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Farmall & IHC Tractors Discussion Forum
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converting to a 12 volt system

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Waynesen

03-31-2005 17:23:17




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I installed a 12 alternator on a "C" farmall with a magneto using Robert Melville guidelines. It has a switch and a warning light. It has worked for several years without any problems. I decided to use the same system on another tractor(it's red) because I didn't like the way the 6 volt starter was working after I had it overhauled. This tractor has a distributor. It charges OK but the new alternator squeals when charging. Tried two alternator. Took the second one back and it bench checked OK. It doesn't squeal when it isn't charging, just when I engage the sw or increase RPM. The amp gauge shows 5 to 10 amps which is not over charging. I did soap the belt just in case that was the problem. I don't know what the problem is and just hope I don't burn up the alternator. I welcome any comments.

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Allan in NE

03-31-2005 17:26:46




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 Re: converting to a 12 volt system in reply to Waynesen, 03-31-2005 17:23:17  
Hi Wayne,

Tighten your belt til she bellers for mercy. We were just talkin' 'bout this a week or so ago.

Allan



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Doug in OR

03-31-2005 17:50:52




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 Re: converting to a 12 volt system in reply to Allan in NE, 03-31-2005 17:26:46  
Do as Allen says. But check the alternator pulley too. It may be worn. And the belt? It sounds like a classic loose belt problem, but look at the belt and pulley. Oh yeah, I don't recall if it was a new or used alternator, but worn alternator bearings can cause this problem too.



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Allan in NE

03-31-2005 18:04:05




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 Re: converting to a 12 volt system in reply to Doug in OR, 03-31-2005 17:50:52  
Hey Doug!

Fancy meetin' you here! :>)

I disagree..... .(so, what else is new)? :>)

Bad bearings don't squeal, they growl. Belts and pulleys squeal. (Couldn't let ya get away without throwin' one at ya). :>)

Allan



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Doug in OR

03-31-2005 21:17:19




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 Re: converting to a 12 volt system in reply to Allan in NE, 03-31-2005 18:04:05  
I know that! But.. a bad bearing puts lots more load on the belt - possibly causing it to squeal. Yeah, I still lurk here, Allan. :)



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Yugrotcart

04-01-2005 12:09:06




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 Re: converting to a 12 volt system in reply to Doug in OR, 03-31-2005 21:17:19  
I have heard using a cast pulley versus a pressed metal pulley on the alternator is less likely to slip..... .....



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