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Old 01-26-2022, 05:14 AM   #1
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Losing Air Overnight

Jim

My. Unit was manufacture Dec 2002 and title 2003. Just for info.
Question on Coach, when I shut down at park site. Sometimes I just set my auto level ,Works as should stays level.But next day it seems to lose all air in tanks, when Iam looking at my air brakes gauge goes to zero.

1 Should I lose air?
2,So when I start up next day or two I have to wait to air up.

Seems like my last couple Coaches would hold air for days.
Just wondering thanks Rick
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Old 01-26-2022, 05:24 AM   #2
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Quote:
Originally Posted by Easy does it View Post
Jim

My. Unit was manufacture Dec 2002 and title 2003. Just for info.
Question on Coach, when I shut down at park site. Sometimes I just set my auto level ,Works as should stays level.But next day it seems to lose all air in tanks, when Iam looking at my air brakes gauge goes to zero.

1 Should I lose air?
2,So when I start up next day or two I have to wait to air up.

Seems like my last couple Coaches would hold air for days.
Just wondering thanks Rick

Yes, you have a leak/leaks.


A spray bottle with kiddie bubbles in it will help locate the leak/leaks.


Be sure to use safety stands before going under the coach.


[Mod Edit]
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Old 01-26-2022, 06:24 AM   #3
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[Mod Edit]



But here is a post I did last month.
https://www.irv2.com/forums/f115/pre...ng-562359.html


I ended up having multiple leaks, mostly coming from the Pressure Protection Valves. I the above post I included an air schematic that also listed parts. It was not exactly the same but close enough so I could figure it out.
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Old 01-26-2022, 08:16 AM   #4
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Also bags dont leak down only tanks. I will look at diagram thanks
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Old 01-26-2022, 09:18 AM   #5
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If you look at the schematic in the linked post there are check valves in the system to separate the leveling system from the braking. This is for safety in case something happens with leveling or other parts of the system you will still have braking.



I found most of my leaks were from the PPV's. But to replace the PPV's you have to remove lines etc so it took several attempts to get them all stopped, had to buy a couple of new fittings.



Also, after going through all of that I decided it would be prudent to carry some emergency supplies for the air system which included pieces of hose/tubing, fittings, and unions.



Best thing to do it use a spray bottle of soapy water and find the leaks. I built a set of ramps so I could fit underneath and drop all the air. And I didn't want to rely on my jacks.
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Old 01-26-2022, 02:08 PM   #6
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Welcome to the club. Almost every air ride coach out there (including new) has multiple leaks.

Some of the guys are using a sonic leak detector from Amazon. A lot of the leaks will be where the small air tubing inserts into the push-in fitting. You can remove the air line and snip off 1/4" and reinsert it stopping many of the small leaks.
The air solenoids are also a source of leaks. Most of these can be rebuilt with inexpensive O-rings.
Best of luck!
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Old 01-26-2022, 02:39 PM   #7
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Mine leaks also, when it gets cold sometimes the lh front goes flat and the rest stays up, and my firestone system doesnt have a back up compressor you have to run teh engine to build up air. I have tried to find more leaks but just cannot find them all. Good luck
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Old 01-26-2022, 05:15 PM   #8
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Mine leaks down too but the aux air pump keeps the coach level. BTW, I would suggest that you create a signature showing the make and model of you coach. It will help folks to answer your questions!
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Old 01-26-2022, 06:34 PM   #9
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Quote:
Originally Posted by Easy does it View Post
Also bags dont leak down only tanks. I will look at diagram thanks
Small leaks on these press on fittings, become bigger leaks as the temperature drops !
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