Chevrolet Sonic Repair Manual: Hydraulic Brake System Description and Operation
- System Component Description
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The hydraulic brake system consists of the following:
- Hydraulic Brake Master Cylinder Reservoir
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Contains a supply of brake fluid for the hydraulic brake system.
- Hydraulic Brake Master Cylinder
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Converts mechanical input force into hydraulic output pressure.
Hydraulic output pressure is distributed from the master cylinder through two hydraulic circuits, supplying diagonally-opposed wheel apply circuits.
- Hydraulic Brake Pressure Balance Control System
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Regulates brake fluid pressure delivered to hydraulic brake wheel circuits, in order to control the distribution of braking force. Pressure balance control on non-ABS equipped vehicles, is achieved through a proportioning valve assembly. Pressure balance control on ABS equipped vehicles, is achieved through electronic brake distribution (EBD), which is a function of the ABS modulator.
- Hydraulic Brake Pipes and Flexible Brake Hoses
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Carries brake fluid to and from hydraulic brake system components.
- Hydraulic Brake Wheel Apply Components
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Converts hydraulic input pressure into mechanical output force.
- System Operation
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Mechanical force is converted into hydraulic pressure by the master cylinder, regulated to meet braking system demands by the pressure balance control system, and delivered to the hydraulic brake wheel circuits by the pipes and flexible hoses. The wheel apply components then convert the hydraulic pressure back into mechanical force which presses brake linings against rotating brake system components.
Hydraulic Brake System Bleeding (Pressure)
Special Tools
CH-29532 Diaphragm Type Brake Pressure Bleeder
CH-35589-A Brake Pressure Bleeder Adapter
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid ...
Hydraulic Brake System Flushing
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid Effects on Paint and Electrical Components
Caution.
Inspect the brake fluid for the following conditio ...
Other materials:
Air Vents
Use the air vents located in the center and on the side of the instrument panel
to direct the airflow. Move the slats on the center air vents to direct airflow.
Turn the knobs on the side air vents counterclockwise or clockwise to open or
close off the airflow.
Operation Tips
Clear away an ...
Towing the Vehicle
Notice: Incorrectly towing a disabled vehicle may cause damage. The
damage would not be covered by the vehicle warranty. Do not lash or hook to
the chassis components including the front and rear subframes, suspension control
arms and links during towing and recovery of a disabled vehicl ...
Front Floor Console Extension Replacement - Right Side
Front Floor Console Extension Replacement - Right Side
Callout
Component Name
1
Front Floor Console Extension
Procedure
Use a flat bladed plastic trim tool in order to release the retainers
securing the extens ...
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