I recently bought a 2010 Roadtrek RS Adventurous. I've noticed a strong sewage smell when we use the black tank. I've completely emptied and cleaned the black tank. The odor is gone. However, if I fill the black tank with water it overflows under the RV when the water gets to the top of the tank where it meets the 3" drain pipe from the toilet. (I can see the water level at the bottom of the toilet with a flashlight). I'm thinking it might be leaking at that joint or at the joint where the vent pipe meets the black tank. I'm trying to figure out what it will take to drop the black tank to get at these connections. Any ideas? I haven't found anything on the internet describing how one might do this.
2010 Roadtrek RS Adventurous