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Old 11-27-2022, 09:47 AM   #1
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Air Suspension Status When Stored

When you store your Palazzo motorhome should the air suspension be dumped after it is parked and air brake on and why?
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Old 11-27-2022, 10:12 AM   #2
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JMHO; dumping suspension and leveling with the jacks relieves stain on the air suspension bags.
My coach is on the jacks 340 days a year and no issue with the air bags (no cracking evident) in 13 years of ownership.

The park brake is spring applied, and air released; so set the brake whenever you park and before you level.
If you have no (or low) air in the system, the park brake is automatically ON.

RV Tech Library - Introduction to Air Brakes
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Old 11-27-2022, 11:13 AM   #3
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Interest discussion on this subject in this thread: https://www.rv.net/forum/index.cfm/f...print/true.cfm. I store the motorhome on a level site with the jacks up..........so do I need to drop the air while it is stored?
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Old 11-27-2022, 05:35 PM   #4
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I don’t have a palazzo, but do have a class A. With the air suspension at ride height, I place cribbing under my jacks (full retracted). I then dump my air so the coach rests on the jack feet in the fully retracted position on the cribbing.
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Old 11-27-2022, 07:33 PM   #5
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So far I don't bother to dump, it leaks down on its own after a few days. I keep jacks up, tried storing with jacks down on my gas MH and didn't like the rams being exposed and the feet collecting water from rain.

I use my MH pretty regularly so I don't worry about flat spotting the tires or anything.
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Old 11-28-2022, 05:26 PM   #6
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Thanks for everyone's feedback. I called Thor technical support and they referred me to Freightliner customer service to see what they recommend as a best practice and waiting for a response.
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Old 11-30-2022, 08:01 AM   #7
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Freightliner technical service remarks: This would be up to you. The air bags have stops internal and when air dumped this will rest on them if jacks are up. If you do not dump the air, the air will leak off in time, and this depending on walking around in coach, wind, etc, for the leveling valves are using air until no air on suspension, depleted and resting on the stops.

Good recommendation to air down when stored based on post #16 in this thread: https://www.irv2.com/forums/f103/do-...-369082-2.html.
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Old 11-30-2022, 08:06 AM   #8
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Like jharrell said…..really doesn’t matter if you dump or not…..as the air leaks out anyway in 24-72 hours.

They sit like this on dealer lots, I see no harm in it.
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Old 11-30-2022, 08:58 AM   #9
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Quote:
Originally Posted by Camp CA;6369283Good recommendation to air down when stored based on post #16 in this thread: [url
https://www.irv2.com/forums/f103/do-you-dump-suspension-when-parking-369082-2.html[/url].
If slowly settling unevenly would pop a windshield or otherwise tweak something imagine what hitting a bump on one side at highway speeds would do, or even worse going into a Walmart parking lot off angle!

This is not not a concern to me, the chassis is under many times more dynamic stress underway than this, not that it hurts to dump, just I don't think it helps either.

When I first got it I always dumped, but I was spending a lot of time underneath checking everything out, so would need to air up again or I was taking it out again in a few days so it was inconvenient that it was always dumped, so I got out of the habit and realized it just doesn't matter and many times I would forget and leave the dump switch on which is not fun to drive.

Only time I dump now is to level so its as low as possible after leveling done and try and be sure to remember to flip it back.

What's really annoying is the low air alarm that screams after starting up after it leaked way down and takes a while to build back up. High idle helps air back up quicker but it would be nice if the alarm didn't sound until you tried to put in gear or after a couple minutes or something less ear piercing for an otherwise normal situation, not like I can miss the giant red low air message on the dash display.
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