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koates · 04-09-2016, 03:25 AM

petehoovie, I do not agree with your volt meter method of adjusting the third brush and neither does the ford shop manuals. The third brush system has no voltage control as such and even if you set it at 7.5 volts at the battery you still don't know what the amps are doing. If it is a two brush gen with a separate voltage and current control regulator then you set the voltage and current outputs with the regulator. Correct way to set the third brush type is by using an ammeter and limit the generators safe maximum amps output to the recommendation OR LOWER as required by your vehicles loads. Being doing it this way for more than 50 years Pete. Just make sure the amps charging don't exceed the generators safe maximum at any time. Regards, Kevin.

04-09-2016, 03:25 AM	#12
koates Senior Member Join Date: May 2010 Location: Melbourne Australia. Posts: 2,078	Re: Generator Third brush Adjustment petehoovie, I do not agree with your volt meter method of adjusting the third brush and neither does the ford shop manuals. The third brush system has no voltage control as such and even if you set it at 7.5 volts at the battery you still don't know what the amps are doing. If it is a two brush gen with a separate voltage and current control regulator then you set the voltage and current outputs with the regulator. Correct way to set the third brush type is by using an ammeter and limit the generators safe maximum amps output to the recommendation OR LOWER as required by your vehicles loads. Being doing it this way for more than 50 years Pete. Just make sure the amps charging don't exceed the generators safe maximum at any time. Regards, Kevin.