Brake systems — general information (Mercedes-Benz Vito W638)

The vehicle's braking systems are designed to reduce its speed with the desired intensity until it stops, maintain a constant speed on descents and hold it when parked. In accordance with the characteristic braking modes, a passenger car must have a working, parking and spare system.

Each system consists of braking mechanisms (brakes) and a brake drive.

Braking mechanisms are designed to create and change artificial rolling resistance.

The brake drive is used to activate the brake mechanisms. It either transmits the force generated by the driver to the brakes, or controls an external source of energy required to operate the brakes.

The vehicle uses a service brake system consisting of wheel friction mechanisms and a dual-circuit hydraulic brake drive with a vacuum booster. The car is equipped with an anti-lock braking system (ABS). The front and rear wheel brakes are disc brakes.

The hydraulic brake drive ensures the transfer of the force created by the driver on the brake pedal to the brake mechanisms through the working fluid (brake fluid) with which it is filled. The vehicle's hydraulic drive is divided into two independent circuits in a diagonal pattern: one circuit operates the brake mechanisms of the front right and rear left wheels, the other - the front left and rear right wheels.

The working fluid of the hydraulic brake drive is a fluid of the DOT 3, DOT 4 or DOT 5 standard. DOT 5 is purple in color.

(Information copied from the website MercedesMan.ru)