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1950 Cub PTO info

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Rainman4820
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Tractors Owned: 1950 Farmall Cub Demonstrator
Location: Stephenville, Texas

1950 Cub PTO info

Postby Rainman4820 » Sun Mar 06, 2016 12:50 pm

Hello all, I have been lurking around the site for some time and recently joined the site and this is our first post. Looking for a parts diagram that shows how the PTO lever engages the PTO shaft. We are trying to diagnose a clicking sound heard coming from the lever area just after engaging the PTO. Everything runs fine, just starts a hard clicking in the lever when engaged. We removed the shift plate and then realized you can't see how the lever is engaging. Great forum and Many thanks in advance!

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Trent M
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Re: 1950 Cub PTO info

Postby Trent M » Sun Mar 06, 2016 5:36 pm

Go to the link below and then download one of the parts manuals. The PTO parts will be listed in the Drive Train section.

http://www.farmallcub.com/[ Sorry, direct links to manual section is not allowed. ]/index.p ... ls&order=0

The PTO is pretty straightforward, but hard to see anything in there unless you take off the back cover. Let us know what you find and Good Luck!!
Trent McPeak

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Don McCombs
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Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
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1948 Farmall Super A
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Location: MD, Deep Creek Lake

Re: 1950 Cub PTO info

Postby Don McCombs » Sun Mar 06, 2016 6:04 pm

You should be able to see the engagement by removing the transmission fill plug and looking in with a bright flashlight.
Don McCombs
MD, Deep Creek Lake

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The best teachers are those who show you where to look, but don't tell you what to see.
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BIGHOSS
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Re: 1950 Cub PTO info

Postby BIGHOSS » Mon Mar 07, 2016 7:17 am

viewtopic.php?f=1&t=41104&p=340610&hilit=minature#p340573

This setup works for a light to see down through the filler hole. Easy to make. Just use a small miniature 12 volt light bub.
"Courage is being scared to death-but saddling up anyway".......John Wayne

Rainman4820
5+ Years
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Posts: 19
Joined: Sun Mar 06, 2016 12:37 pm
Zip Code: 76446
eBay ID: Pudgey3
Tractors Owned: 1950 Farmall Cub Demonstrator
Location: Stephenville, Texas

Re: 1950 Cub PTO info

Postby Rainman4820 » Sat May 21, 2016 2:34 pm

Now that I can see the issue, I plan to replace (or maybe repair) the pto lever and shaft without removing the pto shaft assembly, guts, etc if at all possible..... does anyone have instructions for removing the pto shift lever? I have the manual but it just says remove it....Looks straightforward but want to make sure I am not going to accidentally drop or lose something important. Also, can the pto shift lever and shaft be removed from the exterior or do I have to breakdown and get inside to disassemble?
Thanks
rainman

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Don McCombs
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Posts: 17429
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Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: 1950 Cub PTO info

Postby Don McCombs » Sat May 21, 2016 4:23 pm

If this is all that you are replacing, it can be done externally. Anything else will require getting inside the case.

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Photo courtesy TM Tractor Parts
Don McCombs
MD, Deep Creek Lake

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Proud Member of Maryland Chapter 39

The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor

Rainman4820
5+ Years
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Posts: 19
Joined: Sun Mar 06, 2016 12:37 pm
Zip Code: 76446
eBay ID: Pudgey3
Tractors Owned: 1950 Farmall Cub Demonstrator
Location: Stephenville, Texas

Re: 1950 Cub PTO info

Postby Rainman4820 » Sat May 21, 2016 4:47 pm

Hello Don, and no sir, I am replacing the part found in the link and picture below. Its not the shift lever, but the shaft that connects to the lever that engages and moves the PTO clutch forward and backward. Thanks for the information...I will start breaking the PTO down................

