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03-26-2012, 01:38 PM | #1 |
Member
Join Date: Jun 2010
Posts: 35
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ammeter/generator questions
I know this type of thing has probably been posted a bunch of times, but I figured it would be easier to just ask instead of searching and searching. So, Ive ben having a few issues with my ammeter and generator output and would like some advice/troubleshooting tips. When the engine is idle, the ammeter reads 0, when the lights are on or i honk the hork(while idle or engine off), the ammeter dips to about -10. When i rev the engine or accelerate, the ammeter shoots way up, past the end of gauge, also the lights burn brighter. Im not really sure what all is normal and what isnt, though I know its definitely not suppose to shoot off the scale like it does. Anyone know what the potential problems may be and how I would go about remedying them? Any input anyone has would be great. Thank you.
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03-26-2012, 02:12 PM | #2 |
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Join Date: May 2010
Location: North Carolina
Posts: 611
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Re: ammeter/generator questions
1. Idling at zero is normal
2. Discharging is normal when items are turned on. 3. That high of a charge is not normal. It could be set charging to high, which is adjusting the brush inside of the generator cover. Remove the generator cover and the top brush (3rd brush) will move up or down. Try moving that and see if that makes a difference in the charge rate at the ammeter. If not, then probably somethings else wrong with the generator. |
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03-26-2012, 03:55 PM | #3 |
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Location: So Cal
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Re: ammeter/generator questions
Also give us some voltage readings at idle and higher RPMs.
Bob |
03-26-2012, 03:58 PM | #4 |
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Join Date: Dec 2011
Location: North Branch, MN.
Posts: 161
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Re: ammeter/generator questions
How old is your battery? A weak/old battery will discharge at a quicker rate, and require more to recharge out of the generator on a regular basis.
Disconnect your battery overnight and check the voltage in the morning.
__________________
Mike B. Model A's and Porsches since 1957 |
03-26-2012, 04:58 PM | #5 |
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Join Date: Jun 2010
Posts: 35
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Re: ammeter/generator questions
adjusted the third brush, everything seems to be in order. Thanks for the tips.
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03-26-2012, 05:51 PM | #6 |
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Location: Eastern Canada NB
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Re: ammeter/generator questions
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03-26-2012, 08:06 PM | #7 | |
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Join Date: Nov 2011
Posts: 64
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Re: ammeter/generator questions
Quote:
With no load on it(if you disconnect the belt), the generator will not take very much current to motor. If you leave the belt hooked up, and try to turn the engine over by motoring the generator, you will likely draw an excess of current. |
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