Thanks for your helpful comments. I had already tried left turning the ign key at idle to release pressure. Also with the switch on but not running I had toggled the button on the right stick. Finally, I released the bobcat pressure at the connector by unscrewing the fitting. There was almost no pressure, maybe none since only a few drops of fluid came out. The problem is [I think] with the attachment, a grapple. After all the above, I still could not attach the flat face lines. So I unscrewed the fitting on the attrachment which was under pressure and which bled fluid. After all that the hookup went ok. I had work to do which went ok, so I didn't obsess over the problem. Might be I failed to release and equalize pressure before I shut down last time I used the grapple. I think I'll look into some sort of release valve for the grapple if this problem recurs. Thanks for your advice and help. Ken