Quote Originally Posted by Devin W View Post
Thanks everyone for the great info and responses. I have noticed that I can hear what sounds like air leaking/seeping from somewhere in the steer bay, although it seems like it is coming more from the curbside under the stairs. Maybe the fitting for the floor slide needs to be tightened. I didn't have time today to play with it, but if the sun comes out tomorrow then I may brave the cold long enough to drop the front bumper down so I can see if I can access the leak.

I sprayed all of the other fittings, couplings, etc. near the steer bay door and all seemed to be "air-tight".

Tom, I don't have an analog gauge like you do in that compartment, but I particularly like the digital gauge that you installed on the dash to monitor the aux pressure. I may do something like that. It could be a good project for when I'm in Houston over X-mas where it will be a bit warmer!

How does the compressor know what pressure to maintain in the aux system? I didn't see any way to set a pressure or where there may be a sensor on the aux air fitting that monitors that. On the sys 1 and 2 fittings, it's pretty evident where the sensors are for the gauges.
Devin,

The topic of air leaks, how to find them, where they might be, the aux compressor, how pressures are regulated, etc. is difficult even if all of us have the same conversion. The complexity of the issue goes up exponentially as we are faced with upgrades made by the converter (your Liberty and mine may not have the same compressor for example), changes made by owners over the years and differences between other conversions and ours.

But we might be able to generalize. Often our aux air compressors on Liberty coaches use what looks like a well pump switch, mounted on the rear wall of the steer compartment bulkhead. It is adjustable and the range may be anywhere from 40 on to 80 off to 80 on to 100 off. Most I have heard of use the 100 PSI upper limit.

Finding air leaks is more art than science. Amongst this group we use our ears, soapy water, stethoscopes and ultrasonic leak detectors. None of the previous work for all leaks, and each method has its strengths and weaknesses. If you turn your coach over to someone and ask them to make your aux system leak free for example, it is likely you have just paid for someone's kid's college education. I'm only half kidding.

If you can hear the leak, you will recognize it is hard to pin point its location because of the ability for a leak over here to sound like it is coming from over there. The next step is to spend $5.00 at Sears on a stethoscope which when pointed at the leak amplifies its sound making it easier to locate.

There is not enough space or time to provide much more on this but as you play around chasing leaks post your findings and the inmates of this asylum we call POG can offer advice and tips.

BTW, If you think the floor slide is a culprit locate the air line feeding the solenoid valves that operate the slide and cap the air supply to them. The air leak should go away. The cylinder is serviceable, but before fretting over that the best bet is to prove that is the problem, or at least one of the problems.