Abstract: A hydraulic pilot control arrangement for a spool valve is provided, wherein the spool of the spool valve is biased towards a central position. The arrangement includes a first and a second pilot hydraulic line connected to opposite sides of the spool of the spool valve and a pilot pressure regulating arrangement is provided for selectively establishing or removing a pilot pressure in each of the first and second lines. The arrangement includes a damping device including a chamber divided into a first and a second pressure compartment by a sliding piston, the first and second pressure compartments being connected respectively to the first and second pilot hydraulic lines, and the piston is biased towards a rest position in the chamber.

Abstract: A hydraulic pilot control arrangement for a spool valve is provided, wherein the spool of the spool valve is biased towards a central position. The arrangement includes a first and a second pilot hydraulic line connected to opposite sides of the spool of the spool valve and a pilot pressure regulating arrangement is provided for selectively establishing or removing a pilot pressure in each of the first and second lines. The arrangement includes a damping device including a chamber divided into a first and a second pressure compartment by a sliding piston, the first and second pressure compartments being connected respectively to the first and second pilot hydraulic lines, and the piston is biased towards a rest position in the chamber.

Abstract: A loader including a vehicle including a structural frame and an elongate boom arm is provided. The boom arm is pivotally mounted at its first end to the frame and has at its second end an assembly for receiving a tool. The loader includes actuators to actuate the boom arm and its associated assembly. The loader also includes a control unit provided with user operable controls for controlling position and orientation of the boom arm and its associated assembly. The actuators integrally incorporate therein magnetic sensors operable to sense longitudinal extension of the actuators and thereby generate actuator feedback signals indicative of the longitudinal extension. The control unit processes the actuator feedback signals in a feedback control to render the position and orientation of the boom arm and its associated assembly adjustable using the user operable controls.