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| Airbag help needed. [message #118853] |
Tue, 15 March 2011 08:26  |
Rickmo
Messages: 105
Registered: January 2011
Location: Gladwin, Michigan
Karma: 0
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Senior Member |
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http://s1213.photobucket.com/albums/cc470/rickmo1/
I am the new owner of a 73 Canyon Lands that has had a lot of upgrades done by the previous owner. Here is my latest issue.
You guys are a life saver!
I have a 73 with an airbag system that has been recently upgraded by the PO. It is leaking badly out of the opening shown in photo 2 shown by the red arrow. both sides leak from the same opening. You can see in photo 1 that the PO installed a shrader valve and small airvalve to keep air in the bags once inflated. If I open the valve (yellow handle in photo 1) air will rush out of the opening shown by the red arrow in photo 2.
Any help would be appreciated.
Rick in Gladwin Michigan.
Rick Seebeck
Gladwin Michigan
1973 Canyon Lands
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| Re: [GMCnet] Airbag help needed. [message #118855 is a reply to message #118854] |
Tue, 15 March 2011 08:33  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Rick,
If you don't want to sign up for that site you can find the same article
here:
http://www.gmceast.com/technical/Denney_Power_Level_System.pdf
Regards,
Rob M.
USAussie - Downunder
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 Rob Mueller
Sent: Wednesday, March 16, 2011 12:30 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Airbag help needed.
Rick,
That opening is the vent for the height control valves.
There are two other fittings on that valve, one goes to the air bag the
other goes to the Powerlevel panel in the dash board.
Here's a link to Rick Denny's excellent technical description of the
Powerlevel system.
http://ebookbrowse.com/denney-power-level-system-pdf-d18821305
Give it a read and get back to us.
Regards,
Rob M.
USAussie - Downunder
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 Rick
Sent: Wednesday, March 16, 2011 12:27 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Airbag help needed.
http://s1213.photobucket.com/albums/cc470/rickmo1/
I am the new owner of a 73 Canyon Lands that has had a lot of upgrades done
by the previous owner. Here is my latest issue.
You guys are a life saver!
I have a 73 with an airbag system that has been recently upgraded by the PO.
It is leaking badly out of the opening shown in photo 2 shown by the red
arrow. both sides leak from the same opening. You can see in photo 1 that
the PO installed a shrader valve and small airvalve to keep air in the bags
once inflated. If I open the valve (yellow handle in photo 1) air will rush
out of the opening shown by the red arrow in photo 2.
Any help would be appreciated.
Rick in Gladwin Michigan.
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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: [GMCnet] Airbag help needed. [message #118858 is a reply to message #118855] |
Tue, 15 March 2011 09:48 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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The reason why it leaks is probably the height is too high and you
have it on travel.
On Tue, Mar 15, 2011 at 6:33 AM, Rob Mueller <robmueller@iinet.net.au> wrote:
> Rick,
>
> If you don't want to sign up for that site you can find the same article
> here:
>
> http://www.gmceast.com/technical/Denney_Power_Level_System.pdf
>
> Regards,
> Rob M.
> USAussie - Downunder
> 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 Rob Mueller
> Sent: Wednesday, March 16, 2011 12:30 AM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Airbag help needed.
>
> Rick,
>
> That opening is the vent for the height control valves.
>
> There are two other fittings on that valve, one goes to the air bag the
> other goes to the Powerlevel panel in the dash board.
>
> Here's a link to Rick Denny's excellent technical description of the
> Powerlevel system.
>
> http://ebookbrowse.com/denney-power-level-system-pdf-d18821305
>
> Give it a read and get back to us.
>
> Regards,
> Rob M.
> USAussie - Downunder
> 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 Rick
> Sent: Wednesday, March 16, 2011 12:27 AM
> To: gmclist@temp.gmcnet.org
> Subject: [GMCnet] Airbag help needed.
>
>
>
> http://s1213.photobucket.com/albums/cc470/rickmo1/
>
> I am the new owner of a 73 Canyon Lands that has had a lot of upgrades done
> by the previous owner. Â Here is my latest issue.
> You guys are a life saver!
>
> I have a 73 with an airbag system that has been recently upgraded by the PO.
> It is leaking badly out of the opening shown in photo 2 shown by the red
> arrow. Â both sides leak from the same opening. Â You can see in photo 1 that
> the PO installed a shrader valve and small airvalve to keep air in the bags
> once inflated. Â If I open the valve (yellow handle in photo 1) air will rush
> out of the opening shown by the red arrow in photo 2.
