Home » Public Forums » GMCnet » Airbag leak down
| Airbag leak down [message #122920] |
Sat, 23 April 2011 17:09  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
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Senior Member |
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My driver's side has always leaked down within a couple of days.
I put a shut-off valve kit on and with the valve Off it takes about 4 days instead of 2, so I have a leak in the controls (ElectroLevel 1) and in the air bag.
Today I sprayed some soapy water on the connections and the bag. Well the bag is leaking at the roll to the cone. The leaks are pinhole size but there are a few of them. I can't see the date code but it does have some cracks there.
There was a spare airbag with the coach. I put some air in and it leaks worse with much less pressure so its not worth installing. The date code on it is DD which I figure is April '78
Is this a precursor to an immanent failure? Or?
Funds are kinda low right now!
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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| Re: [GMCnet] Airbag leak down [message #122922 is a reply to message #122920] |
Sat, 23 April 2011 17:27  |
Richard Sowers Jr
Messages: 24
Registered: January 2005
Karma: 0
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Junior Member |
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Bruce,
I had the same issue with the bags that were on my coach, take a look at this album I shot of what I found inside the bags when I cut them open. Sure glad I never drove on them. All three of my bags were slow leakers but held air.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=19392&cat=4655
Richard Sowers
74 Sequoia
Fayetteville, NC
On Apr 23, 2011, at 6:09 PM, Bruce Hislop wrote:
>
>
> My driver's side has always leaked down within a couple of days.
>
> I put a shut-off valve kit on and with the valve Off it takes about 4 days instead of 2, so I have a leak in the controls (ElectroLevel 1) and in the air bag.
>
> Today I sprayed some soapy water on the connections and the bag. Well the bag is leaking at the roll to the cone. The leaks are pinhole size but there are a few of them. I can't see the date code but it does have some cracks there.
>
> There was a spare airbag with the coach. I put some air in and it leaks worse with much less pressure so its not worth installing. The date code on it is DD which I figure is April '78
>
> Is this a precursor to an immanent failure? Or?
>
> Funds are kinda low right now!
>
> --
> Bruce Hislop,
> S. Ontario Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI and ESC.
> Hubler front end and rear disk brakes are finally HERE!:)
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Airbag leak down [message #122936 is a reply to message #122931] |
Sat, 23 April 2011 19:17 |
gene1
Messages: 50
Registered: February 2004
Location: Southern California
Karma: 0
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Member |
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I just installed a Silvertone on the left side. At the same pressure as the
right side, it lifts to about the same height. I haven't actually measured
it at full pressure, using the system to raise it with the on-board pump to
see what the height is on both sides, I used my big compressor to inflate it
to about 100psi, then set the system to travel. Haven't measured the final
pressure on both sides.
The old bag that exploded at full system pressure, always leaked down in a
few days. Now both sides stay up without using the shut offs.
I'm driving it up to the King City GMCWS rally on Tues/Wed. It will be
interesting to see how the ride is with two different air bags.
Regards, Gene 76 Eleganza North County San Diego
----- Original Message -----
From: "Dan Gregg" <gregg_dan@hotmail.com>
To: <gmclist@temp.gmcnet.org>
Sent: Saturday, April 23, 2011 4:54 PM
Subject: Re: [GMCnet] Airbag leak down
>
>
> RF_Burns wrote on Sat, 23 April 2011 17:54
>> My spare has those abrasion marks on each end and leak there.
>>
>> Anyone know anything about the "Silvertone Style" direct replacement bag
>> that JimK has? I like the physics of the OEM setup and would like to
>> stick with it for now.
>
>
> Bruce, I have seen this bag a couple of different times. The price can't
> be beat. It should do ok going down the road. I would not hesitate to use
> it if I did not have the Q bags. Except, I use our bags to level the
> coach, a lot. This bag does not look like it has the travel of the
> original or the Q bags. I see that as the only drawback. Some folks use
> boards to level the coach, I don't. If you do not need the full travel you
> will probably like the Silverton setup. There is likely no cheaper priced
> bag as the Silverton, other than the one out of the Phoenix area. That one
> looks pretty "stiff" to me, but I have not seen it in action.
