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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1688 (Disc Brakes (Except Cab & Chassis, & Hd)) >> Repair Instructions >> Rear Brake Caliper Overhaul (15 Series) >> Disassembly Procedure

Disassembly Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra and 2002 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Replace all the components included in the repair kits used to service this brake caliper
  • Lubricate the rubber parts with clean brake fluid to make assembly easier
  • The torque values specified are for dry, non lubricated fasteners
  • Perform the service operations on a clean bench free from all mineral oil materials
Fig 1: Exploded View Of Rear Brake Caliper
GM369869
  1. Remove the brake caliper from the vehicle. Refer to Rear Brake Caliper Replacement (1500 Series)  or Rear Brake Caliper Replacement (2500/3500 Series) 
    CAUTION: Do not place your fingers in front of the piston in order to catch or protect the piston while applying compressed air. This could result in serious injury.
  2. Place a thin piece wood in front of the piston in order to prevent damage. Remove the piston by directing compressed air into the brake hose inlet fitting port of the brake caliper housing.
    3. Fig 2: Exploded View Of Brake Caliper Components
    GM369670
  3. Remove the piston boot
  4. Remove the piston seal
  5. Remove the brake caliper bleed screw cap
  6. Remove the brake caliper bleed screw
  7. Inspect the brake caliper bore and the piston seal groove for scoring and corrosion. If you find excessive scoring or corrosion around the piston seal area, replace the brake caliper housing
    8. Fig 3: Disc Brake Pads & Caliper Mounting Bracket - Rear
    GM369864
  8. Inspect the brake caliper mounting bracket guide surfaces for corrosion and wear. Remove and replace the brake caliper mounting bracket if needed
  9. Clean all of the residue from the brake pad guiding surfaces on the brake caliper housing and the brake caliper mounting bracket
  10. Clean all of the parts not included in the repair kit with denatured alcohol
  11. Dry all the parts with non lubricated filtered compressed air
  12. Blow out all passages in the brake caliper housing and the brake caliper bleeder valve
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