TO 35

What Gregg said is correct.

Your transmission input shaft seal and probably your transmission input shaft as well is worn out. In your case it sounds like the wear is very bad.

As you add oil to the transmission fill cap it takes a very long time for the oil to flow through the bearings and into the hydraulic pump and differential cavity. By adding oil, you probably filled the transmission case high enough to reach the input shaft and the oil ran past the seal into the bell housing and out the hole in the bottom that MF placed there do drain such leaking oil from the bell housing. As Gregg said, this hole originally had a cotter pin in it to prevent its clogging with dirt.

The bad news: The oil will get onto your clutch if it has not yet done so and you must split the tractor to replace the seal.

Usually the transmision input shaft is worn and or rust pitted rendering replacement of the seal alone ineffective. New input shafts are no longer available and most used ones are also worn out. Some folks have the shaft welded up and turned back down to size.

Dean

Greg

(Not familiar with the 35, but the 20's and 30's have two open drain holes in the clutch housing to avoid oil damage to the clutch when either the rear crankshaft seal or transmission front seals leak.)

Greg