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Generator Charging?

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Ron

09-13-2002 18:21:10




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I have a 1942 Ford 9N with a front distributor. How can I measure if the generator is charging?




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ED-IL

09-13-2002 21:15:04




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 Re: Generator Charging? in reply to Ron, 09-13-2002 18:21:10  
the amp meter is a good measure, unless your wiring has been messed with or the amp meter has gone bad.

With a multi-meter on the battery terminals and engine off, you should have 6.2 volts with a full battery (assuming 6 volt system). WHile running, you should get 7.2 volts indicating the charge from the generator. Also, you can test the generator output at the generator. Again, while charging you should see 7.2 volts.

Now, on my 2N the cut-out relay was causing a problem. The relay on the 9/2N is suposed to open up when the generator is not charging and close when it is charging. This prevents the battery from draining back through the generator while sending voltage to the battery while the generator is turning. In my case, the relay never made a good enough connection to keep the battery charged. I went through two new ones in as many month until I got fed up.

Dell (see message post below) sugested an after-market replacement which was an honest voltage regulator. I was skeptical but gave it a try. Well, that was over a year ago. Not a dead battery since. I like to use the headlights during the winter while plowing snow. With the regulator it is no problem.

Take a look at your electrics and measure the voltage and get back to us. If you are interested, I posted the link to the voltage regulator website below.

Good Luck.

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Gaspump

09-14-2002 06:32:51




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 Re: Re: Generator Charging? in reply to ED-IL, 09-13-2002 21:15:04  
Thanks for posting the link Ed, I had that info in my files but misplaced it. Also I am glad to hear the regulator works! I read a post here recently that the three brush regulator could not be regulated so I was hesitant. I too have seen the same cut-out problems on my 2N.



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8n in mn

09-13-2002 20:39:14




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 Re: Generator Charging? in reply to Ron, 09-13-2002 18:21:10  
Watch the ampmeter while you turn the ignition key on. When you turn the key on, you should see the ampmeter move toward the negative side. Try to get a good read of where the needle is pointing. When you press the starter button, you will definitely see the ampmeter bounce further downward. When the engine starts and if the generator and electrical circuitry is working properly, the ampmeter should be reading slightly higher than when you first turned on the key. With mine, the reading was only 1-2 amps higher, but this was enough to keep the battery charged. Hope this helps.

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raytasch

09-14-2002 07:30:29




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 Re: Re: Generator Charging? in reply to 8n in mn, 09-13-2002 20:39:14  
Very minor point, in fact someone may claim it is 'nitpickin', but, you will probably see the ampmeter move to the discharge indication only if the points are closed. Would not want to see someone get carried down the 'long path' looking for a discharge indication when he should not be seeing it.
ray



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Dell (WA)

09-13-2002 18:53:43




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 Re: Generator Charging? in reply to Ron, 09-13-2002 18:21:10  
Ron..... ....would you believe that is what the ammeter on your dashpanel is for?

The ammeter measures the charge into and out of your battery. Your 9N generator's charge output is governed by the 3rd brush adjustment on the end of your generator. Normally, you would adjust your generator charge for about 3-5 amps while the tractor is running at about 1500 rpms (2/3's throttle)..... ...Dell



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