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1 wire alternators and internal voltage regulators

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MattMo

03-03-2003 07:40:16




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I purchased a '41 9N with supposedly a 12 volt conversion in place. As I look over the wiring I do not see a voltage regulator in place and I was wondering how can I be sure the alternator has an internal votage regulator? I hate to question any ones character, but as I look at other parts of the tractor i'm finding items just thrown together to give the appearence that problems have been corrected and I'm worried that this guy slapped an alternator on, hooked up a few wires and called it a 12 volt conversion. Any help would be appreciated.

MattMO

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Jim Cox (SW Missouri)

03-03-2003 10:05:17




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 Re: 1 wire alternators and internal voltage regulators in reply to MattMo, 03-03-2003 07:40:16  
if we're talking DELCO alts here, look for the spot where the plug is covered, or even bare. the terminals will be - -, and not I I. Some early alts came in the late case, but had the I I style plug on the side. Either way, find somebodys diagram and make it a three wire. And DO take it somewhere and have it checked. My 9N had a delco on it when I got it, ran fine till I put headlights on. Turns out the alt is bad, and I don't know that it was ever good, but a tractor that can run three months with a bat alt is still a great tractor. look for pics of a 12V 8N generator conversion SOON

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Dell (WA)

03-03-2003 08:50:10




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 Re: 1 wire alternators and internal voltage regulators in reply to MattMo, 03-03-2003 07:40:16  
Matt..... ...from your comments, it sounds like you are electrically challenged. Take your alternator into your local autoparts house and ask for a "free" checkout. They can tell eazy.

Are you having electrical problems or just being intellectually curious?..... ....Dell



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MattMO

03-03-2003 08:53:51




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 Re: Re: 1 wire alternators and internal voltage regulators in reply to Dell (WA), 03-03-2003 08:50:10  
No electrical problems yet as the tractor is torn down for a paint job. Just intellectually curious how a person can tell if an alternator, that I know nothing about, has an internal voltage regulator.

MattMo



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Gary

03-03-2003 21:05:28




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 Re: Re: Re: 1 wire alternators and internal voltage regulators in reply to MattMO, 03-03-2003 08:53:51  
You have already seen the difference in the early and late alternators. The only difference in an electrically excited alternator and Self exciting (one wire) alternator is the internal regulator. The self excited part # will begin with SE and the elctrically excited will begin with EE. By the way, I have run a one wire alternator on my 68 GMC for 15 years. I left my original voltage regulator in place, broke the regulator/idiot lightplug apart, plugged the idiot light wire to the "R" position on the alternator. I have the idiot lights now and my tem,perature light and brake warning light as well as my idiot light work.

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