Chrysler Full-Size Trucks 1967-1988 Repair Guide

Brake Shoes

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CAUTION
Brake shoes contain asbestos, which has been determined to be a cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.

REMOVAL & INSTALLATION



Servo Type With Single Anchor

See Figures 1 through 15

  1. Raise and support the vehicle.
  2.  



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Fig. Fig. 1: Always leave the brakes on one side of the assembled as a reference, just remember it is a mirror image of the opposite side

  1. Remove the rear wheel, drum retaining clips and the brake drum.
  2.  



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Fig. Fig. 2: Locations of springs, clips and assorted drum brake components

  1. Remove the brake shoe return springs, noting how the secondary spring overlaps the primary spring.
  2.  



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Fig. Fig. 3: Removing your return springs



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Fig. Fig. 4: Check the springs for excessive rust or brittleness

  1. Remove the brake shoe retainer, springs and pins.
  2.  



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Fig. Fig. 5: Using brake tools will save time and knuckles, but still be careful around springs



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Fig. Fig. 6: Remove the spring, retainer and pin, but make sure you do not loose them

  1. Disconnect the automatic adjuster cable from the anchor and unhook it from the lever. Remove the cable, cable guide, and anchor plate.
  2.  



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Fig. Fig. 7: Remove the cable, guide ...



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Fig. Fig. 8: ... automatic adjuster lever ...



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Fig. Fig. 9: ... and anchor plate

  1. Remove the spring and lever from the shoe web.
  2.  
  3. Spread the anchor ends of the primary and secondary shoes and remove the parking brake spring and strut.
  4.  
  5. Disconnect the parking brake cable and remove the brake assembly.
  6.  
  7. Remove the primary and secondary brake shoe assemblies and the star adjuster as an assembly. Block the wheel cylinders to retain the pistons.
  8.  



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Fig. Fig. 10: Remove the shoes as an assembly with the star adjuster connected



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Fig. Fig. 11: Exploded view of the drum brake components

  1. Measure the drum as described under "Front Brakes''.
  2.  
  3. Apply a thin coat of lubricant to the support platforms.
  4.  



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Fig. Fig. 12: Pad/backing plate lubricant is usually not supplied with the shoes, be sure to buy some before starting the job

To install:
  1. Attach the parking brake lever to the back side of the secondary shoe.
  2.  
  3. Place the primary and secondary shoes in their relative positions on a workbench.
  4.  
  5. Lubricate the adjuster screw threads. Install it between the primary and secondary shoes with the star wheel next to the secondary shoe. The star wheels are stamped with an L (left) and R (right).
  6.  



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Fig. Fig. 13: Star adjusters are stamped with an L and R for replacement



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Fig. Fig. 14: Exploded view of a star adjuster assembly

  1. Overlap the ends of the primary and second brake shoes and install the adjusting spring and lever at the anchor end.
  2.  
  3. Hold the shoes in position and install the parking brake cable into the lever.
  4.  
  5. Install the parking brake strut and spring between the parking brake lever and primary shoe.
  6.  
  7. Place the brake shoes on the support and install the retainer pins and springs.
  8.  
  9. Install the anchor pin plate.
  10.  
  11. Install the eye of the adjusting cable over the anchor pin and install the return spring between the anchor pin and primary shoe.
  12.  



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Fig. Fig. 15: The adjuster cable eye is easily installed

  1. Install the cable guide in the secondary shoe and install the secondary return spring. Be sure that the primary spring overlaps the secondary spring.
  2.  
  3. Position the adjusting cable in the groove of the cable guide and engage the hook of the cable in the adjusting lever.
  4.  
  5. Install the brake drum and retaining clips. Install the wheel and tire.
  6.  
  7. Adjust the brakes and road test the truck.
  8.  

Bendix Duo-Servo

See Figures 16 through 23

  1. Unhook and remove the adjusting lever return spring.
  2.  



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Fig. Fig. 16: Exploded view of rear Bendix brakes

  1. Remove the lever from the lever pivot pin.
  2.  
  3. Unhook the adjuster lever from the adjuster cable.
  4.  
  5. Unhook the upper shoe-to-shoe spring.
  6.  



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Fig. Fig. 17: Shoe spring removal using special brake tools

  1. Unhook and remove the shoe hold-down springs.
  2.  



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Fig. Fig. 18: Remove the hold-down springs



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Fig. Fig. 19: Bendix coil spring/hold-down spring attachment



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Fig. Fig. 20: Releasing the automatic adjuster

  1. Disconnect the parking brake cable from the parking brake lever.
  2.  
  3. Remove the shoes with the lower shoe-to-shoe spring and star wheel as an assembly.
  4.  



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Fig. Fig. 21: On Bendix brakes remove the rear shoes as an assembly

To install:
  1. The pivot screw and adjusting nut on the left side have left-hand threads and right hand threads on the right side.
  2.  
  3. Lubricate and assemble the star wheel assembly. Lubricate the guide pads on the support plates.
  4.  
  5. Assemble the star wheel, lower shoe-to-shoe spring, and the primary and secondary shoes. Position this assembly on the support plate.
  6.  



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Fig. Fig. 22: Backing plate and guide pads

  1. Install and hook the hold-down springs.
  2.  
  3. Install the upper shoe-to-shoe spring.
  4.  
  5. Install the cable and retaining clip.
  6.  
  7. Position the adjuster lever return spring on the pivot (green springs on left brakes and red springs on right brakes).
  8.  
  9. Install the adjuster lever. Route the adjuster cable and connect it to the adjuster.
  10.  



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Fig. Fig. 23: Rear Bendix brakes assembled

  1. Install the brake drum and adjust the brakes.
  2.  

 
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