Think we got a hydro that went sour, gotta pull the audience for their knowledge. This tractor ran fine up to the point that it will not move. It was a sudden deal with no forewarning . While running, I can put it in gear, let the clutch out and will not move. While in neutral, the double chain that connects to the final drive does turn, but acts like it wouldn't take much to stop it, because you can see it slow down almost to a stop then speed up again, which tells me the pressures are not there in the hydro unit. Does this hyrdo unit rely on the clutch plates to power the unit or does its power source come from the long shaft that runs from the rear of the tractor all the way to the motor?. ...any and all responses would be welcome,and oh, all the fluid levels are were they need to be, and the PTO works like it should, so that tells me the shaft is not broke into 2 pieces. It also does not make a difference whether the hydro is in direct drive or not, this is a 2 speed hydro, not a 3 speed.