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Level Low not so level
My Level Low system bleeds down in 24-36 hours mostly. Right now, I’m backed into a site that slope toward the road so my rear is all the way down and front raised. After said amount of time, the coach bleeds down in the front. It may be in the rear too, but since it’s down already, there’s no way to assess at the moment. I’ve been leaving the control in one of the On positions.Is there someplace I should start at to try to track down the issue? – Ron -
2 Replies
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So your starting at travel height to level?
The only way a bus will sag to on side or the other is if there is a leak between the norgren valve and the bag. Once you turn the key off the air locks from the valve to the bag.
There might be something else out of the ordinary but that is the usual suspect.
If your leaning to much start your leveling process with the bus kneeling or dropped down then raise a corner or two to level. Sometimes this helps with air loss until you can fix it.
Later
bv
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on, chasing air leaks is an art that requires equal parts of patience, luck, and a willingness to either spend a lot of money or get your hands dirty.
Anecdotally your coach is at or nearing the age when air leaks become prevalent.
But to address your concern specifically, as Bernie said, with the key off the air is supposed to be “locked” in the air bags so you have a limited area to look for the leak causing the coach to drop or lean. Start with the air bags and verify they are not leaking. If I make that sound easy it is not. The air bag can leak around the top or bottom seal where the rubber is sealed or bonded to the top plate or bottom can. The seal at the bottom can is shrouded by the “piston” that the air bag rolls over as it flexes up and down.
Easier things to check are the fittings from the top of the air bags and to the Norgren valves. The Norgren valve can leak internally as well as leak to the exhaust so look for leaks at the fittings, end caps as well as the exhaust.
In you case you are going to have to get under the coach, BUT NEVER EVER DO THAT UNLESS THE CHASSIS IS SUPPORTED AT THE CHASSIS SUPPORT POINTS.
Once you are under it, between the two steer axle wheels you will see almost every potential leak spot and soapy water is a good start. There are leak detector devices but they are useless in detecting leaks in a rubber object like an air bag.
If I were to guess you probably have a leaky push in air line fitting. But your coach is also at the age when instead of spending money to have a shop chase leaks you might give some thought to replacing air bags, Norgren valves and all fittings with compression fittings.
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