Polarize the Gen?

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Potato Wilson
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Tractors Owned: 1953 Cub (the Wife’s)
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Polarize the Gen?

Postby Potato Wilson » Wed Dec 14, 2022 8:36 am

Good morning everyone, I have a question:
Do I really have to re-polarize the generator every time the battery is disconnected? 53 Cub, 6v positive ground, battery ignition.
Thanks and have a great day!

Gary Dotson
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Re: Polarize the Gen?

Postby Gary Dotson » Wed Dec 14, 2022 8:46 am

As a rule, no, only if the generator does not charge after re-connecting. If it’s disconnected for an extended period of time, it may need polarized but for the short term it’s much less likely.

Jim Becker
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Re: Polarize the Gen?

Postby Jim Becker » Wed Dec 14, 2022 1:14 pm

Gary Dotson wrote:. . . only if the generator does not charge after re-connecting. . . .

Or if the generator has been removed or you have been dabbling with the wiring. When a generator comes back from a repair shop, the odds are at least 50-50 it will be polarized backwards.

ajhbike
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Re: Polarize the Gen?

Postby ajhbike » Thu Dec 15, 2022 5:51 am

After working on any of mine, I use the tester to check on charging and polarize as needed...even the 12 volt generators

JimCub48
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Re: Polarize the Gen?

Postby JimCub48 » Thu Dec 15, 2022 9:46 am

Why not just polarize the generator, after you reconnect battery work on generator ect. It's a simple 2 minute job , and I don't think it hurts anything to do it, as far as I know??

Jim Becker
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Re: Polarize the Gen?

Postby Jim Becker » Thu Dec 15, 2022 11:44 am

JimCub48 wrote:. . . I don't think it hurts anything to do it . . .

Correct. Do it all you want. The only drawback with a Cub is it isn't an easy reach for the lug on the generator. By the way, on the 154/185 and all those Cub Cadets with a starter/generator, it gets polarized every time you hit the start switch.

ajhbike
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Re: Polarize the Gen?

Postby ajhbike » Thu Dec 15, 2022 12:46 pm

Can't you just polarize jumping at the VR?

Jim Becker
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Re: Polarize the Gen?

Postby Jim Becker » Thu Dec 15, 2022 5:59 pm

ajhbike wrote:Can't you just polarize jumping at the VR?

Yes, depending. Access to the BAT terminal on the regulator would be on the bottom of some of them. If mounted backwards it would be harder to reach on the back side. And of course, the cut-out of a cut-out system is on top of the generator, which wouldn't be any easier to reach than the generator.

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Don McCombs
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Re: Polarize the Gen?

Postby Don McCombs » Thu Dec 15, 2022 6:36 pm

VR.jpg

For typical VR.
Don McCombs
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ajhbike
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Location: Branford, CT

Re: Polarize the Gen?

Postby ajhbike » Thu Dec 15, 2022 6:41 pm

Yep, that is what I did (although it was for a Fergie)

Potato Wilson
Posts: 39
Joined: Thu May 19, 2022 2:17 pm
Zip Code: 95667
Tractors Owned: 1953 Cub (the Wife’s)
1946 2N (I call it a 9N)
2013 JD 3320
2015 Kubota U25
1966 JD 110
Circle of Safety: Y

Re: Polarize the Gen?

Postby Potato Wilson » Sun Dec 18, 2022 9:32 pm

Thanks everyone for the advice. Sounds like it’s best to just get into the habit of doing it. Saw a you tube where a fellow installed a little jumper to make polarizing quick & easy, seemed like a good idea.


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