Posted by JMOR on November 09, 2007 at 05:59:32 from (76.185.68.29):
Bob, you mentioned being alternator repair man in a recent post & sound pretty knowledgeable, so maybe you can answer a long standing question of mine. {Since it isn't going to fix anyone's problem & if smoked, the device can't readily (likely not at all) be fixed any way, if you deem responding a waste of your & other's time, I'll understand.}
The circuit diagram for the internals of the Regulator of the GM 10-SI: analysis would indicate that if the connection to TERM#2 were lost, then TR@ turns off, resulting in TR1 turning on, and the field receives full current, resulting in full alt output to Batt. (as in a VERY dead batt=zero volts). Whereas, such an open Sense line connection actually results in NO output from alternator. I suspect that this circuit representation is incomplete & for illustrative purposes only, but there could be more to it than that? P.S. I have observed this on three different alts. & have not examined this on more, so I can't state that it is universal, but...
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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