General Information

The service brake system is hydraulically operated and consists of two circuits. The system is equipped with a vacuum booster acting on all brakes. The dual-circuit system has increased reliability: if one circuit fails, the second continues to operate, although with reduced braking force. Under normal conditions both circuits operate simultaneously, providing effective braking of the vehicle.

The rear brake circuit includes a pressure regulator, which distributes pressure between the front and rear brakes depending on deceleration, and prevents the rear wheels from locking during sudden braking.

On all vehicle models, the front brakes are equipped with ventilated discs. The front brake calipers of the floating type are mounted on the steering knuckles and have one or two pistons.

On the rear wheels of all models without ABS, drum-type shoe brakes are installed, while models with ABS are equipped with disc brakes.

The rear drum brake shoes are actuated by wheel cylinders with two pistons. To compensate for wear of the friction linings, brakes of this type are equipped with an automatic adjustment mechanism for clearance.

The parking (hand) brake acts only on the rear wheels and is operated by a lever located on the floor of the cabin, through a cable system.

Models with rear disc brakes are fitted with single-piston floating calipers. The parking brake in these designs uses a conventional layout: brake shoes inside the drum.

Some models are equipped with an anti-lock braking system (ABS). The brake designs have much in common. Differences of the ABS brake system are described below.