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Tractor Talk Discussion Forum

Farmall M crankshaft

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Larry806

12-27-2005 11:49:37




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Will the crank from a M fit a Super M? I know where there is a M&W crank in a M I"m getting a SMTA that needs rebuilt Thank you for any help Larry




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DWV

12-27-2005 16:02:53




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 Re: Farmall M crankshaft in reply to Larry806, 12-27-2005 11:49:37  
Two journal size cranks were used.most M had small journal but some later ones near end of M production were the same journal size as SM through 450.The cranks can be interchanged using the rod and main bearings to match crank.The bearing bores in blocks and rods are the same.IH used thicker bearings with the smaller journal and thiner ones with larger journal crank.



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Larry806

12-27-2005 16:38:39




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 Re: Farmall M crankshaft in reply to DWV, 12-27-2005 16:02:53  
Thank you Do you know the part numbers on the cranks? Or what the two journal sizes are ? Larry



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DWV

12-27-2005 18:44:55




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 Re: Farmall M crankshaft in reply to Larry806, 12-27-2005 16:38:39  
Standard size IH cranks unless turned later ,# 45571-D to DC small journal,mains 2.7475 to 2.7485, crank pin 2.4975 to 2.4985 . Cranks # 45571 DD and DE large journal,mains 2.8075 to 2.8085, crank pin 2.5475 to 2.5485.



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Larry806

12-28-2005 11:31:05




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 Re: Farmall M crankshaft in reply to DWV, 12-27-2005 18:44:55  
Thank you for your time and help I hope to do the same for you sometime Larry



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