GM Cadillac 1967-1989 Repair Guide

Brake Shoes

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REMOVAL & INSTALLATION



See Figures 1 through 18

  1. Raise the car and support it on jackstands.
  2.  
  3. Slacken the parking brake cable.
  4.  
  5. Remove the rear wheel and brake drum. The front wheel and drum may be removed as a unit by removing the spindle nut and cotter pin.
  6.  
  7. Free the brake shoe return springs, actuator pull-back spring, hold-down pins and springs, along with the actuator assembly.
  8.  

Special tools available from auto supply stores will ease removal of the spring and anchor pin, but the job may still be done with common hand tools.

  1. On the rear wheels, disconnect the adjusting mechanism and spring, then remove the primary shoe. The primary shoe has a shorter lining than the secondary and is mounted at the front of the wheel.
  2.  
  3. Disconnect the parking brake lever from the secondary shoe and remove the shoe. Front wheel shoes may be removed together.
  4.  

To install:
  1. Clean and inspect all brake parts.
  2.  
  3. Check the wheel cylinders for seal condition and leaking.
  4.  
  5. Repack wheel bearings and replace the seals.
  6.  
  7. Inspect the replacement shoes for nicks or burrs, lubricate the backing plate contact points, brake cable and levers, and adjusting screws and then assemble.
  8.  
  9. Make sure that the right and left-hand adjusting screws are not mixed. You can prevent this by working on one side at a time. This will also provide you with a reference for reassembly. The star wheel should be nearest to the secondary shoe when correctly installed.
  10.  
  11. Reverse all removal procedures. When completed, make an initial adjustment as previously described.
  12.  

Maintenance procedures for the metallic lining option are the same as those for standard linings. Do not substitute these linings in standard drums, unless they have been honed to a 20 micro-inch finish and equipped with special heat-resistant springs.



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Fig. Fig. 1: Exploded view of a common drum brake



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Fig. Fig. 2: View of a common brake drum



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Fig. Fig. 3: Removing the brake drum



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Fig. Fig. 4: View of a drum brake system



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Fig. Fig. 5: Cleaning the brake shoes before removal



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Fig. Fig. 6: Removing the brake return right spring with special brake tool



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Fig. Fig. 7: Removing the brake return spring



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Fig. Fig. 8: Removing the brake return left spring with special brake tool



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Fig. Fig. 9: Removing the brake self-adjuster actuating link



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Fig. Fig. 10: Removing the brake shoe guide



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Fig. Fig. 11: Removing the brake self-adjuster return spring



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Fig. Fig. 12: Removing the brake self-adjuster lever



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Fig. Fig. 13: Removing the brake hold-down spring



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Fig. Fig. 14: Removing the brake hold-down spring and cup



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Fig. Fig. 15: Removing the brake shoes



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Fig. Fig. 16: Removing the parking brake strut



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Fig. Fig. 17: Removing the parking brake strut for spring



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Fig. Fig. 18: View of the brake shoes, brake springs and hardware

 
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