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06-01-2017, 10:17 AM
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#1
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Senior Member
Join Date: Feb 2017
Posts: 651
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Airbag pressures?
Hi guys, I just had new airbags put on my coach and it rides really hard now. When I connected them to the compressor it automatically inflated them to 70 pounds. Does anyone know if it should be adjusted to a lower pressure? The Ride Now is very hard and like riding on rocks. Then again it may be the poor roads in Ohio.
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06-01-2017, 10:24 AM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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What brand of air bags ?
Nothing in owners manual about pressure adjustments ?
Most systems would have a minimum pressure in the 30 PSI range, and individual preference after that. 
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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06-01-2017, 11:47 AM
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#3
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Moderator Emeritus
Monaco Owners Club Texas Boomers Club
Join Date: Nov 2015
Location: Central Texas
Posts: 13,426
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What kind of coach do you have that you are measuring the air pressure in your air bags? In a coach with an air suspension, the pressure is automatically adjusted to maintain ride height.
__________________
Dennis and Katherine
2000 Monaco Dynasty
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06-01-2017, 03:06 PM
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#4
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Senior Member
Ford Super Duty Owner
Join Date: Mar 2017
Location: Chesapeake, VA.
Posts: 791
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I run 65 psi rear only
I only have the rear airbags, I may try a little more on my upcoming trip. It is not harsh riding in my rv.
__________________
USN 1980-2004
2017 Sunseeker GTS 2800
2017 Jeep Grand Cherokee
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06-01-2017, 03:14 PM
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#5
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,941
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Quote:
Originally Posted by DoC808
Hi guys, I just had new airbags put on my coach and it rides really hard now. When I connected them to the compressor it automatically inflated them to 70 pounds. Does anyone know if it should be adjusted to a lower pressure? The Ride Now is very hard and like riding on rocks. Then again it may be the poor roads in Ohio.
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More accurate answers could be obtained if :
Year/make/model/engine/trans/chassis was supplied.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
 2018 Goldwing Tour DCT Airbag
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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06-01-2017, 09:37 PM
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#6
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Senior Member
Join Date: Feb 2017
Posts: 651
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Ok, it's a 2007 dynamax isata. With a V10 Ford, E450,the Bags are firestone 5406/5409s. Same bags they just changed the number. It has a compressor that automatically filled them to 70lbs. But each has an individual air Chuck on the fender.
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06-02-2017, 07:07 PM
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#7
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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Quote:
Originally Posted by DoC808
Ok, it's a 2007 dynamax isata. With a V10 Ford, E450,the Bags are firestone 5406/5409s. Same bags they just changed the number. It has a compressor that automatically filled them to 70lbs. But each has an individual air Chuck on the fender.
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If you have no info on adjusting the compressor output, shut down the compressor and set the pressure from the air chucks, drop the pressure 10 psi at a time , until you see the suspension start to drop , then road test for ride quality, then go up 5 psi. 
If you can find any part numbers on the compressor contact Firestone for an owners manual.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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06-02-2017, 07:26 PM
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#8
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Senior Member
Join Date: Feb 2017
Posts: 651
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Quote:
Originally Posted by Skip426
If you have no info on adjusting the compressor output, shut down the compressor and set the pressure from the air chucks, drop the pressure 10 psi at a time , until you see the suspension start to drop , then road test for ride quality, then go up 5 psi.
If you can find any part numbers on the compressor contact Firestone for an owners manual. |
Great info. I'll get with firestone. I dropped it 10lbs in each bag. It's alittle better. I'm starting to think it is just the way it's supposed to be. It's my first coach and I'm used to passenger cars.
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06-04-2017, 01:14 AM
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#9
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Senior Member
Winnebago Owners Club
Join Date: May 2008
Location: Surprise, AZ
Posts: 816
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Quote:
Originally Posted by DoC808
Great info. I'll get with firestone. I dropped it 10lbs in each bag. It's alittle better. I'm starting to think it is just the way it's supposed to be. It's my first coach and I'm used to passenger cars.
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In my opinion, it is really trial and error based on your motorhome. I have firestone airbags and I usually run 35-40 pounds in the front and rear. I have tried up to 60 pounds and found the ride too hard for me.
__________________
John Rossi
2013 Itasca Sunstar 26HE
Firestone Airbags, Hellwig front/rear Anti-Sway Bars,
Rear Trac Bar, Safe-T-Plus, and 480 watt solar system.
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06-04-2017, 01:31 AM
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#10
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,149
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How to make a signature for your RV so we can serve you better.
1 .Click "User CP" on left side of the screen in about the middle.
2. Click "Edit Signature" on left side 7 bars down under Your Control Panel.
3. Fill out your signature information.
4. Click "Save Signature"
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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06-04-2017, 08:21 AM
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#11
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Senior Member
Join Date: Feb 2017
Posts: 651
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Quote:
Originally Posted by Rossi6998
In my opinion, it is really trial and error based on your motorhome. I have firestone airbags and I usually run 35-40 pounds in the front and rear. I have tried up to 60 pounds and found the ride too hard for me.
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Okay I disconnected the compressor, and then I drop the pressure to about 50 lbs each but now the tank pumps it back up to 70. What am I missing?
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