Hello all I've got a 6620 lc7 koehring I'm intermittently loosing swing, left drive and dipper. If I idle down they come rite back or just wait at high rpm 5 to 10 seconds they come back. New filters new fluid. Cleaned pilot control screen. Guessing it's a pressure relief. If it is where is it located.
It sounds more like a seal plate on the pump that feeds that valve that any one relief valve.
Thanks for the response John c . I'll check that