PTO Rebuild

[Dale Finch]

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!

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.

Sorry about the 90 degree rotations...nothing I can do about it (that I know of!)

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:

I then turned it around in the vice, and using a block of wood, drove the shaft down and out:

[Dale Finch]

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:

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

Next, remove the old seal:

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:

[Dale Finch]

Preparing for reassembly, I used some "utility cloth" to polish both the seal end as well as the bushing end:

Cleaned up the retainer, in preparartion for paint:

[CSA_CUB]

Nice JOB! Dale

[Dale Finch]

With the retainer painted, I drove in the new seal, making sure there were no burrs:

With the inside visible, I shot some grease through to clear any old grease out:

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

It must be all the way to the shoulder, allowing the retainer ring to fit into the groove above the grease shield:

Installed the retainer clip,

...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!!

[Dale Finch]

[Willy]

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.

[Dale Finch]

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.

Here I filed the hole in the grease shield until it slipped down over that shoulder...

...allowing the large retainer ring/clip to be installed.

[Dale Finch]

Guess I should have documented the installation I did about a month ago...and I am hoping NOT to need to use this one for a looooong time!!

But maybe this will help:
http://www.farmallcub.com/rudi_cub/www.cleancomputes.com/Cub/Blue%20Ribbon%20Service%20Manuals/GSS-1411%20Service%20Manual%20for%20Cubs%20and%20Lo-boy%20Tractors/Section%206A%20-%20Power%20Take-Off%20And%20Belt%20Pulley/Section%206A%20-%20Power%20Take-Off%20And%20Belt%20Pulley.htm

[Willy]

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).

[5 Forward]

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.

[ricky racer]

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.

[Dale Finch]

Good addition!

[k hutchins]

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.

[Barnyard]

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.