I was finally able to get back up to the CAT and do some preliminary testing although not as much as I would like to have done. So its a 24V system with (2) 12V batteries in series. The newest (upper) battery shows 11.80Vdc and the lower battery shows 12.38Vdc (measurements taken directly on battery posts with digital multimeter). This is without having been charged and not having been run in 2 weeks. The upper battery is a maintenance free CAT battery, but the lower showed hydrometer readings of 1.225/1.205; 1.240/1.235;1.230/1.240 (again not charged). I cleaned the battery posts and cable terminals extensively and recinched the cables to them, repairing some rub damage as the neg cable passed through the lower battery box. On preheat the Vdc dropped to 6.99 and 8.99 respectively (the ammeter shows a discharge of 10). On Start the Vdc dropped to 8.64 and 7.97(the ammeter shows a discharge of 5).On start there is not enough juice to start it, and it only clicks. So I see 3 wires that connect to the generator, although they are all painted over. I don't see a regulator anywhere. I wasn't able to start it (because I didnt have two cars to jumpstart with and its nowhere near power to charge the batteries) so I couldnt raise the bucket to bury my head in there. Where is the regulator located? I couldnt find any sort of regulator box to try to polarize it. The dash board only has the guages in it (from having looked when the guages were replaced a while back). Where is it? Even though the batteries had not been charged, and dont have enough juice to start the tractor without being boosted, what should I expect to see them reading Vdc? Also there is no red reset button on or near the dash. Any help would be appreciated.
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