I recently borrowed a ford 555d Backhoe and the hydraulics are very slow (the loader and backhoe) i have replaced filters and there is plenty of fluid in the reservoir. I have been trying to do research with little to no luck. The Hydraulics are hesitant and slow with little to no power. You can hear the pump trying to do something, but nothing happens. I've noticed if you hold a lever back (to raise the backhoe) idle the machine all the way down and rev it back up it will make the backhoe raise at normal speed for a split second than back to be slow once again. Also you CAN NOT lift the boom and dig at the same time. Any help would be greatly appreciated!