Shoes, Parking Brake: Adjustments
While most vehicles require only a fine adjustment of the parking brake shoes, some vehicles may require a preliminary adjustment before a fine adjustment can be made. If a preliminary adjustment must be made, refer to PRELIMINARY ADJUSTMENT following the fine adjustment procedure listed below.
- Place parking brake lever in "full released" position.
- Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE
.
- Remove plug in parking brake shoe support to access adjuster star-wheel (1).NOTE:
Through the access hole (2), rotate the adjuster star wheel (1) in the following direction to expand the shoes outward against the drum.
- Left brake - Rotate star-wheel toward rear of vehicle.
- Right brake - Rotate star-wheel toward front of vehicle.
- Using an appropriate tool, turn adjuster star wheel (1) until wheel will not rotate (dead lock).
- Back off adjuster six detents (teeth).
- Rotate wheel, checking for light drag. If drag is too heavy, continue to back off adjuster one detent at a time until light drag is present. Do not back off star-wheel more than 17 detents from wheel lock.
- Install access plug.
- Adjust opposite wheel parking brake shoes using same method.
- Remove the support and lower the vehicle.
- Apply and release parking brake lever once to ensure proper operation of parking brakes.
