Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Rear Brake Cylinder Overhaul

Chevrolet Sonic Repair Manual / Chassis / Brakes / Drum Brakes / Rear Brake Cylinder Overhaul

Disassembly Procedure

    Warning:

    Refer to Brake Dust Warning.

    Warning:

    Refer to Brake Fluid Irritant Warning.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the rear brake cylinder. Refer to Rear Brake Cylinder Replacement.


  3. Remove and discard the brake cylinder dust seals (1).

  4. Remove the brake cylinder pistons (1) and spring (2).
  5. Remove and discard the brake cylinder piston seals.
  6. Inspect the brake cylinder bore for excessive corrosion, scoring, nicks, and pitting.
  7. If the brake cylinder bore exhibits the above conditions, the brake cylinder assembly requires replacement.
  8. Remove light corrosion in the cylinder bore with a fine crocus cloth.
  9. Thoroughly clean the brake cylinder and pistons with denatured alcohol and dry with filtered, non-lubricated compressed air.
Assembly Procedure
  1. Lightly lubricate the new piston seals and brake cylinder bore with GM approved brake fluid from a clean, sealed, brake fluid container.
  2. Assemble the new piston seals with the lip of the seals facing inward to the brake cylinder pistons.

  3. Install the brake cylinder pistons (1) and spring (2) into the brake cylinder bore.

  4. Note:

    Do not lubricate the brake cylinder dust seals.

  5. Install the new brake cylinder dust seals (1).
  6. Install the rear brake cylinder. Refer to Rear Brake Cylinder Replacement.
  7. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding.
Rear Brake Backing Plate Replacement
Removal Procedure Warning: Refer to Brake Dust Warning. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the tire and wheel assembly. Refer ...

Rear Brake Cylinder Replacement
Removal Procedure Warning: Refer to Brake Dust Warning. Warning: Refer to Brake Fluid Irritant Warning. Raise and support the vehicle. Refer to Lifting and Jacki ...

Other materials:

Parking Brake Adjustment (Disc Brake)
Note: The park brake cable adjusting nut is a nylon lock type. Use ONLY HAND TOOLS whenever tightening or loosening the adjusting nut. Apply and fully release the park brake several times. Verify that the park brake lever releases completely. Turn ON the ignition. Verify the red B ...

Wheel Drive Shaft Outer Joint Inspection
Disassembly Procedure Remove the outer constant velocity (CV) joint and boot from the wheel drive shaft. Refer to Front Wheel Drive Shaft Outer Joint and Boot Replacement. Remove any lubricant from the CV joint. Note: Position the cage and the inner race so they a ...

Control Solenoid Valve and Transmission Control Module Assembly Replacement
Removal Procedure Remove the transmission control valve body cover. Refer to Control Valve Body Cover Replacement. Disconnect the output speed sensor electrical connector (2). Disconnect the shift position switch electrical connector (3). Disconn ...

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