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Farmall & IHC Tractors Discussion Forum
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Alternator Conversion

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Wicksfield

03-21-2006 07:24:32




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I've just converted my M from 6V+grd. to 12V-grd. using the alternator kit purchased on this site. The instructions indicate that it may be necessary to run the tractor at full throttle to excite the regulator. Well, sometimes this works, sometimes it doesn't. When it doesn't work, I momentarily run a jumper from the No.1 terminal over to the Bat. terminal to excite the regulator. This is a pain. What else can I do?

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charles todd

03-07-2009 23:08:21




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 OT: Good find! in reply to  



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CEB

03-21-2006 08:27:59




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 Re: Alternator Conversion in reply to Wicksfield, 03-21-2006 07:24:32  

You must have gotten a one wire setup with a "self exciting" alternator. That is the problem that you get with the older low RPM tractors and the one wire setup.

Too bad you already bought the setup. A better way would be just to go to an auto parts store and get a Delco Remy 10 SI car alternator. They are cheap to buy. Just wire it up with a standard three wire setup and not the "self exciting" business. The archives on this site have wiring diagrams for this. Its not that tough to do.

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arod

03-21-2006 08:53:48




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 forget the 10si in reply to CEB, 03-21-2006 08:27:59  
10si alternator is a monster to fit under the hood. Get a '76 honda civic alternator. they are small and cheap.



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T.B.W.

03-21-2006 08:16:55




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 Re: Alternator Conversion in reply to Wicksfield, 03-21-2006 07:24:32  
I had the same problem. I went to the hardware store and got a larger 1/2 inch pully and took it to a machine shop and had it cut to fit the alternator. Works great and will work at 1/3 throttle.



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adlm

03-07-2009 09:43:53




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 Re: Engine Overhaul in reply to P and R Pete, 03-07-2009 07:12:20  
Man, you just rained all over my parade. It"s ok though, I still think I"m up to the challenge. At least, I think I will be by the time I start. I can be a bit impulsive, but i can also keep my cool. It sounds like I"m going to do just fine, with a little help from my friends. I do have a couple of people who know engines really well that I could turn to in a bind.



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arod

03-21-2006 07:52:45




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 Re: Alternator Conversion in reply to Wicksfield, 03-21-2006 07:24:32  
Purchase a regulator that is more in tune with your alternator. I have converted an M and an H. Not using the kit from this site. But just from Bob Melvilles wiring diagrams and some common sense. I always purchase an alternator with external regulator, then purchase a new regulator and coil. Basically I strip the tractor of all wiring and electrical systems and start from scratch. Oh, and I ditch the worthless ammeter. Put in a junction block in its place, and install a Voltmeter to let me know how the 12 V system is charging. My advice. Start from scratch and do not re-use existing components. Just my .02.

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