Posted by Janicholson on November 16, 2008 at 06:50:39 from (66.173.50.135):
In Reply to: 140 Charging posted by rowtohoe on November 16, 2008 at 06:34:17:
With it running at 1/2 throttle or higher it should be reading between 14.2 and 14.6 volts when the volt meter is placed across the battery posts. (not the clamps, the actual battery posts) If it is within this range, it is great. If the meter you are using is going all over the place with numbers it is because the digital meters of modest cost try to read DC as though it were pure. DC in a generator charging system is far from pure, it is a noisy irrational average of voltages that amount to a charging event. An analog (needle type) meter is much more accurate in this environment. (or a Fluke quality professional DMM) If the amp meter is not showing charge, and the volts are OK it needs to be determined if someone wired the amp meter wrong. or it is stuck and not moving (common). If it is showing low charging volts, 12.4 to 12.6, then use a jumper wire (with it running as above) to temporarily ground the F (small) terminal on the Generator. If it now charges a bunch, I would replace the Voltage regulator. John T has a charging system analysis list in the archives that is too long to repeatedly copy to the response. So use the archives to find-- John T charging system trouble shooting --. JimN
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