Charging problems (1963 Ford 2000 6 volt negative ground)

Buzzard67 · Sep 23, 2020

I have a 1963 Ford 2000 tractor, 4cyl gas, 6 volt negative ground. It was intermittenly failing to charge the battery (red light sometimes came on and stayed).

Tapping on the regulator would make it work again for a few minutes, so I tried a replacement regulator... But the replacement doesn't charge at all. Tried polarizing the generator, still no charge.

I did some bench tests on the regulators, using a power supply across "arm" and "gnd", and an ohmmeter between "arm" and "fld"...

On the old regulator, the regulating contact opens at 8.03v, closes at 7.99v (that's a bit high, isn't it?). The cutout closes at 6v, opens at 5.5v (which i'm thinking is probably reasonable).

On the replacement regulator, the regulating contact opens at 5v, and closes at 3.3v (which I don't see how that's supposed to regulate a 6 volt battery). The cutout closes at 5.4v, opens at 1.8

Can someone verify whether a 6volt type "B" regulator should act like that at all? As differently as the two units act, it looks like I may have gotten the wrong regulator, or a defective one.

Generator passes its "motoring" test.

If I have to reorder, I want to be sure I'm not getting the wrong one again. Are there more tests I should do on the tractor first? (did some tracing on the wiring with an ohmmeter, but couldn't find a diagram online for this particular model)

Thanks in advance for any help..

crankyfranky · Sep 24, 2020

(quoted from post at 19:14:46 09/23/20) I have a 1963 Ford 2000 tractor, 4cyl gas, 6 volt negative ground. It was intermittenly failing to charge the battery (red light sometimes came on and stayed).

Tapping on the regulator would make it work again for a few minutes, so I tried a replacement regulator... But the replacement doesn't charge at all. Tried polarizing the generator, still no charge.

I did some bench tests on the regulators, using a power supply across "arm" and "gnd", and an ohmmeter between "arm" and "fld"...

On the old regulator, the regulating contact opens at 8.03v, closes at 7.99v (that's a bit high, isn't it?). The cutout closes at 6v, opens at 5.5v (which i'm thinking is probably reasonable).

On the replacement regulator, the regulating contact opens at 5v, and closes at 3.3v (which I don't see how that's supposed to regulate a 6 volt battery). The cutout closes at 5.4v, opens at 1.8

Can someone verify whether a 6volt type "B" regulator should act like that at all? As differently as the two units act, it looks like I may have gotten the wrong regulator, or a defective one.

Generator passes its "motoring" test.

If I have to reorder, I want to be sure I'm not getting the wrong one again. Are there more tests I should do on the tractor first? (did some tracing on the wiring with an ohmmeter, but couldn't find a diagram online for this particular model)

Thanks in advance for any help..

i too have a 63/64 model 2000 with the same charging system as yours. i tested the vR on the tractor with a fluke. mine opens and closes in pretty close spec to your original VR.

Buzzard67 · Sep 24, 2020

(quoted from post at 13:07:31 09/24/20)
i too have a 63/64 model 2000 with the same charging system as yours. i tested the vR on the tractor with a fluke. mine opens and closes in pretty close spec to your original VR.

That makes me think even more that I bought the wrong or a defective replacement regulator. Just to be sure, is it this one for the 6v negative-gnd?

https://www.yesterdaystractors.com/Ford-2000_Voltage-Regulator-6-Volt_FAG10505A.html

If so, then I got a defective one, and I'll re-order. If not, can you advise which one do I need?

JMOR · Sep 25, 2020

(quoted from post at 21:13:54 09/24/20)

(quoted from post at 13:07:31 09/24/20)
i too have a 63/64 model 2000 with the same charging system as yours. i tested the vR on the tractor with a fluke. mine opens and closes in pretty close spec to your original VR.

Click to expand...

That makes me think even more that I bought the wrong or a defective replacement regulator. Just to be sure, is it this one for the 6v negative-gnd?

https://www.yesterdaystractors.com/Ford-2000_Voltage-Regulator-6-Volt_FAG10505A.html

If so, then I got a defective one, and I'll re-order. If not, can you advise which one do I need?

ooks like right one to me. There was a time in past where VRs cared about pos vs neg ground, but today those are very rare if still available at all.

Buzzard67 · Aug 15, 2021

Thanks for the advice; I went ahead and bought the regulator(back in October 2020), and this newest one charges. I still have to tap on it every once in a while, which makes me wonder about the quality, but at least it works (which that [b:db7c6bf279]other[/b:db7c6bf279] new one wouldn't at all), and it's a whole lot better than the old one I had to tap on every minute or two.

Charging problems (1963 Ford 2000 6 volt negative ground)

Buzzard67

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crankyfranky

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JMOR

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