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Air bag not deflateing

Started to do the air bag replacement today and after putting in the safety blocks dumped air. All the wheels except the right front deflated. I tried to use the down arrow, dump arrows and the right front still had air. I unhooked the air line to the rear bag on the right front wheel and got them deflated. I am going to check with the PO tomorrow an make sure he didn't replace the bags when he had the coach as they look too good to be 17 years old. Back to the air problem, has anyone ran across this happening to a pair of air bags?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Air bag not deflateing

Reply #1 –
cman,

While you have it blocked up look for a dirt/mud dauber nest that has been built in the exhaust port on your front HWH 6pack.  Even hid behind the pressure switch for that side those little buggers can get to the exhaust port and stop them up.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Air bag not deflateing

Reply #2 –
Quote from: craneman –
I tried to use the down arrow, dump arrows and the right front still had air.

has anyone ran across this happening to a pair of air bags?


Quote from: Pamela & Mike –

While you have it blocked up look for a dirt/mud dauber nest that has been built in the exhaust port on your front HWH 6pack.  Even hid behind the pressure switch for that side those little buggers can get to the exhaust port and stop them up.

We have had this happen several times.  As Pamela and Mike say, ours has always been a mud dauber nest.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Air bag not deflateing

Reply #3 –
Quote from: craneman –
they look too good to be 17 years old.
I replaced mine when the rubber started to crack and drop off exposing the cord.  They didn't leak, but figured it was only a matter time before one failed.  If no cracks or cord showing maybe no need to replace, a lot of work. 
Jerry Whiteaker former owner 96 U270  36' #4831 Austin,TX-Owner Mods LCD TV w/front cabinet rebuild - LCD TV bedroom - Dual Central AC, either can cool coach w 30 amp - Skylights at roof AC openings - Drop ceiling for ducting of AC - Shower skylight white gelcoat/wood/epoxy frame - Air Springs/Shocks replaced - 2014 CRV - 8K Home Solar - Chevy Volt

Re: Air bag not deflateing

Reply #4 –
We had the mud dauber thing also could not see it but with a small object was able to break it out and now works as designed
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Air bag not deflateing

Reply #5 –
I have seen a relay in the six pack go bad...
Mike and Mari
'98  36 270 WTFE
Build #5272
Club #17504

Re: Air bag not deflateing

Reply #6 –
Update when I said the bags on the right front would not deflate, I was referring to the fact that they still held air after I put the safety blocks in. They will deflate with weight on the coach all the way down. After I change the air bags I will try to trace the problem. The PO (Ron) told me they are the original air bags and at 17 years old I am just going to change them all for safety's sake.
 I finished the right front pair today and will post some pictures on how I got the front bag 90 deg. fitting and nut off. Between jobs is when I am working on the project so a few days before I will be finished.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Air bag not deflateing

Reply #7 –
I gained access to the front of the front airbags by cutting holes. On the driver side the hole is in the metal to the rear of the genset fan motor. On the passenger side, i installed a round access panel in the wall of the stair well. Barry B took pictures which he posted on his BeamAlarm web site.
Wyatt
96 U320 40 WTFE, build 4943
84 Toyota Supra towd
2015 Jeep Wrangler towd
Victoria, BC, Canada