With Mark II ABS System

Type
- Three separate diagonal brake circuits

Hydraulic Brake System
- Acts hydraulically on all wheels

Handbrake System
- Acts mechanically on rear wheels





The Antilock Brake System (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.





When the brake pedal is depressed, pedal force is boosted by a servo cylinder which is supplied with brake fluid under pressure from the pressure accumulator. Pressure builds up in the master cylinder. The pressure on the pistons in the master cylinder is propagated in the brake system and acts on the brake piston in each hydraulic body. The brake piston presses the brake pads against the brake disc.

When the brake pedal is released, the pistons in the master cylinder return to their original position's and the return passage is opened. Pressure is relieved and the brake pistons are retracted to the rest (brakes off) position by means of the piston sealing ring in the brake cylinder.