> Dan
> --
> Dan & Teri Gregg
>
> http://danandteri.blogspot.com/
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Airbag leak down [message #122942 is a reply to message #122936] |
Sat, 23 April 2011 20:06 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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this is great
we will finally meet
gene
On Sat, Apr 23, 2011 at 5:17 PM, gene1@daygotours <gene1@daygotours.com>wrote:
> I just installed a Silvertone on the left side. At the same pressure as the
> right side, it lifts to about the same height. I haven't actually measured
> it at full pressure, using the system to raise it with the on-board pump to
> see what the height is on both sides, I used my big compressor to inflate
> it
> to about 100psi, then set the system to travel. Haven't measured the final
> pressure on both sides.
>
> The old bag that exploded at full system pressure, always leaked down in a
> few days. Now both sides stay up without using the shut offs.
> I'm driving it up to the King City GMCWS rally on Tues/Wed. It will be
> interesting to see how the ride is with two different air bags.
> Regards, Gene 76 Eleganza North County San Diego
>
>
> ----- Original Message -----
> From: "Dan Gregg" <gregg_dan@hotmail.com>
> To: <gmclist@temp.gmcnet.org>
> Sent: Saturday, April 23, 2011 4:54 PM
> Subject: Re: [GMCnet] Airbag leak down
>
>
> >
> >
> > RF_Burns wrote on Sat, 23 April 2011 17:54
> >> My spare has those abrasion marks on each end and leak there.
> >>
> >> Anyone know anything about the "Silvertone Style" direct replacement bag
> >> that JimK has? I like the physics of the OEM setup and would like to
> >> stick with it for now.
> >
> >
> > Bruce, I have seen this bag a couple of different times. The price can't
> > be beat. It should do ok going down the road. I would not hesitate to use
> > it if I did not have the Q bags. Except, I use our bags to level the
> > coach, a lot. This bag does not look like it has the travel of the
> > original or the Q bags. I see that as the only drawback. Some folks use
> > boards to level the coach, I don't. If you do not need the full travel
> you
> > will probably like the Silverton setup. There is likely no cheaper priced
> > bag as the Silverton, other than the one out of the Phoenix area. That
> one
> > looks pretty "stiff" to me, but I have not seen it in action.
> > Dan
> > --
> > Dan & Teri Gregg
> >
> > http://danandteri.blogspot.com/
> >
> >
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Airbag leak down [message #122943 is a reply to message #122929] |
Sat, 23 April 2011 20:13 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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The Silverton bags has almost all the travel of the original and you
cannot beat the price.
On Sat, Apr 23, 2011 at 4:34 PM, Mr.erf ERFisher <mr.erfisher@gmail.com> wrote:
> sometimes it is the O ring inside the nut......
>
> is that where the leak is?
> gene
>
>
>
> On Sat, Apr 23, 2011 at 3:09 PM, Bruce Hislop <bruce@perthcomm.com> wrote:
>
>>
>>
>> My driver's side has always leaked down within a couple of days.
>>
>> I put a shut-off valve kit on and with the valve Off it takes about 4 days
>> instead of 2, so I have a  leak in the controls (ElectroLevel 1) and in the
>> air bag.
>>
>> Today I sprayed some soapy water on the connections and the bag. Well the
>> bag is leaking at the roll to the cone. Â The leaks are pinhole size but
>> there are a few of them. Â I can't see the date code but it does have some
>> cracks there.
>>
>> There was a spare airbag with the coach. Â I put some air in and it leaks
>> worse with much less pressure so its not worth installing. Â The date code on
>> it is DD which I figure is April '78
>>
>> Is this a precursor to an immanent failure? Or?
>>
>> Funds are kinda low right now!
>>
>> --
>> Bruce Hislop,
>> S. Ontario Canada
>> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI and ESC.
>> Hubler front end and rear disk brakes are finally HERE!:)
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Airbag leak down [message #122945 is a reply to message #122943] |
Sat, 23 April 2011 20:15 |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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Jim,
Do you carry the Silverton bags?
I'm looking for a spare.
