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Case Tractors Discussion Forum
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Re: Case CrankShaft 1070

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1370rod

12-22-2012 20:33:25
174.125.224.243



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Believe it or not the 1070 and 2290 use the same crank, also known as the small journal crank. The large journal crank will not fit in those blocks. These are found in 1370, 2390 and larger tractors. Rod.




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Jpb1070

12-23-2012 05:52:51
166.205.55.18



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 Re: Case CrankShaft 1070 in reply to 1370rod, 12-22-2012 20:33:25  
Are these small journal cranks very strong? This is in a pulling tractor, and it looks like both engines I have to work with are small crank engines.



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1370rod

12-23-2012 12:06:16
174.125.224.243



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 Re: Case CrankShaft 1070 in reply to Jpb1070, 12-23-2012 05:52:51  
I have seen them break in farm tractors but only after a repair. That is a question best posted again for the pulling guys, Rod.



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RGMartin

12-23-2012 13:38:02
98.16.79.213



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 Re: Case CrankShaft 1070 in reply to 1370rod, 12-23-2012 12:06:16  
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What sort of repair? Grinding the wrong radius?



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1370rod

12-23-2012 13:57:47
174.125.224.243



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 Re: Case CrankShaft 1070 in reply to RGMartin, 12-23-2012 13:38:02  
After a con-rod brg spun and damaged the journal. Our local machine shop sends them someplace,where i don't know. They comeback looking like new. In past years I had this done to 3, after a couple hundred hrs everyone broke in the crank throw next to the repaired journal. Ever since, about 20 yr ago, when I get a crank damaged like that they go in the junk. I hate like hell to do that but I can't afford to redo them. I just tossed out one out of a 1070, nice looking crank but one damaged journal, I have no other choice, Rod.

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mEl

12-23-2012 14:10:48
141.151.107.238



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 Re: Case CrankShaft 1070 in reply to 1370rod, 12-23-2012 13:57:47  
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I totally agree Rod, I have seen the same thing happen several times. Crank welders can do a beautiful job at rebuilding the journal but getting the tempering back to new is imposssible for the average rebuilder. There are various methods but with mixed sucess. It's just not worth the risk.

mEl



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