Component Tests and General Diagnostics
Park Brake Hardware InspectionWARNING: Refer to [Brake Dust Caution].
1. With the brake rotors removed, visually inspect the upper return/adjuster actuator spring and the lower return spring for the following:
^ Excessive corrosion
^ Excessive stretching
^ Broken hook ends
^ Twisting or binding
2. If any of the conditions listed were found, which could lead to improper park brake apply and/or release, the adjuster hardware and/or return springs require replacement.
3. Visually inspect the adjuster and the adjuster actuator lever for the following:
^ Misalignment with the park brake lever
^ Misalignment with the park brake shoes
^ Broken or bent adjuster actuator lever
^ Bent adjuster actuator lever pivot pin
4. If any of the conditions listed were found, which could lead to improper park brake apply and/or release, the adjuster hardware requires repair or replacement.
5. Inspect the park brake lever for the following:
^ Bent
^ Broken pivot pin
^ Seized at the pivot pin
^ Broken at park brake cable attachment
^ Improper contact with the adjuster
6. If any of the conditions listed were found, which could lead to improper park brake apply and/or release, the park brake lever requires repair or replacement.
7. Visually inspect the park brake cable for the following:
^ Improper mounting to the backing plate
^ Improper mounting at the park brake lever
^ Broken or missing cable end lug
8. If any of the conditions listed were found, which could lead to improper park brake apply and/or release, the park brake cable requires repair or replacement.
9. Apply the park brake lever/pedal three clicks.
10. Visually inspect the park brake cable for the following:
^ Unequal travel between the left and the right park brake systems
^ No travel on one or both of the park brake systems
11. If any of the conditions listed were found, which could lead to improper park brake apply and/or release, the park brake cable requires replacement and/or adjustment.
12. Release the park brake lever/pedal.
13. Visually inspect the park brake cable for the following:
^ Unequal release between the left and the right park brake systems
^ No release at one or both of the park brake systems
14. If any of the conditions listed were found, which could lead to improper park brake apply and/or release, the park brake cable requires replacement and/or adjustment.