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Case Tractors Discussion Forum
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DC Chain snap

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Ted

02-06-2004 19:50:48




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I've heard all the statements about the strength of the DC drive chains, and I realize that very few people do serious farming with them anymore, but those chains do snap. I broke two during the early to mid 50's on a 51 and a 52 DC. Here's how it would happen. When plowing with a 3-16's in heavy muck, I'd hit a wet spot and the land wheel would start to slip while the furrow wheel held. This would cause the tractor to virtually cease forward motion, as the land wheel was spinning at 2X speed, but the furrow wheel was still. Then playing with the brakes to get some forward movement back the tractor would move to dry ground and all of a sudden the land wheel would grab hold and "snap" everything would lock up. We were told that an annual tightening of the chain would help eliminate that problem but in the 15 years we ran DC's (had 5 of them + 4 Farmall M's) on 1500 acres). I don't ever remember adjusting the chains, so I guess we had it coming.

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HOOSIER

02-07-2004 20:03:48




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 Re: DC Chain snap in reply to Ted, 02-06-2004 19:50:48  
WE had 49 DC - broke the left chain three times. Last time cracked trans case. That was the end of DC's for us.



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Mike Schotte

02-06-2004 20:00:27




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 Re: DC Chain snap in reply to Ted, 02-06-2004 19:50:48  
It sure looks like you would really have to work at it to break them- those chains are MASSIVE!

(Photo courtesy of CASEPOWER)
third party image

-Schotte



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Case1950

02-06-2004 21:41:44




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 Re: Re: DC Chain snap in reply to Mike Schotte, 02-06-2004 20:00:27  
I figured those chains had to be big, but I never new they would be that hefty looking. Thanks for the picture, now I now whats in there in case I ever have to open one of my DC's.



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ted

02-06-2004 20:11:13




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 Re: Re: DC Chain snap in reply to Mike Schotte, 02-06-2004 20:00:27  
I guess I was just good at it. The mechanic figured that the chain got some slack in it and then when the wheel caught, after spinning at 2X in 3rd gear, with loaded tires, the momentum did the trick. But, I agree, it is amazing how a 40+hp tractor can break a chain like that.



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brent

02-06-2004 19:53:58




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 Re: DC Chain snap in reply to Ted, 02-06-2004 19:50:48  
I have broken the right chain on my SC...so you are not the only one



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todd hamilton

02-07-2004 06:15:22




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 Re: Re: DC Chain snap in reply to brent, 02-06-2004 19:53:58  
Local farmer friend here says they broke a chain in the field on his Dad's SC when he was a kid. When the chain broke it was cold and windy. Since they could not move the tractor they built a big tent around it for shelter while repairing the chain.



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