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Farmall M 12 Volt Conversion using a generator

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Red Rider

04-07-2001 18:29:59

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I am considering converting my 1948 Farmall M to 12 volts. I don't particularly want to use an alterator. I would rather use a generator. Would any of you that have done such a conversion using a generator kindly share your experiences or advice with me? Are there any instructions or diagrams out there somewhere that cover this subject?

Red Rider in PA

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ash

10-01-2004 11:46:52

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Re: Farmall M 12 Volt Conversion using a generator in reply to Red Rider, 04-07-2001 18:29:59

have 1962MF 35 gas can some send me a drawing on how to go from a gentorator to a altennator Thank You

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RickB.

04-08-2001 09:23:46

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Re: Farmall M 12 Volt Conversion using a generator in reply to Red Rider, 04-07-2001 18:29:59

You could source a generator and regulator for say a Farmall 450. They were 12v +ground and the parts will bolt right on. Any working lights will need to be changed over, too.

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Lloyd

04-09-2001 06:20:52

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Re: Re: Farmall M 12 Volt Conversion using a generator in reply to RickB., 04-08-2001 09:23:46

My 460 has a 12V neg ground generator. I imagine the 560 has the same thing. It may be a good source of parts, and would allow you to add an electronic ignition in the future if you want.

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Bob M

04-08-2001 07:59:19

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Re: Farmall M 12 Volt Conversion using a generator in reply to Red Rider, 04-07-2001 18:29:59

A 12 volt generator conversion is pretty straightforward and works fine. One option is to have a auto electric shop rework your existing 6 volt generator to 12 volts, then install a suitable 12 volt regulator. 2nd option is to obtain a 12 volt generator and replace the existing 6 volt unit. If you choose this option, make sure you get the matching regulator for the 12 volt generator - a mismatched regulator could ruin your new generator!

Wiring is relatively simple too. You can re-use the existing wiring harness if it's in good shape. Only wiring change is the generator field wire (connected the field control terminal at the light switch on the original 6 volt setup), will instead be connected to the "F" terminal on the new 12 volt regulator.

Also don't forget you will need to add a ballast resistor in series with the ignition coil primary. Or you can replace the existing coil with a 12 volt coil.

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Glenn (WV): Question

04-08-2001 19:20:33

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Re: Re: Farmall M 12 Volt Conversion using a generator in reply to Bob M, 04-08-2001 07:59:19

Bob, in reference to replacing the 6v coil with a 12v coil, would one have to replace the points, too? I've heard of guys burning up points like there's no tomorrow when they converted to 12v and replaced the 6v coil with a 12v coil.

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rich

04-08-2001 21:10:43

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Re: Re: Re: Farmall M 12 Volt Conversion using a generator in reply to Glenn (WV): Question, 04-08-2001 19:20:33

I've changed a SM SC 300 to twelve volts Change the lights to 12 volt put in a resistor for the coil.One could wire up the soloniod for 12 volts while starting with a push button but it should (must) be wired so that it goes through a resistor for running. The starter does not have to be changed but the brushes may not last as long. really swings those engines over and twice as much light also the ground is positive.

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DaveG

02-17-2004 14:17:22

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Re: Re: Re: Re: Farmall M 12 Volt Conversion using in reply to rich, 04-08-2001 21:10:43

You can also buy a 12 Volt coil with a built-in 6 Volt resister, then you dont have to worry about anything in the Distributor..I paid $35.00 for the Coil and $65.00 for a One-wire altenator. but I may put a 12 Volt generator on it to make it
look more original.

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