It was fitted hydrostatic transmission having the normal Leyland 680 six cylinder engine driving two Rexroth Hydromatic axial piston pumps. Each pump supplied fluid to a Volvo fixed displacement compact axle-end motor which drove the axle directly. The maximum system pressure was in the order of 400 bar. This arrangement was only fitted to one bogie, the other one retaining its normal drive but with the cardan shaft disconnected. The unit was finally scrapped by Vic Berry at Leicester.