Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

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 11-29-2017, 07:50 PM   #1
Junior Member
 
Join Date: Nov 2017
Location: Yorba Linda, CA
Posts: 28
Noisy Air Dump, Freightliner

Sounds like a piccolo pete on the 4th of July when I dump the air tank(s). (2014 Phaeton on Freightliner Chassis) Campers run for the hills and Homeland Security shows up to investigate. Thought it was the front valve located under one of the two tanks but turns out is is coming from near the rear axle. Can't pinpoint exactly where. Anyone have similar experience here? ... not running for the hills though.
ODaleigh 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 11-29-2017, 08:02 PM   #2
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
You could locate the valve and add a "muffler" of some type to it. For me, it only sounds for a couple of seconds, so no big deal.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
Dutch Star Don is offline   Reply With Quote
Old 11-29-2017, 08:03 PM   #3
Senior Member
 
saddlesore's Avatar


 
Foretravel Owners Club
Join Date: Apr 2016
Location: Home is Where WE PARK IT...
Posts: 6,018
Quote:
Originally Posted by MD-14 Phatn View Post
Sounds like a piccolo pete on the 4th of July when I dump the air tank(s). (2014 Phaeton on Freightliner Chassis) Campers run for the hills and Homeland Security shows up to investigate. Thought it was the front valve located under one of the two tanks but turns out is is coming from near the rear axle. Can't pinpoint exactly where. Anyone have similar experience here? ... not running for the hills though.
Rear air dump/leveling valve if leveling, otherwise if when you pull the parking brake button, it is the air exhaust vent on the air/spring brake canisters.
__________________
Retired truckdriver,
'02 Foretravel... "This Shack will do"
being pushed by an '06 Scion xB
SKP's of Box Elder, South Dakota
saddlesore is offline   Reply With Quote
Old 11-29-2017, 08:04 PM   #4
Senior Member
 
doorguy's Avatar
 
Winnebago Owners Club
Join Date: Mar 2011
Location: Fairfield, CA
Posts: 768
I had the same issue, sounded like a loud whistle that went on forever. I installed Henderson's Line-Up motion control units on each air bag line, 4 in my case, to help with the rocking motion going in and out of driveways. It did help that issue, but as a side bonus which I did not know, when I dump the air, it has quieted down the noise more than half. Hope this helps.
__________________
Barry & Sue Miller("extended" RVer's, 6 mos + per/year) combined trips.
04 Journey 39K, C-7, 330 hp, towing: 13 Ford Edge AWD, or 19 GMC Canyon 4WD, ReadyBrake.
doorguy is offline   Reply With Quote
Old 11-29-2017, 10:32 PM   #5
Junior Member
 
Join Date: Nov 2017
Location: Yorba Linda, CA
Posts: 28
Thanks all. Good stuff. My situation is similar to that described by Doorguy. Long whistle. I hadn't considered the air bag control. Assumed it was all in the dump valve. I also get some of the rock and roll around park lots. May be able to kill two birds with one stone. Thanks for recommendation.
ODaleigh is offline   Reply With Quote
Old 11-29-2017, 10:52 PM   #6
Senior Member
 
guardrail53's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 4,245
Should just be the sound of air escaping from the system, sounds like you have something stuck in the exhaust of the dump valve? Take some "brake clean" and spray up the exhaust port of the dump valve to clean it out!
On my old Monaco, they put the dump valves, air governor, and the fuel filter in the rear engine access area, all on the right side! Very easy to service them!
Rail!
Click image for larger version

Name:	thumbnail (Motor in Mona).jpg
Views:	194
Size:	100.0 KB
ID:	184240

If you click on the pic you can enlarge it, look to the top left of the fuel filter, you will see the two dump valves, and to the left of them is the air governor!
__________________
Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed, 2001 PT Cruiser, "Bailey"
guardrail53 is offline   Reply With Quote
Old 11-30-2017, 10:34 AM   #7
Junior Member
 
Join Date: Nov 2017
Location: Yorba Linda, CA
Posts: 28
Very nice. Thanks. Yep, pretty sure it's the dump valve. The sound is like that of a partially-opened valve. Maybe dirt, as you suggested, or a restriction in the mechanism. Not as easy to see on my rear-radiator coach. It appears to be tucked up by the rear axle. Your pic will help me identify it when I, ugh, climb under. (yep, will block the chassis while I'm under there).
ODaleigh is offline   Reply With Quote
Old 11-30-2017, 12:59 PM   #8
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,626
Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Never heard of that one! Keep her between the ditches!

Good luck, happy trails, and God bless!
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is offline   Reply With Quote
Reply

Tags
air, 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
To Air Dump or Not To Air Dump Andersku Monaco Owner's Forum 15 05-12-2015 12:58 PM
Noisy suspension air dump valve doorguy Freightliner Motorhome Chassis Forum 9 11-07-2014 10:57 PM
To dump or not to dump chirohand Monaco Owner's Forum 11 11-30-2008 02:01 PM
To Dump or Not To Dump (air bags) bris48 Newmar Owner's Forum 5 12-18-2007 02:13 PM
When to dump or not dump? Brigadoon MH-General Discussions & Problems 6 07-31-2005 01:13 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 08:00 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.