Replace the grommet that those wires go through, seal the surfaces between
the grommet and tank hole with clear silicone, and your leak is done.Too
many volks that do and have been filling their water tanks in this manner
since the 90's that don't have leaks for this to be normal/standard.
bob

On Thu, Aug 27, 2009 at 8:18 PM, Troy <colorworks@gci.net> wrote:

> Not being able to leave well enough alone, I went out today and took the
> screen out of my 89 water filler hose/tube. The little RV fill valve now
> fits down that hole in the utility hookup and I can go full bore with the
> water. (nice I thought!) I went ahead and filled the tank up and suddenly I
> had a water drip too! Oh my!
>
> When I investigated further, I found that the water was leaking out the
> actual top of the tank. If you fill the water tank beyond the level of the
> fill tube it will leak out the top of the tank as it's not completely
> watertight. There are various hoses and wires that go down through the top
> and water can leak out of those. In my case, the actual top was a little bit
> loose, so I had a real mess!
>
> The moral of the story here is use your ears when filling. You will hear a
> steady "hiss" of air as you fill right up until the water reaches the
> filling tube, then it gets quiet--STOP here or your tank will leak. Those
> German engineers had good reason to put a dust flap or kind of check valve
> in the utility hookup as it stops the venting when water reaches the height
> of the inlet filler hose. So, caution is recommended or you'll end up
> rusting the floor of your van. Getting water out from under the flooring
> isn't easy. I'm now kind of kicking myself for breaking out the screen, but
> I can now fill the tank in a few minutes.
>
> So, there is you answer to your puzzling water drip Rocket.
>
> Troy
>