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Re: Generator/regulator i.d. from photo
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You have (probably) a 3 brush generator. It has been wired for full output all the time. (third brush location on the commutator is adjustable to manually regulate charge rate)
If the device shown is a solid state cutout, as Bob M is indicating, and I agree, and if it is "open" meaning it is basically a burnt out light bulb, the voltage will be that high because the gen is mot loaded.
The best solution for battery life is to use a voltage regulator (two regulating devices inside, one is a cutout, the other controls the grounding of the field to assure correct battery charging)
The third brush is moved all the way toward the fixed brush as far as it will go.
The Field terminal on the gen (now grounded) is hooked to the F terminal on the regulator.
The Arm terminal on the regulator (it might say GEN on it) is connected to the Arm terminal on the Generator (now connected to the existing cutout)
THe Bat terminal on the new regulator is connected to the wire now connected top the other end of the bad cutout.
No other connections are needed.
Make sure the new regulator is grounded to the tractor or generator it must be a clean and shiny connection to ground through its mount.
It should be good to go. Jim
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