D17 Series IV PTO seal clarification

as if my manifold ordeal wasn't exciting enough

I have a pretty good drip from the PTO seal. after reading, consulting the AGCO parts catalog I have more questions than answers...

I removed the PTO guard in an effort to see the seal #, which looks like a National 11012 (space) SW (I can't confirm the SW, so don't take that as gospel)

anyway after pounding parts catalogs, I came up empty for that seal. the Allis seal 70241779 doesn't seem to have the nice felt ring the OE seal has (i'm assuming this is the original seal, there is orange paint on it)

i'm looking at 17 in the photo here:



before I move on, I should say I feel/see NO play in the shaft

my confusion comes with some of the parts sellers saying to "double stack" the seals...I have done this in marine applications, but this seems like a cop out instead of getting the proper seal.

so, my questions are:

-is there a better seal for this? the double stack thing seems ghetto to me

-is there enough room to double up on the seals?

-the triangular seal retainer seems like it would pop out easy enough. I am assuming if I do that I will need the o-ring and I will lose all of the oil, correct?

any input would be great, especially if I can find the seal with the felt on it

Go back with the kid from "back to the Future" to get the felt seal... We have had 0 issues with the factory seal .. Never heard of double stacking this seal in my 50 years of experience.  Head the tractor down hill as much as possible, take out the three bolts, put a clean bucket under the rear,  pull out the Triangle retainer  -  if the splines will damage the seal when installed , pull the shaft - this will drain the front compartment as well - so get a biggger bucket or two,  clean up the shaft, install the factory seal and oring, reinstall and fill the oil. Our guys do it in 30 minutes - lasts for years.    No big deal.  

Acdiesel wrote: 13661 or 13651 either will work Just install one seal Make sure your PTO shaft doesn't have any major wear or you may need to install a speedi-sleeve where the seal rides

true

what brand seal is that? I found a Ebay listing for a CR seal # CR13649...so are the 13661-651 seals you mention another option?

I hope to call napa with either the seal #s you gave or the one I found and just get this done.

Thank you for the confirmation on draining the oil...I thought that was going to be the case for sure.

park down hill...F'n brilliant!!

thanks for babysitting me guys, I really appreciate it

Don, ya sure got to like it when plan comes together. 

Just changed the one on my 170. Make sure you drive the seal out in the right direction. Don't EVEN ask me how I know.

Around here they are just called hydraulic couplers and many say pioneer couplers. Pioneer is a brand.


Edited by Lonn - 27 Jul 2020 at 6:47am