| Re: [GMCnet] Inoperative Quad Airbag system [message #360980] |
Sat, 19 December 2020 12:23  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma:
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Senior Member |
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Don't blame the bag system.
There is a great chance the solenoid valves might have a piece of rust from
the air tank .
On Sat, Dec 19, 2020 at 10:14 AM Kenneth Doyle via Gmclist <
gmclist@list.gmcnet.org> wrote:
> 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
> _______________________________________________
> GMCnet mailing list
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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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