MF 65 PTO seal replacement

PD Abbott

New User
I just finished my spring bush hogging and noticed oil running out from around the PTO... really bad leak.

Can someone give me the run-down on the seal replacement process?

From what I find online, the 20's & 35's come out from the rear. Please tell me the 65 will as well.

I assume it would be wise to replace the bearings while I'm in there.

Any help appreciated.
 
(quoted from post at 06:17:48 06/13/18) I just finished my spring bush hogging and noticed oil running out from around the PTO... really bad leak.

Can someone give me the run-down on the seal replacement process?

From what I find online, the 20's & 35's come out from the rear. Please tell me the 65 will as well.

I assume it would be wise to replace the bearings while I'm in there.

Any help appreciated.

I had 2 grooves worn in the area where the seal rides. Was able to use a Speedi-sleeve to cover the worn area before replacing the seal. 2 years later still no drips. Not sure if this helps or not, but someone on this forum made me aware of speedi-sleeves and I have been happy with the result.
 
After removing everything around the PTO, here's what I'm left with:

mvphoto18251.jpg


The flange around the shaft turns freely, but there it has no front/back play in it at all. The flats on the side prevent it from turning when the bracket is bolted on.

Where do I go from here?
 
I have a 150, should be the same PTO shaft. In the pictures, it shows a small tapered punch in the shaft hole to pull assy out. I had to adapt a slide hammer to remove mine.

Seal 186 0325
O-ring 195 522




Credit pictures to Big Deans
a270374.jpg

a270375.jpg
 
I had to adapt a slide hammer to remove mine.

Me too. I think my seal was original from 1964, it didn't leak but I had to remove the hydraulic pump anyway and figured "while I'm in there" and I've got it all removed.

Here's the adapter I made up quick. It's ugly, all I had on hand was a piece of angle iron so I split it down the angle with my plasma cutter, pounded it flat, re-welded it into a plate and quickly cut holes in it. One day, maybe I'll make it pretty. It got the job done in about 5 seconds when I'd been prying and pulling on the PTO shaft for about 30 minutes and it didn't move.

Pro Tip- use a slide hammer! :)


mvphoto18256.jpg


mvphoto18257.jpg


mvphoto18258.jpg
 
I'm old, just remembered :} While I had the shaft out, I replaced the bearing with a sealed type. I took the inside seal lip out so it would get oil. That way it has two seals. So if your shaft has wear at the seal contact point, the sealed bearing will solve the problem.

Sorry, I didn't record the bearing number.
 
(quoted from post at 09:11:29 06/14/18) I have a 150, should be the same PTO shaft. In the pictures, it shows a small tapered punch in the shaft hole to pull assy out. I had to adapt a slide hammer to remove mine.

Seal 186 0325
O-ring 195 522




Credit pictures to Big Deans

Hey Tom, if you've got Big Deans CD, since his family doesn't seem interested in making the CD available, you ought to start making copies or down load it to a website so the rest of the free world can benefit from Deans experience.
 
Wow, thanks for all the help on this. Exactly what I needed.

I really appreciate it.

I guess I'd better get some parts ordered.

I'll keep you posted.
 
Credit pictures to Big Deans
a270375.jpg


[b:241cf7043d]17. Seal 186 0325
19. O-ring 195 522[/b:241cf7043d]

Anybody have a part# for the [u:241cf7043d]bearing[/u:241cf7043d] [b:241cf7043d]#16[/b:241cf7043d] ?

Thanks.
 

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