>
> Any help would be appreciated.
>
> Rick in Gladwin Michigan.
> _______________________________________________
> GMCnet mailing list
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> _______________________________________________
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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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| Re: Airbag help needed. [message #118861 is a reply to message #118853] |
Tue, 15 March 2011 10:05 |
idrob
Messages: 645
Registered: January 2005
Location: Central Idaho
Karma: 0
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Senior Member |
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| Rickmo wrote on Tue, 15 March 2011 06:26 |
http://s1213.photobucket.com/albums/cc470/rickmo1/
I am the new owner of a 73 Canyon Lands that has had a lot of upgrades done by the previous owner. Here is my latest issue.
You guys are a life saver!
I have a 73 with an airbag system that has been recently upgraded by the PO. It is leaking badly out of the opening shown in photo 2 shown by the red arrow. both sides leak from the same opening. You can see in photo 1 that the PO installed a shrader valve and small airvalve to keep air in the bags once inflated. If I open the valve (yellow handle in photo 1) air will rush out of the opening shown by the red arrow in photo 2.
Any help would be appreciated.
Rick in Gladwin Michigan.
|
Here is another article I wrote on the power level system, in addition to the one Rick Denny wrote and Rob M mentioned.
http://www.bdub.net/GMC_Power_Level_Air_Suspension_Systems.pdf
Rob Allen
former owner of '76 x-PB
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| Re: Airbag help needed. [message #118866 is a reply to message #118853] |
Tue, 15 March 2011 10:54 |
Rickmo
Messages: 105
Registered: January 2011
Location: Gladwin, Michigan
Karma: 0
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Senior Member |
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When I open the yellow valve in the wheel well (airbag isolator)the air will leak out the leveling valve until the coach is really low.
Rick Seebeck
Gladwin Michigan
1973 Canyon Lands
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| Re: [GMCnet] Airbag help needed. [message #118905 is a reply to message #118869] |
Tue, 15 March 2011 17:31 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Dennis,
I have a set of JR's valves on Double Trouble and when I set them to "Lower"
the air is vented behind the dash, not at the valves.
Regards,
Rob M.
USAussie - Downunder
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 Dennis S
Sent: Wednesday, March 16, 2011 3:08 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Airbag help needed.
Rick,
What do you have your leveling valves set on -- at the dash? Any chance they
are in "lower"?
Dennis Sexton
73 GMC 230
Germantown, TN
USA
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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: Airbag help needed. [message #118907 is a reply to message #118866] |
Tue, 15 March 2011 17:56 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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| Rickmo wrote on Tue, 15 March 2011 11:54 |
When I open the yellow valve in the wheel well (airbag isolator)the air will leak out the leveling valve until the coach is really low.
|
Sir: the coach is suppose to about 1 1/2" lower in the rear with the valves set on travel. A shadetree adjustment is to park on a level surface and measure from the ground to the top of the "T" skirt. 33" I believe. I believe Jim K sets them with the center of the rear wheel the same height as the grease Zerks. The official measurement is 11 11/32 to the top of the race track hole in the frame behind the Onan.
To adjust the height, (with the air compressor satisfied and valves set on "travel") the arm on each leveling valve has a 7/16 wrench size nut over a slot. Loosen the nut just enough to move the lever. up is up down is down. There is a 20 second delay after the movement. Usually if I wast one to go uo I move it all the way up and measure as it raises and then move it back till it shuts off. You have to do both sides and will probably have to run back and forth a few times to get it even. Tighten the nuts before test driving and recheck..
C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] Airbag help needed. [message #118910 is a reply to message #118905] |
Tue, 15 March 2011 18:04 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Rob
Yes, the stock set up for 73 evacuates at the dash. The exhaust in the
wheel well is from the height control valve.
Dennis
73 GMC
Sent from my iPhone
On Mar 15, 2011, at 5:31 PM, "Rob Mueller" <robmueller@iinet.net.au>
wrote:
> Dennis,
>
> I have a set of JR's valves on Double Trouble and when I set them to
> "Lower"
> the air is vented behind the dash, not at the valves.
>
> Regards,
> Rob M.
> USAussie - Downunder
> 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 Dennis S
> Sent: Wednesday, March 16, 2011 3:08 AM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Airbag help needed.
>
>
> Rick,
>
> What do you have your leveling valves set on -- at the dash? Any
> chance they
> are in "lower"?
