Fresh Water Lost in Traveling Uphill

[Creeker]

Same problem with ours since day one. No other leaks or cracks in tank, they simply installed the vent too low. I rolled up a short piece of weather stripping into a roll and placed it in the vent hole after removing the screen. It doesn't fit tight enough to completely seal but it absolutely stopped the siphoning. I've used that same piece of weather stripping for over a year and arrive with a full tank of water every trip.

[Kevinpark]

I had the same issue. Every time I got to camp, I found water had sloshed out the vent. I regularly lost a third of my fresh water on the drive. I dropped the belly pan and added 15 feet of vent hose. I replaced the existing vent hose and curled the hose up above the water tank. The hose was then strapped io the frame with wire ties. The new vent hose was then attached To the existing vent cover. So far, stared and ended my drive with a full tank of fresh water.

[Champ]

Originally Posted by GrahamLock

Where is the vent cover on the 3120? That is what I have, and I haven't noticed it.

It’s on the drivers side towards the rear.