GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Sunfire 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Wheel Cylinder Replacement

Removal Procedure

    Object Number: 492721 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Caution: Avoid taking the following actions when you service wheel brake parts:

       • Do not grind brake linings.
       • Do not sand brake linings.
       • Do not clean wheel brake parts with a dry brush or with compressed air.
    Some models or aftermarket brake parts may contain asbestos fibers which can become airborne in dust. Breathing dust with asbestos fibers may cause serious bodily harm. Use a water-dampened cloth in order to remove any dust on brake parts. Equipment is available commercially in order to perform this washing function. These wet methods prevent fibers from becoming airborne.

  2. Clean any dirt or foreign material around the wheel cylinder assembly inlet and pilot.
  3. Remove the brake pipe (2) from the wheel cylinder (1). Plug the opening in the brake pipe to prevent fluid loss and contamination.

    4. Object Number: 171475 Size: SH
  4. Remove the brake drum. Refer to Brake Drum Replacement .
  5. Remove the brake shoes (17, 29). Refer to Brake Shoe Replacement .
  6. Remove the hub and bearing assembly. Refer to Rear Wheel Bearing and Hub Replacement in Rear Suspension.
  7. Pull the backing plate (11) away from the axle flange. Do not let the backing plate hang from the parking brake cable as damage may occur.
  8. Remove the wheel cylinder bolts (8).
  9. Remove the wheel cylinder (14).

Installation Procedure

    Object Number: 171475 Size: SH
  1. Install the wheel cylinder (14).

    2. 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.

  2. Install the wheel cylinder bolts (8).

    3. Tighten
    Tighten the wheel cylinder bolts to 20 N·m (15 lb ft).

  3. Install the backing plate (11) to the axle flange.
  4. Install the hub and bearing assembly. Refer to Rear Wheel Bearing and Hub Replacement in Rear Suspension.
  5. Install the brake shoes 17, 29). Refer to Brake Shoe Replacement .
  6. Install the brake drum. Refer to Brake Drum Replacement .

    7. Object Number: 492721 Size: SH
  7. Install the brake pipe (2) to the wheel cylinder (1).

    8. Tighten
    Tighten the brake pipe nut to 23 N·m (17 lb ft).

  8. Bleed the wheel cylinder and then the complete brake system. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.