>
>
> Dennis Sexton
> 73 GMC 230
> Germantown, TN
> USA
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: Airbag help needed. [message #118913 is a reply to message #118907] |
Tue, 15 March 2011 18:37 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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| C Boyd wrote on Tue, 15 March 2011 18:56 |
| Rickmo wrote on Tue, 15 March 2011 11:54 |
When I open the yellow valve in the wheel well (airbag isolator)the air will leak out the leveling valve until the coach is really low.
|
Sir: the coach is suppose to about 1 1/2" lower in the rear with the valves set on travel. A shadetree adjustment is to park on a level surface and measure from the ground to the top of the "T" skirt. 33" I believe. I believe Jim K sets them with the center of the rear wheel the same height as the grease Zerks. The official measurement is 11 11/32 to the top of the race track hole in the frame behind the Onan.
To adjust the height, (with the air compressor satisfied and valves set on "travel") the arm on each leveling valve has a 7/16 wrench size nut over a slot. Loosen the nut just enough to move the lever. up is up down is down. There is a 20 second delay after the movement. Usually if I wast one to go uo I move it all the way up and measure as it raises and then move it back till it shuts off. You have to do both sides and will probably have to run back and forth a few times to get it even. Tighten the nuts before test driving and recheck..
|
Sorry: should read loosen the nut just enough to move the NUT in the slot in the lever....
C. Boyd
76 Crestmont
East Tennessee
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| Re: Airbag help needed. [message #118914 is a reply to message #118866] |
Tue, 15 March 2011 18:52 |
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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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| Rickmo wrote on Tue, 15 March 2011 08:54 |
When I open the yellow valve in the wheel well (airbag isolator)the air will leak out the leveling valve until the coach is really low.
|
As set up from the factory, there is NO connection directly between the airbag and the leveling valve. (Even though both are next to each other in the wheel-well.) Both are connected to the control valves on the dash. ALL pressure going in/out of the airbag goes through the dash valves.
See: <http://www.bdub.net/pictures/birch/Birch-PowerLevel.jpg>
If you have air coming out of the leveling valves and are NOT in "travel" -- you have bad dash or leveling valve(s) or you have been major-ly "P.O.'ed."
Most likely you ARE in travel and the valves are set lower than you expect. (This might NOT be the same as being set to low!)
Check it out. (and the other items already mentioned.)
Let us know what you find and if it isn't working right... we'll go from there.
Are there any GMC'ers close enough to look over you coach with you and point out "the little things?" (I wish I had someone when I got my first 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: Airbag help needed. [message #118915 is a reply to message #118914] |
Tue, 15 March 2011 19:03 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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| mike miller wrote on Tue, 15 March 2011 19:52 |
| Rickmo wrote on Tue, 15 March 2011 08:54 |
When I open the yellow valve in the wheel well (airbag isolator)the air will leak out the leveling valve until the coach is really low.
|
As set up from the factory, there is NO connection directly between the airbag and the leveling valve. (Even though both are next to each other in the wheel-well.) Both are connected to the control valves on the dash. ALL pressure going in/out of the airbag goes through the dash valves.
See: <http://www.bdub.net/pictures/birch/Birch-PowerLevel.jpg>
If you have air coming out of the leveling valves and are NOT in "travel" -- you have bad dash or leveling valve(s) or you have been major-ly "P.O.'ed."
Most likely you ARE in travel and the valves are set lower than you expect. (This might NOT be the same as being set to low!)
Check it out. (and the other items already mentioned.)
Let us know what you find and if it isn't working right... we'll go from there.
Are there any GMC'ers close enough to look over you coach with you and point out "the little things?" (I wish I had someone when I got my first one.)
|
Good point Mike, we all assumed he had dash leveling valves. Some rare coaches (like mine) do not have the dash valves and the leveling valve is hooked directly to the air bag. I can`t tell from his pics.. Wish I had had a mentor also... Maybe Mr Black should start a "Roger"List" for new owners...
C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] Airbag help needed. [message #118919 is a reply to message #118914] |
Tue, 15 March 2011 19:21 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Mike,
100% correct!
Guess I should have re-read Rick Denny's blurb BEFORE I responded! ;-)
My bad!
Regards,
Rob M.
USAussie - Downunder
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 Mike Miller
Sent: Wednesday, March 16, 2011 10:52 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Airbag help needed.
