Re: Super M 12V Not Charging at Idle

Posted by Brownie 45 on February 20, 2006 at 08:14:14 from (207.177.82.235):

In Reply to: Super M 12V Not Charging at Idle posted by Randy_NE on February 20, 2006 at 06:24:03:

The first thing that comes to mind, is you should check the diode trio in the alternator. Sounds like you have two out of the three sections open. I've had two alternators with this very thing wrong, so it's not at all uncommon. The diode trio supplies the field with it's current-voltage. Check it with an ohmmeter on the X1 scale. Should read infinity one direction & about 30 to 40 ohms with the leads reversed, on all three leads, if it is good. If bad, one or more leads will show open[infinity] in both directions.

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