GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.
Home » Public Forums » GMCnet » Electro-Level I Hose Routing
Electro-Level I Hose Routing [message #173783] Mon, 18 June 2012 14:53 Go to next message
SThornbg is currently offline  SThornbg   United States
Messages: 127
Registered: September 2011
Karma: 0
Senior Member
My driver's side air bag pumps up normally and holds well. However, it will not release pressure when the control switch is set to the down position. With the air bag removed, I find a 4 inch piece of hose attached to the exhaust port of the height control valve and the end appears to be cut, but I don't find a loose end of a hose that might have been connected to it. I have three hoses in the clamp on the wheel well wall and all are connected.

I don't find any good pictures of the connections and what pictures I do find in my downloaded copy of the manual are too dark to see much detail.

Any help would be much appreciated.

Steve Thornburg
South Bend, IN
77 PB 455 "Tinker Toy"

Steve Thornburg South Bend, IN 77 exPB 455 "Tinker Toy"

Report message to a moderator

Re: Electro-Level I Hose Routing [message #173784 is a reply to message #173783] Mon, 18 June 2012 15:08 Go to previous messageGo to next message
Dennis S is currently offline  Dennis S   United States
Messages: 3046
Registered: November 2005
Karma: 2
Senior Member
SThornbg wrote on Mon, 18 June 2012 14:53

My driver's side air bag pumps up normally and holds well. However, it will not release pressure when the control switch is set to the down position. With the air bag removed, I find a 4 inch piece of hose attached to the exhaust port of the height control valve and the end appears to be cut, but I don't find a loose end of a hose that might have been connected to it. I have three hoses in the clamp on the wheel well wall and all are connected.

I don't find any good pictures of the connections and what pictures I do find in my downloaded copy of the manual are too dark to see much detail.

Any help would be much appreciated.

Steve Thornburg
South Bend, IN
77 PB 455 "Tinker Toy"


Steve,

There is the system overview by Duane..

http://gmcws.org/Tech/dsimmons/air_suspension/air-suspension-system.html

The exhaust port tubing just evacuates to the atmosphere -- a short length of tubing.

Dennis

Dennis S
73 Painted Desert 230
Memphis TN Metro

[Updated on: Mon, 18 June 2012 15:27]

Report message to a moderator

Re: [GMCnet] Electro-Level I Hose Routing [message #173789 is a reply to message #173783] Mon, 18 June 2012 15:34 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
Messages: 4442
Registered: January 2004
Karma: 13
Senior Member
There is a good chance that the switch by the dash has dirt in it.

Carefully remove the switch after unplugging it (note the orientation of the plug so you don't replace it backwards).

When you have the plug out you can pry open the little tabs on the bottom and take it apart. Be sure to see how the parts are put together. Clean out the grease and dirt and them clean the contacts. After putting in the center rocker piece put a small dab of grease on the center. Squeeze the tabs back into place and it should work better.

The way the top of the switches are exposed to dust and dirt the have to be cleaned every few years.



Emery Stora

On Jun 18, 2012, at 1:53 PM, SThornbg <SThornbg@aol.com> wrote:

>
>
> My driver's side air bag pumps up normally and holds well. However, it will not release pressure when the control switch is set to the down position. With the air bag removed, I find a 4 inch piece of hose attached to the exhaust port of the height control valve and the end appears to be cut, but I don't find a loose end of a hose that might have been connected to it. I have three hoses in the clamp on the wheel well wall and all are connected.
>
> I don't find any good pictures of the connections and what pictures I do find in my downloaded copy of the manual are too dark to see much detail.
>
> Any help would be much appreciated.
>
> Steve Thornburg
> South Bend, IN
> 77 PB 455 "Tinker Toy"
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Report message to a moderator

Re: [GMCnet] Electro-Level I Hose Routing [message #173790 is a reply to message #173783] Mon, 18 June 2012 15:44 Go to previous messageGo to next message
k2gkk is currently offline  k2gkk   United States
Messages: 4452
Registered: November 2009
Karma: -8
Senior Member

Sully told me that is frequently caused by
dirty electrical contacts in the switches on
the control panel. I had the same experience
after he installed my new air bags and a few
cycles of the switches cured it for me.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*




> To: gmclist@temp.gmcnet.org
> From: SThornbg@aol.com
> Date: Mon, 18 Jun 2012 14:53:47 -0500
> Subject: [GMCnet] Electro-Level I Hose Routing
>
>
>
> My driver's side air bag pumps up normally and holds well. However, it will not release pressure when the control switch is set to the down position. With the air bag removed, I find a 4 inch piece of hose attached to the exhaust port of the height control valve and the end appears to be cut, but I don't find a loose end of a hose that might have been connected to it. I have three hoses in the clamp on the wheel well wall and all are connected.
>
> I don't find any good pictures of the connections and what pictures I do find in my downloaded copy of the manual are too dark to see much detail.
>
> Any help would be much appreciated.
>
> Steve Thornburg
> South Bend, IN
> 77 PB 455 "Tinker Toy"

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Report message to a moderator

Re: Electro-Level I Hose Routing [message #173792 is a reply to message #173783] Mon, 18 June 2012 15:57 Go to previous message
midlf is currently offline  midlf   United States
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
Senior Member
SThornbg wrote on Mon, 18 June 2012 14:53

With the air bag removed, I find a 4 inch piece of hose attached to the exhaust port of the height control valve and the end appears to be cut, but I don't find a loose end of a hose that might have been connected to it. I have three hoses in the clamp on the wheel well wall and all are connected.

Steve Thornburg
South Bend, IN
77 PB 455 "Tinker Toy"


As was stated, but may not have been clear. The short hose you see is just exactly the way it supposed to be. It is just a bit of tube for the exhaust air from the valve. It keeps dirt out of the actual valve mechanism.

Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI

Report message to a moderator

Previous Topic: Wifi/internet connections for travel
Next Topic: Digi Panel Group Buy
Goto Forum:
  


Current Time: Tue Feb 04 14:03:00 CST 2025

Total time taken to generate the page: 0.01082 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.1.
Copyright ©2001-2021 FUDforum Bulletin Board Software