CAT 955H Generator Issues

I was finally able to get back up to the CAT and follow the advice of doing some preliminary testing although not as much as I would like to have done. I was not able to polorize the regulator as I cannot find it, and can't trace the wires anywhere.

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 on the cable insulation as the neg cable passed through the lower battery box.I also cleaned the batteries with a baking soda solution.

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?

Could the generator have an integral regulator inside it, which is why I cannot locate a seperate Regulator box?

Can I polorize by jumping the BAT and ARM wires on the generator itself?

Also there is no red reset button on or near the dash.

Any help would be appreciated.

You may be right though, I should probably service the starter sooner than later.

• Polarize

If not, then I can run her down to the garage and put the charger on the batteries, and start all over again.

I cannot locate the hump that your talking about. Inside the cab area, there is no hump. The Hydraulic tank is on the right side, adjacent to the seat. The left side has two battery compartments and the ram. I'm wondering if its in the center compartment/console that houses the start switch, throttle, and brake lock?

• Guard