Air system

I don't know...
Per the manual, I park, extend the slides, dump ALL the air, and then extend the levelers.

I suppose if you can hear the "blowoff" excessively while running, that might clue you that air is leaving the system faster than it should (and the compressor running more than it should), but I'm not sure why it's a worry when parked.

langgle wrote:
Guess its time to crawl under and take a look.

Make sure you take a soapy water squirt bottle with you!

Thanks for the replys. Mine starts losing pressure in a couple of hours. Guess its time to crawl under and take a look.

Kinda depends on how much your system leaks....realistically you shouldn't lose too much air over an 8 hour period. If I am level or fairly so, I lose none but if my coach is off a bit, the compressor will activate and re-level every couple hours....Dennis-

My Freightliner chassis was only holding air for 8 hours, so I had it checked out at a diesel repair shop. They said that 8 hours was within DOT specs, so it was okay. I still didn't like it, so they checked it out and found a leak at the air dryer and replaced gaskets/o-rings at the fittings. It now holds air for 24 hours, so I guess that I am well within DOT specs. The only thing that bothers me is that my previous coach held air pressure for a month!