344M - unidentified sound

[Paulbegin]

I have a 344M toy hauler, I have a humming sound that repeats itself every 2 seconds coming from the right front side about under the tub area. Any ideas what it could be? and how to stop it?

 

[triplethreat]

I moved this to the correct section.........Momentum models

 

[Wileykid]

I have a 344M toy hauler, I have a humming sound that repeats itself every 2 seconds coming from the right front side about under the tub area. Any ideas what it could be? and how to stop it?

I am not sure where the water pump is located on that trailer, but you may want to check if it is on. If it is on, and you have air in the system, it may be re-pressurizing the system, then shutting off, and will continue to do that until the air, or leak is out of the system.