Originally Posted by Triplec
I checked pressure on both systems at the 2 front portsmark front and rear tanks in the front of the MH and both are reading around 135 psi.
So, you are hooking up your portable gauge to the bottom two drain ports on the drain manifold?
The top two are both wet tank. One a supply for air'ing tires etc, the other, a wet tank drain, and hookup for a tow truck.