GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Corvette 🢒 Brakes 🢒 Disc Brakes 🢒 Rear Brake Caliper Overhaul

Disassembly Procedure
Object Number: 63982 Size: MH

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.
   • If any hydraulic component is removed or disconnected, it may be necessary to bleed all or part of the brake system.
   • Replace the brake pads in axle sets only.
   • The torque values specified are for dry, unlubricated fasteners.
   • Perform the service operations on a clean bench, free from all mineral oil materials.

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.

  1. Remove the brake caliper from the vehicle. Refer to Rear Brake Caliper Replacement .

    2. Object Number: 171956 Size: SH
  2. Place a thin piece wood in front of the piston to prevent damage. Remove the piston by directing compressed air into the brake hose inlet fitting port of the brake caliper housing.

    3. Object Number: 171975 Size: SH
  3. Remove the piston boot.
  4. Remove the piston seal.

    5. Object Number: 171977 Size: SH
  5. Remove the brake caliper bleed screw cap.
  6. Remove the brake caliper bleed screw.
  7. Inspect the brake caliper bore and piston seal groove for scoring and corrosion. If badly scored or corroded around the piston seal area, replace the brake caliper housing.

    8. Object Number: 171985 Size: SH
  8. Inspect the brake caliper mounting bracket guide surfaces for corrosion and wear. Remove and replace the brake caliper mounting bracket if necessary.
  9. Clean all the residue from the brake pad guiding surfaces on the brake caliper housing and the brake caliper mounting bracket.
  10. Clean all the parts not included in the repair kit with denatured alcohol.
  11. Dry all the parts with filtered unlubricated compressed air.
  12. Blow out all passages in the brake caliper housing and the brake caliper bleeder valve.

Assembly Procedure

    Object Number: 171977 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the brake caliper bleed screw.

    2. Tighten
    Tighten the brake caliper bleed screw to 12 N·m (106 lb in).

  2. Install the brake caliper bleed screw cap.

    3. Object Number: 171983 Size: SH
  3. Lubricate the new piston seal and the brake caliper bore seal groove with brake fluid.
  4. Install a new seal into the brake caliper bore seal groove.
  5. Make sure the seal is not twisted.
  6. Lubricate the brake caliper bore and the piston with brake fluid.
  7. Install the boot and piston.
    8. 7.1. Install the boot over the end of the piston so that the fold will face toward the brake caliper housing piston bore opening.
    7.2. Seat the boot into the brake caliper bore groove and slide the piston into the brake caliper bore.
    7.3. Push down the piston to the bottom of the brake caliper bore.
    7.4. Make sure the boot is properly seated into the piston groove and into the groove in the brake caliper bore.
    7.5. Repeat steps 5 and 6 for the remaining piston.
  8. Install the brake caliper to the vehicle. Refer to Rear Brake Caliper Replacement .