PTO Rebuild

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Dale Finch
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PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 12:02 pm

I have a spare PTO that I decided to rebuild, just in case...

It is a rather simple assembly, but there are a couple things you may run into, so I decided to document it. If I have made an error, or someone has something to add, please feel free! :D

First, you do not have to drain the transmission to remove the PTO. That said, it is probably a good time to do it anyway!
You only need to remove the PTO, itself, not the adapter plate.
20180222_182428 (Small).jpg
Sorry about the 90 degree rotations...nothing I can do about it (that I know of!)

20180222_182451 (Small).jpg


First thing you need to do is remove the grease shield...I used a screwdriver to pry it upwhere a small divet is, then grabbed it with some duckbill pliers:
20180318_150329 (Small).jpg

20180318_150358 (Small).jpg


I then turned it around in the vice, and using a block of wood, drove the shaft down and out:
20180318_150834 (Small).jpg

20180318_150859 (Small).jpg
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Dale Finch
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Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 12:26 pm

Page 2...
Now you can remove the grease shield, letting you clean and check the bearing. Here you can see that this is the old-style, STAKED shaft. In this case, it had been restaked sometime in the past, but still is allowing slight movement:
20180318_153603 (Small).jpg

20180318_153606 (Small).jpg


So I repunched some of the old punch marks, now it's nice and tight (hopefully!):
20180318_153932 (Small).jpg


Next, remove the old seal:
20180318_152013 (Small).jpg

20180318_152128 (Small).jpg

Many are worried about whether the replacement seal is correct...the old seal (left) is definitely thicker, but the one on the right IS the proper replacement seal:
20180318_152613 (Small).jpg
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Dale Finch
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Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
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'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 12:38 pm

Preparing for reassembly, I used some "utility cloth" to polish both the seal end as well as the bushing end:
20180318_154747 (Small).jpg

20180318_154825 (Small).jpg

20180318_155202 (Small).jpg


Cleaned up the retainer, in preparartion for paint:
20180318_155512 (Small).jpg

20180318_160401_001 (Small).jpg

20180318_162227 (Small).jpg
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Re: PTO Rebuild

Postby CSA_CUB » Tue Mar 20, 2018 1:10 pm

Nice JOB! Dale
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Dale Finch
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Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 1:28 pm

With the retainer painted, I drove in the new seal, making sure there were no burrs:
20180319_195248 (Small).jpg

20180319_195740 (Small).jpg


With the inside visible, I shot some grease through to clear any old grease out:
20180319_195958 (Small).jpg


After greasing the bearing, (and using an old auto bearing part) I drove the shaft/bearing back into place:
20180320_135205 (Small).jpg


It must be all the way to the shoulder, allowing the retainer ring to fit into the groove above the grease shield:
20180320_135433 (Small).jpg


Installed the retainer clip,
20180320_140119_001 (Small).jpg


...and all that is left to do is to pump grease through until it begins to come out of the shield. A new gasket, and it is ready to install...which is another HOW TO!!
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Dale Finch
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Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 1:33 pm

20180320_140643 (Small).jpg

20180320_140420 (Small).jpg
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Re: PTO Rebuild

Postby Willy » Tue Mar 20, 2018 1:39 pm

Thanks! Especially for the seal pics. I've got a PTO rebuild on hold at the moment. My old PTO shaft had the outer end broken off at the splines at one time and then welded back on. I ordered a "new" one from JP tractor salvage and got a week or so ago and they sent me the whole assembly as you've pictured. I've had it apart for several days now as I haven't ordered a new bearing and seal yet. Well, I did order a bearing but got caught up in some confusion as to whether or not it was a C-225 or a C-255 so I cancelled the order.

Can't wait for your Part II on reinstalling the assembly.
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

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Dale Finch
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Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 2:07 pm

I believe you can get the bearing at NAPA, but not sure.

The shaft you got from TM Tractors, probably has the groove just forward of the bearing, that keeps it in place instead of the staking. One problem I found recently is that if your old shaft was the staked style, and you are now using the new style, the hole in the grease shield is too small to allow it to go all the way down (back) exposing the grease shield retainer ring groove. This is due to the fact that there is a shoulder where the groove is for the bearing retainer ring. I resolved the problem by filing out the hole until the grease shield went all the way down.

Maybe a couple photos will help. These are from a previous PTO rebuild:
Here you can see (if you are lying down!!) the small retainer clip that is above the bearing, is located on a "shoulder" built into the shaft.
20170718_172638 (Small).jpg

Here I filed the hole in the grease shield until it slipped down over that shoulder...
20170729_123056_001 (Small).jpg

20170729_123653 (Small).jpg

...allowing the large retainer ring/clip to be installed.
20170729_125215 (Small).jpg

20170729_125238 (Small).jpg
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Dale Finch
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Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Tue Mar 20, 2018 2:58 pm

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Re: PTO Rebuild

Postby Willy » Tue Mar 20, 2018 3:50 pm

Thanks again Dale! I'm going to use the whole assembly I got from JP Salvage and yes it is the newer clip style and I've been keeping all the parts to it together.

NAPA lists the bearing as a J6205 and other sources I've found also use a 6205 in their part number.

I've had a lot of non-Cub stuff going on lately and haven't had time to make it to NAPA yet (next town over).
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

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Re: PTO Rebuild

Postby 5 Forward » Fri Mar 25, 2022 6:52 am

Thanks, everyone for your replies. With the shield in place, the snap ring (lock ring) would not fit into the groove in the housing. Enlarging the center hole should fix the problem. I did replace the bushing.

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Re: PTO Rebuild

Postby ricky racer » Fri Mar 25, 2022 7:37 am

Great post Dale!! Thanks for taking the time to put this post together. The only thing that I might add is with the new seal being thinner than the original one, if your shaft has wear from the older seal, the new thinner seal can be installed at a depth to possibly miss the wear grooves caused by the old seal.
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Dale Finch
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Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: PTO Rebuild

Postby Dale Finch » Fri Mar 25, 2022 8:25 am

Good addition!
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Re: PTO Rebuild

Postby k hutchins » Sat May 14, 2022 11:25 am

Just reviewed this post because l noticed some oil on the floor below the PTO of my mowing tractor.
Great step by step with pictures. Thanks Dale.

To the site admin, when l tried to search PTO seal, and then pto, it automatically disallowed pto as not a common word. You may want to fix that. I found this thread by searching pages looking for pto. It wasn't too bad, it was on pg 3.
Why is there never enough time to do the job right, but always enough time to do it over. :?:

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Re: PTO Rebuild

Postby Barnyard » Sat May 14, 2022 11:36 am

k hutchins wrote:To the site admin, when l tried to search PTO seal, and then pto, it automatically disallowed pto as not a common word.

The search engine will not work for any word with three or less letters.
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