Air horn problem

[Glen M]

My air horn on my 97 MADP is not working – any ideas how to fix it?
The electric horn works
The dash switch for the air horn is on
The system has proper air pressure

Thanks

[Glen M]

My air horn on my 97 MADP is not working – any ideas how to fix it?
The electric horn works
The dash switch for the air horn is on
The system has proper air pressure

Thanks

[RV Wizard]

Find the air horn solenoid, usually in the left front compartment or on the fire wall over generator. Have someone push the horn button while you check to see if you get 12 volts to the solenoid. If you do, then tap on the solenoid, it may be stuck. If this brings it back to life check to see if you need to replace the air filter/drier to remove moister in the air system. This sould be done every two years. Also use the air horns more often. If this does not come back to life and you do have the 12 volts to operate the solenoid, a new solenoid will be needed.
If you find you do not have 12 volts DC, you will need to trace it back until you find where you lost it at. Could be a bad switch or a broken connection. Aways check your grounds too.

[myrons]

my air horn quit working on my spartan chassis. the problem was the air valve. the rubber seal had stuck to the seat and would not allow air to pass thru- i took it apart and tuned the seal around to the unused surface. it has worked find for the last 3 years.

[RV Wizard]

myrons, welcome to our website and forum. Thanks you for the assistance in helping our fellow members with a problem. We hope you will be an active participant and look forward to having you join us in many discussions. Take care and stay safe.