2. Measure the thickness of the brake pads.
- Standard: 4.0 mm
- Minimum allowable: 1.0 mm
If the thickness of the pads is less than the minimum or they have uneven wear, replace the brake pads.
Note: If any brake pad needs to be replaced, replace all rear brake pads.
3. Measure the inside diameter of the brake drum.
- Standard: 200.0 mm
- Maximum allowable: 201.0 mm
If the drum is worn or damaged, it can be machined to the maximum allowable inside diameter.
4. Check up tightness of an overlay of a brake shoe to a drum.
If the contact between the working surfaces is poor, replace the brake pads.