Posted by Brownie 450 on March 23, 2009 at 04:02:08 from (216.51.158.151):
In Reply to: Farmall M overcharging posted by Shawn in PA on March 20, 2009 at 21:40:03:
Just re-reading this whole thing---how much output is your alternator rated at? The amps rating is usually stamped on the case near the tightener hole. See if you can read this value. I always use an alternator rated 37 amps on tractor conversions--but are hard to find now. If your unit is a higher capacity unit, say 63 amps or more, & you are using the original meter, the meter would be reading maximum. Pulley size will affect output also, but not to that large a degree---our SMTA will charge off scale right after starting if not left at idle, but will taper back to less than 5 amps within 1 minute after a "normal" start. Getting back to this 7 amp discharge thing, try unhooking the wire at the coil as well as the Bat. terminal at the back of the alternator--then pull the ignition switch on & see what happens. If you don't have a hold-against ammeter--do you have a spare ammeter which you can use after disconnecting the coil & alternator we need to know where the 7 amp draw is getting away to. We have to isolate between the alt. & coil.
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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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