Water tank info

[glen1971]

The odd time I've noticed some water leaking from the underskin on the trailer. I cut a couple of small holes in it last year and let the water drain out. Not lots, but enough to notice on the street. Our first thought was maybe rain water, but I couldn't see how any water could get there..
Then I de-winterized the trailer this spring and nothing came out. After filling the water tank to the top and then some, it leaked again when I pulled the trailer out onto the street. My guess is that there is a clamp that holds the fill line to the fitting on the outside of the trailer and it may be loose, as it only seems to be a problem when the tank is super full..
Could this be correct? How can one fix it? It doesn't look like the tank fill line enters the trailer itself (from what I can see).. Would it come into the trailer? Is it worth ripping the skin underneath the trailer off to try and get at it?

The trailer is a 26TBQB..

Thanks!

[glen1971]

So I got thinkin the other night and pulled off the cover for the hot water tank, and the water tank fill and vent lines do run through this area... So now I'm guessing it is a loose connection to the top of the tank with either the vent or the fill lines... How tough are they to get to? Does anyone have a pic of what the top of the tank connections look like?

[glen1971]

Well we tackled finding this little leak today when we got home.. Removed most of the underneath skin on the trailer and filled the water tank. It started leaking right away and as suspected it was from the fill connection, which was on the side of the tank within the top 1 1/2" of the tank. The clamp on it wasn't properly tightened at the time of installation. Whoever installed it was smart enough to put the nut facing up... We drained out enough water so it was below the fill port, loosened the clamp, repositioned the screw head and tightened it. We checked and made sure it was installed enough on to the tank, which had a piece about an 1 1/2" long to secure the hose to. The other 3 connections go to female threaded type hubs on the tank and crimped plastic pipe.. We refilled the tank and she was dry as a bone!
Now I just gotta get some spray in foam and reseal it to the bottom of the frame.. Which by the way is a PITA to reinstall as it was tough to stretch.. Fortunately my wife was a trooper and she got right in there to help!

[Broadway Joe]

Good to hear that you got this resolved. Happy camping.

[Slannesh]

I don't suppose you have any pictures? I have almost the exact same thing happening on my 2011 Lacrosse 318BHS and want to avoid taking off as much of the underbelly as possible.