Chrysler Full-Size Vans 1967-1988 Repair Guide

Brake Drum

Print

REMOVAL & INSTALLATION



Servo Type With Single Anchor

See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the single anchor servo type brake system used on 1967-70 models

  1. To aid in brake drum removal, loosen the brake adjusting star wheel.
  2.  
  3. Jack and support the vehicle.
  4.  
  5. Insert a thin screwdriver into the adjusting hole after removing the plug. Push the adjusting lever away from the adjuster.
  6.  
  7. Release the brake adjustment by prying down against the star wheel with a brake adjusting spoon.
  8.  
  9. Remove the grease cap, cotter pin, lock, adjusting nut, and outer wheel bearing; remove the wheel and drum bearing; remove the wheel and drum assembly from the spindle or remove the wheel and then the drum.
  10.  
  11. Installation is the reverse of removal. Adjust the wheel bearings and readjust the brakes.
  12.  

Bendix Duo-Servo Type

See Figure 2

Click image to see an enlarged view

Fig. Fig. 2: Assembled view of the Bendix Duo-Servo front drum brakes used on 1970 and some later models

  1. Raise and support the van on jackstands.
  2.  
  3. Remove the wheel and tire.
  4.  
  5. Remove the dust cover, cotter key, nut, locknut, washer, and outer bearing.
  6.  
  7. Carefully remove the drum.
  8.  
  9. If there is interference between the brake shoes and drum, release the brake shoes by applying a brake adjusting spoon to the star wheel adjuster.
  10.  
  11. Installation is the reverse of removal. Adjust the wheel bearings and then the brakes.
  12.  

INSPECTION



  1. Drum run out (out of round) and diameter should be measured. Each drum should be marked with its diameter. Drum diameter cannot exceed specification by more than 0.020" and run out cannot exceed 0.006 in. Do not reface a drum more than 0.060" over its standard diameter.
  2.  
  3. Check the drum for large cracks and scores. Replace the drum if necessary.
  4.  
  5. If the brake linings are wearing more on one edge than the other, then the drum may be "bell" shaped and will have to be replaced and resurfaced.
  6.  

 
label.common.footer.alt.autozoneLogo