The RT-400 provides the low-height “stair step” entry and exit of a cab down rough terrain crane. Its 20 US ton lifting capacity can accommodate lifts historically made by older 15 US ton capacity units while not exceeding 75% of the RT-400-A’s rated capacity. The RT-400-A’s pilotcontrolled hydraulic design provides the “feel” and precision of direct mechanical to hydraulic level controls while moving the noise and heat of control valves outside the cab operator environment.