- Jan 13, 2005
I hear a pump kind of noise periodically coming from some of our neighbors' coaches, which I assumed was their water pump. Chris was on board one of the coaches when the noise occurred and, when she asked what it was, the owner said it was the auto air levelling system. He said that the system automatically re-levels the coach every few hours. I'm left wondering why, if the coach hasn't moved and if there's no air leak, the coach would need re-levelling. Can anyone shed any light on this?