Hydromechanical transmission with one-stage hydrodynamical transformer. At the abnormal loading under especially difficult road conditions such design provides smooth change of transmitted  twisting moment depending on resistance of movement. The four speed box of transfers with blocked differential allows to choose an optimum mode of movement of the carrier under any road conditions. For effective transfer of capacity two planetary onboard and one conic reducers with blocked differential are installed on the each section. Tape brakes of floating type with pneumatic drive and also duplicating mechanical drive of brakes control of the first section provide reliable work of the brake system of the carrier.

Connection of the units of transmission among themselves is carried out by shafts with intermediate supports and gear shafts.