Posted 2/26/2020 21:15 (#8067860 - in reply to #8066402) Subject: RE: Updating 4366 hydraulic pump
Yup - replace the relief valve before you do anything else. It's quick and easy right there on the valve bank behind the cab
You can buy them aftermarket very reasonably priced.
Quite often that takes care of the problem and if not you are out very little time and the cost is negligible compared to the pump.