China Diesel older generator. Hasn't been used for years, however, supposedly started biannually. Someone messed with the wiring. rewired much of the controls and all meters appear to be working. Have 240V no load, when applying a load to one leg, the 120V drops to 0V. Suspect the exciter not working. located the the 4 Stator cables and 2 smaller wires coming from generator. Suspect the 2 smaller are the excitation wires. According to the poorly edited Chinese to English manual. I have no idea which is F+ or F- and how important will it be to get this correct when applying the 12V as suggested in the trouble shooting guide??
If you are seeing a voltage with no load, there is at least some residual magnetism in the field. Flashing the field probably wouldn't make any difference. I'd look for an open field winding or bad regulator if your machine uses brushes. If your machine is brushless, check for an open exciter winding, bad regulator, shorted or open diodes in the rotating field or open windings in the rotating field. There's a good chance that you can find decent troubleshooting advice for your generator on the smokstak forum. Fieldlines is another good resource. Don
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