Which is which?

AF 70 · Jul 30, 2012

Working on the electrical of the H. Someone's painted the generator, looks like maybe a couple of times. Can't tell which terminal is armature and which is field. Has original pos ground 6 v gen. Can anyone tell me which is which? Which is closer to engine when it's mounted?

Thanks a lot!!

CNKS · Jul 30, 2012

Too lazy to go look. The terminals are marked, you may have to remove some paint.

Nebraska Cowman · Jul 30, 2012

Yeah, scratch around, you should find an "F" or an "A". If it's still hooked up the heavier wire is the armature.

Janicholson · Jul 30, 2012

Take the wires off, Use a hot wire to brush each terminal the one that sparks a lot is Arm. Repolarize when connected. (I think it is the one close to the engine) Jim

Patrick HMD · Jul 30, 2012

Sorry for the image size. That's the best I could do. Well anyway, notice where I scraped the paint off next to the terminal. It's got a very faint "F" stamped on it. That BTW, what you see is a 6 volt gen. HTH.

Patrick

Janicholson · Jul 30, 2012

The device on top of it is a cutout relay, not a regulator. It is also wired (from what I see) wrong. If it was originally on a tractor with no headlights from the factory, the field wire should be connected to Field on the cutout. and no other wire connected to Field terminals. If it has lights, and a 4 position light switch, the Field wire connection to the cutout should be removed. The other wire should be 10 gauge, and if it is the arm or Gen terminal it should be attached to the A terminal on the Gen. The other terminal (bat) on the Cutout should be attached to the amp gauge load side. Jim
Bob M diagrams

gene bender · Jul 30, 2012

They came from the factory with a wire to the field terminals. Ive got several that way and they work. Even runacross some originals wired that way and now you people say they should not be connected. Ive been around long enough to recognize original wiring and have installed gens that have been rebuilt localy and they always have the wire connected to both fields and they work. Do you have a tractor that still has the original wiring

Patrick HMD · Jul 30, 2012

Thanks for bringing that up Jim. I too noticed the wiring not being like Bob's diagrams, and was a bit perplexed, and was gong to start another tread concerning this. But now I see not nesecceary. The doggone tractor runs fine as is. Here's another shot.

Owen Aaland · Jul 31, 2012

With a field wire connected to both the light switch and the cutout the low charge circuit will have a high charging rate than using just the light switch alone. The high charge rate will not be affected. Unless the battery is being overcharged there is no problem leaving it as it is.

Which is which?

AF 70

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CNKS

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Nebraska Cowman

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Janicholson

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Patrick HMD

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Janicholson

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gene bender

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Patrick HMD

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Owen Aaland

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