Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Alpine Coach Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-08-2008, 05:49 PM   #1
Senior Member
 
Join Date: May 2008
Location: Washington
Posts: 101
I noticed that when my Alpine is parked in the garage for a week or longer the air suspension on the passanger side is completly evacuated while the driver side is not.

Is this normal. I never noticed it before
__________________

__________________
Tom and Sue
2005 Alpine FDQS
tinytom 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 11-08-2008, 05:49 PM   #2
Senior Member
 
Join Date: May 2008
Location: Washington
Posts: 101
I noticed that when my Alpine is parked in the garage for a week or longer the air suspension on the passanger side is completly evacuated while the driver side is not.

Is this normal. I never noticed it before
__________________

__________________
Tom and Sue
2005 Alpine FDQS
tinytom is offline   Reply With Quote
Old 11-08-2008, 06:32 PM   #3
Senior Member
 
Country Coach Owners Club
Join Date: Jun 2006
Location: Carson City, NV/Surprise, AZ/Florence, OR
Posts: 267
Assuming your garage is level, I would guess something is leaking, or otherwise out of adjustment.
__________________
Jim and Sally & Rufus the Lakeland Terrier
2001, 40' Country Coach Affinity, towing a 2005 Ford Explorer Sport Trac
Carson City,NV, Surprise,AZ, Florence,OR
big jimbo is offline   Reply With Quote
Old 11-08-2008, 09:45 PM   #4
Senior Member
 
Alpine Owners Club
Join Date: Jun 2007
Posts: 222
I have the exact same problem; and with mine, parked in front of the house, it looks bad so I pump it back up. I have checked and tightened all connections' I could get to, at the bags and ride height valves. Is there a check valve somewhere downline that might have failed? Does anyone have an air line schematic?
__________________
Matt & Lorraine Moniz
'05-36MDDS Alpine / '14 Honda CRV
Sunnyvale, CA
zinom is offline   Reply With Quote
Old 11-09-2008, 07:09 AM   #5
Senior Member
 
Algoma's Avatar


 
Join Date: Nov 2007
Location: Charleston, WV
Posts: 2,639
I wouldn't start up the engine just to re-inflate the suspension. In fact what I do is dump the air if I park for any length of time. This keeps the coach level and lowers the entry step.
__________________
John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
Algoma is online now   Reply With Quote
Old 11-09-2008, 07:47 AM   #6
Senior Member
 
Join Date: Feb 2006
Location: Manhattan Beach, CA
Posts: 563
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Algoma:
I wouldn't start up the engine just to re-inflate the suspension. In fact what I do is dump the air if I park for any length of time. This keeps the coach level and lowers the entry step. </div></BLOCKQUOTE>I've always done that, but very recently an RV service tech told me not to do it unless the jacks are down because it is possible to cause problems with the air bags. He thinks the upper and lower air bag mounts can put undue pressure on the bags perhaps causing a puncture or tear. Anyone know for sure?
__________________
Rick Coleman
'05 Alpine 36MDDS
Rick Coleman is offline   Reply With Quote
Old 11-09-2008, 07:54 AM   #7
Senior Member
 
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,217
IMO dumping the air is better than periodic re-inflating as a work-around for this problem. Your air dryer takes time to warm up and start working; it has an electric heating element to dry the air at least to start, but that takes time to hit efficiency, so frequent short operations of the engine's air compressor will put moisture into the air system that stays, which isn't optimum. Ditto w/short engine op's; you don't hit steady state operating temp so combustion isn't optimum & cataclysmic converter isn't working (both accumulate moisture if cycled for short run times). Cycling of dry air (and proper temp combustion gas) over several highway miles cycles new moisture back out, so start-then-drive keeps your air system dry as a rule and engine/exhaust systems clean.

There is a leak somewhere that can be found by using a soap solution on connections starting at the bag, then working toward the air compressor. Obviously it isn't bad enough to affect highway ride or you'd notice the listing to one side.
__________________
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
EngineerMike is offline   Reply With Quote
Old 11-09-2008, 11:57 AM   #8
Senior Member
 
Algoma's Avatar


 
Join Date: Nov 2007
Location: Charleston, WV
Posts: 2,639
Rick,
If you are parked on level ground the jacks don't do anything. They touch the ground but don't lift the coach at all, so I don't see the tech's argument here. I guess you could manually force the jacks to lift but I have never seen that recommended.

My understanding is that the front and rear suspension are somewhat separated as they operate at different pressures. If there is a leak surely it should only affect one corner or maybe the front or rear but I don't see how a leak could cause the front and rear on one side to go down.
__________________
John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
Algoma is online now   Reply With Quote
Old 11-12-2008, 09:54 AM   #9
Senior Member
 
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
Tom,

I have had a problem with air loss from the left front while parked for a few days. I haven't checked it yet as I am normally on jacks. I plan to check for leaks with soapy water from the air bag to the ride height control. Any leak behind the valve should not affect any wheel unless there is a leak in the valve. The air comes in from main supply, thru the ride height control valve, thru the air dump valve and to the air bag. If there no leaks in those areas I will deplete the air from the main system thru the drain valve in the rear, then take the "air in" line off of the ride height control and see if there is any leak thru the valve it self.

John,

I am quite sure that the air pressure in the system is the same every where. The air pressure in the bag is dependent on the pressure required to keep the bag at a certain height. This is accomplished by the ride height control. The ride height control just opens, allowing air into the bag when the height is too low and vents air when the height is too high. Most Alpines have a ride height control for each wheel. I don't know for sure, but think that the real early coaches may only have one per axle.
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
dgerstel is offline   Reply With Quote
Old 11-15-2008, 12:49 PM   #10
Member
 
Join Date: Jul 2003
Location: Durham, NC
Posts: 93
I had the same problen onmy '98. I had the local truck garage replace the height adjuster and it was fixed.
__________________
Richard and Cris
Durham, NC
2004 Alpine Ltd. 36 mds
Richard and Cris is offline   Reply With Quote
Old 06-21-2009, 06:57 PM   #11
Senior Member
 
Join Date: May 2008
Location: Washington
Posts: 101
Found the problem, It turns out the rear ride height level was a half inch low got it adjusted no more air bleed off
__________________

__________________
Tom and Sue
2005 Alpine FDQS
tinytom 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
suspension air bags doghouse Roadmaster Motorhome Chassis Forum 23 01-16-2009 06:51 PM
Kelderman Air Suspension Sammie Ford Motorhome Chassis Forum 3 11-26-2007 04:43 AM
Stabil Air Suspension JJ Simba05 FLSTCI02 Workhorse and Chevrolet Chassis Motorhome Forum 12 12-06-2006 04:42 AM
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 05:43 PM.


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