2. Measure the thickness of the brake pad linings.
- Minimum thickness - 1.0 mm
- Nominal thickness - 5.0 mm
If the pad lining thickness is less than the minimum or shows signs of uneven wear, replace the brake pads.
Note: If any of the pads need to be replaced, all rear brake pads must be replaced to maintain uniform braking.
3. Measure the inner diameter of the brake drum.
- Maximum internal diameter - 256.0 mm
- Nominal internal diameter - 254.0 mm
If the drum is scored or worn, the brake drum can be machined on a lathe.
4. If the contact between the brake shoe linings and the drum is not correct, repair the linings with a brake shoe repair lapping tool or replace the brake shoes.
5. If necessary, replace the brake pads.
a) Using a screwdriver, disconnect the parking brake shoe lever from the front brake shoe.
b) Install the parking brake shoe lever onto the new shoe with a new retaining ring.
The article is taken from a web resource ToyotaMAN
6. Check the wheel brake cylinder and brake shield for wear and damage.