G37 Coupe V6-3.7L (VQ37VHR) (2008)
Alignment: Service and Repair
Rear Suspension
Inspection and Adjustment
MOUNTING INSPECTION
Make sure the mounting conditions (looseness, backlash) of each component and component conditions (wear, damage) are normal.
BALL JOINT AXIAL END PLAY
Measure axial end play by placing and moving up/down with an iron bar or equivalent between suspension arm and axle assembly.
Standard
End play: Refer to RSU-28, "Ball Joint". See: Specifications/Mechanical Specifications/Suspension/System Specifications/Rear Suspension/Ball Joint
CAUTION:
Be careful not to damage ball joint boot.
SHOCK ABSORBER
Check for oil leakage, damage and replace if malfunction is detected.
Wheel Alignment Inspection
Description
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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
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A four-wheel thrust alignment should be performed.
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This type of alignment is recommended for any NISSAN/INFINITI vehicle.
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The four-wheel "thrust" process helps ensure that the vehicle is properly aligned and the steering wheel is centered.
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The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
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The rack should be checked to ensure that it is level.
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Make sure the machine is properly calibrated.
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Your alignment equipment should be regularly calibrated in order to give correct information.
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Check with the manufacturer of your specific equipment for their recommended Service/Calibration Schedule.
Alignment Process
IMPORTANT:
Use only the alignment specifications listed in this Service Manual.
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When displaying the alignment settings, many alignment machines use "indicators": (Green/red, plus or minus, Go/No Go). Do not use these
indicators.
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The alignment specifications programmed into your machine that operate these indicators may not be correct.
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This may result in an ERROR.
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Some newer alignment machines are equipped with an optional "Rolling Compensation" method to "compensate" the sensors (alignment targets or
head units). Do not use this "Rolling Compensation" method.
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Use the "Jacking Compensation Method". After installing the alignment targets or head units, raise the vehicle and rotate the wheels 1/2 turn both
ways.
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See Instructions in the alignment machine you're using for more information on this.
Preliminary Check
Check the following:
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Tires for improper air pressure and wear.
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Road wheels for runout. Refer to WT-92, "Inspection". See: Wheels and Tires/Wheels/Testing and Inspection
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Wheel bearing axial end play. Refer to RAX-5, "Inspection". See: Wheels and Tires/Wheel Hub/Testing and Inspection/Rear Axle
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Ball joint axial end play of suspension arm. Refer to RSU-28, "Ball Joint". See: Specifications/Mechanical Specifications/Suspension/System
Specifications/Rear Suspension/Ball Joint
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Shock absorber operation.
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Each mounting point of axle and suspension for looseness and deformation.
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Each of front lower link, rear lower link, radius rod, rear suspension member, suspension arm and shock absorber for cracks, deformation, and
other damage.
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Vehicle height (posture).
ADJUSTMENT