#$%^&*AU2016101752A420161117.pdf#####ABSTRACT The disclosed two-mode tilt system for agricultural machines allows operation of a machine carrying tilling implements(3) in either a rigid mode or a floating mode. In the rigid mode the selection of appropriate hydraulic valve positions puts hydraulic pressure on a pair of cylinders(7), which causes a frame(5) to remain fixed in relation to a central frame(1), and allows the load taken by pneumatic tyres(2) and rear rollers(4) to be distributed as required. In the floating mode the pressure in the hydraulic cylinders(7) is removed by changing the valve positions, allowing the frame(5) to pivot on a pin(6) in relation to the central frame(1), so that the load is always shared between the tyres(2) and the rollers(4), and the machine can adjust itself to the ground contour.0 0 00 000 N (/)n
