GM Full-Size Trucks 1980-1987 Repair Guide

Parking Brake Cables

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REMOVAL & INSTALLATION



See Figures 1 and 2

Front Cable
  1. Raise vehicle on hoist.
  2.  
  3. Remove adjusting nut from equalizer.
  4.  



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Fig. Fig. 1: A pair of pliers may be used to free the front parking brake cable from the actuator pedal



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Fig. Fig. 2: Adjusting the parking brake equalizer

  1. Remove retainer clip from rear portion of front cable at frame and from lever arm.
  2.  
  3. Disconnect front brake cable from parking brake pedal or lever assemblies. Remove front brake cable. On some models, it may assist installation of new cable if a heavy cord is tied to other end of cable in order to guide new cable through proper routing.
  4.  
  5. Install cable by reversing removal procedure.
  6.  
  7. Adjust parking brake.
  8.  

Center Cable
  1. Raise vehicle on hoist.
  2.  
  3. Remove adjusting nut from equalizer.
  4.  
  5. Unhook connector at each end and disengage hooks and guides.
  6.  
  7. Install new cable by reversing removal procedure.
  8.  
  9. Adjust parking brake.
  10.  
  11. Apply parking brake 3 times with heavy pressure and repeat adjustment.
  12.  

Rear Cable
  1. Raise vehicle on hoist.
  2.  
  3. Remove rear wheel and brake drum.
  4.  
  5. Loosen adjusting nut at equalizer.
  6.  
  7. Disengage rear cable at connector.
  8.  
  9. Bend retainer fingers.
  10.  
  11. Disengage cable at brake shoe operating lever.
  12.  
  13. Install new cable by reversing removal procedure.
  14.  
  15. Adjust parking brake.
  16.  

ADJUSTMENT



The rear brakes serve a dual purpose. They are used as service brakes and as parking brakes. To obtain proper adjustment of the parking brake, the service brakes must first be properly adjusted as outlined earlier.

  1. Apply the parking brake 4 notches from the fully released position.
  2.  
  3. Raise and support the vehicle.
  4.  
  5. Loosen the jam nut at the equalizer.
  6.  
  7. Tighten or loosen the adjusting nut until a light drag is felt when the rear wheels are rotated forward.
  8.  
  9. Tighten the check nut.
  10.  
  11. Release the parking brake and rotate the rear wheels. No drag should be felt. If even a light drag is felt, readjust the parking brake.
  12.  
  13. Lower the vehicle.
  14.  

If a new parking brake cable is being installed, pre-stretch it by applying the parking brake hard about three times before making adjustments.

See Figure 3

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Fig. Fig. 3: Brake Specifications

 
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