kaypsmith Report post Posted January 25, 2019 After replacing 6 air bags a while back, when I fired up the coach and to my disappointment still had an air leak. Attached is a picture of the culprit. I posted this as a reminder to check all fittings while replacing these guys, it is much easier while the bags are still off than after the replacement of the bags have been made. Share this post Link to post Share on other sites
wildebill308 Report post Posted January 25, 2019 Yep, looks like it was over torqued. Is it a flare or compression fitting? Bill Share this post Link to post Share on other sites
kaypsmith Report post Posted January 25, 2019 Compression fitting! Share this post Link to post Share on other sites
wildebill308 Report post Posted January 25, 2019 Most air lines on trucks/buses are. Not hard to replace just annoying that you had to. Hope this is the end of the air leaks. Bill Share this post Link to post Share on other sites
brianreed Report post Posted April 25, 2019 I also have an air leak in my front suspension. It takes a day or two for it to dump all the way down. The rear does not go down like the front. IT also builds air within minutes of starting the coach, and never drops so I suspect it is a very slow leak. I have not started to look for it, but I know I should. Share this post Link to post Share on other sites
richard5933 Report post Posted April 25, 2019 Brian - Before you even think about looking for the leak, please read and learn about how to properly block your coach for safety. The leveling jacks are not safe to use to support the coach while you're under it, and there are specific points that need to be supported which are make/model dependent. Newmar should be able to provide the needed information. When you are looking for the leaks, have a spray bottle with soapy water and take your time. Be sure to check all fittings, as well as the leveling valves/height adjustment valves themselves. If you don't find any air leaking externally to the fittings/hardware, then you might have a failed or dirty check valve. Share this post Link to post Share on other sites
brianreed Report post Posted April 25, 2019 Thank you Richard for the reminder and yes I did read the warning and will heed them. Share this post Link to post Share on other sites
kaypsmith Report post Posted April 25, 2019 Brian, does both sides on the front drop, or just one side? Share this post Link to post Share on other sites
rayin Report post Posted April 26, 2019 Brian I also have a slow air leak, it causes the rear to lose air even though it is a valve right behind my genset. I just have to find time to block up the frame, bleed off all air via manual tank drains, and remove the offending valve so it can be rebuilt or replaced. I realized what causes my front to drop; when I enter/exit the MH while in storage, the leveling valve attempts to maintain a level condition by trying to add air to the heavy side, which of course it cannot do when turned off. This just bleeds air out of the system and both sides drop as a result. Share this post Link to post Share on other sites
