For self-supporting loads, the jeep and dolly configuration is typically equipped with loading bunks and power tower. The loading bunks are used to tie one end of the load to the jeep and the other to the dolly. Air and electrical lines are then hung on the load completing the connection. The power tower in the dolly is used to raise the load over obstacles or lower it to a minimum to clear overhead obstacles.
When the self-supporting load is detached from the two units, the nine-axle dolly’s tow bar is then attached to the jeep for the empty return trip.