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Farmall & IHC Tractors Discussion Forum
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Changing H to 12 Volt without cutting hood

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David in Texas

12-08-2003 09:12:19




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I don't think the hood on an "H" is large enough to add an alternator in the same location. It is on my "M". Should I mount it lower or on the other side? I will not cut the hood! Do you have any suggestions.




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ron

12-08-2003 22:54:50




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 Re: Changing H to 12 Volt without cutting hood in reply to David in Texas, 12-08-2003 09:12:19  
YOU CAN USE A 12 VOLT GEN. FROM A 1965 FARMALL CUB, IT WILL FIT THE BRACKETS, AND USE THE SAME BELT.THE ONLY MOD YOU NEED TO DO IS WELD A BOLT ONTO THE END OF THE SHAFT SO YOU CAN PUT A NUT ON THE H PULLY,AND YOU HAVE TO GET A REGULATOR FOR 12 VOLT. I DID THIS TO MY SUPER H, AND IT LOOKS JUST LIKE A 6 VOLT TRACTOR.



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Van

12-08-2003 21:34:22




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 Re: Changing H to 12 Volt without cutting hood in reply to David in Texas, 12-08-2003 09:12:19  
I have a 1955 300 that was originally 6 volt. I has a alternator on it that my dad put on in 1982. He just turned the lower mount around and made up a new adjustment strap for the top and used a shorter belt. The hood is uncut and the Delco alternator is tucked up inside.



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Nebraska Cowman

12-08-2003 16:02:30




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 Re: Changing H to 12 Volt without cutting hood in reply to David in Texas, 12-08-2003 09:12:19  
I have an idea most hoods are cut because the guy didn't want to buy a shorter belt.



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wh

12-08-2003 11:29:51




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 Re: Changing H to 12 Volt without cutting hood in reply to David in Texas, 12-08-2003 09:12:19  
have installed several. use a idler pulley and place your alt tight against valve cover. idler pulley lets you adjust belt. link to pic. wade



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Ron 1456

12-08-2003 14:59:16




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 Re: Re: Changing H to 12 Volt without cutting hood in reply to wh, 12-08-2003 11:29:51  
When I converted our SM-TA to 12 volt I used a Delco altrenator with internal regulator like you did with the idler from an after market auto AC kit. I used the normal M generator belt. On the SM that I converted I went to a salvage yard and got a 12 volt generator and regulator. Used the original starter on both.



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Little John

12-08-2003 09:20:21




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 Re: Changing H to 12 Volt without cutting hood in reply to David in Texas, 12-08-2003 09:12:19  
A delco will fit under there, but it's a tight fit.

I have one on my H. You can also get a slightly smaller alternator. Forum contributor Big John recently said he used this one:

It is a Hitachi #14231 which was used on 1978-79 Nissan 620 pickup with a 2 liter engine and a 1980 Nissan 720 pickup with a 2 liter engine. At NAPA it is part #2138130 - cost is right at $50 + core.

I wouldn't cut that hood either.

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Doug in OR

12-08-2003 12:25:44




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 Re: Re: Changing H to 12 Volt without cutting hood in reply to Little John, 12-08-2003 09:20:21  
A Nippondenso from a junked mid-80's Toyota will work too. It is about 2/3 the size of a Delco. It has less charging capacity, but more than enough for your conversion. Wiring these alternators is not at all difficult - they may label the individual terminals something different, but they work the same as a Delco.



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Dave_Id

12-08-2003 09:18:16




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 Re: Changing H to 12 Volt without cutting hood in reply to David in Texas, 12-08-2003 09:12:19  
IT'll work, albeit a very tight fit. Smaller belt was required. I used the one wire Delco alternator on mine, but at the time I didn't know enough about the 6 volt problems before I switched it over, I wish now I would have left the 6 volt system on it... check archives on this subject..



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