As set up from the factory, there is NO connection directly between the
airbag and the leveling valve. (Even though both are next to each other in
the wheel-well.) Both are connected to the control valves on the dash. ALL
pressure going in/out of the airbag goes through the dash valves.
--
Mike Miller -- Hillsboro, OR -- on the Black list
'73 26' exPainted D. -- `78 23' Birchaven Rear Bath -- `77 23' Birchaven
Side Bath
http://m000035.blogspot.com
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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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: [GMCnet] Airbag help needed. [message #118934 is a reply to message #118919] |
Tue, 15 March 2011 21:32 |
Rickmo
Messages: 105
Registered: January 2011
Location: Gladwin, Michigan
Karma: 0
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Senior Member |
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Thanks for all the information! I set the dash (electro level II) in hold and no air leaks out. I set it in travel and no air leaks out. I set it in lower and there is a 1 second hissing noise at the dash valve (should it be hissing longer?). I set it in raise and air leaks out from the wheel well leveling valve.
There is a manual switch on the compressor that is turned off so the compressor does not run.
Really confused now...
Rick
Rick Seebeck
Gladwin Michigan
1973 Canyon Lands
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| Re: [GMCnet] Airbag help needed. [message #118940 is a reply to message #118939] |
Tue, 15 March 2011 22:01 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Rick, Rob,
I suspect if Rick has Powerlevel II -- it is the valve set up by JR Slaten.
See photo -- is this it?
http://appliedgmc.com/products/full/738.jpg
You obviously have other modifications -- the yellow valve in the wheel well and such.
Is the PO, previous owner available to ask how the system works?
Dennis
| Robert Mueller wrote on Tue, 15 March 2011 21:49 |
Rick,
I hate to say this mate but you REALLY need to read Rick Denny's publication
because you REALLY are confusing people with your questions.
The 1973 GMC came with the Powerlevel system NOT the Electro Level II. The
Powerlevel system has two valves in the dashboard. The Electro Level I and
Electro Level II have switches.
Regards,
Rob M.
USAussie - Downunder
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 Rick
Sent: Wednesday, March 16, 2011 1:33 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Airbag help needed.
Thanks for all the information! I set the dash (electro level II) in hold
and no air leaks out. I set it in travel and no air leaks out. I set it in
lower and there is a 1 second hissing noise at the dash valve (should it be
hissing longer?). I set it in raise and air leaks out from the wheel well
leveling valve.
There is a manual switch on the compressor that is turned off so the
compressor does not run.
Really confused now...
Rick
--
Rick Seebeck
Gladwin Michigan
1973 Canyon Lands
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Airbag help needed. [message #118985 is a reply to message #118939] |
Wed, 16 March 2011 10:49 |
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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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It is even more confusing when the pictures show leveling valves that where only used with the Power-Level and Electro-Level(1)... not the Electro-Level 2. (I know this has been ID'ed as a Power-Level system with upgraded (PL-2) valves.)
I have one example of each system, but really haven't worked on the EL(1).
| Robert Mueller wrote on Tue, 15 March 2011 19:49 |
I hate to say this mate but you REALLY need to read Rick Denny's publication
because you REALLY are confusing people with your questions.
The 1973 GMC came with the Powerlevel system NOT the Electro Level II. The
Powerlevel system has two valves in the dashboard. The Electro Level I and
Electro Level II have switches.
-----Original Message-----
Subject: Re: [GMCnet] Airbag help needed.
Thanks for all the information! I set the dash (electro level II) in hold
and no air leaks out. I set it in travel and no air leaks out. I set it in
lower and there is a 1 second hissing noise at the dash valve (should it be
hissing longer?). I set it in raise and air leaks out from the wheel well
leveling valve.
There is a manual switch on the compressor that is turned off so the
compressor does not run.
|
Rick,
When in lower you should have hissing at the dash valves until the coach has lowered all the way down. A word of caution, early coaches will rest with the the plastic wheel-wells on the top of the tires... damaging the wheel-wells. So block the boogies.
Where are you getting your air pressure if the compressor does not run?
Does the coach raise when you put it in raise? And when does the leveling valve start releasing air? (i.e. when the coach is still low, or when it gets above ride height?)
Rick D. had a good method of attacking problems with the Power-Level. It went something like this: Do the bags themselves hold air? Will the system hold air in the bags in HOLD? Will the system hold air in the bags in RAISE? ... ect.
His procedure is in this article.... reading it, then following the troubleshooting, should help you.
<http://www.gmceast.com/technical/Denney_Power_Level_System.pdf>
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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