Systems Operation General Information Power Flow (1) Final drive (2) Power transfer group (3) Drive motor The power train for the B, BC MODEL Lift Trucks consists of three main components: drive motor (3), power transfer group (2) and final drive (1). Electric storage batteries are used as a power source for drive motor (3). The drive motor turns power transfer group (2). The power is sent through the power transfer group to the axles. The axle turns final drive (1), which is part of the drive wheels. Power Train Systems Operation 5