2. Remove the brake pads (see above).
3. Using a micrometer, measure the disc thickness at eight points approximately 45°apart and 10 mm from the outer edge of the disc. If the smallest dimension is less than the overgrinding limit, replace the brake disc.
Brake Disc Thickness:
- Standard: 22.9-23.1mm
- Regrinding limit: 21.0 mm
- Brake disc parallelism: 0.015mm
4. If the parallelism of the brake disc is not as specified, regrind the brake disc on a lathe to bore the brake drums on the car. Kwik Lathes manufactured by Kwik-way manufacturing Co. are recommended for this operation. and machine tools «Front Brake Disc Lathe», offered by Snap-on Tools Co.