Thank You,
Tom Eckert N2VWN
73 Glacier
Oakland, TN
On Sat, Apr 23, 2011 at 8:13 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> The Silverton bags has almost all the travel of the original and you
> cannot beat the price.
>
> On Sat, Apr 23, 2011 at 4:34 PM, Mr.erf ERFisher <mr.erfisher@gmail.com>
> wrote:
> > sometimes it is the O ring inside the nut......
> >
> > is that where the leak is?
> > gene
> >
> >
> >
> > On Sat, Apr 23, 2011 at 3:09 PM, Bruce Hislop <bruce@perthcomm.com>
> wrote:
> >
> >>
> >>
> >> My driver's side has always leaked down within a couple of days.
> >>
> >> I put a shut-off valve kit on and with the valve Off it takes about 4
> days
> >> instead of 2, so I have a leak in the controls (ElectroLevel 1) and in
> the
> >> air bag.
> >>
> >> Today I sprayed some soapy water on the connections and the bag. Well
> the
> >> bag is leaking at the roll to the cone. The leaks are pinhole size but
> >> there are a few of them. I can't see the date code but it does have
> some
> >> cracks there.
> >>
> >> There was a spare airbag with the coach. I put some air in and it leaks
> >> worse with much less pressure so its not worth installing. The date
> code on
> >> it is DD which I figure is April '78
> >>
> >> Is this a precursor to an immanent failure? Or?
> >>
> >> Funds are kinda low right now!
> >>
> >> --
> >> Bruce Hislop,
> >> S. Ontario Canada
> >> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI and ESC.
> >> Hubler front end and rear disk brakes are finally HERE!:)
> >> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> >> _______________________________________________
> >> GMCnet mailing list
> >> Unsubscribe or Change List Options:
> >> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >>
> >
> >
> >
> > --
> > Gene Fisher -- 74-23,77PB/ore/ca
> > “Give a man a fish; you have fed him for today --- give him a URL and
> > -------
> > http://gmcmotorhome.info/
> > Alternator Protection Cable
> > http://gmcmotorhome.info/APC.html
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Airbag leak down [message #122949 is a reply to message #122945] |
Sat, 23 April 2011 20:26 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Tom,
We stock them here.
We sell lot of the Q Bags and few of the Silverton.
For the price you can't beat it.
On Sat, Apr 23, 2011 at 6:15 PM, Tom Eckert <gmcrv1@gmail.com> wrote:
> Jim,
>
> Do you carry the Silverton bags?
>
> I'm looking for a spare.
>
> Thank You,
>
> Tom Eckert N2VWN
> 73 Glacier
> Oakland, TN
>
> On Sat, Apr 23, 2011 at 8:13 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
>
>> The Silverton bags has almost all the travel of the original and you
>> cannot beat the price.
>>
>> On Sat, Apr 23, 2011 at 4:34 PM, Mr.erf ERFisher <mr.erfisher@gmail.com>
>> wrote:
>> > sometimes it is the O ring inside the nut......
>> >
>> > is that where the leak is?
>> > gene
>> >
>> >
>> >
>> > On Sat, Apr 23, 2011 at 3:09 PM, Bruce Hislop <bruce@perthcomm.com>
>> wrote:
>> >
>> >>
>> >>
>> >> My driver's side has always leaked down within a couple of days.
>> >>
>> >> I put a shut-off valve kit on and with the valve Off it takes about 4
>> days
>> >> instead of 2, so I have a  leak in the controls (ElectroLevel 1) and in
>> the
>> >> air bag.
>> >>
>> >> Today I sprayed some soapy water on the connections and the bag. Well
>> the
>> >> bag is leaking at the roll to the cone. Â The leaks are pinhole size but
>> >> there are a few of them. Â I can't see the date code but it does have
>> some
>> >> cracks there.
>> >>
>> >> There was a spare airbag with the coach. Â I put some air in and it leaks
>> >> worse with much less pressure so its not worth installing. Â The date
>> code on
>> >> it is DD which I figure is April '78
>> >>
>> >> Is this a precursor to an immanent failure? Or?
>> >>
>> >> Funds are kinda low right now!
