L3130 stalls

[MT616]

Hello everyone,
I have a 2006 L3130 with 750 hrs on it (3 cylinder diesel). Recently it has started stalling. Starts and runs fine, for about 30 or 40 minutes, then just quits. It will start right up again, then die within 30 seconds or so. Let it sit overnight, and it will go back to running 30 minutes or so. Always starts right up and sounds good (to my untrained ear) until it quits - no warning, just like somebody turned off the ignition switch. Some component heating up and quitting when it gets too warm?
So far, I've run it with the gas cap loose to make sure it wasn't pulling a vacuum, changed the fuel filter element, drained out old fuel and put in fresh, and bled the air out of the fuel system. No change.
Thank you for any suggestions.

 

[Jsjac]

Couple questions?
Does it just die like turned the key switch off or does it die down?
Are you sitting back in the seat? Maybe the seat switch ?

 

[MT616]

Couple questions?
Does it just die like turned the key switch off or does it die down?
Are you sitting back in the seat? Maybe the seat switch ?

Just running smoothly and dies like the key switch was turned off - no warning that it's about to die.
One of the first things I did when I got the tractor was override the seat switch. But, I did check and the override is still good. Also, it will die when it is just sitting still and running with nobody on it.

 

[North Idaho Wolfman]

Failing stop solenoid.
Which in your case it's a run solenoid, so it failing will cause it to shut down.