GM Storm/Spectrum 1985-1993 Repair Guide

Brake Caliper

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REMOVAL & INSTALLATION



  1. Raise and support the vehicle safely. Remove the front wheels.
  2.  
  3. Disconnect the brake hose and 2 gaskets from the brake caliper. Plug the end of the hose to prevent loss of brake fluid.
  4.  
  5. Remove the 2 slide pin bolts that attach the brake caliper to the bracket.
  6.  
  7. Lift up and remove the brake caliper assembly.
  8.  
  9. Installation is the reverse of the removal procedure. Always use NEW gaskets for the brake hose. Lightly grease the brake caliper bushings and slide pin bolts with Lithium grease or equivalent. Install and tighten the caliper slide pin bolts EVENLY to 36 ft. lbs.
  10.  
  11. Fill and bleed the system. Before moving the vehicle, make sure to pump the brake pedal a few times to seat the pads against the rotors.
  12.  

OVERHAUL



  1. Remove the brake caliper from the bracket. Remove the brake pads.
  2.  
  3. Withdraw the 2 slide bushings from their respective bores.
  4.  
  5. Remove the piston boot.
  6.  
  7. Place a folded towel or equivalent between the piston and housing. Apply compressed air to the brake line union fitting to force the piston out of its bore. Be careful, the piston will come out forcefully.
  8.  


CAUTION
Do not attempt to catch the piston with your fingers. Let the towel or equivalent do this for you.

  1. Pry the piston seal from the bore with a machinists scribe.
  2.  
  3. Clean all necessary components. Check the piston and cylinder bore for wear and/or corrosion. Replace components if excess wear or corrosion is present.
  4.  

To assemble:
  1. Coat all necessary rubber parts with clean brake fluid.
  2.  
  3. Install the piston seal into the bore and install the piston.
  4.  
  5. Install the piston boot.
  6.  
  7. Install sliding bushings to the brake caliper.
  8.  
  9. Install the brake pads and brake caliper to the bracket. Install and tighten the caliper slide pin bolts EVENLY to 36 ft. lbs.
  10.  
  11. Fill the master cylinder reservoir and bleed the brake system.
  12.  
  13. Pump the brake pedal a few times, and check the brake system for leaks.
  14.  

 
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