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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 - Rear >> Disassembly

Brake Caliper - Rear: Disassembly

  1. Drain all the brake fluid from the caliper.
  2. Pad the interior of the caliper with clean shop towels.
  3. Remove the piston from the caliper bore.
  4. Remove the boot from the caliper bore. Do not scratch the housing bore.
  5. Remove the piston seal from the caliper bore. Do not use a metal tool.
  6. Remove the bleeder valve and bleeder valve cap from the caliper body.
  7. Remove the guide pins and guide pin sleeves from the anchor bracket.
  8. Clean the following components with denatured alcohol:
    • The bleeder valve.
    • The caliper bore.
    • The caliper passages.
    • The piston.
    • The lining contact area on the anchor bracket.
  9. Dry the parts and blow out the brake fluid passages. Use dry and filtered compressed air.
  10. Replace the piston or the caliper 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.
    • Corrosion in the caliper bore. Use crocus cloth in order to polish light corrosion from the caliper bore. Replace the caliper if the corrosion cannot be removed.
    • Pitting in the caliper bore
  11. Replace the bleeder valve cap. Tighten the bleeder valve to specification. See TORQUE SPECIFICATIONS .
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