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Re: [GMCnet] Required air pressure for quad bag rear suspension [message #328888 is a reply to message #328884]

Tue, 06 February 2018 16:49

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma:

Senior Member

G'day,

I apologize; obviously my previous email was not clear.

http://www.gmceast.com/technical/Mueller_GMC-Towing-Guide.pdf

Step 16 of my procedure states:

16. Before the GMC is raised by the front wheels or put on a trailer, raise the rear suspension
to the maximum height and place the system in HOLD. This is to greatly reduce the
likelihood of the rear dragging at some point in the process.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of James Hupy
Sent: Wednesday, February 7, 2018 8:52 AM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Required air pressure for quad bag rear suspension

"Travel-Hold" maintains pressure that the height controls determine from
measuring the suspension position. Requires ignition to be in the "on" or
"acc" position. If you want the suspension to be at the fully extended "up"
position for clearance while towing, I don't think "ride height" is what
you want..
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On Feb 6, 2018 1:43 PM, "Rob Mueller" wrote:

> Gordon,
>
> Here's an article I wrote on towing a GMC:
>
> http://www.gmceast.com/technical/Mueller_GMC-Towing-Guide.pdf
>
> As far as driving a GMC with the bags turned off I wonder why the guys
> that designed the system instruct owners to put the system in
> the "Travel" setting?
>
> In the "Travel" setting the system controls the air pressure to the bags.
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of
> Gordon Gibson
> Sent: Wednesday, February 7, 2018 2:11 AM
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] Required air pressure for quad bag rear suspension
>
> Hello Group
>
> I will shortly be having my coach towed (front wheels lifted of course)
> approximately 400 miles. Not sure the air bags will fully
> hold their pressure this distance (even less likely in -20C weather), and
> I don't want the rear end to be dragging by the end of the
> trip. I also don't want to have to periodically start the engine to run
> on-board compressor. The tow truck can provide compressed
> air and I have a quick disconnect valve on my air pressure tank. so I was
> thinking of simply connecting the trucks compressed air
> line to the tank,
> Does anybody know the appropriate PSI to feed the tank given that the rear
> suspension is one of the Bounds / Applied GMC quad bag
> systems?
>
> Thanks
> Gordon
>
> PS - I trust that if this is a dumb approach someone will let me know in
> no uncertain terms, along with why.
>
>
> _______________________________________________
> GMCnet mailing list
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>
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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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[Message index]

		Required air pressure for quad bag rear suspension By: gibsongo on Tue, 06 February 2018 09:10
		Re: Required air pressure for quad bag rear suspension By: Bullitthead on Tue, 06 February 2018 09:27
		Re: Required air pressure for quad bag rear suspension By: gibsongo on Tue, 06 February 2018 09:48
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: jimk on Tue, 06 February 2018 09:45
		Re: Required air pressure for quad bag rear suspension By: Larry on Tue, 06 February 2018 09:58
		Re: Required air pressure for quad bag rear suspension By: gibsongo on Tue, 06 February 2018 10:01
		Re: Required air pressure for quad bag rear suspension By: gibsongo on Tue, 06 February 2018 10:09
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: James Hupy on Tue, 06 February 2018 10:23
		Re: Required air pressure for quad bag rear suspension By: Larry on Tue, 06 February 2018 11:01
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: USAussie on Tue, 06 February 2018 15:42
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: James Hupy on Tue, 06 February 2018 15:52
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Carl S. on Tue, 06 February 2018 16:09
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: USAussie on Tue, 06 February 2018 16:49
		Re: Required air pressure for quad bag rear suspension By: RF_Burns on Tue, 06 February 2018 17:37
		Re: Required air pressure for quad bag rear suspension By: gibsongo on Tue, 06 February 2018 22:52
		Re: Required air pressure for quad bag rear suspension By: RF_Burns on Wed, 07 February 2018 05:58
		Re: Required air pressure for quad bag rear suspension By: Larry on Wed, 07 February 2018 08:10
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: k2gkk on Wed, 07 February 2018 09:50
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Larry on Wed, 07 February 2018 10:16
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: johnd01 on Wed, 07 February 2018 12:16
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Ken Burton on Wed, 07 February 2018 13:08
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: emerystora on Wed, 07 February 2018 14:06
		Re: Required air pressure for quad bag rear suspension By: JohnL455 on Wed, 07 February 2018 08:02
		Re: Required air pressure for quad bag rear suspension By: 77Royale on Wed, 07 February 2018 08:31
		Re: Required air pressure for quad bag rear suspension By: TR 1 on Wed, 07 February 2018 08:48
		Re: Required air pressure for quad bag rear suspension By: gibsongo on Thu, 15 February 2018 19:28
		Re: Required air pressure for quad bag rear suspension By: Ken Burton on Thu, 15 February 2018 23:02
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: jimk on Fri, 16 February 2018 12:03
		Re: Required air pressure for quad bag rear suspension By: gibsongo on Fri, 16 February 2018 20:48
		Re: Required air pressure for quad bag rear suspension By: Ken Burton on Sat, 17 February 2018 05:02
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Tangerine on Sat, 17 February 2018 10:38
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: jimk on Sat, 17 February 2018 11:00
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: k2gkk on Sat, 17 February 2018 14:54
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Tangerine on Sun, 18 February 2018 09:35
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: jimk on Sun, 18 February 2018 12:42
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: James Hupy on Sun, 18 February 2018 12:56
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Tangerine on Mon, 19 February 2018 05:37
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Bullitthead on Tue, 20 February 2018 19:31
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Bullitthead on Tue, 20 February 2018 19:36
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: jimk on Tue, 20 February 2018 20:24
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Bullitthead on Tue, 20 February 2018 20:52
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: jimk on Wed, 21 February 2018 00:14
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: bdub on Wed, 21 February 2018 06:12
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: Tangerine on Thu, 22 February 2018 07:36
		Re: [GMCnet] Required air pressure for quad bag rear suspension By: USAussie on Tue, 20 February 2018 19:39
		Re: Required air pressure for quad bag rear suspension By: NextGenGMC on Sat, 17 February 2018 12:51

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