Enter a control system: pump, block of valves, electromagnetic valves, hydroaccumulators, blocking couplings and brakes. The main pressure in system is created by the pump, it is regulated by a control system depending on loading and the speed of the car, and ensures functioning of the hydrotransformer, blocking couplings and brakes.

Valves of switching operate liquid streams which come to the hydrotransformer and the planetary transmission.

The block of valves has three electromagnetic valves which operate gear shifting and blocking of the hydrotransformer.