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John: You could probably stop or at least significantly reduce the flow of Powr-Trol oil into the rear end cavity for the most part by just switching off the pto. When the pto turns, so does the hydraulic pump, and those pump gears turning is pushing the oil through that pto shaft to faulty rear end seal. Replacing that seal is not very difficult. It's a pretty straightforward procedure on a late-styled "B". Reomve the battery, then drain the rearend lube, and get a couple strong backs, or one engine hoist and remove the rear cover, Powr-Trol still attached. It will all slide clear after you remove that 15 or so bolts around the flange that attaches the rear cover to the rear end. The pto just slides off of a splined coupler. I think that old double-chevron pump seal might have been replaced by two seals nose to nose. Deere has done that in several applications like power steering pumps and such. To be really, really, sure that you have the leak stopped, it might be a good time to replaced the actual axle seals that are behind the bull gears on each axle on the inside end of the axles. The outer end felt is just a dust shield. While you are that far, if you remove the axles, you can "mop" the excess oil up in the axle housing. If you leave it there, it will continue to work its way out for a long time to come, and you might think you still have a leak when it is really just the trapped oil still coming out. When it's time to replace the rear end cover, I like to use a couple of longer bolts with the heads removed, or some tough threaded rod, to fashion two guide pins to allow you to keep the gasket in position and support the rear cover while you carefully slide it up into position. Be sure to use a reputable sealant on the cover gasket. I like good old Permatex, but there are many other that work well, too. Frank
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