TEA 20

miner09 · Jun 12, 2016

Have friend that has TEA-20--1948--replaced new 6 volt battery negative ground started right up. Noticed battery wrong. Then turn battery around and generator will not work. Polarized generator--then polarized regulator still would not work. Replaced Lucas regulator with Delco still would not charge. Only charging 1 volt. Generator worked perfect before replacing battery. Need help. What do you think is wrong?

Charles in Aus. · Jun 13, 2016

Is the bulb in the ignition light working Miner ? Doesn't charge when this has blown .

Steve@Advance · Jun 13, 2016

Have you tested the generator?

Is the regulator compatible with the generator? If it has a Lucas generator, the field is grounded, if Delco the field needs to be grounded to charge. They take different regulators.

If all that checks out, be sure the regulator base is grounded. And try removing the cover and clean the contacts with contact cleaner and a piece of paper.

Tony in Mass. · Jun 13, 2016

Is this the high mileage TE20? Boy I hate to poke with too much if it was say- just an old dead battery. If the gen and reg were polarized for positive ground all along, I'd hate to mess with em now. BTW, after a few minutes just after starting- a brand new battery will only want a volt or less till it wears down with age, and the way I understand the red lite bulb, that is what it shows when a charge is needed??
just be careful you don't break something that ain't broke...

miner09 · Jun 13, 2016

Generator was working fine. Tractor started slow. Run fine and was charging. The battery was weak so he replaced with new battery and now will not charge. Just changing the battery shouldn't affect the generator.

miner09 · Jun 14, 2016

Friend took generator to shop-- works great. Shop owner said to bring voltage regulator to shop and he would set both regulator and generator to work correctly together.???? Never heard anyone say this before.Maybe something to do with 6 volt generator.

Charles in Aus. · Jun 14, 2016

I thought the red light was part of the circuit continuity Tony , without it , or with a blown or incorrect bulb the charging system won't work .

Tony in Mass. · Jun 14, 2016

I reckoned- since my TEA works good, however I got it cobbled up- it runs very well.... so.... anyway it was described to me once upon a time-- like a secondary regulator? that as long as the battery draws juice, yea thru the bulb element, the bulb lites. If like Miner's project, if no more charge is needed, bulb is out till current flow is needed again.... if it is on constantly, must be that battery will never keep a full charge? I heard of devices like this before- overcharging is sometimes not good for some things... old fashioned batteries, hi tech batteries? farm supply stores, credit cards, etc etc.... but then again- I could be wrong.... every time I am not right I am wrong again...

Charles in Aus. · Jun 15, 2016

(quoted from post at 02:56:50 06/15/16) every time I am not right I am wrong again...

You and me both Tony

TEA 20

miner09

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Charles in Aus.

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Steve@Advance

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Tony in Mass.

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miner09

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miner09

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Charles in Aus.

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Tony in Mass.

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Charles in Aus.

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