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01-10-2015, 05:58 PM
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#1
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Senior Member
Country Coach Owners Club
Join Date: Aug 2014
Location: SoCal
Posts: 116
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Air Horns stopped working
My air horns stopped working when I press the steering wheel horn recently though they worked fine a week ago. I located some brochure on the air horns that came with my MH and they indicate that there should be a separate air compressor and air tank for the system and that the horn button simple activates a solenoid near by the air tank that release air into the horns. Any ideas as to where I would find the air tank, air compressor or solenoid for the air horns? I've looked closely in the front basement compartment underneath the drivers chair area with no luck. I've also searched under the front corners of the coach and don't see them anywhere.
Is it possible the air horns run off my coach air systems? My owners manuals and related diagrams don't show any air horn systems other then one wiring diagram indicating that the horn button wire is #57.
Thanks for any help you can give me.
__________________
Tim Sullivan, 2016 Winnebago Era 170A. (Formerly: Two different VW Westfalia Camper Vans; 1984 Itasca 31' Windcruiser MH; 1993 Holiday Rambler 33' MH; 2000 Country Coach Magna DP MH)
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01-10-2015, 07:06 PM
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#2
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Senior Member
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,609
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If this is a DP, I would say that there's a good chance the air horns run off the coach's air supply.
Generally the solenoid is under the hood.
A lot of times there is a dash switch to allow switching from "city" horns to "highway" horns.
This reminds me of the time I prepared myself for battle with the air horn system on ours that had quit out of the clear blue like you describe. I located the relay, lines, solenoid, etc, and was in the process of checking out the city/highway switch after removing it from the back side of the dashboard. With no joy there, it occurred to me I might check the horn fuse? Sure enough.....
__________________
1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
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01-10-2015, 07:25 PM
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#3
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Member
Join Date: Dec 2014
Location: Texas
Posts: 87
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Air tanks are underneath the MH so they can bleed moisture and oil when needed.
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01-11-2015, 06:35 AM
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#4
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,563
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Kind of suprising that a DP would have separate air supply for the air horns when it already has its own onboard air system. However, they do make air horns that have their own built-in compressor, powered by 12v electric. They are typically used on coaches without an air system, e.g. gas-engine coaches with hydraulic brake systems. Maybe CC used that kind of system on your coach to avoid running air lines to the horn location, e.g. up on the roof.
In either case, the horn button activates a solenoid to toot the horn. That solenoid either opens an air valve (on-board air system) or powers the horns own mini-compressor that spins up and blows the horn. Chances are that either the solenoid has quit or the fuse for 12v power has blown.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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01-11-2015, 06:54 AM
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#5
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Moderator Emeritus
Country Coach Owners Club Freightliner Owners Club
Join Date: Sep 2004
Location: Glen Allen, VA
Posts: 7,902
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Tim, obviously my Allure may be set up differently but take another look in the bay under the driver's window. There should be a couple of fuse boxes with labels. I think there is a horn fuse that you can check.
My horns run off the coach air supply. The solenoid that sends air to the horns is mounted in that bay near the lower front wall. It has a 1/4" yellow nylon air line coming out of the top. If the relay has gotten some crud in it, you might give it a tap with a tool to see if that frees it up.
One of my horns quit working. I called Hadley and they said to remove the back of the horn, clean the thin metal diaphragm and reinstall. It cured my problem. Probably not your issue if both horns have quit.
Let us know what you find.
__________________
2007 Country Coach Allure Siskiyou Summit, sold/traded Nov. 2018.
2019 Grand Designs 384GK-R 5th wheel. Glen Allen, VA
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01-11-2015, 06:56 AM
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#6
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Senior Member
American Coach Owners Club
Join Date: Jan 2011
Posts: 2,742
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Mine went a couple months ago-- ordered and installed a new Solenoid
Mine is plumbed from one of my 2 air tanks.
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Chuck
Brownsburg Indiana
1992 American Eagle-8.3C-450hp
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01-11-2015, 08:18 AM
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#7
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Senior Member
Join Date: Aug 2012
Posts: 1,580
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Are you now in freezing temperatures? Compressed air will have moisture in it that could freeze and block the pipes.
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01-11-2015, 04:15 PM
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#8
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Mar 2012
Location: Weston, Fl.
Posts: 916
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If you can find a air solenoid somewhere up front, have DW press the horn switch and you give that little bugger a good rap with a stout hammer. Might work, might not..
Good luck
__________________
2003 Newmar Kountry Star 3905, Freightliner XC chassis with CAT 330. Winnie the black lab, pretty Airbus captain wife, retired airline pilot with 11 grandkids. UH-1 pilot (Huey) U.S. Army 1967-1983. RVN 68-69. Northern Idaho my summer home.
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01-11-2015, 05:22 PM
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#9
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Registered User
Join Date: May 2005
Location: Milford,CT.
Posts: 2,237
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I thought on my 98 Magna there was a seperate small compressor right in front of the generator battery?
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01-11-2015, 08:29 PM
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#10
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Senior Member
Country Coach Owners Club
Join Date: Aug 2014
Location: SoCal
Posts: 116
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Okay, thanks to all of you. I'll try to I.D. both the fuse location -- and check it as well as the solenoid location--and give her a god rap.
__________________
Tim Sullivan, 2016 Winnebago Era 170A. (Formerly: Two different VW Westfalia Camper Vans; 1984 Itasca 31' Windcruiser MH; 1993 Holiday Rambler 33' MH; 2000 Country Coach Magna DP MH)
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01-11-2015, 09:13 PM
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#11
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
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Tim.....Do you ever set things on the steering wheel when parked. Many like to tilt the wheel up and use it as a table. This will sometimes depress the horn (which will not sound when the air is dumped) and will often blow a fuse.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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