Parking Brake Shoe Replacement Bendix 305 mm (12 in)

1. Remove the drum. Refer to Brake Drum Replacement .
2. Remove the return springs (14, 24).
3. Remove the link (16).
4. Remove the linings (17, 25).
5. Pull the linings (17, 25) outward and twist the linings in order to clear the anchor pins (13).
6. Overlap the linings (17, 25) in order to remove the adjusting screw (21) assembly.
7. Remove the adjusting screw spring (19).
8. Remove the socket (22).
9. Remove the adjusting screw (21) out of the pivot nut (20).
10. Inspect the linings (17, 25) for contamination.
11. Inspect the linings (17, 25) for excessive wear. The minimum lining thickness is 1.52 mm (0.60 in).
12. Replace the linings, if necessary.

Always replace the linings as a set.

13. Inspect the return springs and the adjusting screw spring (19). The return springs and the adjusting screw spring should not have a loss of tension or openings in the coils.
14. Replace the return springs and the adjusting screw spring (19), if necessary.
15. Inspect the shoe webs where there is contact with the camshaft (18).
16. Replace the linings if the shoe webs are severely worn.
17. Inspect the adjusting screw (21) and the pivot nut (20) for nicked or sheared threads.
18. Replace the adjusting screw (21) and the pivot nut (20), if necessary.
19. Inspect the support plate (23) for damage, distortion and corrosion.
20. Remove corrosion from the contact surfaces with a fine emery cloth.
21. Replace the support plate (23) if there is damage or distortion.

1. Apply a thin coat of GM P/N 1051344 or equivalent to the surface of the support plate (23) and the support plate guides.
2. Coat the threads and the socket end of the adjusting screw (21) sparingly with GM P/N 1051344 or the equivalent.
3. Install the adjusting screw (21) assembly in the following order:

3.1.	Thread the adjusting screw (21) all of the way into the pivot nut (20).

3.2.	Place the adjusting screw socket (22) over the end of the adjusting screw (21).

4. Install the adjusting screw (21) assembly between the adjusting ends of the brake shoes. The star wheel must be closer to the top lining (25).
5. Install the spring (14).
6. Move the anchor ends of the linings (17, 25) together in order to overlap the shoe webs.
7. Install one lining (17, 25) on the guides of the support plate (23).
8. Lubricate the anchor pins (13) where the anchor pins contact the shoe webs with GM P/N 1051344 or equivalent.
9. Twist the lining slightly in order to clear the end of the anchor pin (13) and position the lining over the pin.
10. Install the second lining (17, 25).
11. Install the link (16).
12. Install the return springs.
13. Install the drum. Refer to Brake Drum Replacement .
14. Adjust the parking brake. Refer to Park Brake Adjustment .

Parking Brake Shoe Replacement Bendix 229 mm (9 in)

1. Remove the drum (8). Refer to Brake Drum Replacement .
2. Remove the return springs (2).
3. Remove the anchor springs (5).
4. Remove the linings (1).
5. Spread the brake shoes apart.
6. Inspect the linings (1) for contamination.
7. Inspect the linings (1) for excessive wear. The minimum thickness (with bonded linings) is 1.52 mm (0.60 in).
8. Replace the linings (1) as a set, if necessary.
9. Inspect the springs for distortion.
10. Replace the springs, if necessary.
11. Inspect the cam lever (3) for grooves at the brake shoe contact points.
12. Replace the cam lever (3), if necessary.

1. Install the linings (1).
2. Place the cam lever (3) in position with the two fingers between the shoe webs.
3. Install the anchor spring (5).
4. Use GM P/N 1051344 or equivalent in order to lubricate the points where the brake shoes contact the support plate (6).
5. Install the return springs (2).
6. Install the drum Refer To Brake Drum Replacement
7. Adjust the parking brake Refer To Park Brake Adjustment