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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 187 (Disc Brakes) >> Overhaul >> Rear Brake Caliper >> Disassembly (1500 Series)

Disassembly (1500 Series)

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  1. Remove the brake caliper from the vehicle. See BRAKE CALIPERS  under REMOVAL & INSTALLATION.
  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. Remove the piston boot. Remove the piston seal. See Fig 1 . Remove the brake caliper bleed screw cap. Remove the brake caliper bleed screw.
  4. 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.
  5. Inspect the brake caliper mounting bracket guide surfaces for corrosion and wear. Remove and replace the brake caliper mounting bracket if needed. Clean all of the residue from the brake pad guiding surfaces on the brake caliper housing and the brake caliper mounting bracket.
  6. Clean all of the parts not included in the repair kit with denatured alcohol. Dry all the parts with non lubricated filtered compressed air. Blow out all passages in the brake caliper housing and the brake caliper bleeder valve.
Fig 1: Identifying Single Piston Brake Caliper Components
G00307683Courtesy of GENERAL MOTORS CORP.