Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Master Cylinder Bench Bleeding

Chevrolet Sonic Repair Manual / Chassis / Brakes / General / Master Cylinder Bench Bleeding



    Warning:

    Refer to Brake Fluid Irritant Warning.

    Caution:

    Refer to Brake Fluid Effects on Paint and Electrical Components Caution.

  1. Secure the mounting flange of the brake master cylinder in a bench vice so that the rear of the primary piston is accessible.
  2. Remove the master cylinder reservoir cap and diaphragm.
  3. Install suitable fittings to the master cylinder ports that match the type of flare seat required and also provide for hose attachment.
  4. Install transparent hoses to the fittings installed to the master cylinder ports, then route the hoses into the master cylinder reservoir.
  5. Fill the master cylinder reservoir to the maximum fill level with brake fluid from a clean, sealed brake fluid container. Refer to Master Cylinder Reservoir Filling.
  6. Ensure that the ends of the transparent hoses running into the master cylinder reservoir are fully submerged in the brake fluid.
  7. Using a smooth, round-ended tool, depress and release the primary piston as far as it will travel, a depth of about 25 mm (1 in), several times. Observe the flow of fluid coming from the ports.

    As air is bled from the primary and secondary pistons, the effort required to depress the primary piston will increase and the amount of travel will decrease.

  8. Continue to depress and release the primary piston until fluid flows freely from the ports with no evidence of air bubbles.
  9. Remove the transparent hoses from the master cylinder reservoir.
  10. Install the master cylinder reservoir cap and diaphragm.
  11. Remove the fittings with the transparent hoses from the master cylinder ports. Wrap the master cylinder with a clean shop cloth to prevent brake fluid spills.
  12. Remove the master cylinder from the vice.
Brake Warning System Description and Operation
Brake Warning Indicator Brake Warning Block Diagram B80Park Brake SwitchB20Brake Fluid Level SwitchK9Body Control ModuleP16Inst ...

Master Cylinder Replacement
Removal Procedure Warning: Refer to Brake Fluid Irritant Warning. Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution. Place the ignit ...

Other materials:

Brake Drum Diameter Measurement
Warning: Refer to Brake Dust Warning. Remove brake drum. Refer to Brake Drum Replacement Clean the brake shoe lining contact surface of the brake drum (2) with denatured alcohol or an equivalent approved brake cleaner. Using a brake drum micrometer (1) calibra ...

Steel Wheel Repair Description
Caution: Do not heat wheels in an attempt to soften them for straightening or repair damage from striking curbs, etc. Do not weld wheels. The alloy used in these wheels is heat-treated and uncontrolled heating from welding affects the properties of the material. Caution: The use o ...

Throttle Body Installation
Install the throttle body (2) and a NEW throttle body seal ring (1). Caution: Refer to Fastener Caution. Install the 4 throttle body bolts (3) and tighten to  8 Y (71 lb in). ...

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