tractor directional control valve
I have an old 5020 and when I try to use the lever inside the cab to raise or lower an implement the resistance is major. I push the lever and it is like I am up against a wall. I have to hold the lever against the resistance until the implement is up or down all the way and then the lever pops forward after the pressure is off. Any thoughts on what is wrong inside the directional control valve? Thanks.