Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 12-23-2007, 02:03 PM   #1
gwj
Member
 
Join Date: Nov 2007
Posts: 47
Last Friday I parked my DP in front of my house. I left the air ride system inflated. Before I turned the engine off I looked at the pressure gauges, they both read 125 PSI. This afternoon I started the engine, and I noticed the front PSI was 35 psi, and the rear PSI was 125 PSI. I also noticed the air ride system was completely deflated. Where should I start to look for the leak, front brakes, air ride system. I have a 2002 Fleetwood Expedition, with a ISB 300.
__________________

__________________
gwj is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-23-2007, 02:03 PM   #2
gwj
Member
 
Join Date: Nov 2007
Posts: 47
Last Friday I parked my DP in front of my house. I left the air ride system inflated. Before I turned the engine off I looked at the pressure gauges, they both read 125 PSI. This afternoon I started the engine, and I noticed the front PSI was 35 psi, and the rear PSI was 125 PSI. I also noticed the air ride system was completely deflated. Where should I start to look for the leak, front brakes, air ride system. I have a 2002 Fleetwood Expedition, with a ISB 300.
__________________

__________________
gwj is offline   Reply With Quote
Old 12-24-2007, 01:51 AM   #3
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
If you want to find the leak you will want to start at the compressor and have the system completely aired up. Use a solution of dishwashing detergent and water to make a leak finder in a pump spray bottle. Spray a little soapy water on all fittings and listen out for the sound of air leaking out of the system. It could be anywhere. Good luck and let us know what you find.
__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 12-24-2007, 05:06 AM   #4
gwj
Member
 
Join Date: Nov 2007
Posts: 47
Thanks.
__________________
gwj is offline   Reply With Quote
Old 12-24-2007, 05:11 AM   #5
Moderator Emeritus
 
Joe-K's Avatar


 
Tiffin Owners Club
Pond Piggies Club
Join Date: Mar 2000
Location: Butler, PA
Posts: 1,828
It's hard to tell from your post how many days that the suspension stayed aired up, but it's not unusual for the suspension to drop after several days.

On our Journey, if I dumped the air suspension when parkig the rig, the air tanks would stay fairly full for quite a while. If leaving the air suspension filled however, depending on conditions, I'd find the tank supplying the suspension low after several days.

The reason for this is that due to coach movement, the system is adding and removing air from the air suspension. Whenever the coach rocks due to someone walking in the coach, or wind rocking the coach the suspension is working.

I used to notice the hissing of air being added to the air bags whenever I stepped on the entrance step going into the coach. As soon as I stepped off the step, the air would bleed back out again. It doesn't take much adding and releasing of air due to coach movement for the air in the air tank to become depleted.
__________________
Joe & Shelly, Justin, Tyler, Alyssa | Butler PA
2008 Tiffin Allegro Bus 43QRP|Cummins 425|Honda CRV
Joe-K is offline   Reply With Quote
Old 12-24-2007, 05:26 AM   #6
gwj
Member
 
Join Date: Nov 2007
Posts: 47
Joe, do you think I should release the air from the air bags, and see how bad the leak is first. I left the air bags inflated for 3 days, and the front tank got down to 35 PSI.
__________________
gwj is offline   Reply With Quote
Old 12-24-2007, 07:30 AM   #7
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,060
gwj,
That degree of air loss is pretty common and nothing to be much concerned about. But yes, it is leaking air and you can find and fix the leak(s) if you want, using the soap bubble, look and listen technique that Mike [RVWizard] described. There area zillion air line couplings and valves under the coach and it is likely a collection of small leaks, with perhaps one larger one. If you fix enough of them your air pressure will probably stay up for at least a week and perhaps several weeks.

I just had two valves replaced on mine (a dump valve and the brake treadle valve) after the air loss got severe (completely lost all pressure in about two hours) and I still have the sort of small leaks you describe.
__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 12-25-2007, 04:40 PM   #8
Senior Member
 
Join Date: Feb 2000
Location: Alachua, FL
Posts: 334
RV Wizard is right on. I had a similar problem with my coach in 2005. An RV tech checked my system and noted that I had three leaks: one at the compressor connection; one at the rear ride height valve; and a very small leak at the solonoid that controls the air horns.

The tech tightened the compressor connection (the worse leak of the 3) right then and there. Since I was at an FMCA area rally in MA, I opted to fix the other leaks upon my return to Florida.

Later, the Cummins/Spartan shop in Ocala replaced my cracked rear ride height valve and I have had no measurable leaks since then.

By the way, as a general rule, you should bleed the air tanks (I have 3) every week when traveling or upon arrival at your final destination. I have 3 plastic cables that I pull from the front genrator compartment to drain the tanks.
__________________
Lew

Fulltimers! - Currently in Gainesville, FL - working as Webmaster & Special Projects Manager
Digital Boy is offline   Reply With Quote
Old 12-25-2007, 09:13 PM   #9
Senior Member
 
georgetown350's Avatar
 
Monaco Owners Club
Join Date: Oct 2006
Posts: 1,603
Build the preasure up and apply the brakes and hold. Preasure should drop a few psi and then stop. If it continues to drop preasure then you have a problem.
__________________
2008 HR 340 Cummins, Vacationer XL
georgetown350 is offline   Reply With Quote
Old 12-25-2007, 09:16 PM   #10
Senior Member
 
georgetown350's Avatar
 
Monaco Owners Club
Join Date: Oct 2006
Posts: 1,603
pressure
__________________

__________________
2008 HR 340 Cummins, Vacationer XL
georgetown350 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Brake/Suspension Air Leak Chonburiman MH-General Discussions & Problems 10 03-30-2013 09:23 AM
Air leak in front air ride turbo24 Spartan Motorhome Chassis Forum 6 08-18-2008 08:24 PM
Air leak? rmmpe Alpine Coach Owner's Forum 7 07-15-2007 05:59 PM
Air Leak Kiwi Winnebago Industries Owner's Forum 5 02-21-2005 07:16 PM
Air Brake/Suspension Air Leak Roadmaster Motorhome Chassis Forum 6 12-31-1969 07:00 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:37 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.