Toyota Celica/Supra 1971-1985 Repair Guide

Brake Drums

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REMOVAL & INSTALLATION



See Figures 1 and 2



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Fig. Fig. 1: Exploded view of the rear drum brake assemblies



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Fig. Fig. 2: Backing off the brake shoes to remove the brake drum

  1. Remove the hub cap (if used) and loosen the lug nuts. Release the parking brake.
  2.  
  3. Block the front wheels, raise the rear of the car, and support it with jackstands.
  4.  


CAUTION
Be sure that the car is securely supported.

  1. Remove the lug nuts and the wheel.
  2.  
  3. Unfasten the brake drum retaining screws.
  4.  
  5. Tap the drum lightly with a mallet in order to free it. If the drum cannot be removed easily, insert a screwdriver into the hole in the backing plate and hold the automatic adjusting lever away from the adjusting bolt. Using another screwdriver, relieve the brake shoe tension by turning the adjusting bolt clockwise. If the drum still will not come off, use a puller; but first make sure that the parking brake is released.
  6.  


WARNING
Do not depress the brake pedal once the brake drum has been removed.

  1. Inspect the brake drum as detailed in the following section.
  2.  
  3. Installation is in the reverse order of removal.
  4.  

INSPECTION



See Figures 3, 4, 5 and 6



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Fig. Fig. 3: Measure the inside diameter of the brake drum with an H-gauge (caliper)



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Fig. Fig. 4: Measure the shoe lining thickness with a ruler



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Fig. Fig. 5: Inspect the brake lining and drum for proper contact



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Fig. Fig. 6: Measure the clearance between the brake shoe and the parking brake lever

  1. Clean the drum.
  2.  
  3. Inspect the drum for scoring, cracks, grooves and out-of-roundness. Replace the drum or have it turned at a machine or brake specialist shop, as required.
  4.  
  5. Light scoring may be removed by dressing the drum with fine emery cloth.
  6.  
  7. Heavy scoring will require the use of a brake drum lathe to turn the drum.
  8.  

 
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