Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
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 01-10-2015, 09:55 AM   #1
Senior Member
 
adonh's Avatar
 
Join Date: Apr 2013
Location: Missouri City, TX
Posts: 1,306
Class A DP Freightliner Chassis

Question. After dumping the air to lower the coach after parking I had a problem get the bags to air up and raise the coach after starting the engine. The front and rear air gauge showed only about 65 lbs. After turning off engine and restarting the gauges stayed about the same. I pressed the brake a few time and lowered the air pressure and then the cycle continued as normal up to around 120lbs and the coach raised to proper height. I have never had this happen and dopes not seem to be any type of air leak. Any thoughts, thanks
__________________

__________________
Don
2003 Forest River Cardinal Platinum 37' 5th Wheel
1976 31' Airstream
adonh 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 01-10-2015, 10:00 AM   #2
Senior Member
 
kb9tf's Avatar
 
Join Date: Jun 2013
Location: Southern Illinois
Posts: 127
Sounds to me more like a stuck valve.
__________________

__________________
Ron KB9TF, Fulltime
2008 Tiffin Phaeton 40 Foot QSH
2011 Honda CRV with Blue Ox towbar and brake
kb9tf is offline   Reply With Quote
Old 01-10-2015, 10:02 AM   #3
Senior Member
 
Sky_Boss's Avatar


 
Newmar Owners Club
Spartan Chassis
Join Date: Apr 2012
Location: ON THE ROAD...SOMEWHERE
Posts: 6,069
What coach, model and year do you have?

BTW...I normally see 140-150 PSI on the pressure gauges.

Also...it could be totally related to different systems but if I dump my airbags without lowering the jacks I MUST still use the STORE button in order to inflate the bags.
__________________
Don, Sandee & GSD Zeus. Guardian GSDs Gunny (7/11/15) & Thor (5/5/15)
2006 DSDP 4320, Spartan MM IFS, 2013 CR-V, Blue Ox Avail, SMI AF1, Samsung 197R Refer.
Sky_Boss is offline   Reply With Quote
Old 01-10-2015, 10:04 AM   #4
Senior Member
 
bamaboy473's Avatar
 
Join Date: Jun 2014
Location: Gulf Coast, Alabama
Posts: 1,734
Quote:
Originally Posted by kb9tf View Post
Sounds to me more like a stuck valve.
I'm asking a question along that same line. If it's a stuck valve, could it be that moisture gets into the system and cold weather might cause the mist to freeze?

Is there any kind of air dump, or moisture filter in those systems?
__________________
Rick and Sandy
2003 American Eagle, 52K miles
bamaboy473 is offline   Reply With Quote
Old 01-10-2015, 10:07 AM   #5
Senior Member
 
adonh's Avatar
 
Join Date: Apr 2013
Location: Missouri City, TX
Posts: 1,306
Quote:
Originally Posted by Sky_Boss View Post
What coach, model and year do you have?

BTW...I normally see 140-150 PSI on the pressure gauges.

Also...it could be totally related to different systems but if I dump my airbags without lowering the jacks I MUST still use the STORE button in order to inflate the bags.

2005 Airtream (Thor) 396 XL DP 39'. Normal air pressure is 120-125

Thanks
__________________
Don
2003 Forest River Cardinal Platinum 37' 5th Wheel
1976 31' Airstream
adonh is offline   Reply With Quote
Old 01-10-2015, 10:19 AM   #6
Senior Member
 
Sky_Boss's Avatar


 
Newmar Owners Club
Spartan Chassis
Join Date: Apr 2012
Location: ON THE ROAD...SOMEWHERE
Posts: 6,069
Quote:
Originally Posted by adonh View Post
2005 Airtream (Thor) 396 XL DP 39'. Normal air pressure is 120-125

Thanks
I'm sorry, it was early morning...I show 120-130 also.
__________________
Don, Sandee & GSD Zeus. Guardian GSDs Gunny (7/11/15) & Thor (5/5/15)
2006 DSDP 4320, Spartan MM IFS, 2013 CR-V, Blue Ox Avail, SMI AF1, Samsung 197R Refer.
Sky_Boss is offline   Reply With Quote
Old 01-10-2015, 10:28 AM   #7
Senior Member
 
Country Coach Owners Club
Join Date: Jan 2006
Location: Redding
Posts: 3,412
Agree with the stuck valve idea.

The gauges measure primarily your front and rear air brake air pressure.......

Do drain the brake system using the lanyards near each end of the axles or perhaps a dash mounted switch.

Also, you might want to execute the the DOT Pre-trip Air Brake tests to determine the status of your air brakes. (Many versions are available on the internet.)

The DOT test step of pumping down the system will also adjust your automatic slack adjusters in the process.
__________________
Dean
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
deandec is offline   Reply With Quote
Old 01-10-2015, 06:00 PM   #8
Senior Member
 
D Lindy's Avatar
 
Winnebago Owners Club
Join Date: Aug 2013
Posts: 1,635
Sounds like an air governor on the air compressor is acting up/ready to fail. Cheap and easy part to replace.
__________________

__________________
2012 Journey 40U (Our Incredible Journey)
2008 Dodge Dakota(TOAD) 2005 Honda Shadow in TOAD
AF-1 braking system
D Lindy is offline   Reply With Quote
Reply

Tags
chassis, class a, freightliner



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
I'm just wondering about the Wandering of the Ford Chassis on Class A's davidki Class A Motorhome Discussions 30 11-04-2014 05:43 PM
2011 MADP Freightliner Chassis vs 2010 MADP Spartan k2 Chassis Mr JP Newmar Owner's Forum 13 10-04-2014 10:08 PM
Loss of power on freightliner chassis Dfbowman Class A Motorhome Discussions 1 05-29-2014 01:06 AM
freightliner chassis problem lacdubonnet Freightliner Motorhome Chassis Forum 2 05-27-2014 10:52 AM
What model Freightliner chassis for a 99 HR Endeavor 37WDS DP 5.9L Cummins Bad Bolt Freightliner Motorhome Chassis Forum 7 03-27-2014 10:51 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:32 PM.


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