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Old 06-06-2018, 09:01 PM   #1
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Forest River Owners Club
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Air Bags...Not holding pressure

I have a 2015 Coachmen Leprechaun 320 BH with factory installed airbags in the suspension. We inflate them to about 75 psi when we leave on a trip as we have found that ths gives us the optimal riding comfort. We have checked this with the factory and they agree it is a good setting.

Our problem is that about every three days they have to be reinflated because the pressure has dropeed to 40-45 psi. I have been told by some that this is normal...others say no it is not. So what is the experience of those here? I had suspension air bags on a GMC Sierra and they would not lose a pound in a month. If this is not normal and some have experienced it as well, what was your problem and how did you fix it?

THX IN ADVANCE!!

TJ
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Old 06-06-2018, 10:01 PM   #2
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Zero experience withat that coach, sorry.

However. I have an ancient Southwind on a p30 chassis with the original front bags. The drivers side developed a small mystery leak some time ago, blew the bags up to max pressure, checked everything with soapy water, found that the schrader valve on the inlet was the cause, replaced both with premium valves from napa as a precaution.

The cause was a small piece of rubber from a fill line that had somewhat blocked the valve, not allowing it to fully seat.

Not sure how your system fills or is set up. Might be soapy water time...
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Old 06-07-2018, 03:38 AM   #3
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No, that is not normal. Have a system on our Lexington and keep it at 70 psi. It will loose a few lbs of psi over a period of months, but never more that 5-8 psi. Like a tire, the bags will loose a few psi over time, but not 30-40 in a few weeks.
First and easiest thing to check is to make sure the schrader valves are tight. Those are the little spring loaded valves that are screwed into the valve stem.
You can buy a simple schrader valve tool at just about any auto store. for a buck or two. It's notched on one end and you simply tighten the valve. If loose or not seated all the way, it will leak air.
Also, you can get a little kit that will have some new valves included. Always nice to have a few on hand.
If that dosen't solve the problem, then you have a leak in a line or the bags. Either will need to be replaced as their is no "repair".
Grumpy
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