Hoisting unit for mobile working unit such as a tractor, with at least one lower linkage arrangement (30), a pressure controlled hydraulic upper linkage (12), the pressure space of which can be connected to a pump or tank via a directional control valve arrangement (18). A locking unit is located at the upper linkage and includes a releaseable check valve. The unit includes a pressure receiver. An independent claim is included for a method of controlling the hoisting unit.
