Posted 9/4/2018 21:50 (#6970359 - in reply to #6969166) Subject: RE: Testing a Hydraulic Steering Valve
Steiger 580? Never heard of 580 STX. The 580 uses an PEV valve which is a module mounted on the end of a valve. Your issue sounds like this is faulty. Is this a model year 16 or newer? Then the valve is calibrated through A-post. If older then you would need tech with EST to troubleshoot