Parking Brake Shoe: Adjustments
Parking Brake Shoe Adjustment
1. NOTE: Make sure the parking brake is fully released.
Using the release handle, release the parking brake control.
2. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury Procedures.
Remove the wheel and tire.
3. NOTICE: Do not allow the brake caliper and brake pads to hang from the brake hose or damage to the hose may occur.
Remove the 2 brake caliper guide pin bolts and position the caliper and brake pads aside.
- Support the caliper using mechanic's wire.
4. NOTE: If the brake disc binds on the rear parking brake shoes, remove the adjustment hole access plug and retract the parking brake shoes using an adjusting tool.
Insert the tool at the end of the access plug slot farthest from the brake caliper. Engage the adjuster and rotate by raising the end of the tool toward the backing plate. Remove the brake disc.
5. Inspect the parking brake shoes and drum for wear, damage or oil contamination. Install new components as necessary.
- If the linings are oil contaminated, install a new rear axle oil seal.
6. Using a suitable brake adjusting gauge, measure the inside diameter of the drum portion of the rear brake disc. Record the measurement.
7. Using a suitable brake adjusting gauge, set the rear brake shoe and lining diameter to 0.5 mm (0.020 in) less than the inside diameter of the drum portion of the rear brake disc.
8. Position the brake disc onto the hub.
9. Position the brake caliper and brake pads onto the anchor plate and install the 2 brake caliper guide pin bolts.
- Tighten to 25 Nm (18 lb-ft).
10. Test the parking brake for normal operation.
11. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury Procedures.
If equipped with a fire suppression system, repower the system.