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Blew Out The Pully Bearings!


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#1 Ryan313 OFFLINE  

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Posted April 27, 2012 - 07:31 PM

Today I was using my 312-8 to mow the neighbors lawn and the belt popped off, I thought nothing of it. Its a new belt (only 4 acres on it) and i figured it was just stretching. I put it back on and tightened it up and continued mowing. I went a few hundred feet and then something started smoking and squealing, I immediately shut down the tractor and looked at what was smoking. One of the front pulleys for the attach-o-matic was smoking and I didn't even have to look at it before I knew what happened. I looked, and my thoughts were confirmed, the bearings in the pulley blew out and jammed up the pulley. It's an ordinary pulley so I should be able to get one soon. Luckily I was able to use a different neighbors tractor to finish mowing.

#2 olcowhand ONLINE  

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Posted April 27, 2012 - 07:33 PM

Likely it was a cast pulley, but yes, a std pulley will fit the shaft. Common bearings in those too.
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#3 chris m OFFLINE  

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Posted April 27, 2012 - 07:41 PM

Sorry to here that! I hope you can get her back up and running soon. Good luck!
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#4 Ryan313 OFFLINE  

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Posted April 27, 2012 - 07:55 PM

Daniel, what is the difference between a std pulley and a cast one?

#5 Amigatec OFFLINE  

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Posted April 27, 2012 - 08:01 PM

A std pulley is two pieces of steal that are stamped out and welded together, a cast pulley is a one piece pulley cast from steal or iron.
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#6 Ryan313 OFFLINE  

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Posted April 27, 2012 - 08:05 PM

I think mine was std then, I think it had spot welds on the sides. I'm not 100% sure but I'm pretty confident thats what it was.

#7 olcowhand ONLINE  

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Posted April 28, 2012 - 07:22 PM

I think mine was std then, I think it had spot welds on the sides. I'm not 100% sure but I'm pretty confident thats what it was.


All the earlier WH decks had cast pulleys on them. Yours is an early 80's model, so likely is stamped steel.
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#8 Ryan313 OFFLINE  

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Posted April 28, 2012 - 07:41 PM

Mine is an '89. I looked at it again and it is welded together.

#9 jusjeepn OFFLINE  

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Posted April 28, 2012 - 10:28 PM

If I'm understanding your description correctly, it's one of the pulleys that is in mule drive? One flat idler and the other a std "V" belt pulley. Both are stamped and spot welded pulleys. If you drill out the spot welds, the bearings are replaceable.... or you could just get another mule drive. They are a dime a dozen around here. it amazes me how much they go for on ebay.
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#10 Ryan313 OFFLINE  

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Posted May 13, 2012 - 08:45 AM

I finally got a pulley yesterday... 36 bucks! I thought this would be a cheap $5-10 part! Oh well, at least I have what I need and can get back to mowing with it.

#11 MH81 ONLINE  

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Posted May 13, 2012 - 08:53 AM

Ryan, better scratch at the pain and see what kinda gold it's made of. Wow, $36? I need two on my Craftsman deck, hope they're more reasonable...

Have fun mowing today.
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#12 Amigatec OFFLINE  

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Posted May 13, 2012 - 09:58 AM

The cast pullies for a Cub Cadet Mule Drive are $82 apiece!!! I used the stamped steel ones on mine.




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