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John Deere Tractors Discussion Forum
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1949 JD model B tractor

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Roy Lemmond

04-17-2007 18:14:50




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One of the clutch adjusting bolts came loose on my tractor and tore up the clutch pulley. I found one with the exact casting number, but when I put it together it locks up the pulley. I have been told that I could bump the shaft through and get a little more end play. This is no small chore as I have to disconnect both ends of the shaft before it will move. Anyone have a different solution?




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HAPPY DEERE

04-18-2007 16:08:33




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 Re: 1949 JD model B tractor in reply to Roy Lemmond, 04-17-2007 18:14:50  
the end of the clutch should he .235 emd play



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john deere 70

04-18-2007 03:52:08




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 Re: 1949 JD model B tractor in reply to Roy Lemmond, 04-17-2007 18:14:50  
If I understand you right, I had the same problem on my JD60 you shouldn`t move the crank . The crank might have to much play when you move the flywheel and move back and forth.I agree with MIKE M. My gear was to far out .



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Roy Lemmondl

04-18-2007 07:42:29




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 Re: 1949 JD model B tractor in reply to john deere 70, 04-18-2007 03:52:08  
Thanks for your response. How did you fix your tractor?



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john deere 70

04-18-2007 10:20:07




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 Re: 1949 JD model B tractor in reply to Roy Lemmondl, 04-18-2007 07:42:29  
I ended up putting my old pulley back on for now till I have time to check out the gear and pulley better.



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Mike M

04-17-2007 19:09:06




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 Re: 1949 JD model B tractor in reply to Roy Lemmond, 04-17-2007 18:14:50  
Or is it your clutch driver going on too far and binding up the clutch from operating ? The crankshaft end should be about 1/4" back in from the edge of the driver if it is flush or sticking out you got problems. Or is the gear not pressed on the back all the way ???



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Roy Lemmond

04-18-2007 17:51:08




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 Re: 1949 JD model B tractor in reply to Mike M, 04-17-2007 19:09:06  
The shaft is about 1/4" back from the edge of the driver. I assume when I tighten the bolt it will bring the clutch driver in some. The gear on the back is pressed in all the way. Thanks for your response.



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Roy Lemmond

04-18-2007 07:49:50




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 Re: 1949 JD model B tractor in reply to Mike M, 04-17-2007 19:09:06  
Thanks for your response. When I put the clutch pulley on the crankshaft and add the thin clutch disk and tighten the clutch operating disk it locks up. I can put my broken disk back on it and it works just fine except I have some broken parts in it and cannot use it. The casting numbers are the same on both pulleys.



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Mike M

04-18-2007 08:11:19




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 Re: 1949 JD model B tractor in reply to Roy Lemmond, 04-18-2007 07:49:50  
Is the thin clutch disk you mention the actual facing disk ? make sure it doesn't drop down out of the recess it should fit into and get wedged up by the clutch driver ( thick cast piece splined inside and is a balance weight )How far back is the crank from being flush with the end of this piece ? If all is fine with these parts and it binds up with the installation of the rest of the clutch facings and plates double check that the cotter pins in the adjusting bolts aren't catching on something as I had that happen before.

How is the dust shield ( tin piece behind the pulley that it slides over ) This may need to be recentered for the new pulley. This can bind them up too. You can leave the bolts kinda loose and slip the pulley over and then use a rubber hammer and tap that shield until the pulley turns freely then pull off and tighten and wire up those bolts.

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Roy Lemmond

04-18-2007 17:59:53




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 Re: 1949 JD model B tractor in reply to Mike M, 04-18-2007 08:11:19  
The thin clutch disk that I speak of is the inner facing disk. The cranks is about 1/4" back before I tighten the bolt. Thanks for your help.



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Roy Lemmond

04-18-2007 08:27:38




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 Re: 1949 JD model B tractor in reply to Mike M, 04-18-2007 08:11:19  
Thanks I will try that. However, when I put my broken pulley on it works just fine.



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