A caster wheel alignment system for selectively re-orienting improperly oriented caster wheels for transport vehicles of a conveyor system, such as a circular sorter. The alignment system includes a main support frame couplable with the conveyor at a drive track of the conveyor. The system includes a horizontal cam for adjusting an orientation of the caster wheel from a leading orientation to a trailing orientation. In some forms, the alignment system may include a bypass system, such as a float frame, supporting the horizontal cam, and a vertical cam. The vertical cam provided to temporarily move the float frame and horizontal cam away from the transport vehicle and/or drive track to permit the vehicle to move through the alignment system. The vertical and horizontal cams coordinate to intercept and correct improperly oriented wheels without significantly impeding the movement of the transport vehicle along the drive track.