Chevrolet Sonic Repair Manual: Rear Brake Cylinder Replacement

Removal 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 tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.
3. Remove the brake drum. Refer to Brake Drum Replacement.
4. Remove the drum brake adjusting hardware. Refer to Drum Brake Adjusting Hardware Replacement.
5. Clean the area surrounding the wheel cylinder of dirt and debris.


6. Remove the rear brake cylinder bleeder valve bolt (1) and cap (2).


7. Disconnect the brake pipe fitting (1).

   Cap the brake pipe fitting to prevent brake fluid loss and contamination.



8. Remove the rear brake cylinder bolts (1).


9. Spread the top of the brake shoes slightly and remove the rear brake cylinder (1).

Installation Procedure

1. Spread the top of the brake shoes slightly and install the rear brake cylinder (1).



Caution:

Refer to Fastener Caution.

2. Install the rear brake cylinder bolts (1) and tighten to 10 Y (89 lb in)

   .




3. Connect the brake pipe fitting (1) and tighten to 18 Y (13 lb ft)

   .




4. Install the rear brake cylinder bleeder valve bolt (1) and tighten to 9 Y (80 lb in)

   .

5. Install the rear brake cylinder bleeder valve bolt cap (2).
6. Install the drum brake adjusting hardware. Refer to Drum Brake Adjusting Hardware Replacement.
7. Adjust the drum brakes. Refer to Drum Brake Adjustment.
8. Install the brake drum. Refer to Brake Drum Replacement.
9. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.
10. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding.