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Bob M or John T, W6 electrical problems
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Posted by chadd on March 18, 2007 at 11:13:27 from (4.142.219.92):
Well, we had done the test on the generator where you ground the field terminal again and it began charging when the generator was hooked up with a negative ground. Well I just put another regulator on it, and reversed the terminals back to positive ground and this time I grounded the field terminal and then jumped the batt and arm terminals. I reconnected the field terminal and then when I started the tractor, the ammeter went back and pegged at full drain again. Is it possible for a generator to be permanently polarized? It seems regardless of what I do, it wants to run with a negative ground. However, the regulators are for positive ground. The tractor has never operated in a negative ground condition its entire life. If it pegs at full drain on positive ground and the needle just bounces around with negative ground, is this definitely a generator problem, or could it be a tractor electrical system problem? When the tractor was rewired 15 years ago, the regulator was moved to a perch on top of the generator, so there are no wires that are chafed through. I am running out of ideas here. . . Any recommendations? Thanks.
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