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John Deere Tractors Discussion Forum
Show Parts for Model:

1949 John Deere Model A

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Larry 2809 C

08-30-2005 16:41:19
152.163.100.197



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My model A runs great at all RPM, except a slow idle. At the idle, i can hear a grinding or some type of noise that seems to be coming from the governor housing. The fan has very little play in it, so i am thinking that the gears driving the fan are ok. Could this be a bearing going bad in the governor? Appreciate any and all thoughts as to what is causing the noise...thanks




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jason r

08-30-2005 19:08:33
12.217.92.123



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 Re: 1949 John Deere Model A in reply to Larry 2809 C, 08-30-2005 16:41:19  
i bet it is the bearing on the flywheel side of the gov. you can pull that cover off without disturbing the timing and check the bearing in the cover. i had the same thing happen on my 38 a and 46 b



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Larry 2809 C

08-31-2005 08:09:20
64.12.116.197



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 Re: 1949 John Deere Model A in reply to jason r, 08-30-2005 19:08:33  
Jason: Thanks for your reply...Can i pull the cover off of the Gov on the flywheel side and not worry about anything popping out? I want to be able to put back on without causing any new problems..thanks for your help. larry



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Dave in SV

08-30-2005 18:37:14
205.188.116.203



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 Re: 1949 John Deere Model A in reply to Larry 2809 C, 08-30-2005 16:41:19  
I read the response from Ben48A... made me think of something that I have questioned about my own '49 A. I hear a "dry rubbing" sound, and I swear it's coming from the distributor cap. My excuse for not investigating is that my tractor starts and runs so well that I don't want to mess with it!

Moral of my story: could the sound you hear be distributor-related?



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Ben48A

08-30-2005 17:12:07
216.220.164.176



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 Re: 1949 John Deere Model A in reply to Larry 2809 C, 08-30-2005 16:41:19  
I have a 48 A and I had that end cover off and the fanshaft off I don't think there are any berings in there except maybe in the fanshaft. I'll check my manuel. But if you take the end cover off make sure you take the mag off before you put the end cover back on. I need a new mag as a result of not taking it off. It pushed out and broke the bottem ear off.



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Dave in SV

08-30-2005 18:44:02
205.188.116.203



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 Re: 1949 John Deere Model A in reply to Ben48A, 08-30-2005 17:12:07  
... you have a magneto on a '48 A? I thought the A went to a distributor when JD added electric to the tractor?

Of course, I could be wrong! My wife tells me that a LOT!



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Island A

08-31-2005 07:55:37
69.251.78.131



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 Re: 1949 John Deere Model A in reply to Dave in SV, 08-30-2005 18:44:02  
The Late A went to distributor ignition as standard equipment but magneto ignition was available as a no-cost option.
Dave



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Dave in SV

08-31-2005 09:14:34
152.163.100.197



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 Re: 1949 John Deere Model A in reply to Island A, 08-31-2005 07:55:37  
... didn't know that!

Is a mag better than a distributor? More reliable, better spark, etc.?



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Island A

08-31-2005 12:39:53
69.251.78.131



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 Re: 1949 John Deere Model A in reply to Dave in SV, 08-31-2005 09:14:34  
I'm not sure, but I imagine a mag was nice to have when your generator and/or battery was bad.
Dave



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Ben48A

08-30-2005 17:22:45
216.220.164.176



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 Re: 1949 John Deere Model A in reply to Ben48A, 08-30-2005 17:12:07  
OOPS! I lied my manuel shows 3 Bearings. 2 on the main shaft and 1 in the crankcase ventliator pump. There is also 1 bearing in the front of the fanshaft. I guess it's been a while since I had that apart.



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