Andy FL shop or any qualified diesel repair shop can check your airlines for air leaks. However, you can basically do the same thing with a bottle of Windex.
* With your engine running, you can raise the air bags to their full "up" position with an Active Air (AA) system. This will give you more clearance to crawl underneath. And for even more room, you can drive up on your leveling blocks for another 2-3" and then raise your coach.
* You can also get more room under your engine by parking it on a driveway that slops "up"... and then raise the rear air bags... and then lower the front end.
Note: You are not pulling any airlines so it will be safe. However, you do NOT want to separate and fix any air lines until you put you RV on a level surface, dump your air tanks, and raise coach using your HWH Jacks!
When you can safely crawl under your coach, then you can use an appropriate wrench to slide over the airline... which will give you leverage to push on the fitting... and when you push on the collar in one direction... you then pull the air line out in the other direction.
Then you need to trim the airline with a clean-90-degree-cut; and then just push the air line back in the coupler. ...Just make sure you have enough airline to trim off 1/8", because my airline was cut so tight that added a brass pipe extension in order to give us enough air line to work with.
==== Active Air Ride Height Adjustment ===
* If you find your coach is leaking to the right as your drive down the highway, that's because the AA system will level the coach with the road.
* ~80% of all Freeways are sloped 2 degrees to the right; and most country highways are sloped 2-4 degrees to the right and/or to the left. This allows rain to runoff the road.
* The problem I found is that my back was getting sore sitting in the driver's seat. Of course you can use a 2" foam pad and angle it on the high-side of the captain's seat to help with this problem, but I did not truly get find any back relief until I took my coach to HWH so they can adjust the ride height... and yes, they also found a slow air leak in one of my air bag lines, that that had no affect on my suspension.
It was at HWH that I say them use a proprietary diagnostic tool to adjust my ride height. And there are only so many coach dealers that have is tool.
Here'e the HWH ACTIVE AIR "GOLD STAR" REPAIR SHOPS ACROSS THE COUNTRY... BUT IT HAS NOT BEEN UPDATED FOR 10+ YEARS SO YOU NEED TO CALL AHEAD FIRST:
Note: I have called quite a few of these shops and most of them DO NOT work on Active Air systems. Foretravel has perhaps installed the most AA systems, but but they really don't want to work on Winnebago's. *** So I keep this HWH list as a reference list to find general RV repair shops when I am traveling!!!
WHATEVER YOU DO, DON'T TAKE YOUR HWH "ACTIVE AIR" TO FREIGHTLINER TO ADJUST YOUR RIDE HEIGHT!
I tried that once and I can confirm that even the Freightliner "Oasis" locations, who are supposed to be RV-friendly, do NOT know anything about HWH "ACTIVE AIR" Systems.
I just wasted my time when I went to FL to get my Active Air ride height adjusted; and I ended up in a billing dispute. This is what happened:
The Freightliner CSM will tell you they can work on HWH, but when he hands the job off to his mechanic, who then talks to his service manager, who calls ???? (Mom); they will ultimately give up, but that won't stop them from trying to bill for their education, even though they told you can know how to work on an HWH-AA system.
My bill came to $250 and FL, Austin fixed NOTHING!
...The CSM tried to charge me $150 for a "computer diagnosis" and $100 for a minimum service charge, after 2 hours of effort. ...But when I asked the CSM to show me where he connected his computer to diagnose the HWH system, they couldn't do it, because there is no
computer port the FL mechanic could connect to!
When I went to HWH in Iowa they couldn't have been nicer; and they don't mind owners being in the service area! They even have several full-hook-up for overnight parking. So if you go to HWH you should have a good experience and they bill fairly, based on my experience. (Most of the time they will not charge you to adjust the ride-height. So you can't beat that! ...But it depends what they find and repair.)
So by all means, any shop can find an air leak, but only HWH can adjust your Air Ride suspension and may Winnebago, Forest City. Litchenstein too, maybe???