A vehicle for receiving and delivering granular material, such as agricultural seeds, includes a frame supporting a container defining an open top chamber having a bottom outlet. An elongated conveyor is supported by a system which includes a first support arm having one end pivotally connected to a side wall of the container for multiple directional movements and a second support arm pivotably connected to the opposite end of the first support arm. The opposite end of the second support arm supports an intermediate portion of the conveyor near its center of gravity and in suspended relation for tilting and rotating the conveyor. Power actuators are connected to rotate and pivot the first support arm to position the conveyor in many selected positions including the conveyor inlet under the outlet of the chamber, a storage position and a position between horizontal and substantially inclined for filling other containers.