I installed on board air on my CJ7 a few years ago but never really used it. I never actually finished it completely. I was using a Sanden type compressor because I had one that fit the engine. It was set up completely manual. I had a safety valve but no pressure switch attached.

Several people informed me I did it completely wrong and that my Sanden compressor would never last. I was told I needed to use a York compressor because they had an oil sump and could contain their own oil.

Well I'm ready to install on board air on my M715 now. I have a Harrison compressor already on my 6.2 that has a serpentine belt setup. I plan to use the Harrison pump as the air source. I've long thought any AC compressor would live fine pumping air as long as they were well oiled.

That brought me here.

What I'm wondering is how will I vent my Harrison crank case? The video doesn't have very good pictures of the components in use and is also using the Sanden type compressor.

Anyone here set up with on board air similar to the way the video shows his set up?

I already have a tank mounted to the bed tool box that measures out to about two and a half gallons of air storage. I also have a check valve, a safety blow off valve and a pressure switch as well as the dash switches to control everything.

I just need to figure out the oiling system really. Anyone have any experience with this that can steer me in the right direction? I don't think I have enough smarts to invent the wheel so to speak.