Basic Brake System Operation And Description

The hydraulic brake system consists of the following

Hydraulic Brake Master Cylinder Fluid Reservoir:

Contains supply of brake fluid for the hydraulic brake system. If the fluid level goes low, air will be introduced into the system and cause a soft or low brake pedal with poor stopping ability. Fix the leak and bleed the 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 for the front and rear brakes. 

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 is achieved through dynamic rear proportioning (DRP), which is a function of the ABS modulator. Refer to ABS Description and Operation for specific information on the operation of DRP.

Hydraulic Brake Pipes and Flexible Brake Hoses:

Carries brake fluid to and from hydraulic brake system components. From master cylinder to calipers and wheel cylinders. 

Hydraulic Brake Apply Components:

Converts hydraulic input pressure into mechanical output force to stop the vehicle. 

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 linings against rotating brake system components. 

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