[PermianRaptor]

Looks like mine is #213. Weird, as all paperwork states it is a 90'. I will have to do some more fine looking on that. We thought it was the compressor that was going bad, but we can't seem to even find he compressor on the engine. It is the Detroit with 4 speed Allison auto. The switch is on "Generator" as well. I've been told the engine of the generator is good, but the electric catalyst (?) I'm assuming the part that creates electricity from mechanical energy, is no good and will have to hunt it down and a way to get it fixed first and foremost. But like you said, the air system needs the help. I'm not sure where exactly to run the air check.