Picture credit TM Tractor Parts
shaft.jpg


http://www.tmtractor.com/new/pt/317fp.htm

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Don McCombs
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Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
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1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: 1950 Cub PTO info

Postby Don McCombs » Sat May 21, 2016 5:04 pm

That part has been repaired by some on the board using drill rod to replace the short pin. Perhaps someone who has done it will jump in with some suggestions.
Don McCombs
MD, Deep Creek Lake

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The best teachers are those who show you where to look, but don't tell you what to see.
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Dale Finch
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Re: 1950 Cub PTO info

Postby Dale Finch » Sat May 21, 2016 6:13 pm

The lever must be removed from the INSIDE...sorry. But it is not difficult. You can clean any gunk out while you have the PTO shaft assembly removed. And check for any play of the bearing (shaft moving for and aft any)

I'm pretty sure there is a HOW TO on the whole procedure. Check your PTO SEAL and if leaking, replace it while you have it apart. Otherwise, all you should need is a new or repaired shift lever and new gaskets. Also, IF you still have the felt washer/seal on the lever shaft in the side of the block, don't lose it.

Good luck!
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Rainman4820
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Joined: Sun Mar 06, 2016 12:37 pm
Zip Code: 76446
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Tractors Owned: 1950 Farmall Cub Demonstrator
Location: Stephenville, Texas

Re: 1950 Cub PTO info

Postby Rainman4820 » Sat May 21, 2016 7:25 pm

Thank you.... How much play in the PTO shaft is acceptable? Nothing appears to be leaking but the shaft does move maybe 1/16" to 1/8" back and forth, although it doesnt appear to move while running...

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Dale Finch
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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: 1950 Cub PTO info

Postby Dale Finch » Sat May 21, 2016 8:00 pm

I'm not really sure what the "limit" would be, but "too much" is when tbe PTO shaft can migrate far enough apart to let the shifter collar/clutch to NOT link the two shafts. It can allow the edge to rub and wear the pin down.

Someone else with more knowledge hopefully will have the answer!
Dale Finch
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Rainman4820
5+ Years
5+ Years
Posts: 19
Joined: Sun Mar 06, 2016 12:37 pm
Zip Code: 76446
eBay ID: Pudgey3
Tractors Owned: 1950 Farmall Cub Demonstrator
Location: Stephenville, Texas

Re: 1950 Cub PTO info

Postby Rainman4820 » Fri May 27, 2016 7:42 pm

Looking for assistance with the PTO shaft....

After searching the site for hours with no luck I decided to post my question. Almost as soon as I posted I searched again and found my answers in a 2011 post. :shock: Thanks and enjoy your Memorial Day weekend!

Disregard..............................................................................................................................................................................................
I decided to go ahead and pull the snap ring and grease retainer to look at the bearing while I had it off the tractor. The bearing is staked in place (this is a 1950 Cub) and there is exactly 1/16" play in the bearing. That doesn't seem like much but when I watch it move it appears extreme. Given that any rearward movement could allow the clutch to disengage from the tranny shaft, are there any issues with additional staking to try to limit this movement? I can't imagine that this would hurt anything, but since I have never done this just want to check with those most knowledgeable. Also, is it possible to just remove the stakes by grinding down and adding a snap ring ? There is a pretty nice collar where the stakes are located that looks like it may hold a ring if I could find the right size. Many thanks

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Glen
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Re: 1950 Cub PTO info

Postby Glen » Sat May 28, 2016 8:42 pm

Hi,
I don't know what the post said that you found. If the play is in the bearing itself, I would replace it with a new bearing, and a new PTO seal, since you have it apart. The new seals are thin compared to the old original seals.
I've never tried to machine, and put a snap ring on a shaft that had the staking originally, I don't know if it works or not. :)

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Dale Finch
10+ Years
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Posts: 6634
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: 1950 Cub PTO info

Postby Dale Finch » Sat May 28, 2016 10:57 pm

I did restake the PTO shaft on one of mine, but did not really have a good tool for it. I used a punch, and did my best. So far...it's still holding, and that was a couple years ago. I do believe someone made a post about milling in a groove for a snap ring, but I think the consensus is that IF you can't get the bearing staked tightly in place, you can order a new PTO shaft WITH the groove for a snap ring. TM Tractors, a site sponsor, sells them:
http://www.tmtractor.com/new/pt/514fp.htm
Dale Finch
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