I am hoping someone will have an idea about a strange noise from our coach. Both times it happened, the coach was leveled and I pushed the foot brake prior to releasing the park brake so the coach would go to travel height. When I pushed the foot brake, I heard a loud pop that I can best describe as sounding like a balloon popping. It seemed to come from somewhere in the front of the coach. The first time, my wife was standing outside behind the coach, and the pop was loud enough that she heard it, even over the engine noise. Neither time could I recreate the sound when I tried. When I tried the same process again, everything was normal. Also, the coach has operated normally following this both times. I am not too worried since everything works fine, but I would still like to know what caused these sounds. Any ideas?
Maybe you put your ABS system in test. I believe when you do that you should hear 4 pops. One from each ABS brake module.
Check to see if both front brake actuators are working. With the good brake systems the coach has you could have popped a diaphragm in one of the front cans and not notice it driving.