| leaking height control valve [message #299472] |
Fri, 22 April 2016 11:28  |
KB
Messages: 1262
Registered: September 2009
Karma: 0
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Senior Member |
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I bought new height control valves a few years ago from Applied.
One of the valves now has a leak; it won't shut off when set to
travel. Once it reaches travel height, it just continuously hisses out
the port at the valve. This is on a 75 coach, so has the earlier style valves.
Any thoughts on what's wrong with it? Is it fixable, or do I need
to spring for another new valve?
thanks,
Karen
1975 26'
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| Re: leaking height control valve [message #299478 is a reply to message #299472] |
Fri, 22 April 2016 12:10  |
mercdave
Messages: 45
Registered: May 2014
Karma: 2
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When I took mine apart I found that little particles of aluminum corrosion had gotten into the valves and was holding them open. The valves that were badly damaged I replaced with ones from some spares. The valves are all based on Schrader valves but some have different tips and all seem to have stiffer spring rates than tire valves. It seems that moisture is a real enemy of these. If it were mine, and I knew that the valves were fairly new, I would remove the control link, block the bogies, pump up the compressor, and then cycle the bags up and down once or twice to see if I could flush out the valves. Maybe someone else on the net will have better suggestions.
Dave L
Lynnwood, Wa.
1976 GMC 26' Edgemonte Rear Twin
1973 GMC 23' Rear-Ended, Totaled
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| Re: [GMCnet] leaking height control valve [message #299481 is a reply to message #299472] |
Fri, 22 April 2016 12:38 |
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They've got those upside down shrader valves inside. Probably got some
contamination in one.
On Apr 22, 2016 11:29 AM, "KB" wrote:
>
> I bought new height control valves a few years ago from Applied.
> One of the valves now has a leak; it won't shut off when set to
> travel. Once it reaches travel height, it just continuously hisses out
> the port at the valve. This is on a 75 coach, so has the earlier style
valves.
>
> Any thoughts on what's wrong with it? Is it fixable, or do I need
> to spring for another new valve?
>
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bdub
bdub.net
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| Re: [GMCnet] leaking height control valve [message #299496 is a reply to message #299483] |
Fri, 22 April 2016 14:36 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Karen,
I can warranty it for you, if it is the one in the rear fender.
Just pay us $ 15 for shipping to factory.
Hope that will work for you as I feel they should last several years.
On Fri, Apr 22, 2016 at 10:49 AM, Dave wrote:
> That reminds me, I have not drained the water out of my compressed air
> tank this year :).
> --
>
> DaveL
> Lynnwood, Wa.
>
> 1973 GMC 23' former Canyonlands
> 1973 Super Beetle Convertible
> 1982 Mercedes 300CD
> 1995 Mercedes E300D
>
>
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--
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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