New Farmall Cub - Belly Mower Questions

[drober87]

Hello Farmall community. I'm new to the Farmall Cub thing, and have some questions I'm hoping you all can help with. My father-in-law recently purchased a 1949 Farmall Cub with a belly mower, and it's become somewhat of a joint effort to get it in proper running order. The Cub fires right up and drives well. Our issue has become the belly mower. The blades engage and it will mow, but increasingly the belt slips off, and occasionally the PTO pulley comes off as well.

So, I guess my first question is, what type of belly mower do I have? The mower doesn't seem to have any identifying markings left. Measuring the deck of the mower, it comes to just about 45 inches. From browsing around the forum, I'm thinking it is an International/Danco C-2, but would be interested in what you all have to say.

Given that the belt keeps coming off, my first thought is to get a new belt, as the old one has some rough spots and I have no idea how old it is (it's definitely been used). Assuming the mower is the C-2, would I be correct that the belt is a B136?

The next issue is the PTO pulley that is coming off. The pulley that's on there is just shy of 8 inches. However, it says "Worthington" on it, so I'm thinking it may not be the original/correct pulley. In any event, do we think that replacing the belt will help keep the pulley in place? Also, the PTO shaft has a small hole running through it, which I assume is for some sort of retaining pin. However, I cannot get the current pulley to go on the shaft far enough to access the hole (the pulley just covers it up). Am I correct that there should be some sort of retaining pin running through the PTO shaft in order to keep the pulley in place?

Thanks in advance for your help. I'm very much a novice at the whole tractor thing!

[Pap]

Welcome dorber. I can't help you but you have come to the right place to get help. There is a lot of people on here that knows what you are trying to find out about. I'm sure someone will have the info you are looking for.
Good luck with your project.

[Pap]

My bad. Welcome drober.

[Gary Dotson]

Your pulley is what is referred to as a taper lock pulley. The pulley is slid onto the pto shaft, to the proper location, to align with the pulleys on the mule drive. You then tighten the three small bolts that you see on the face of the pulley. This pulls the 2 units of the taper together, locking the pulley in place. This may help keep the v-belt on but from your description, you’ll likely have to replace it. Also, make certain the mule drive pulleys are in good condition and that the bearings are good in both.

[Cubfriend]

While your PTO pulley is off, you may want to take it apart and clean any rust off the tapered bushing and bolts and reassemble clean parts and snug it up pretty well. If the bolts are marginal get some new grade eight bolts. Some anti seize on the bolts could help later on if it needs to come apart again.

[Rick Spivey]

You may not need this information right now if your pulley is loose, but you use two of those small bolts in the "extra" 2 holes to "push" the tapered part out of engagement with the pulley sheave. This is how you remove the pieces from your PTO shaft. The tapered part can still be a little difficult to remove depending on rust and dirt, etc.

[Dale Finch]

While your PTO pulley is off, you may want to take it apart and clean any rust off the tapered bushing and bolts and reassemble clean parts and snug it up pretty well. If the bolts are marginal get some new grade eight bolts. Some anti seize on the bolts could help later on if it needs to come apart again.

If you don't already know, to remove the PTO Pulley, remove the 3 bolts...but be careful, as they are small & easily broken off if you force them. Spray them with a good penetrating oil, and be very gentle with them...tiny movements at first to get them free. Then use 2 new screws in those two OTHER holes, & gently screw them down evenly, a bit at a time. They should eventually push the pulley forward off the bushing. Then you can remove both pieces.

And from the HOW TO section here, this will probably explain it a lot better!!

http://farmallcub.com/phpBB2/viewtopic.php?f=54&t=42617

Finally, WELCOME!!

NOTE:. Guess I type too slow...Rick obviously gets to the point quicker than I!!

[tst]

that is a IH/Danco C2, also it should have belt guides that are missing by the pulley on the deck to keep the belt from jumping off, if you down load the instructions from this server for the mower you will see that, not hard to make
and the PTO pulley make sure all the splines are not all worn out also

[Glen]

Hi,
The PTO splines need to be in good condition for the tapered style of pulley to lock on the splines.
If the splines are worn it might be a problem.

The small hole through the PTO shaft is used for a cotter key on Cub 22 Mower drive pulley. That is the side mounted sickle bar mower.
I don't think rotary mower drive pulleys that are tapered use the hole, but I haven't seen all of them.

Below is a pic from TM Tractor of the Cub 22 Mower drive pulley. The larger hole is for a 3/8" bolt that tightens the pulley on the PTO shaft.

