G37x Coupe AWD V6-3.7L (VQ37VHR) (2009)
Brake Rotor/Disc: Service and Repair
Front Disc Brake
FRONT DISC BRAKE
DISC ROTOR : Inspection and Adjustment
INSPECTION
Appearance
Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace it if necessary.
Runout
1. Fix the disc rotor to the wheel hub and bearing assembly with wheel nuts (2 points at least).
2. Check the wheel bearing axial end play before the inspection. Refer to (2WD), See: Maintenance/Wheels and Tires/Wheel Hub/Testing and
Inspection/Initial Inspection and Diagnostic Overview(AWD).
3. Inspect the runout with a dial indicator to measure at 10 mm
(0.39 in) inside the disc edge.
Limit
Runout : Refer to BR-78, "Front Disc Brake". See:
4. Find the installation position that has a minimum runout by shifting the disc rotor-to-wheel hub and bearing assembly installation position by one
hole at a time if the runout exceeds the limit value.
5. Replace or refinish the disc rotor if the runout is outside the limit even after performing the above operation. [When refinishing, use the Pro-Cut
PEM On-Car brake Lathe (Tool No. 38-PFM90.5) or equivalent.]
Thickness
Check the thickness of the disc rotor using a micrometer. Replace the disc rotor if the thickness is below the wear limit.
Limit
Wear thickness : Refer to BR-78, "Front Disc Brake". See:
Thickness variation : Refer to BR-78, "Front Disc Brake". See:
ADJUSTMENT
CAUTION:
-
Burnish contact surfaces between disc rotors and pads according to the following procedure after refinishing or replacing disc rotor, or if
a soft pedal occurs at very low mileage.
-
Be careful of vehicle speed because the brake does not operate firmly/securely until pad and disc rotor are securely fitted.