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I have a AD4 Grader and some questions

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Ray62406

09-16-2005 13:47:39

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Hi, I acquired a AD4 grader that didn't run until I changed fuel and installed a battery. Although the battery cables appeared to be set up for positive ground I set a 12 volt battery at neg ground up in it. The motor spun in the right direction so I left it that way, it starts and runs ok but it isn't charging. The generator has the data plate missing from it sot I couldn't tell if its supposed to be 6v or 12v. I am going to replace it with a one wire alternator anyway but still would like to know for sure. Also the I rewired the electric brakes and they now work but I am concerned about burning them out with the wrong voltage. Any help would be appreciated...

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BCnT

09-16-2005 13:58:48

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Re: I have a AD4 Grader and some questions in reply to Ray62406, 09-16-2005 13:47:39

i did same thing to my '62 Ford 2000...changed it over to GM alternator...other than bulbs i didnt have a prob until about 10 years later when the fuel gauge went south...i'd bet your brakes will be ok but they do make a resistor to cut voltage back down to 6 volts on sensitive parts. still got the original 6 volt starter and solenoid on it too.

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steve(ill)

09-16-2005 18:50:46

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Re: I have a AD4 Grader and some questions in reply to BCnT, 09-16-2005 13:58:48

you can check any generator by disconnecting the wires off the F ang G terminals, grounding the F terminal to the tractor frame. start the motor and have generator spinning. measure the voltage across the G and F terminals (F grounded) at an idle. the unregulated voltage will be the max output of the genertor, not the rated voltage of a battery. if it is 6 ovlt, it might put out 12-15 without a regulator and battery connected. if it is 12 it might put out 30 volts. if you only get 2-3 volts, generator is in poor condition.--- most if not all tractors prior to 1958 were 6 volt, and "most" were plsitive gorund. you can change polarity no problem, the starter does not care.

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