We were heading to one of my grandson's races in Stockton CA. last weekend, temperature was a hovering around 100 degrees (it's a dry heat) Our Onan 8000 quit working, at first I thought maybe we were low enough on fuel and bouncing along on our wonderful California highway 99. Restarted it 3 more times to no avail. Stopped in Ripon CA. to fuel up, it still wouldn't run. Gave up and worked in the pits for my grandson's race, (he won) so that made things much better. Decided to see what was up with the generator on Tuesday, found 1 broken belt (1757 hours) I thought this might be the culprit. $12.37 from Cummins West and about 3 hours of work and she is purring like she always has.