I'm jealous of the diesel air conditioners! Most of us struggle with trying to figure out how to run them off shore power or a gennie, let alone when driving down the road. You have the cat's meow there as long as they work and you figure out a way to quiet the engine down (I'm sure you will).
In a quarter century in trucking, I've seen a lot of hoses between the frame and the
axle get worn thru because it rubs on something when the suspension moves. Such
a hose may not be spliced as a repair; it must be replaced.