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Tank support


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We are in AZ and I found that our gray tank leaks when full. I normally leave it open until I need the extra water when dumping the black. I had to have a service come out and the tech said this happens often in Keystone units. With the bottom pan off I crawled under the 5th wheel and could see how this happens, as the tanks top ledge sets on a set of square rails and nothing supports the bottom. I am going to put two straps on each tank while I can get to them. I believe the stress of the weight even empty bouncing along the roads puts stress on the top seams and they split. Anyone have this type of situation?

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When I changed the black water tank in our Teton I used a number of 1" square tube runners under a piece of 1/4" ply to hold the tank. This is the way the factory had them. A piece of high density foam about 1/2" went between the plywood and tank to further displace the support points.

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