6 volt positive ground AC D14

Richard Woods · Jun 24, 2013

I use an 8 volt battery in the above tractor. What should the 6 volt positive ground voltage regulator be set at. Thanks

notjustair · Jun 24, 2013

Uh oh. This will open a can of worms. I will start - has it been cranking slow? What the reason for the larger battery? Some of the electrical boys will be along. Some of them can be adjusted but I think it is a bit trial and error. They'll fill you in.

Richard Woods · Jun 24, 2013

No, it turns over fine. I have used it that way for years, but now need a new regulator and I have forgotten the setting. I really do not want to go back to a 6 volt battery unless the new more powerful ones will turn it over like the 8 volt.

grs0820 · Jun 24, 2013

Hey there...does it have a delco generator? If so there is a screw on the back between two of the brushes, loosen it up and slide the brushes closer togather, this will increase the voltage, this is what you want. you want it putting out more than battery voltage, what i mean by that is. if your gen is only putting out 6v it cant fill you 8v battery. it may already be able to do this. you will have to check. I wouldn't want you battery over 9.5 v you may not have to mess with the regulator. to check output of the gen disconnect the wires, put a voltmeter on A and ground F. DO NOT DO THIS FOR AN EXTENED PERIOD OF TIME. there will be smoke. and dollar bill falling out of wallet. this is max gen output. Have you started the tractor yet? an what is it doing, guess I should of asked that first. before i went an a rant,

gene bender · Jun 24, 2013

You dont need to re-set the regulator. With the engine running take a voltage check on the ARM post of the gen. Setting the brushes closer makes it put out more amps. Wont hurt to take a hydrometer reading of the cells that will tell you if the batt is charged should read around 1260

Bob Bancroft · Jun 24, 2013

This is a can of worms alright. You've got two opinions on adjusting the generator. I was not aware AC used any adjustable(three brush) generators in tandem with a voltage regulator. (I have seen it on an MF 65)
Seems to me that AC used three brush generators with the hi/lo charge switch and a cut-out.
But then I don't remember when they switched from 6 to 12 volt either.
If you can get 8 volts out of a 6 volt gen., I wouldn't push it much farther than that. Then if it keeps starting you're good.

TractormanNC · Jun 25, 2013

Change it to 12 volt negative ground, put on a delco alternator, bring it up to modern standards and be DONE with it.

JMOR · Jun 25, 2013

(quoted from post at 19:18:23 06/24/13) I use an 8 volt battery in the above tractor. What should the 6 volt positive ground voltage regulator be set at. Thanks

he short & direct answer to your question (without the sermons) is 9.6 volts (2.4v per cell).

grs0820 · Jun 25, 2013

How else are we going to show off our Superior intellect without a good sermon now and again???

6 volt positive ground AC D14

Richard Woods

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notjustair

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Richard Woods

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gene bender

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JMOR

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