Parking Brake System: Adjustments

Park Brake Adjustment (Disc Brake)

^ Tools Required
- J 21177-A Drum-to-Brake Shoe Clearance Gauge





1. Apply and fully release the parking brake 6 times.
2. Verify that the parking brake pedal releases completely.
^ Turn ON the ignition. Verify that the BRAKE indicator lamp is off.
^ If the BRAKE indicator lamp is on, ensure the parking brake pedal is in release mode and fully returned to stop. Remove the slack in the front parking brake cable by pulling downward on the cable.
3. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
4. Remove the rear wheels and tires.
5. Remove both rear caliper brackets.
6. Relieve tension on the park brake system at the park brake equalizer.
7. Remove both rear brake rotors.





8. Set the J21177-A inside of the park brake drum (1) at the widest point.
^ Place the contacts on the tool to the widest point of the drum (1).
^ Tighten the set screw on the tool to ensure the proper measurement when removing the tool from the drum (1).





9. Position the J 21177-A over the park brake shoe (1) at the widest point.
10. Turn the adjuster on the actuator until the park brake shoe (1) just contacts the J 21177-A.
11. Repeat steps 8-10 for the opposite side.
12. Install both rear brake rotors.
13. Install both rear caliper brackets.
14. Install the rear wheels and tires.





15. Adjust the parking brake by turning the nut at the equalizer (2) while spinning both rear wheels. When either rear wheel starts to drag, back off the nut one full turn.
16. Lower the vehicle to curb height.
17. Apply the parking brake, then inspect for rotation of the rear wheels. If the rear wheels rotate during this inspection, readjust the parking brake shoes.
18. Release the parking brake. Verify that the wheels rotate freely.
19. Lower the vehicle.