It is shown an apparatus comprising a tubular axle cross member (101) with an end plate (102, 103) attached to each end thereof each end plate (102, 103) having an inboard face (138, 139) and an outboard face (154, 155) a motor (106, 107) mounted to the inboard face (138, 139) of each end plate (102, 103) and a mechanical drive system having an upper housing (113) mounted to the outboard face (154, 155) of each end plate (102, 103) and having a lower housing (140) connected to a steering linkage to pivot the lower housing with (140) respect to the upper housing (113) without pivoting the motor (106, 107).
