I have my pump and PTO shaft out of my 8N tractor to rebuild the pump. The PTO shaft has leaked for some time so I thought it a good time to replace the seal and gasket while it was out. I thought I could take the snap ring out of the backside to get to the seal, but I realized I would have to press the sleeve of the shaft. Can the seal be replaced from the other side? To do this, I would have to remove the the PTO override clutch which I can't seem to get off and can't see how to get it off the main shaft. I have wanted to replace that too because it is worn and my bush hog drive shaft would often come off in the middle of cutting cause of the slop on the clutch. Anybody have any tricks for getting one off?