General System Description

The car is equipped with two independent brake systems:
- Hydraulic brake system
- Handbrake system
The hydraulic brake system is operated by the brake pedal and acts hydraulically on all the wheels. The handbrake system is operated by the handbrake lever and acts mechanically on the rear wheels.

Cars Without Antilock Brake System (ABS) And Cars With ABS Mark IV





The hydraulic brake system consists of two separate diagonal brake circuits. One circuit is for the righthand front wheel and left-hand rear wheel (primary circuit) and the other circuit is for the left-hand front wheel and right-hand rear wheel (secondary circuit). With the circuits split in this way, if one circuit should fail because of leakage, for instance, the other circuit still remains operative and always provides at least 50% of the total braking power.

Cars With ABS Mark II





The ABS Mark II is a 3-circuit brake system with individual control of two circuits (one for each front wheel) and common control of the third circuit (for the rear wheels).
Instead of a conventional vacuum servo unit, the ABS Mark II uses hydraulic pressure provided by a high-pressure pump.