Infiniti G37 Coupe. Manual - part 714

FSU-6

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FRONT SUSPENSION ASSEMBLY

ON-VEHICLE MAINTENANCE

FRONT SUSPENSION ASSEMBLY

Inspection

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MOUNTING INSPECTION

Make sure the mounting conditions (looseness, backlash) of each component and component conditions
(wear, damage) are normal.

BALL JOINT AXIAL END PLAY

1.

Set front wheels in a straight-ahead position.

CAUTION:

Never depress brake pedal.

2.

Place an iron bar or equivalent between transverse link or upper link and steering knuckle.

3.

Measure axial end play by prying it up and down.

CAUTION:

Be careful not to damage ball joint boot. never damage the installation position by applying exces-
sive force.

SHOCK ABSORBER

Check for oil leakage, damage and replace if malfunction is detected.

Standard

End play

: Refer to 

FSU-25, "Ball Joint"

.

WHEEL ALIGNMENT

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WHEEL ALIGNMENT

Wheel Alignment Inspection

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Description

CAUTION:

• Camber, caster, kingpin inclination angles cannot be adjusted.
• If camber, caster, or kingpin inclination angle is outside the standard, check front suspension parts

for wear and damage. Replace suspect parts if a malfunction is detected.

• Kingpin inclination angle is reference value, no inspection is required.
• 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.

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). Do not 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). Do not 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.

Preliminary Check

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

WT-92, "Inspection"

.

• Wheel bearing axial end play. Refer to 

FAX-4, "Inspection"

.

• Transverse link or upper link ball joint axial end play. Refer to 

FSU-25, "Ball Joint"

.

• Shock absorber operation.
• Each mounting part of axle and suspension for looseness and deformation.
• Each of suspension member, shock absorber, upper link and transverse link for cracks, deformation and

other damage.

• Vehicle height (posture).

FSU-8

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FRONT COIL SPRING AND SHOCK ABSORBER

ON-VEHICLE REPAIR

FRONT COIL SPRING AND SHOCK ABSORBER

Exploded View

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JPEIA0053GB

FRONT COIL SPRING AND SHOCK ABSORBER

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Removal and Installation

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REMOVAL

1.

Remove tires with power tool.

2.

Remove harness of the wheel sensor from shock absorber.

CAUTION:

Never pull on wheel sensor harness.

3.

Remove brake hose bracket. Refer to 

BR-21, "FRONT : Exploded View"

.

4.

Remove mounting nuts on the lower side of stabilizer connecting rod with power tool.

5.

Remove mounting nuts on upper side of stabilizer connecting rod with power tool, and then remove stabi-
lizer connecting rod from transverse link.

6.

Separate upper link from steering knuckle.

7.

Remove mounting nuts of shock absorber mounting bracket, then remove shock absorber assembly.

INSTALLATION

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

CAUTION:

Never tap on the ball joint cap of the stabilizer connecting rod with a hammer or a similar item when
inserting the stabilizer connecting rod into the transverse link.
• Perform final tightening of bolts and nuts at the shock absorber lower side (rubber bushing), under unladen

conditions with tires on level ground.

Disassembly and Assembly

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DISASSEMBLY

CAUTION:

Never damage shock absorber piston rod when removing components from shock absorber.

1.

Install strut attachment (A) [SST: ST35652000 (

–

)] to shock

absorber and secure it in a vise.

CAUTION:

When installing the strut attachment to shock absorber,
wrap a shop cloth around strut to protect it from damage.

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.

JPEIA0006ZZ