safe towing height pivoting the fork lift on axle assembly 23 with de coupling of the splined drive shaft to the two wheel differential and with the addition of lights and safety chains the fork lift is now ready to be towed at highway speeds to describe de coupling of the drive shaft further explanation of the drive train assembly 126 see fig2 is required a short section of a splined and slip type drive shaft 120 with u joints on both ends connects the differential of the two wheel assembly 23 to the shaft 127 which is supported by two bearings 121 provided on the assembly frame 125 the u joint assembly 120 relieves stress on the differential caused by torsion or mis alignment as occurs in conventional drive train assemblies frame 125 is welded to sliding boxes 20 which slide on the frames 1 and 1a shaft 127 has external splines on one end which mesh with internal splines of the coupler sleeve 128 which sleeve is fastened to the output shaft of hydraulic motor 49 the outboard bearing shown in fig2 may not be needed if the motor has such a bearing the splines on shaft 127 and the coupler sleeve 128.