>> >>
>> >> --
>> >> Bruce Hislop,
>> >> S. Ontario Canada
>> >> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI and ESC.
>> >> Hubler front end and rear disk brakes are finally HERE!:)
>> >> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
>> >> _______________________________________________
>> >> GMCnet mailing list
>> >> Unsubscribe or Change List Options:
>> >> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> >>
>> >
>> >
>> >
>> > --
>> > Gene Fisher -- 74-23,77PB/ore/ca
>> > “Give a man a fish; you have fed him for today --- give him a URL and
>> > -------
>> > http://gmcmotorhome.info/
>> > Alternator Protection Cable
>> > http://gmcmotorhome.info/APC.html
>> > _______________________________________________
>> > GMCnet mailing list
>> > Unsubscribe or Change List Options:
>> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> >
>>
>>
>>
>> --
>> Jim Kanomata
>> Applied/GMC, Fremont,CA
>> jimk@appliedairfilters.com
>> http://www.appliedgmc.com
>> 1-800-752-7502
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Airbag leak down [message #122951 is a reply to message #122949] |
Sat, 23 April 2011 21:02 |
jhb1
Messages: 303
Registered: February 2004
Karma: 0
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Senior Member |
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Jim how many Quad bags are in service now I hope to install my set in the coming weeks
Thanks
John H. Bell
77 Royale; QuadBag,Manny OneTon,Honda EV4010, FITech
Montreal Qc.
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| Re: [GMCnet] Airbag leak down [message #122955 is a reply to message #122920] |
Sat, 23 April 2011 21:05 |
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Based on your description I think you're heading for a slow and painful
death. Start looking for something to replace the airbags. Multiple options
abound.
Byron Songer
1978 Royale by Coachmen
Louisville, KY
Personal - http://web.me.com/bnsonger
Eastern States - http://www.gmceast.com
Bruce Hislop wrote:
>
>
> My driver's side has always leaked down within a couple of days.
>
> I put a shut-off valve kit on and with the valve Off it takes about 4 days
> instead of 2, so I have a leak in the controls (ElectroLevel 1) and in the
> air bag.
>
> Today I sprayed some soapy water on the connections and the bag. Well the bag
> is leaking at the roll to the cone. The leaks are pinhole size but there are
> a few of them. I can't see the date code but it does have some cracks there.
>
> There was a spare airbag with the coach. I put some air in and it leaks worse
> with much less pressure so its not worth installing. The date code on it is
> DD which I figure is April '78
>
> Is this a precursor to an immanent failure? Or?
>
> Funds are kinda low right now!
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
--
Byron Songer
Full-timing to enjoy the USA
Former owner but still an admirer
GMC paint schemes at -
http://www.songerconsulting.net
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| Re: [GMCnet] Airbag leak down [message #122998 is a reply to message #122929] |
Sun, 24 April 2011 09:25 |
MikeT
Messages: 225
Registered: November 2009
Location: Marine City, Michigan
Karma: 0
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Senior Member |
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Can you fill the airbag off the coach and try to see if the O-ring is leaking? If so, what max psi off the coach so it doesn't blow up in my face?
Thanks
Mike Thomas
Marine City, MI
77 ex Palm Beach
[Updated on: Sun, 24 April 2011 09:26] Report message to a moderator |
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| Re: Airbag leak down [message #123043 is a reply to message #122920] |
Sun, 24 April 2011 13:31 |
WayneB
Messages: 233
Registered: July 2008
Location: Ontario, Canada
Karma: 0
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Senior Member |
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Changed my 14 year old original (1996)air bags which would stay inflated the whole Canadian winter (5 months)for a couple of new Firestone bags and found the new ones are pourus and leak from the surface of the bag over a period of 2 to 3 months!
I have also seen this with the air springs on my Range Rovers(especially in the cold winter months) and put it down to the hand made manufacturing process being hit and miss (sidewall rubber thickness variations?).
Hand made Dunlop racing tyres also can leak air from through their thinly rubbered sidewalls ,but withstand heat, load and high speeds without failure so I dont worry too much about a bit of air leaking from the body of the airbags myself.
1976 23' GMCII By Explorer
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