Posted by ScottyHOMEy on September 29, 2008 at 02:50:07 from (70.105.248.74):
In Reply to: Super A belt pulley posted by Jay Poole on September 29, 2008 at 02:33:39:
Are you talking about the actual belt pulley or a pulley mounted to the PTO shaft to drive the mower? You'll want to have that terminology correct if you go to order new seals, just in case they might be different for each application. (The belt pulley is oriented perpendicular to the long axis of the tractor, and the PTO is parallel to that axis.)
In either case, your parts book will show a single seal on either shaft. The new reality is that the shells of the seals now available are not as deep as the originals, and it is quite common to put two seals on those shafts, one over the other. This is sometimes also and effective cure for a spot in the shaft that might have been worn down far enough that a new seal on that same spot would still leak. If in using two seals you are able to get the seal surfaces on different, unworn spots on the shaft, you should get a good seal. Some folks go so far as to pack grease between the two seals. That might be overkill if you've got a good surface on the shaft to seal to, but falls into the "can't hurt, might help" category in my view.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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