Freightliner century . Is it hard to changing the air compressor?

Have you been seeing any oil in your air tanks when you drain them? I realized mine was on it's way out when I was getting a whiff of anti freeze when the air dryer discharged. It was still building air fine but figured it wouldn't be long.

 

I'm no mechanic. Mine was leaking from everywhere it seemed. So, I dug in. The air compressor itself was actually pretty simple. What bit me in the arse was the steel coolant line connected to it. The fitting, after 11 years, was rusted to the line and I ended up kinking the crap out of it. No big deal, right? Just replace that line. Well, the other end was on the other side of the motor at the back of the head. Not an easy thing to get to on an International 9200! Had to take all the intake piping off above the motor. Then lay on top of the motor and squeeze my fat head and shoulders back under the firewall to get to it. That is one advantage of a long hood that isn't in the flyer! To add to it, that line was under every wire, hose, filter, etc on the drivers side. Took all day just for that coolant line.

The moral...
Just because it looks and sounds simple, doesn't mean it will be.