Posted by Bob M on February 05, 2009 at 18:20:35 from (74.74.133.120):
In Reply to: Super A - Generator posted by Brian Luton on February 05, 2009 at 17:57:27:
Brian - The Super A will start reliably in the coldest weather with a well-maintained 6 volt electrical system. So unless your tractor is a daily worker, I'd stay with the stock 6 volt system.
A good system will charge 12 - 15 amps (about 2/3 right deflection on the ammeter) after startup. It sounds like yours is charging very little if it all. But before you tear into the generator, make sure generator is indeed the problem and not the regulator or wiring.
A quick test: Run a temporary jumper wire between the generator "F" terminal and a GOOD ground. Now run the engine at governed RPM and note the ammeter reading.
If the ammeter shows 12 - 15 amps the generator is fine - the problem is a bad regulator, a bad regulator ground or a wiring problem. But if if the ammeter's still centered then be looking for a generator problem.
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