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John Deere Tractors Discussion Forum
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Re: Generator still won't charge!

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02-12-2013 04:25:28

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John T; From the previous post this genny put out 40 amps on the test bench. The rebuilder had to have used 12v components and high speed to get that many amps. I think that's why it takes 12v to motor test it. Since a genny is only concerened with amps shoulden't it still charge a 6v?

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John T

02-12-2013 05:06:33

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 Re: Generator still won't charge! in reply to M-MAN, 02-12-2013 04:25:28  

as you mention it either has 12 volt fields accidentally installed OR IM STARTIN TO THINK THEY ARE WIRED WRONG OR REVERSED

YES a true proper wired 12 volt genny can easily charge a 6 volt battery YES its more a current source then a voltage device

The armature dont matter as much so if hes wired right Im still back to a genny problem like miswired or wrong field windings

John T

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02-12-2013 05:02:41

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 Re: Generator still won't charge! in reply to M-MAN, 02-12-2013 04:25:28  
No telling how fast that machine was turning, he didn't know how fast it was turning either. He even eventually admitted he didn't know much about six volt systems.

Still has to be something wrong since it spins one way during motor test and then starts spinning another way when I remove the jumper from ground to field.
I can't take it apart it has a tamper proof seal on the back and if I take it apart he said warranty is void. I'll take it to him and see what he says.
Before you know it spring will be here and I want to take it to some plow days. Time is running out.

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John T

02-12-2013 05:13:28

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 Re: Generator still won't charge! in reply to JohnDeereM50, 02-12-2013 05:02:41  
The direction of current through the fields affects the North/South MAGNETIC Polarity (which determines + - ELECTRICAL Polarity and if wired right one side becomes a North Pole and the other side a South Pole. One end of first field to a brush,,,,,,,,splice in the middle,,,,,output of 2nd field to FLD post.

Assuming shes wired right and all else is okay????? I STILL SAY THE GENNY ISNT RIGHT REGARDLESS WHAT HE SAYS (Fields, Field wiring, Field orientation)

John T

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