Park Avenue V6-3.8L SC VIN 1 (2005)
6. Remove the piston dust boot seal from the piston and discard the boot seal.
7. Using a small wooden or plastic tool, remove the piston seal from the caliper bore and discard the piston seal.
8. Remove the bleeder valve from the caliper body.
9. Using a flat bladed tool, carefully reposition the park brake actuator lever return spring from the park brake actuator lever to relieve tension on the
lever.
10. Inspect the operation of the integral park brake mechanism; rotate the park brake lever back and forth while observing the movement of the park
brake mechanism actuator assembly in the caliper bore.
Important: The park brake lever, lever return spring and actuator shaft seal are the only components of the integral park brake mechanism that can be
removed or replaced. Do not disassemble the integral park brake mechanism.
11. If the integral park brake mechanism was not operating properly binding or seized, replace the brake caliper assembly.
Important: Do not use abrasives to clean the brake caliper piston.
12. Clean the brake caliper piston bore and seal counterbore, the caliper piston, and the caliper sleeves with denatured alcohol, or equivalent.
13. Dry the caliper piston bore and counterbore, the piston, and the sleeves with non-lubricated, filtered air.
14. Inspect the caliper bore for cracks, scoring, pitting, excessive rust, and/or excessive corrosion.
15. If light rust or light corrosion are present in the caliper bore, attempt to remove the imperfection with a fine emery paper. If the imperfection
cannot be removed, replace the caliper assembly.
16. If cracks, scoring, pitting, excessive rust, and/or excessive corrosion are present in the caliper bore, replace the caliper assembly.
17. Inspect the caliper piston for cracks, scoring, damage to the chrome plating, and/or damage to the integral adjusting mechanism. Replace the
caliper piston if any of these conditions exist.
18. Inspect the caliper sleeves for cracks, scoring, pitting, rust, and/or corrosion. Replace the sleeves if any of these conditions exist.
19. Inspect the caliper sleeve dust boots for cracks, cuts, tears, or deterioration. Replace the boots if any of these conditions exist.
20. Inspect the caliper mounting holes for cracks, scoring, pitting, rust, and/or excessive corrosion. Replace the caliper assembly if any of these
conditions exist.
21. Remove the park brake lever return spring from the park brake lever.
22. Remove the nut retaining the park brake lever to the park brake actuator shaft.
23. Remove the park brake lever from the actuator shaft.
