Posted by JMOR on September 22, 2009 at 14:01:24 from (72.181.156.161):
In Reply to: Generator on M posted by 728171 on September 22, 2009 at 07:22:15:
Bill in IL said: (quoted from post at 15:58:45 09/22/09) How do you go about tweaking up the "set" voltage in the regulator? I do trust my meter to be accurate. Maybe that is all my problem is.
Planning also to hook up to the load terminal of the VR.
I also did run the tractor up to full throttle with no change. Did most of my testing about about half thottle due to not noticing much difference after that. Lights are stock lamps that don't put out much more light than a candle on a good dark night so the generator should be able to keep up with them.
Bill, earlier, you said, "I also did ground the field terminal with the lights on and it still discharges." That grounding of the FLD makes the generator provide maximum output, so if that is insufficient, then I don't believe any VR tweaking will get you there.
A little research into my stack of old manuals shows the M generator maximum output to be 9 to 11 amps hot and 13 to 16 amps cold. If that applies to the generator that you have AND if your lamp power is the same as currently listed replacement lamps (30w per headlight and 24 watts rear work light), then it simply can not keep up when hot.
(30+30+24)/6.8v= 12.3 amps. (barely make it w/o work lamp). And I can tell you, that this picture just about fits my experience with my SMTA.
My M manual shows adjustable 3rd brush & adjusting procedure and my SMTA manual states "fixed 3rd brush".
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