Oh 460 generator terminals

Is there any way to tell which terminal is the armature and wich is the field? Not labeled. I want to polarize, and jumped the battery terminal to what I thought was the "a" post since it was easier then jumping directly on the voltage regulator, but I think I burnt out my regulator. Now my glowplug meter is not working....[/img]
 
If you put an ohmmeter one lead to the metal case/frame, other to the terminals, BAT would be very high ohms like an open circuit,,,,,,,,,,ARM/GEN would be in the neighborhood of perhaps 15 to 50 ohms (depends on which VR, no specs here, only a guess) ,,,,,,,,,,,,FLD would be the absolute lowest ohms.

This isn't perfect and may not work on all VR's but it works on some and this is a start. With the cover removed there are other methods.

You can polarize without using the VR. Just temporarily flash jump a hot wire (could use VR's BAT terminal as that is hot) to the Gennys ARM post to get the spark.

John T

John T
 
If you mean the posts on the GENERATOR, use an ohmmeter to test the resistance of each to the generator housing.

The resistance at "A" terminal will be very low - like a few tenths of an ohm.

"F" will show higher resistance - something around 2 to 5 ohms depending on the generator.
 
Thank you guys. I'll try testing the resistance. Problem was generator was not working which is what led me to attempt to polarize it. And being a old boys tractor nothing is quite right on it.... Out of curiosity, for my own learning, what would happen if the previous owner had the terminals hooked up backwards to the voltage regulator? Meaning the armature wired to the field tabs on the regulator and vice versa.
 

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