Below is the C-2 Mower operator's manual.

http://farmallcub.com/rudi_cub/www.clea ... index.html

[Stanton]

Welcome to the Forum!

Take some time and read through a few threads to acquaint yourself with the Forum:

• Welcome Wagon
• How to Upload Pictures to a Post
• Forum Picture Posting And Other Interesting Things You Can Do
• Using the Forum

After you’ve logged your 2nd post on the Forum, you'll have access to the all the PDF Manuals on this site. There’s a few ways to do that:

• From a desktop or laptop, go to "Quick Links" in the upper left corner of your screen. Hit that and a pull-down appears where you'll find "PDF Manuals".
• You can also go to “Cub Info” in the upper toolbar, then hit “Rudi’s Manuals”. From there, you can access a variety of information.
• If you're using a phone, go to the "Links Directory" (second category down the main page). Once in "Links Directory" , scroll down to the second section "Tractor Parts & Manuals" and you'll find them there.

You'll be able to download an Owner's Manual and any service manuals that interest you. Implement Manuals are also available, including the IH/Danco C-2 mower manual.

There are a lot of good threads dealing with Cub repair and maintenance in the How To Forum. Located here: http://farmallcub.com/phpBB2/viewforum.php?f=11

We’d encourage you to take the Safety Test located in the Safety Forum: http://farmallcub.com/phpBB2/viewtopic.php?f=33&t=68084

Take some pictures of your tractor and post them, we’d like to see them.

Remember:

• Pictures are limited to 500 KB file size. Use an image reducer app or program to downsize pics.
• When you have a specific question, start a new thread in the appropriate sub-forum.
• Before posting, use the Preview button before hitting Submit--it'll show you exactly what your post will look like, including pictures.
• When adding your comments to a thread, be sure to look at the date of the last poster. If it’s more than a 6 months old, the posters are probably not going to see it. Consider starting a new thread.

Glad you joined us.

[DrLandraceFarmer]

Hi drober87, I’ll give my two cents I suppose. I have a 49 cub and run a C2 mower. Love this thing! I mow all the roads, yard, and around the lake on our (now retired) farm. This mower set up is perfect for the yard and the more challenging areas as well.

To your issue: the PTO pulley I have is exactly what Glenn shows from TM Tractor. I run a B136 belt and it works perfectly. I believe the manual calls for a 1/2x138 belt. Based on the forum I’d say most people run a B136 (5/8x139), more durable and has the same 136 ID as the original. Certainly, that large pulley you have would change the belt size, I’d assume.

I recently found myself out to mow and the belt kept slipping off. I tightened the belt, checked everything and it just kept flying off as soon as I’d engage the PTO. The belt was just worn out. Bought a replacement and a spare to hang on the wall and back in business!

I think once you sort out your mower setup and get a fresh belt on it you’ll be mowing with ease! Good luck

[Radec Aksarben]

that is a IH/Danco C2, also it should have belt guides that are missing by the pulley on the deck to keep the belt from jumping off, if you down load the instructions from this server for the mower you will see that, not hard to make
and the PTO pulley make sure all the splines are not all worn out also

I really like those decals. Did you have those made or are they available somewhere?

[Radec Aksarben]

Hi drober87, I’ll give my two cents I suppose. I have a 49 cub and run a C2 mower...

To your issue: the PTO pulley I have is exactly what Glenn shows from TM Tractor. I run a B136 belt and it works perfectly. I believe the manual calls for ...
...Good luck

I'd suggest sticking with the 8" sheave to keep the correct blade speed. Having a smaller driver wouldn't hurt anything since it wouldn't overspeed, but I'm skeptical the cut would be as clean.

I found that having the tension side mule idler as low as possible (so the left side idler would be higher) helps keep the belt running well on the drive sheave.

[Don McCombs]

that is a IH/Danco C2, also it should have belt guides that are missing by the pulley on the deck to keep the belt from jumping off, if you down load the instructions from this server for the mower you will see that, not hard to make
and the PTO pulley make sure all the splines are not all worn out also

I really like those decals. Did you have those made or are they available somewhere?

Tim makes those decals himself.

[Rick Spivey]

Simple check that works for me. The belt should be as vertical as possible between the PTO and mule drive pulleys, and as horizontal as possible between the mule drive pulleys and the spindle. That implies that the mule drive pulleys are at the same height. If your belt was short then having the left side horizontal and cheating the right side might be a better way to keep the belt on.