G37 Coupe V6-3.7L (VQ37VHR) (2008)
Alignment: Testing and Inspection
Front Suspension
Description
CAUTION:
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Camber, caster, kingpin inclination angles cannot be adjusted.
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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.
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Kingpin inclination angle is reference value, no inspection is required.
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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 FAX-4, "Inspection". See: Wheels and Tires/Wheel Hub/Testing and Inspection/Front Axle
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Transverse link or upper link ball joint axial end play. Refer to FSU-25, "Ball Joint". See: Specifications/Mechanical
Specifications/Suspension/System Specifications/Front Suspension/Ball Joint
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Shock absorber operation.
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Each mounting part of axle and suspension for looseness and deformation.
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Each of suspension member, shock absorber, upper link and transverse link for cracks, deformation and other damage.
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Vehicle height (posture).