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Old 09-06-2012, 09:30 AM   #1
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Why "Air Dump"?

We are getting ready to go Full Timing in 3 days and I have been reading all the good info. that our fellow experts have given and I want to thank one and all.
I halfway understand the diesel,and most of the thousand switches and buttons inside and out on our 2006 Holiday Rambler, but something I still don't understand is "Air Dump".
What is the purpose of an air dump system?
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Old 09-06-2012, 09:36 AM   #2
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On those motorhomes that have air bags for suspension, "dumping" the air bags lowers the motorhome. This shortens the distance the jacks need to extend when leveling the motorhome.
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Old 09-06-2012, 09:46 AM   #3
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It also allows for leveling without the air bags pulling the axles up.
It is not good for the air bag attachments for this to be done.
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Old 09-06-2012, 10:19 AM   #4
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It also places your steps closer to the ground.
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Old 09-06-2012, 10:33 AM   #5
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It's a shorter fall to the ground when you trip over your dog at the top of the stairs.
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Old 09-06-2012, 11:51 AM   #6
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Plus it's just cool to pull into a campsite with all eyes on the newbie to make a show of releasing air and squatting the bus.

Because you can.
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Old 09-06-2012, 12:04 PM   #7
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So when you park for overnight, you dump the air? Do you dump when refueling or stopping for a bite to eat?

Thinking of a diesel that has air suspention and "dumps".
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Old 09-06-2012, 12:10 PM   #8
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You would only dump the air when setting up camp, when you are going to use the leveling jacks.

There is no need to dump for temporary stops.
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Old 09-06-2012, 12:41 PM   #9
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Quote:
Originally Posted by USMCRET
It's a shorter fall to the ground when you trip over your dog at the top of the stairs.
you've done that too?
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Old 09-06-2012, 12:42 PM   #10
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Plus it's just cool to pull into a campsite with all eyes on the newbie to make a show of releasing air and squatting the bus.

Because you can.
yup.
I usually help release the air by stroking the brake pedal repeatedly. Makes really cool sounds!
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Old 09-06-2012, 04:51 PM   #11
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you've done that too?
I USUALLY exit upright and facing forward, but that hasn't always been the case. I actually did trip over the dog once, resulting in an impromptu impression of a breech birth.
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Old 09-06-2012, 05:24 PM   #12
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It's a shorter fall to the ground when the steps fail to extend!
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Old 09-06-2012, 05:27 PM   #13
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I've done the brake thing (my coach doesn't have an air dump system) but it doesn't seem to lower the coach unless I lift it on the jacks, and then lower it -- but that actually causes the coach to shift forward (because of the trailing arm suspension geometry) which dragged the jack stands -- so I only did it once.

But it sure is nice. I have put installing airdump and leveling on my list

Steve
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Old 09-06-2012, 05:53 PM   #14
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A good air dump helps dust off the parking pad too.
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