System overview
The hydraulic brake system is operated by the brake pedal and acts hydraulically on all the wheels. When the brake pedal (1) is depressed it acts mechanically via the servo unit (2) on two pistons in the master cylinder (3). The pedal force is reinforced by the servo unit and the increased pressure on the pistons in the master cylinder is transmitted simultaneously, but through two separate hydraulic circuits, to the front (4) and rear (5) wheel brakes. The primary circuit consists of the left-hand front wheel brake and the right-hand rear wheel brake. At the wheel brakes the brake pistons are pressed out and push the brake pads against the brake discs (6). Should a brake circuit fail due to leakage, for instance, braking power will still be available in the other circuit.
