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| [GMCnet] Inoperative Quad Airbag system [message #360979] |
Sat, 19 December 2020 12:13  |
Kenneth Doyle
Messages: 9
Registered: September 2020
Karma: 0
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Junior Member |
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My 1975 GMC has a quadbag system installed by Jim Bounds many years ago. It
has never given me any problems except for some leakage, generally taking a
couple of days or longer to leak down.
I had some engine and other miscellaneous work performed this past week.
Improvements included wiring the radio to the ignition switch, which had
previously been wired to the house battery. The horn relay was also
replaced and a new horn was installed. Also some carburetor work. But no
work was performed on the airbag system. It was working normally.
I drove it home with the bags inflated, but the next morning the bags were
deflated on both sides. When activated, the system would not raise the
coach. or inflate the bags. The air compressor operates to fill the air
tank. I tried to inflate the bags, on both sides, at the air value next to
the system shutoff valves (at the wheels). Neither side would inflate. The
end shut-off valve was closed, the two valves leading to the bags were
open. The airbag air gauges on both sides of the coach would register 75lbs
of pressure, and hold that pressure, unless the end shut-off valve was
opened.
What would cause the system to totally fail in this manner? Could one of
more sensors be out, or was electrical power severed to the system that
during the horn and radio rewiring? Suggestions welcome.
Thanks,
Ken Doyle
1975 Glenbrook
SE Kansas
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| Re: [GMCnet] Inoperative Quad Airbag system [message #361020 is a reply to message #361012] |
Sun, 20 December 2020 12:37  |
Kenneth Doyle
Messages: 9
Registered: September 2020
Karma: 0
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Junior Member |
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Matt, I prefer the possibility that feed was dropped to the switch bank
rather than a contaminated solenoid cluster. I will pursue that first. The
panel for the airbag system says Power Level II. I will speak with the
mechanic tomorrow and perhaps I can get him to swing by to look at it.
We only listen to the coach radio when on the road. I've left it on several
times after exiting the coach for extended periods. That was the reason for
moving radio power to the ignition.
Thanks for your input.
Ken
On Sun, Dec 20, 2020, 9:23 AM Matt Colie via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Ken,
> Is it also a refit with Sullybags?
> The Firestone airspings in the Sully set are know to sometimes block the
> fill ports when all the way down.
>
> By other remarks, I am guessing that the coach is an ElectroLevel.
> If that is the case, then it is highly likely that they disconnected the
> feed to the switch bank.
>
> Now all you have to do is find out where they dropped it? They probably
> disconnected it to attach the feed for the stereo.
>
> Speaking of, why do you want the radio off the main engine battery?
>
> Matt
> --
> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
> GMCES
> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
> Brakes with Applied Control Arms
> SE Michigan - Near DTW - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] Inoperative Quad Airbag system [message #361046 is a reply to message #361020] |
Sun, 20 December 2020 22:31 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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We supply a spanner socket to enable you to disassemble .
No need to purchase new solenoid valves.
It is unusual to have both sides leaking the same way.
On Sun, Dec 20, 2020 at 10:38 AM Kenneth Doyle via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Matt, I prefer the possibility that feed was dropped to the switch bank
> rather than a contaminated solenoid cluster. I will pursue that first. The
> panel for the airbag system says Power Level II. I will speak with the
> mechanic tomorrow and perhaps I can get him to swing by to look at it.
>
> We only listen to the coach radio when on the road. I've left it on several
> times after exiting the coach for extended periods. That was the reason for
> moving radio power to the ignition.
>
> Thanks for your input.
>
> Ken
>
>
>
> On Sun, Dec 20, 2020, 9:23 AM Matt Colie via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Ken,
>> Is it also a refit with Sullybags?
>> The Firestone airspings in the Sully set are know to sometimes block the
>> fill ports when all the way down.
>>
>> By other remarks, I am guessing that the coach is an ElectroLevel.
>> If that is the case, then it is highly likely that they disconnected the
>> feed to the switch bank.
>>
>> Now all you have to do is find out where they dropped it? They probably
>> disconnected it to attach the feed for the stereo.
>>
>> Speaking of, why do you want the radio off the main engine battery?
>>
>> Matt
>> --
>> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
>> GMCES
>> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
>> Brakes with Applied Control Arms
>> SE Michigan - Near DTW - Twixt A2 and Detroit
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.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] Inoperative Quad Airbag system [message #361054 is a reply to message #361046] |
Mon, 21 December 2020 09:19 |
Kenneth Doyle
Messages: 9
Registered: September 2020
Karma: 0
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Junior Member |
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Why would the bags not inflate with air pressure being applied at the bags
themselves with the valve to the rest of the system closed, but valves to
the bags open?
Thanks, Ken
On Sun, Dec 20, 2020, 10:32 PM Jim Kanomata via Gmclist <
gmclist@list.gmcnet.org> wrote:
> We supply a spanner socket to enable you to disassemble .
> No need to purchase new solenoid valves.
> It is unusual to have both sides leaking the same way.
>
>
> On Sun, Dec 20, 2020 at 10:38 AM Kenneth Doyle via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Matt, I prefer the possibility that feed was dropped to the switch bank
>> rather than a contaminated solenoid cluster. I will pursue that first.
> The
>> panel for the airbag system says Power Level II. I will speak with the
>> mechanic tomorrow and perhaps I can get him to swing by to look at it.
>>
>> We only listen to the coach radio when on the road. I've left it on
> several
>> times after exiting the coach for extended periods. That was the reason
> for
>> moving radio power to the ignition.
>>
>> Thanks for your input.
>>
>> Ken
>>
>>
>>
>> On Sun, Dec 20, 2020, 9:23 AM Matt Colie via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> Ken,
>>> Is it also a refit with Sullybags?
>>> The Firestone airspings in the Sully set are know to sometimes block
> the
>>> fill ports when all the way down.
>>>
>>> By other remarks, I am guessing that the coach is an ElectroLevel.
>>> If that is the case, then it is highly likely that they disconnected
> the
>>> feed to the switch bank.
>>>
>>> Now all you have to do is find out where they dropped it? They
> probably
>>> disconnected it to attach the feed for the stereo.
>>>
>>> Speaking of, why do you want the radio off the main engine battery?
>>>
>>> Matt
>>> --
>>> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
>>> GMCES
>>> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
>>> Brakes with Applied Control Arms
>>> SE Michigan - Near DTW - Twixt A2 and Detroit
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.gmcrvparts.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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