Dieselham1
Member
It’s like the devil takes over when engaging the lift. I begin to raise the boom and then it just keeps lifting no matter what wiggling of the joystick I do. I thought trash got in the lift valve spool so I cleaned and polished some minor scratches but this seems to be electrical…. I took the small pressure lines off at the lift valve that goes from the joystick to the valve to make sure oil was not going to the lift side of the spool when it malfunctioned and that seems right…. No oil to the valve to actuate it from the joystick when it malfunctions. It’s Like the ride control takes over and hangs wide open. Tried turning off the auto for ride control and maybe that worked a few times it malfunctioned, but now it’s constantly going straight up…. Sad to say it hasn’t had the filters changed in 3 years according to the date on the filter. I’m starting there then refilling with new hydraulic fluid