| Re: [GMCnet] air pressure for Quadra Bag Rear Suspension System [message #239004] |
Thu, 06 February 2014 16:37  |
KB
Messages: 1262
Registered: September 2009
Karma: 0
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Senior Member |
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> For the record Dave Lenzi runs the Harrison system on his coach and has replaced one of the bags it comes with (Firestone P/N
> W01-358-3400 with Firestone P/N W01-358-7350) The 7350 is the bag used on the Q-Bag system. The 7350 is a larger OD bellows (7.44")
> vs the 3400 bellows (7.25"). He did that to reduce the amount of pressure required to get his Coachman Royale to ride height.
> Anticipating the next question; according to Dave you cannot run two 7350's on the Harrison system.
Correction: having been down this road, for the harrison system you need
air bags with offset fill ports. The ones on the q-bag have the fill in the center.
The equivalent larger bags for the harrison system are: W21-358-7325
Also, all the references I've seen show the Q-bag uses W01-358-7325.
I'm not finding any hits for W01-358-7350 at the various truck spring sites;
not sure it's a valid number.
I see no reason why you can't put two of these on the harrison system to
replace both of the smaller bags he supplied originally. I currently have
the bigger bags only on the mid wheels, but will probably replace the rear
ones too at some point.
jwid,
Karen
1973 23'
1975 26'
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Karen
1975 26'
San Jose, CA
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| Re: [GMCnet] air pressure for Quadra Bag Rear Suspension System [message #239018 is a reply to message #239004] |
Thu, 06 February 2014 17:09  |
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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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Karen,
You are correct vis-à-vis the 7350 / 7325; I corrected myself in a later email.
Thanks for the W21-358-7325 when I spoke to Dave about this he just said he used the same bags as the Q-Bag system and so I ASSUMED
the WO1-358-7325, my bad!
Dave was the one that noted you couldn't / shouldn't run four W21-358-7325 bags. I may have gotten that wrong too, I'm old and my
memory lapses from time to time. Give him a call before you replace the other two bags.
Regards,
Rob M.
Sydney, Australia
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of KB
Correction: having been down this road, for the harrison system you need
air bags with offset fill ports. The ones on the q-bag have the fill in the center.
The equivalent larger bags for the harrison system are: W21-358-7325
Also, all the references I've seen show the Q-bag uses W01-358-7325.
I'm not finding any hits for W01-358-7350 at the various truck spring sites;
not sure it's a valid number.
I see no reason why you can't put two of these on the harrison system to
replace both of the smaller bags he supplied originally. I currently have
the bigger bags only on the mid wheels, but will probably replace the rear
ones too at some point.
jwid,
Karen
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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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