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Polarizing a generator and Jumping a 6V battery (Soundguy?)

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JSkolits

11-30-2007 11:11:04




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I had posted this question in the body of an older message and thought Soundguy or someone else might see it. But it was there for a while, so I'll post it again.

I bought a new generator from a Ford Tractor supply company. I was told to polarize it I should connect the ground wire to the generator then temporarily touch a wire between the battery terminal and the field lug on the generator. I did this and there was a small spark. Yet, based on a DC voltmeter, the voltage across the battery didn't increase when I run the tractor like it does on a car battery. I'm assuming it's not polarized correctly. Since I have a positive ground, should I polarize it in a different way? I read in another post somewhere to try jumpering between the B and D terminals on the regulator. Yet on this regulator I don't see a "D". There are three connections, they are (From left to right) ARM, FLD, BAT.
So what's the right way to di it?

Also, since it's a 6Volt battery, I expect I can't jump it with a car battery. How do you jump start a 6 volt tractor battery if it goes dead?third party image

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cArNaGe

11-30-2007 11:16:28




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to Dave in Ms, 11-30-2007 11:11:04  

JSkolits said: (quoted from post at 12:11:04 11/30/07)
Also, since it's a 6Volt battery, I expect I can't jump it with a car battery. How do you jump start a 6 volt tractor battery if it goes dead? :?:


I put positive to ground and the Negative right to the starter.

She spins good to.

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John Skolits

11-30-2007 12:11:38




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to cArNaGe, 11-30-2007 11:16:28  
So it won't hurt the starter or any of the electronics if I try to jump start the tractor with a 12V Car battery.



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soundguy

11-30-2007 13:12:25




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to John Skolits, 11-30-2007 12:11:38  
If you use a 12v battery to jump a 6v system, do the following. Make rure the 6v battery has -some- juice... at least enough to make a few sparks.. if so, turn the key on.

Then take your donor battery and jump cables and connect one terminal to the starter lug, and the other side tot he battery. connect the ground of the battery up with the cable, and then with the other end, hook it to tractor ground.. as soon as you make contact.. the starter spins.. DO make sure it is in neutral with the clutch blocked down, and key on, but do not press starter button.

I don't see where you have said what tractor application this is. if this is a NAA/hundred/thousand series, then yes.. it is B-circuit and you polarize by jumping bat to field, with the tractor off.

If this is a circuit, you polarize by jumping bat to arm.. however.. if this is a circuit and you previously jumped bat to field with it all hooke dup.. you most likely smoked your VR...

post back with more info to get better advice.

Soundguy

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John Skolits

12-03-2007 05:46:59




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to soundguy, 11-30-2007 13:12:25  
Sorry. I forgot to give you my tractor info. It's a 1964 Ford 2000, model 21201. Gasoline engine.



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soundguy

12-03-2007 06:47:57




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to John Skolits, 12-03-2007 05:46:59  
Yep.. that's a b-circuit system.

Soundguy



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John Skolits

12-03-2007 07:36:05




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to soundguy, 12-03-2007 06:47:57  
Well, when I get a chance, I'll place a jumber between the proper two contacts on the VR and then see if the voltage across the battery is greater than 6 volts when the tracor is running. Then I'll know it's charging. I assume that's a correct assumption?

Is there a voltage or resistance check with a Volt-Ohm meter I can do to check the integrity of the VR?



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soundguy

12-03-2007 07:50:21




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 Re: Polarizing a generator and Jumping a 6V battery (Soundgu in reply to John Skolits, 12-03-2007 07:36:05  
A full filed test on the genny, and a cutout bypass will tell you if the genny works.. if those tests are fine.. but it won't run with the VR.. then the vr is bad.

Yes.. you could probably check the contacts and coil winding in the vr and the bias resistors.. but it's a long drawn out process that is 'obsoleted' by the 'go / no go' tests that can be done with the vom and some jumper wires..
getting into VR surgery would take a couple written pages to explain to an electrical novice. I'm not up for that kind of typing exercise at the moment. If you are still interested, hit a book store and pick up an 'intor to electronics' / troubleshooting basic ac/dc circuits. Once you master everything in the book, you will know how to disect and check your vr.

have fun!

Soundguy

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