We have a 2940 4WD that is having an issue. Went to dump the bucket the other day and the boom was raised about half way and I lost all hydraulics to the bucket and 3pt hitch and steering as soon as the bucket was fully dumped. . Changed the oil and filter, and everything seemed to work ok, then tonight it did the exact same thing, at the same time (when bucket was fully dumped). I have very partial hydraulics this time. If I flip the high/lo selector it makes the hydraulics almost stop. Any assistance? The clutch is starting to go so I know we have a tractor split in the future. Just don't want to do it until summer.