WD PTO SEAL STILL LEAKING

The PTO seal was leaking on my WD. Replaced the seal and it's still leaking. (I didn't notice any grooves or anything on the shaft that would have caused this) I got a kit off of EBAY that included the lever seal and the gasket for the top of the housing. The seal that came with it is # 13797 (Single Lip Oil Seal - Solid, 1.375 in Shaft, 2.437 in OD, 0.250 in Width). From other posts that I had found on here, those dimensions seemed to jive with National seal # I had heard of being used. The seal that I took out looked to be original, and it was a much thicker seal than this new seal. Had almost a felt texture to it about 1/2" wide and then a rubber lip at the end. Where is this seal is just the rubber lip like you would see on a transmission tail housing. Is there another seal that I needed to replace? The parts diagram only shows one "oil seal" but something just doesn't seem right.

Not only is the seal still leaking, but it is now leaking around the shims that go around the bearing cage. The shims were still intact and so I was able to reuse those, but there was a black film that was coming off the shims. Are you supposed to use any type of silicone there to help prevent leaks. My understanding of the shims is to set the preload on the bearings and any type of additional material would make that different.

Thanks Guys!

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You sure you didn't nick the seal putting it in? Maybe rolled the lip slipping it on the shaft? If the shims are leaking there's either dirt on them or the cover isn't tight enough.

If the seal and running surface is good, then the other possibility is that the shaft is not running true (either due to being not straight OR because the shaft is wandering around fore-aft or side-to-side)... and the other thing that will do it, is pressure building up inside the area.  A plugged vent, or overfilled volume will do it...

As mentioned above, look up. I went through a pto dropbox and changed it out once. Still leaking. Hydraulic pump was next. Still leaking. Then a new valve. Still leaking. Turned out I had cross threaded the return line from the transport valve. That was a LOT of labor for what was an easy fix once located. Suffice it to say, I HATE OIL LEAKS!

cooz65 wrote: I'll check the seal tonight and see if I don't notice anything. For those that used two seals. Did you have the inside seal pointing towards the front of the tractor, and the outside pointing towards the PTO. Both seals pointing towards the PTO?

Both seals the lip should face the oil. So in your case the flat face of the seal faces outward..... Also pack grease inside seal lip, not only to protect it when it slides over shaft.... shaft greased too, but the grease will keep in place, the little spring that holds the lip to the shaft. The spring can pop out when tapping seal in place.