is

centered.

- The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
- The rack should be checked to ensure that it is level.
• Make sure the machine is properly calibrated.
- Your alignment equipment should be regularly calibrated in order to give correct information.
- Check with the manufacturer of your specific equipment for their recommended Service/Calibration Sched-

ule.

ALIGNMENT PROCESS

IMPORTANT:
Use only the alignment specifications listed in this Service Manual.
• When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or

minus, Go/No Go). Never use these indicators.

- The alignment specifications programmed into your machine that operate these indicators may not be cor-

rect.

- This may result in an ERROR.
• Some newer alignment machines are equipped with an optional “Rolling Compensation” method to “com-

pensate” the sensors (alignment targets or head units). Never use this “Rolling Compensation” method.

- Use the “Jacking Compensation Method”. After installing the alignment targets or head units, raise the vehi-

cle and rotate the wheels 1/2 turn both ways.

- See Instructions in the alignment machine you're using for more information on this.

Adjustment

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CAMBER

WHEEL ALIGNMENT

RSU-7

< PERIODIC MAINTENANCE >

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Adjust with adjusting bolt (1) in front lower link (2).

CAUTION:

• When tightening the nut firmly and checking the torque, use a

wrench to prevent the turning of bolt.

• After adjusting camber, be sure to check toe-in.
• If camber is not still within the specification, inspect and replace

any damaged or worn suspension parts.

TOE-IN

Adjust with adjusting bolt (1) in rear lower link (2).

CAUTION:

• Be sure to adjust equally on right and left side with adjusting

bolt.

• When tightening the nut firmly and checking the torque, use a

wrench to prevent the turning of bolt.

• If toe-in is not still within the specification, inspect and replace any

damaged or worn suspension parts.

Camber

: Refer to

RSU-20, "Wheel Alignment"

.

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Toe-In

: Refer to

RSU-20, "Wheel Alignment"

.

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RSU-8

< REMOVAL AND INSTALLATION >

REAR LOWER LINK & COIL SPRING

REMOVAL AND INSTALLATION

REAR LOWER LINK & COIL SPRING

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove tires with power tool. Refer to

WT-64, "Removal and Installation"

.

2.

Remove wheel sensor harness. Refer to

BRC-135, "REAR WHEEL SENSOR : Removal and Installation"

.

3.

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

EXL-136, "Removal and Installation"

.

4.

Remove vehicle height sensor from rear lower link (left side). Refer to

SCS-98, "Removal and Installa-

tion"

.

5.

Set suitable jack under rear lower link.

6.

Using a spring compressor (commercial service tool), compress coil spring between rubber seat and
upper seat until coil spring with a spring compressor is free.

CAUTION:

Be sure a spring compressor is securely attached coil spring. Compress coil spring.

7.

Remove rear lower link mounting bolt (axle housing side).

8.

Slowly lower jack, then remove upper seat, coil spring and rubber seat from rear lower link.

9.

Remove rear lower link mounting nut, eccentric disc, and adjusting bolt and then remove rear lower link.

10. Perform inspection after removal. Refer to

RSU-9, "Inspection"

.

INSTALLATION

Note the following, and install in the reverse order of removal.

1.

Rear suspension member

2.

Adjusting bolt

3.

Rear lower link

4.

Eccentric disc

5.

Rubber seat

6.

Coil spring

7.

Upper seat

Refer to

GI-4, "Components"

for symbols in the figure.

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REAR LOWER LINK & COIL SPRING

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< REMOVAL AND INSTALLATION >

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• Make sure that upper seat and rubber seat are attached as shown

in the figure.

• When installing the coil spring (1), check that coil spring is

attached as shown in the figure.

• Perform the final tightening of rear suspension member and axle

housing rubber bushing position under unladen condition with tires
on level ground.

• Perform inspection after installation. Refer to

RSU-9, "Inspection"

.

Inspection

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INSPECTION AFTER REMOVAL

Check rear lower link, bushing and coil spring for deformation, crack, and damage. Replace it if necessary.

INSPECTION AFTER INSTALLATION

1.

Check wheel alignment. Refer to

RSU-6, "Inspection"

.

2.

Adjust neutral position of steering angle sensor. Refer to

BRC-64, "Work Procedure"

.

3.

Adjust levelizer adjustment of height sensor. Refer to

EXL-61, "LEVELIZER ADJUSTMENT : Special

Repair Requirement"

.

4.

Check standard vehicle height setting of vehicle height sensor. Refer to

SCS-67, "Work Procedure"

.

: Vehicle outside

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A

: Vehicle upper side

B

: Two paint marks

C

: One paint mark

D

: Vehicle inside

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