The brake works on all four wheels. The front wheels are equipped with solid or ventilated disc brakes, while the rear wheels are equipped with self-adjusting drum brakes or solid disc brakes (depending on the model). The braking system is hydraulic, actuated by a vacuum booster. The hand brake is actuated by a cable and works only on the rear wheels.
The hydraulic line of the brake system is divided into two circuits. On non-ABS models, the circuits are diagonal, while on models with ABS, the system is split into front and rear circuits. In case of failure of one of the hydraulic lines, full braking (on two wheels) provided by the second circuit.
The supply of brake fluid to the rear brakes is controlled so that the front brakes always lock first when braking hard. The fluid pressure in the hydraulic lines of the rear brakes is regulated by two valves (one for each brake), which are either screwed into the master cylinder, or mounted on the back of the bottom of the car (depending on the model).
The direct acting brake booster is installed between the pedal and the master cylinder. The amplifier is driven by a vacuum formed in the intake manifold. If the booster fails, the brakes will work, but it will take more force to push the pedal.
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