Did I miss it? I have not seen a reference yet to the charge idiot light on the dash. If there was a alternator or regulator failure, the charge light would come on.
I also see that there is supposed to be a lighting connector for a trailer on this machine. Is this so? Check to see if there is a problem with this connector (dummy plug installed, dirt or crud causing a short). To me, the key clue in this investigation is that the machine dies when the battery cable is pulled off. To me, this means that: The alternator output is zero (dead alternator), or the alternator output is insufficient to provide all the electrical needs (lights, fuel pump, gauges, safety switches, shorts, or other high loads, whatever).
So, check to see what the headlights do when you run the throttle up and down. Look around for any hot spots in the wiring, solenoids, or auxilliary equipment that may be stuck in the ON position (glow plugs??), etc.
I had the exact same issue with my JD 1070, but at least I had the idiot light to tell me something was amiss. It was the voltage regulator.
I also see that there is supposed to be a lighting connector for a trailer on this machine. Is this so? Check to see if there is a problem with this connector (dummy plug installed, dirt or crud causing a short). To me, the key clue in this investigation is that the machine dies when the battery cable is pulled off. To me, this means that: The alternator output is zero (dead alternator), or the alternator output is insufficient to provide all the electrical needs (lights, fuel pump, gauges, safety switches, shorts, or other high loads, whatever).
So, check to see what the headlights do when you run the throttle up and down. Look around for any hot spots in the wiring, solenoids, or auxilliary equipment that may be stuck in the ON position (glow plugs??), etc.
I had the exact same issue with my JD 1070, but at least I had the idiot light to tell me something was amiss. It was the voltage regulator.