Thread: SLS Air Bags again

I had one of the air lines rub through 6 inches from the air bag but would only go down intermintatly worth checking

the rh bag has a leak. you need to spray soapy water around the lower half of it, then get someone to stand on the rear of the vehicle and jump up and down, or park it on the same uneven ground, you will soon see the problem.

jc

why wouldnt the bag go down when you put more weight on it?

The important bit is whether it pumps itself back up to normal ride height,, and how fast it does it.

The bigger the bag hole, the more the compressor has to work, until it just fails.

I agree with JC. Mine was doing exactly the same. 2 x new Dunlop bags and presto, problem solved.

The hole in the bag is to small to see. And will seal or leak dependent on where the role/fold is in the bag. Thus the reason for doing it at different ground levels.

Took me a while to get my head around it to. Pretty sure I followed JC's advice for mine with the soapy water test etc.

Good luck

Dave

Originally Posted by Pedro_The_Swift

why wouldnt the bag go down when you put more weight on it?

.

Any reply to this is going to make me sound like a **** , given that I am already condemmed for being a kiwi , why not .

I would expect most to be able to assume the meaning of "going down" in the context of my post , as opposed to what would normally happen when more weight was added to the back of the vehicle and the airbag "compressing slightly" . But since maybe all of us did not pass year 10 physic's , "going down" in my post refers to the bag deflating , the axle sitting on the bump stop . Making it cock a leg , look like its going to take a pee , etc etc etc .

On the bright side it makes it easier to get in and out of when it does

I will start looking at it in a few weeks when I get some time , as I said in the post my first reaction was to change the bags and undoubtably thats what will happen I guess , just wants to make sure someone else had not had a simmilar issue that indicated it was the valving to save some time . Oh well ....

If you don't address it soon, you'll be up for a new compressor as well. The LR unit is only good for 5% duty cycle, so it will fail, if it is constantly pumping up the air bag.

Maybe a hole or the airbag just failing in the fold area. Soapy water may pick it up (didn't in mine), but taking the airbag out and testing it in a bucket / putting soapy water on it fully extended made it pretty obvious where the air was coming from - it was from an area about 4 cm square. Just small bubbles of air over a large area. Most probably when folded, they wouldn't leak all that much, due to the fabric being compressed.

If its any help(this time)
99.9999999% of airbags "going down" (on this Forum) are leaks---
the odds are I see new bags in your future

Originally Posted by Pedro_The_Swift

If its any help(this time)
99.9999999% of airbags "going down" (on this Forum) are leaks---
the odds are I see new bags in your future

Glad someone read the post with the sence of humor it required . Have to say I agree and was my first plan , alas the parts guys doubted it .
Anyway will get off my but tomorrow and clean out the shed and look at dropping the bag out , probably the best way to test for leaks by the sound of it . How much pressure can these things take for a leak test off the vehicle , rough calc would say more than my 100psi crappy compressor .

Thanks
Chris