Fig. 8.1. The scheme of a drive of working brake system: I — a contour of forward brakes; II — a contour of back brakes; 1 — the forward brake mechanism; 2 — the main brake cylinder; 3 — the vacuum amplifier; 4 — the back brake mechanism; 5 — a pressure regulator; 6 — the case of a semiaxis of the back bridge; 7 — a signalling device

On the car the hydraulic brake drive which consists of the two-chamber vacuum amplifier 3 (fig. 8.1), the two-piston main brake cylinder 2 with a tank, a regulator of the pressure 5 established in a drive of back brake mechanisms is applied.

The forward contour of a drive influences disk brake mechanisms of 1 forward wheels, a back contour — on drum-type brake mechanisms of 4 back wheels.

In a tank of the main cylinder it is established поплавковый a signalling device 7 emergency falling of level of a brake liquid.