GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Astro - 2WD 🢒 Brakes 🢒 Drum Brakes 🢒 Wheel Cylinder Overhaul

Disassembly Procedure

    Object Number: 219 Size: SH
  1. Remove the bleeder valve.

    2. Object Number: 223 Size: SH
  2. Remove the boots.

    3. Object Number: 225 Size: SH
  3. Remove the pistons.

    4. Object Number: 227 Size: SH
  4. Remove the seals.
  5. Remove the spring.
  6. Inspect the cylinder bore for scoring and corrosion.
  7. Check the spring for discoloration caused by heat.
  8. Replace parts as necessary.
  9. Clean inside the cylinder bore with crocus cloth.
  10. Clean the wheel cylinder bore with clean brake fluid.
  11. Replace the wheel cylinder if scoring remains after the cleaning.

Assembly Procedure

    Object Number: 228 Size: SH
  1. Lubricate the seals and the wheel cylinder bore with clean brake fluid.

    2. Object Number: 227 Size: SH
  2. Install the spring.
  3. Install the seals.

    4. Object Number: 225 Size: SH
  4. Install the pistons.

    5. Object Number: 223 Size: SH
  5. Install the boots.

    6. Object Number: 219 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.

  6. Install the bleeder valve.

    7. Tighten
    Tighten the bleeder valve to 7 N·m (62 lb in).