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:
Infotainment
Determine which radio the vehicle has and read the following pages to become
familiar with its features.
Warning
Taking your eyes off the road for extended periods could cause a crash resulting
in injury or death to you or others. Do not give extended attention to infotainment
tasks while dr ...
Windshield Washer Nozzle Hose Replacement
Windshield Washer Nozzle Hose Replacement
Callout
Component Name
Preliminary Procedure
Remove the hood insulator. Refer to Hood Insulator Replacement.
1
Windshield Washer Nozzle Hose
Procedure
...
Flushing
Special Tools
BO 42220 Universal 12V Leak Detection Lamp
GE 41447 R-134A A/C Tracer Dye Box of 24
GE 45268 A/C Flush Adapter Kit
For equivalent regional tools, refer to Special Tools.
Note: Flushing with the ACR 2000 is not intended to remove metal from
the A/C ...
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