Brake Disc Run-Out Check And Correction
WARNING: This page is about a different car, the 2017 Mitsubishi Mirage G4. However, it is still accessible from the selected car via links, so may be relevant.
- Check for wheel bearing looseness in the axial direction (Refer to WHEEL BEARING END PLAY CHECK ).
- If the end play is within the limit value, secure the brake disc by tightening the M12 X 1.5 nuts evenly to the specified torque 100 N.m (74 ft-lb). If the end play still exceeds the limit value, replace the wheel bearing. Then secure the brake disc by tightening the M12 X 1.5 nuts evenly to the specified torque 100 N.m (74 ft-lb).
- Place a dial gauge ca. 5 mm (0.2 inch) inward from the circumference of the brake disc to measure its run-out.
Limit: 0.06 mm (0.002 inch)
- If the brake disc run-out exceeds the limit value, rephase the brake disc to the hub so that the minimum brake disc run-out is obtained.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CAUTION:- Insert M12 flat washers and then install the adapter as shown before grinding. Failure to use the M12 flat washers will cause the brake disc to be deformed and ground incorrectly.
- To grind the brake disc, ensure that all the M12 x 1.5 nuts are tightened evenly and in a diagonal sequence to the specified torque 100 N.m (74 ft-lb). Failure to use all the M12 x 1.5 nuts, excessive or uneven tightening torque will cause the brake disc to deform or judder.
- If the brake disc run-out exceeds the limit value after rephasing, grind the disc while in place on the vehicle so that the brake disc run-out is within the limit value.NOTE: If it is suspected that the brake disc thickness will be below the limit value, replace the brake disc. Then rephase the brake disc so that the minimum brake disc run-out is obtained, or grind the disc while in place on the vehicle so that its run-out is below the limit value.