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generator problems

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RIch - UT

12-28-2003 18:27:48

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My generator doesn't seem to be charging my battery. I polarized my voltage regulator as per instructions kindly supplied by Dell, but still have not achieved a positive ammeter reading.

Prior to polarizing, the ammmeter would indicate a -2 to -3v when cranking the engine. Once the engine was running it showed a -1v unless I had the lights on and then it would be -6 or -7v. Now that I ploarized the VR, the ammeter does not move when cranking or running the engine but still shows the same -7v with the lights on. Did I fry something when I polarized the VR?

I checked the output screw on the generator and it was already turned to the highest setting. Is there anything else I should check before I spend any money? Is there any reason to consider switching to a 12v system or should I stick with the 6v where the tractor starts fine. I would like the best fix for the money on this one since it sounds like the starter is going to need some attention soon too.

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Joe (IN)

12-29-2003 01:29:19

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Re: generator problems in reply to RIch - UT, 12-28-2003 18:27:48

It's not possible to fry anything when polarizing unless you short the wrong terminals together. It's pretty easy to let all the smoke out of a regulator if you accidently short the battery and field terminals together. The ammeter readings after you polarized sound about right - for a tractor with a broken charging system. Try starting it up and then shorting the field terminal and ground terminal together at the generator. This effectively bypasses the regulator. If the ammeter shows a charge with the field shorted to ground, then the regulator is bad.

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