A load sensing and lift cylinder adjusting system for a three-point linkage arrangement on a tractor, which includes； a control system and load setting system； a load sensing system in the form of a load sensing proportional valve in fluid connection with the lift cylinder； a load adjusting system which includes a load sense pump connected to the load sensing proportional valve and the tractor's hydraulic oil supply； the load sensing system monitors load on the lift cylinder via oil pressure from within the lift cylinder and if the load drops from the pre-set load this sends a signal to the load adjusting system which diverts oil from a hydraulic oil supply to the lift cylinder to maintain the pre-set load； if the pre-set load is exceeded a signal is sent to the load adjusting system which diverts oil from the lift cylinder back to the tractor's hydraulic oil supply.
