Chevrolet Sonic Repair Manual: Hydraulic Brake System Description and Operation
- System Component Description
-
The hydraulic brake system consists of the following:
- Hydraulic Brake Master Cylinder Reservoir
-
Contains a supply of brake fluid for the hydraulic brake system.
- Hydraulic Brake Master Cylinder
-
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
-
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
-
Carries brake fluid to and from hydraulic brake system components.
- Hydraulic Brake Wheel Apply Components
-
Converts hydraulic input pressure into mechanical output force.
- System Operation
-
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:
Automatic Transmission
P (Park): This position locks the front wheels. It is the best position to use
when you start the engine because the vehicle cannot move easily.
Warning
It is dangerous to get out of the vehicle if the shift lever is not fully
in P (Park) with the parking brake firmly set. The vehicle can ro ...
Tire Dismounting and Mounting
Caution: Use a tire changing machine in order to dismount tires. Do
not use hand tools or tire irons alone in order to remove the tire from the
wheel. Damage to the tire beads or the wheel rim could result.
Caution: Do not scratch or damage the clear coating on aluminum wheels
wit ...
Radiator Replacement (LDE LUW)
Radiator Replacement
Callout
Component Name
Preliminary Procedures
Drain the coolant. Refer to Cooling System Draining and Filling.
Remove the engine coolant temperature sensor.
Remove the air conditioning condenser. R ...
0.0106