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:
Replacing LATCH System Parts After a Crash
Warning: A crash can damage the LATCH system in the vehicle. A damaged
LATCH system may not properly secure the child restraint, resulting in serious
injury or even death in a crash. To help make sure the LATCH system is working
properly after a crash, see your dealer to have the system ...
Transmission Case Cleaning and Inspection
Transmission Case Cleaning and Inspection
Callout
Component Name
Caution: Do not use abrasive pads or bristle devices to clean
the sealing surfaces. Abrasive pads produce a fine grit that can effect
transmission func ...
Front Wheel Drive Shaft Seal Replacement - Left Side
Special Tools
DT-446 Installer Drift
DT-7004 Slide Hammer
DT-23129 Universal Seal Remover
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
Remove the front suspension s ...
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