GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 Optra - Mexico 🢒 General Information 🢒 General Information 🢒 Wheel Cylinder Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the brake drum and the brake shoes. Refer to Brake Shoe Replacement .

    3. Object Number: 1245734 Size: SH
  3. Clean dirt and foreign material from around the wheel cylinder brake line inlet, the pilot, and the bolt.
  4. Remove the brake line from the backing plate.
  5. Plug the opening in the brake line to prevent fluid loss or contamination.

    6. Object Number: 1245735 Size: SH
  6. Remove the wheel cylinder-to-backing plate bolt.
  7. Gently tap out the wheel cylinder from the backing plate, using care not to damage the bleeder valve or the cap.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1245738 Size: SH
  1. Install the wheel cylinder to the backing plate. Install the wheel cylinder bolt.

    2. Tighten
    Tighten the bolt to 8 N·m (71 lb in).


    Object Number: 1245734 Size: SH
  2. Install the brake line to the backing plate.

    3. Tighten
    Tighten the brake line to 16 N·m (12 lb ft).

  3. Install the brake drum and the brake shoes. Refer to Brake Shoe Replacement .
  4. Bleed the brakes. Refer to Hydraulic Brake System Bleeding .
  5. Lower the vehicle.