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Topic: Air Leak (Read 569 times) previous topic - next topic

Air Leak

I recently had some rear brake work done on my GV.  Arrived at the coach this AM and the drivers side front and back air bags were completely deflated right side was fine.  I purposely left the auto level in the off mode to test it this was because the time before when I arrived to storage to check on it all the bags were deflated.  Do you think when the brakes were replaced on the rear they created a leak?  The rear brake plungers( not sure what they are called) were replaced as well.  What do you all suggest?

Thanks
Woodie
Woodie Lee Jr
93 U300. 40'
6V92ta

Re: Air Leak

Reply #1 –
Woodie,
The front and rear air bag system plumbing are seperate.
If they caused a leak at the left rear and it leaked down it would load the left front and make it appear to have also leaked down.
Raise and level the coach, turn the level system off, measure and record the airbag measurements. Check each 30 minutes to see what is changing, when you figure out what is leaking down you can start the next step, finding that leak!
Can you listen at the left rear for an air
leak? Sometimes you will hear it if it's bad enough.
The only way for air to get out of a air bag is a leak in a bag or line or through one of the solenoid valves or the "O" rings under a solenoid valve on the manifold.
I think all the air bag plumbing would be above where they were working on your brakes but I guess it's possible that they nicked an air line or a bag.
JD
John Duld
1995 U320C SE 40'

Re: Air Leak

Reply #2 –
On other thing I failed to mention all the air was depleted out of both the forward air tanks too.
Woodie Lee Jr
93 U300. 40'
6V92ta

Re: Air Leak

Reply #3 –
Be careful about that coach getting unlevel windshields can shift and pop out of rubber. and could crack.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Air Leak

Reply #4 –
Woodie,
Sounds like you have a leak that is letting the air tanks bleed down. That is a seperate issue from your airbags leaking down. Once the bags are aired up you could dump the tanks and the coach will remain level or up until they leak down.
John Duld
1995 U320C SE 40'

Re: Air Leak

Reply #5 –
It is possible that the mechanic working on the brakes drained the two front tanks (one is for front and other for rear), which would have also drained the air from the rear (wet) tank. It should not however, have drained air from any airbag.
Wyatt
96 U320 40 WTFE, build 4943
84 Toyota Supra towd
2015 Jeep Wrangler towd
Victoria, BC, Canada