Chevrolet Sonic Repair Manual: Rear Brake Cylinder Overhaul
- Disassembly Procedure
-
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
- Remove the rear brake cylinder. Refer to Rear Brake Cylinder Replacement.
- Remove and discard the brake cylinder dust seals (1).
- Remove the brake cylinder pistons (1) and spring (2).
- Remove and discard the brake cylinder piston seals.
- Inspect the brake cylinder bore for excessive corrosion, scoring, nicks, and pitting.
- If the brake cylinder bore exhibits the above conditions, the brake cylinder assembly requires replacement.
- Remove light corrosion in the cylinder bore with a fine crocus cloth.
- Thoroughly clean the brake cylinder and pistons with denatured alcohol and dry with filtered, non-lubricated compressed air.
Warning:
Refer to Brake Dust Warning.
Warning:
Refer to Brake Fluid Irritant Warning.
- Assembly Procedure
-
- Lightly lubricate the new piston seals and brake cylinder bore with GM approved brake fluid from a clean, sealed, brake fluid container.
- Assemble the new piston seals with the lip of the seals facing inward to the brake cylinder pistons.
- Install the brake cylinder pistons (1) and spring (2) into the brake cylinder bore.
- Install the new brake cylinder dust seals (1).
- Install the rear brake cylinder. Refer to Rear Brake Cylinder Replacement.
- Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding.
Note:
Do not lubricate the brake cylinder dust seals.
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:
Front Side Door Lock Cylinder Coding (Free Wheeling)
Special Tools
BO-49753 Assembly Tool
The door lock cylinder uses 8 of the 8?€‰cut positions. The tumbler positions
are staggered from side to side, 4 on one side and 4 on the other, are not self-retaining,
and are not snap in.
Note: All lock cylinders for side milled keys ha ...
Air Inlet Assembly Replacement
Air Inlet Assembly Replacement
Callout
Component Name
Preliminary Procedures
Remove the Heater and Air Conditioning Evaporator and Blower Module.
Refer to Heater and Air Conditioning Evaporator and Blower Module Removal
a ...
Battery Description and Operation
Warning: Batteries produce explosive gases, contain corrosive acid,
and supply levels of electrical current high enough to cause burns. Therefore,
to reduce the risk of personal injury when working near a battery:
Always shield your eyes and avoid leaning over the battery whenever
...
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