The hydraulic foot brake assembly consists of the master cylinder, the brake booster, and the disc brakes for the front and back wheels. The brake assembly is divided into two circuits.
One brake circuit acts on the front, the other on the back wheels. If one brake circuit fails, for example due to leakage, the other circuit can stop the vehicle. The pressure for both circuits is built up in the tandem master cylinder via the brake pedal.
The brake fluid container is above the master cylinder and supplies brake fluid to the entire brake assembly.
The brake booster stores part of the inlet vacuum produced by the engine (the diesel engine has a special vacuum pump). Suitable valves increase the pedal pressure if necessary.
The front disc brakes are equipped with a so-called floating caliper. In a floating caliper, only one piston is required to press both brake pads against the brake disc.
On the rear suspension, two fixed calipers provide the required pressure. In the case of a fixed caliper, two pistons are required to press the brake pads against the brake disc.
