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Home >> GMC >> 2003 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes & Drum Brakes >> Overhaul >> Brake Caliper - Front Single Piston >> Disassembly

Brake Caliper - Front Single Piston: Disassembly

  1. Drain all of the brake fluid from the caliper.
  2. Install a piece of wood or shop towels between the caliper and the piston.
  3. Cover the brake caliper with a shop rag.
  4. Apply only enough compressed air to the brake caliper to remove the piston.
  5. Remove the shop rag cover from the brake caliper.
  6. Remove the piece of wood or shop towels from the brake caliper.
  7. Remove the boot from the front brake caliper.
  8. Remove the front brake caliper piston seal.
  9. Remove the bleeder valve from the brake caliper body.
  10. Clean the following items with denatured alcohol. The bleeder valve. The brake caliper body bore. The brake caliper piston.
  11. Using a crocus cloth, clean the corrosion from the brake caliper bore.
  12. Dry the parts using non-lubricated, filtered compressed air.
  13. Replace the brake caliper or the piston if any of the following conditions exist:
    • Scoring on the piston surface or in the caliper bore.
    • Corrosion on the piston.
    • Chrome plating damage on the piston.
    • Pitting in the caliper bore.
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