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Problem with charging system

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tom

03-02-2002 09:56:45




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2-brush generator rebuilt and shows charging. new voltage regulator installed. system won,t charge. Put battery in with positive ground and amp guage shows charge, but put battery in with negative ground and amp guage shows nothing. Dealer says system is a negative ground system, and a wire is crossed. I need a wiring diagram for a 1970-71 mf-180 diesel. If anyone could help please e-mail me at the above thanks. tom

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Allan

03-02-2002 16:57:15




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 Re: problem with charging system in reply to tom, 03-02-2002 09:56:45  
Put the battery in and turn on an electrical load such as lights. If the ampmeter shows discharge, it's in right, if it shows charge ( engine not running) it's in backwards.( DON"T TRY THIS WITH AN ALTERNATOR folks, they are all neg ground.) Once you have this figgered out, jump the batt connection on the regulator to the field terminal for a second, this will polarize the generator. Start the tractor and it should work!

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