| Height Control Valve [message #63954] |
Wed, 11 November 2009 21:41  |
rgleas
Messages: 48
Registered: May 2009
Location: Tulsa, Ok.
Karma: 0
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I spent yesterday adjusting a ride height control valve according to the procedure in the GMC maintenance manual. Now that I have figured out what is going on with the valve I want to build a fixture to adjust the valve with. To build the fixture I need a sacrificial valve to build the fixture around. If it is available I also need the arm that goes from the valve to the swing arm.
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| Re: [GMCnet] Height Control Valve [message #63980 is a reply to message #63979] |
Thu, 12 November 2009 07:25  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Roger,
Thanks, I don't have access to Electro Level valves.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Roger P. Gleason
Sent: Friday, 13 November 2009 12:18 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Height Control Valve
1976
Iknow the same valve was used on the original design, electro-level I, and I
have worked on an electro-level II that still had the same heigth valve.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: Height Control Valve [message #64009 is a reply to message #63979] |
Thu, 12 November 2009 10:59 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| rgleas wrote on Thu, 12 November 2009 05:17 |
1976
I know the same valve was used on the original design, electro-level I, and I have worked on an electro-level II that still had the same heigth valve.
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Actually 1973 to the early '76's had "POWER LEVEL" systems. During 1976 they changed to the Electro-Level system. It had electrical switches on the dash(76) or side panel(77/78) but the same valve in the wheel well. Starting in mid 1978, they put in the Electro-Level II system with electric sensors and no tank, but two pumps.
But from reading your posts... I think you want a wheel well valve from any GMC except the electric (EL II) one.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Height Control Valve [message #64081 is a reply to message #64062] |
Thu, 12 November 2009 20:41 |
idrob
Messages: 645
Registered: January 2005
Location: Central Idaho
Karma: 0
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Senior Member |
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| rgleas wrote on Thu, 12 November 2009 16:34 |
The only difficult part of the adjustment procedure is the fluid. No one seems to know where to find it. With a fixture I don't think I will need to remove the fluid.
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As I recall, this is a special viscosity silicone fluid, and very hard if not impossible to come by now. One of the Canadian vendors (I think) had some, and did rebuilds of the original valves. Haven't seen anything about it lately. Some one else may recall the name, or details.
Rob Allen
former owner of '76 x-PB
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| Re: [GMCnet] Height Control Valve [message #64083 is a reply to message #64081] |
Thu, 12 November 2009 20:58 |
rharms
Messages: 5
Registered: September 2004
Karma: 0
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Junior Member |
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Rob,
I have a gallon of the stuff
http://www.gmcmhphotos.com/photos/showphoto.php?photo=3827
I would be happy to get rid of some or all of it.
Russ Harms
Medicine Hat, Alberta
78 Royale
----- Original Message -----
From: "Rob Allen" <profmail@camasnet.com>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, November 12, 2009 7:41 PM
Subject: Re: [GMCnet] Height Control Valve
>
>
> rgleas wrote on Thu, 12 November 2009 16:34
>> The only difficult part of the adjustment procedure is the fluid. No one
>> seems to know where to find it. With a fixture I don't think I will need
>> to remove the fluid.
>
>
> As I recall, this is a special viscosity silicone fluid, and very hard if
> not impossible to come by now. One of the Canadian vendors (I think) had
> some, and did rebuilds of the original valves. Haven't seen anything
> about it lately. Some one else may recall the name, or details.
>
> --
> Rob Allen
> '76 x-PB
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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| Re: [GMCnet] Height Control Valve [message #64088 is a reply to message #64083] |
Thu, 12 November 2009 21:29 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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This is the same stuff by the same people that Dave Lenzi uses when he
rebuilds the units. He has all the jigs and fixtures and test setup
to rebuild these valves correctly. For the price he charges you
cannot afford to do it yourself. The price is typically exchange on
the valves and is about $70.
J.R. Wright
On Nov 12, 2009, at 9:58 PM, Russ Harms wrote:
> Rob,
> I have a gallon of the stuff
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=3827
> I would be happy to get rid of some or all of it.
>
> Russ Harms
> Medicine Hat, Alberta
> 78 Royale
>
>
>
>
> ----- Original Message -----
> From: "Rob Allen" <profmail@camasnet.com>
> To: <gmclist@temp.gmcnet.org>
> Sent: Thursday, November 12, 2009 7:41 PM
> Subject: Re: [GMCnet] Height Control Valve
>
>
>>
>>
>> rgleas wrote on Thu, 12 November 2009 16:34
>>> The only difficult part of the adjustment procedure is the fluid.
>>> No one
>>> seems to know where to find it. With a fixture I don't think I
>>> will need
>>> to remove the fluid.
>>
>>
>> As I recall, this is a special viscosity silicone fluid, and very
>> hard if
>> not impossible to come by now. One of the Canadian vendors (I
>> think) had
>> some, and did rebuilds of the original valves. Haven't seen anything
>> about it lately. Some one else may recall the name, or details.
>>
>> --
>> Rob Allen
>> '76 x-PB
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Height Control Valve [message #64203 is a reply to message #64088] |
Fri, 13 November 2009 21:39 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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You can also aquire identical new ones from us for more $.
On Thu, Nov 12, 2009 at 7:29 PM, John Wright <powerjon@chartermi.net> wrote:
> This is the same stuff by the same people that Dave Lenzi uses when he
> rebuilds the units. He has all the jigs and fixtures and test setup
> to rebuild these valves correctly. For the price he charges you
> cannot afford to do it yourself. The price is typically exchange on
> the valves and is about $70.
>
> J.R. Wright
>
> On Nov 12, 2009, at 9:58 PM, Russ Harms wrote:
>
>> Rob,
>> I have a gallon of the stuff
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=3827
>> I would be happy to get rid of some or all of it.
>>
>> Russ Harms
>> Medicine Hat, Alberta
>> 78 Royale
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "Rob Allen" <profmail@camasnet.com>
>> To: <gmclist@temp.gmcnet.org>
>> Sent: Thursday, November 12, 2009 7:41 PM
>> Subject: Re: [GMCnet] Height Control Valve
>>
>>
>>>
>>>
>>> rgleas wrote on Thu, 12 November 2009 16:34
>>>> The only difficult part of the adjustment procedure is the fluid.
>>>> No one
>>>> seems to know where to find it. With a fixture I don't think I
>>>> will need
>>>> to remove the fluid.
>>>
>>>
>>> As I recall, this is a special viscosity silicone fluid, and very
>>> hard if
>>> not impossible to come by now. One of the Canadian vendors (I
>>> think) had
>>> some, and did rebuilds of the original valves. Haven't seen anything
>>> about it lately. Some one else may recall the name, or details.
>>>
>>> --
>>> Rob Allen
>>> '76 x-PB
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription 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] Height Control Valve [message #64240 is a reply to message #64203] |
Sat, 14 November 2009 12:26 |
rgleas
Messages: 48
Registered: May 2009
Location: Tulsa, Ok.
Karma: 0
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Member |
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I know that you carry them and that is my backup. I do value you as a supplier and have turned to you as a resource on many occasions.
The GMC community I live in don't seem to want to spend money on anything. Then they complain that they do not drive right. As I am sure, you are aware the height control valve is an integral piece of the handling of the coach. What I found after tearing one apart was that it was simply out of adjustment. A adjustment device will go a long way to quieting complaints.
As the quality in Detroit in the 70's was not what it should have been I suspect the adjustment was not correct in the first place since the biggest problem with this design would be water and this unit never had water in it. I also used the original shrader valves.
I also have found a valve to use to make the adjustment device.
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