Front Brake Disk Run-Out Check And Correction
WARNING: This page is about a different variant/trim than selected.
- Remove the brake assembly, and then hold it with wire.
- Temporarily install the disk with the hub nut.
- Place a dial gauge approximately 5 mm (0.2 inch) from the outer circumference of the brake disk, and measure the run-out of the disk.
Limit:
0.06 mm (0.0024 inch) <Front>
0.08 mm (0.0032 inch) <Rear>
- When the brake disk run-out exceeds the limit value, correct the brake disk run-out according to the following procedure.
- Before removing the brake disk, make marks using a chalk to the stud bolt on the side with the greater run-out and to both sides of the stud bolt.
- Check the wheel bearing axial looseness. (Refer to WHEEL BEARING END PLAY CHECK <Front> or WHEEL BEARING END PLAY CHECK <Rear>.)
- When the looseness is within the limit value, install the brake disk after changing the phase between the hub and the brake disk, then check the run-out of the brake disk again.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CAUTION:- After a new brake disk is installed, always grind the brake disk with on-the-car type brake lathe. If this step is not carried out, the brake disk run-out exceeds the specified value, resulting in judder.
- When the on-the-car type lathe is used, first install M12 flat washer on the stud bolt in the brake disk side according to the figure, and then install the adapter. If the adapter is installed with M12 flat washer not seated, the brake disk rotor may be deformed, resulting in inaccurate grinding.
- Grind the brake disk with all wheel nuts diagonally and equally tightened to the specified torque 100 N.m (74 ft-lb). When all numbers of wheel nuts are not used, or the tightening torque is excessive or not equal, the brake disk rotor or drum may be deformed, resulting in judder.
- If the run-out cannot be corrected by changing the phase of the brake disk, replace the brake disk or grind it with the on-the-car type brake lathe ("MAD, DL-8700PF" or equivalent).