this morning while moving hay bale the 186 hydro just quit moving, backed up to a bale, stopped and then no go, no forward or reverse but everything else works the hyd remotes steering brakes 3 point hitch, and pto all work. the clutch pedal light is working like always on when pedal is pushed off when pedal up. all the external linkages and control cables move like they should. there is a sound that seems to be different than before it happened it sounds like hyd fluid escaping from somewhere internal there is no external leaks and fluid is above the add mark. the hydro was rebuilt this past winter. Just looking for advise of where to start looking for a problem. I do have both the I T Manual and a genuine IH service manual for the hydro trans so you can make specific references if need.