Leaky fresh water tank

[nellie the elephant]

I was camping at Joshua Tree NP with the family over the weekend....a place that has absolutly no running water. Hence before leaving, I filled the water tank to the brim, and noticed a bit of dripping on the outside/front, which I just atriubuted to over-filling spilliage. However, once I arrived (in the dark), I noticed the carpet was wet near the entry and under the banquet. I moved the cushions around and discovered that water was seaping out of the water tank from a source that I couldn't see. I ended up draining almost half of the tank until it stopped (the crack must have been above that point). Anyway, I will pull the tank out and look at it for possible repair, or replacement. It is a 1966 22' Safari.

Has anyone had experience that they can share...what kind of material to use to repair a crack, should I just replace the whole thing, any info/experience would be helpful.

Thanks.

[59toaster]

Aluminum Cylinder tank with the fill neck on the front of the coach?

On our 59 the fill neck is a few inches below the top of the tank. It threads in. If the tank is aluminum the pipe the screws in has to be Aluminum. If it's not aluminum it was cause corrosion from the dissimular metals.
The tank is not real hard to remove but you might need to pull the goucho out to do it. My bet is the leak is where the fill neck screws into the main tank body and as long as it's not a major corrosion problem it should be easy to resolve. Some pipe thread sealer and reinstall the neck. Chekc it for leaks outside the coach and reinstall.

[nellie the elephant]

Thanks for your reply, however I did check around the neck fill pretty thouroughly on the inside, and I couldn't find the leak. The tank is plastic. You're right that it should be pretty easy to remove, and I'll just have to fill it up once removed (after somehow plugging up the drain holes down low), and just see where it leaks from.

[drboyd]

I've got some stuff that will seal anything to anything, even - believe it or not - underwater. I used it to seal the drain threads on my Fresh water tank. PM me if you need the name.

-Don