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Old 11-07-2014, 01:29 PM   #1
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Tricks to find air leaks in suspension leveling system

I have an air leak on the driver side of my coach, I lose about 1 inch in about 15 minutes, I cant tell if it is the front or rear, I know to climb underneath and spray with water and soap but I was wondering if there are any tricks other than that to narrow down if it is a coupler, hose or airbag and the location?
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Old 11-07-2014, 02:27 PM   #2
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You got it, air it up and/or plug the coach into shop air. Crawl under and start soaping up every fitting you can find. Sometimes (usually) you need a lot of patience, small leaks can take awhile and plenty of soap to see the bubbles. Of course if you can hear it leaking that's the easiest to find...

What I do in the shop is put the coach up on the lift, hook the coach to shop air regulated at 125, and grab a good flashlight and some thick soapy solution and start spraying every fitting I can find, spray the fitting and just stare at it for a few seconds, rub the soap around the fitting some more and really stare at it some more before moving on to the next one.

Good luck, air leaks can be the most frustrating thing ever!
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Old 11-07-2014, 03:15 PM   #3
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Quote:
Originally Posted by Ssgritton View Post
I have an air leak on the driver side of my coach, I lose about 1 inch in about 15 minutes, I cant tell if it is the front or rear, I know to climb underneath and spray with water and soap but I was wondering if there are any tricks other than that to narrow down if it is a coupler, hose or airbag and the location?
This bad of a air leak should not be very hard to find......Your air dryer must be exhausting often.....
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Old 11-07-2014, 03:49 PM   #4
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I just went through the same thing. I had a very loud leak comming from the rear end near the tag. She lowered and never came back up so only choice I had was to drive it to my local Cummin dealer. They discovered a bad regulator valve and $400 later should be back to normal.
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Old 11-08-2014, 09:28 PM   #5
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Air or other leveling?

If ride valve internals out of adjustment it can have the "too high" valve open when at ride height.

So to test find the ride height valve and you can disconnect the link and move it a bit.

Some can be reached from outside.

We posted some time ago regarding this so you can search our posts to read them.

DO NOT GET UNDER YOUR COACH UNLESS SUPPORTED!

The coach can drop quite a bit so jack stands or other supports need to be there.

We have kick downs that in rested state give good room but yours may be different.
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