Infiniti G37 Coupe. Manual — part 718

FSU-22

< ON-VEHICLE REPAIR >

FRONT SUSPENSION MEMBER

Removal and Installation

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REMOVAL

1.

Remove tire with power tool.

2.

Remove under cover with power tool.

3.

Remove suspension member stay with power tool.

4.

Separate steering gear assembly and lower joint. Refer to

ST-26, "Exploded View"

.

5.

Remove steering outer socket from steering knuckle.

6.

Remove wheel sensor from steering knuckle. Refer to

BRC-100, "Exploded View"

.

7.

Remove stabilizer connecting rod from transverse link. Refer to

FSU-19, "Exploded View"

.

8.

Remove front stabilizer. Refer to

FSU-19, "Exploded View"

.

9.

Install engine slinger, and then hoist engine.

10. Remove transverse link from front suspension member with power tool. Refer to

FSU-13, "Exploded

View"

.

11. Remove steering hydraulic piping bracket and steering gear from front suspension member. Refer to

ST-

45, "Exploded View"

.

12. Set suitable jack front suspension member.

13. Remove mounting nuts between engine mounting insulator and from suspension member. Refer to

EM-

67, "Exploded View"

.

14. Remove mounting bolts and nuts of front suspension member with power tool.

15. Gradually lower jack to remove front suspension assembly from vehicle.

INSTALLATION

Note the following, and install in the reverse order of removal.
• Perform final tightening of installation position between front suspension member and transverse links (rub-

ber bushing) under unladen condition with tires on level ground.

Inspection

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INSPECTION AFTER REMOVAL

Check the front suspension member for significant deformation, cracks, or damages. Replace if necessary.

INSPECTION AFER INSTALLATION

• Check wheel alignment. Refer to

FSU-25, "Wheel Alignment"

.

• Adjust the neutral position of the steering angle sensor after checking the wheel alignment. Refer to

BRC-8,

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

.

10. Suspension member stay

11. Stabilizer clamp

12. Stabilizer bushing

13. Stabilizer connecting rod

14. Stabilizer bar

15. Cotter pin

16. Steering knuckle

17. Upper link

18. Stopper rubber

Refer to

GI-4, "Components"

for symbols in the figure.

FRONT SUSPENSION ASSEMBLY

FSU-23

< REMOVAL AND INSTALLATION >

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REMOVAL AND INSTALLATION

FRONT SUSPENSION ASSEMBLY

Exploded View

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JPEIA0053GB

FSU-24

< REMOVAL AND INSTALLATION >

FRONT SUSPENSION ASSEMBLY

Removal and Installation

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REMOVAL

Remove suspension assembly with engine assembly from vehicle. Refer to

EM-67, "Exploded View"

.

INSTALLATION

Install in the reverse order of removal.

Inspection

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INSPECTION AFTER INSTALLATION

• Check wheel alignment. Refer to

FSU-25, "Wheel Alignment"

.

• Adjust the neutral position of the steering angle sensor after checking the wheel alignment. Refer to

BRC-8,

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

.

• Check wheel sensor harness for proper connection. Refer to

BRC-100, "Exploded View"

.

1.

Mounting seal

2.

Shock absorber mounting bracket

3.

Bound bumper

4.

Rubber seat

5.

Coil spring

6.

Shock absorber

7.

Insulator

8.

Transverse link

9.

Front suspension member

10. Suspension member stay

11. Stabilizer clamp

12. Stabilizer bushing

13. Stabilizer connecting rod

14. Stabilizer bar

15. Cotter pin

16. Steering knuckle

17. Upper link

18. Stopper rubber

Refer to

GI-4, "Components"

for symbols in the figure.

SERVICE DATA AND SPECIFICATIONS (SDS)

FSU-25

< SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Wheel Alignment

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Measure value under unladen* conditions.

*: Fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions.

Ball Joint

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Camber
Degree minute (Decimal degree)

Minimum

–1

°

10

′

(–1.17

°

)

Nominal

–0

°

25

′

(–0.42

°

)

Maximum

0

°

20

′

(0.33

°

)

Left and right difference

0

°

33

′

(0.55

°

) or less

Caster
Degree minute (Decimal degree)

Minimum

4

°

05

′

(4.08

°

)

Nominal

4

°

50

′

(4.83

°

)

Maximum

5

°

35

′

(5.58

°

)

Left and right difference

0

°

39

′

(0.65

°

) or less

Kingpin inclination
Degree minute (Decimal degree)

Minimum

6

°

40

′

(6.67

°

)

Nominal

7

°

25

′

(7.42

°

)

Maximum

8

°

10

′

(8.17

°

)

Total toe-in

Distance

Minimum

0 mm (0 in)

Nominal

In 1 mm (0.04 in)

Maximum

In 2 mm (0.08 in)

Angle (left wheel or right wheel)
Degree minute (Decimal Degree)

Minimum

0

°

00 (0.00

°

)

Nominal

In 0

°

02

′

30

″

(0.04

°

)

Maximum

In 0

°

05

′

(0.08

°

)

Swing torque

Transverse link

0.5 – 3.6 N·m (0.06 – 0.36 kg-m, 5 – 31 in-lb)

Upper link

0 – 2.0 N·m (0 – 0.2 kg-m, 0 – 17 in-lb)

Measurement on spring balance

Transverse link

7.8 – 56.3 N (0.8 – 5.7 kg, 1.8 – 12.7 lb)

Upper link

0 – 61.5 N (0 – 6.3 kg, 0 – 13.8 lb)

Rotating torque

Transverse link

0.5 – 3.9 N·m (0.06 – 0.39 kg-m, 5 – 34 in-lb)

Upper link

0 – 2.0 N·m (0 – 0.2 kg-m, 0 – 17 in-lb)

Axial end play

0 mm (0 in)