m farmall alternater

ohiojim · Jan 3, 2014

what are you guys using when you change over to 12 volt,..don't want to cut the hood

David G · Jan 3, 2014

I think a delco will fit under the hood, Charlie Updike (Charlies Repair) has nice kits with custom brackets, stay away from universal brackets.

Bob M · Jan 3, 2014

The Delco 10SI is the most commonly used alternator for conversions. It is available everywhere, inexpensive, reliable and fits under the hood of the M with room to spare.

Note the 10SI was used on virtually every GM car and light truck from the mid-70's through mid-'80's

rustyfarmall · Jan 3, 2014

The Delco alternator that someone installed on my M did not fit completely under the hood. When I investigated, I found they had used the aftermarket, universal mounting bracket, and they had also used a belt that was too long. Since I didn't have an original generator mounting bracket, I modified the existing universal bracket so the alternator sat a little higher, and then I was able to use an original, replacement generator belt. That Delco alternator now sets right where it is supposed to set, the belt is tight, and it clears the hood with room to spare.

Allan in NE · Jan 3, 2014

Generator off a 560 diesel.

Allan

mkirsch · Jan 3, 2014

You don't even need a special bracket.

Just flip the stock bracket over, and mount the new alternator AHEAD of the bracket, using a 3/8" all thread running through both holes in the bracket.

You may need to shave 1/4" or so off the rear of the alternator's bottom mounting lug, depending on the alternator you get. Basically you just cut it at the casting line with a hacksaw.

Icuby · Jan 3, 2014

I have been useing the Hitachi alt. Just some smaller.

DeltaRed · Jan 3, 2014

I use a 'Delcotron' with a homemade bracket.At the time I 'converted' my tractor(s),I stripped out the entire wiring system and built a new one.

old · Jan 3, 2014

I have done more then one using the common Delco alternator. You just need to flip the bracket and use a shorter belt and it can be done pretty easy. Last one I did I used the same alternator as is used on my 1980 Chev pick up

rankrank1 · Jan 3, 2014

Use the Hitachi. It wires up basically the same as the Delco 10SI and is quite a bit smaller in size so fits under the sheet metal much much better. About $45 to $50 or so from Advance, O'Reilys, Autozone with lifetime warranty.

Search the archives and it will tell you the vehicle to look up to obtain it. I think it was a 1980's Dodge D50 pickup which was a foreign built truck imported for Dodge.

rankrank1 · Jan 3, 2014

I had the truck wrong in my previous post. It is a Nissan B620 or B720 from the 1970's. Hitachi 14231 is what you want. Here is a thread with some pics.

http://forums.yesterdaystractors.com/viewtopic.php?t=903722&start=0&postdays=0&postorder=asc&highlight=farmall+hitachi+alternator

Pete_5959 · Jan 3, 2014

OJ,
I used a generator off a MD. Installed american made VR and changed out my lamps on a 53 SM. Looks original and really works well. Just keep eye on ebay for a 12 volt genny.

2 pipe · Jan 3, 2014

I always use the GM one wire alternator and flip the original bracket over, it works great. They also make that same kind of alternator in a smaller case which will give you just a little more room. Either one will work on an M or H though. Good luck!

Janicholson · Jan 3, 2014

The Hitachi is seriously easier to fit. The Use of 1/4" female insulated spade terminals works on the connections. The S terminal connects directly to the big terminal with a short wire, 14 gauge is OK. the L terminal connects to the ignition through a marker lamp (not LED style)or a 10 ohm 5 watt resistor, or a diode with the band toward the alternator. It should get power from the ignition switch, full bat voltage. The big terminal attaches to the amp meter using 10 gauge wire. (reverse the leads on the amp meter, hook the battery up negative ground, and replace the light bulbs.) I like to put a 40 amp fuse, or fuse link, in the wire going to the Battery from the amp gauge to protect things if connections are made wrong when jumping, or the alt fails. Jim

Redturbo · Jan 4, 2014

Here is a Hitachi on a SW6, cousin of the M. Its from CharileU.

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rustyfarmall · Jan 4, 2014

(quoted from post at 10:33:13 01/04/14) Here is a Hitachi on a SW6, cousin of the M. Its from CharileU.

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I like it. If you're going to go out and buy a new alternator anyway, you may as well buy one that fits as nice as the Hitachi in the pictures.

Redturbo · Jan 5, 2014

Thanks Rustyfarmer. I like the size of the Hitachi alternator. It puts out 35 amps, just right size for the letter series tractors. Since I have 3 led lights that draw less than 1.5 amps when on. Only use them when plowing snow in the dark. Not sure what the ignition system needs, but cant be that much. As converted it to electronic ignition. After starting the engine, the amp gauge is showing roughly 15 amps. Less than 10 mins, battery is topped back up & gauge goes to 0ish. Another reason I like it, rpm range is so low on these tractors. 400 to 1400, it starts charging without reving up the engine. I have delco on the IH 560D, it wont start charging till rpms are over 1200. There is nothing wrong with delco, been around for along time. I just choice to be different is all. Thanks to CharlieU, met him @ RPRU 2012. Now have got 3 kits from him.

m farmall alternater

ohiojim

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David G

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Bob M

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rustyfarmall

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Allan in NE

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mkirsch

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Icuby

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DeltaRed

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old

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rankrank1

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rankrank1

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2 pipe

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