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Old 05-27-2007, 09:13 PM   #1
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Arlington Hts , Illinois
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1964 Globetrotter rotten back end

Years ago I did a fair amount of work on a 1974 Overlander, and I thought I learned everything that could go wrong on an Airstream. Boy, was I mistaken!

Meet Mabel, a 1964 Globetrotter. I believe that she has experienced at least one battery acid spill over the years, as I don't know what else could have caused her back end to rot so badly. I don't have the resources to make Mabel an immaculate gem, but I need to make her usable. Right now the bw tank is not secure and had detached from the toilet (so I removed it). Now I need to figure out a way to remove the tank, rebuild some kind of pan for it, then reinstall and rebuild the back end. I would really appreciate some suggestions on how to proceed.

On day one, I have cut away some of the rot. Images follow.




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Old 05-27-2007, 11:43 PM   #2
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MT. Vernon , Washington
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On some trailers, the black tank is secured by metal straps attached to the frame; sort of "hung" from it. You might make a support system with wood members to hold the tank in place...VK

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Old 05-28-2007, 06:36 AM   #3
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Wow - in this case there is no quick fix - unless you look at a hunk of plywood and set a porta potti on top - and replace the belly skin.

To do that job right you need to remove the bathroom - or at the very least the toilet section completely - pull the floor in that area - have a welder come up and get you sorted out underneath.

Either fix the fiberglass Blk tank or get a new poly one made.

What could damage it so bad???

TIME WATER and ICE! Looks like the bulging in that tank is suspect of going to bed full for the winter - I would have hated to be where ever she sat when she blew - at least it would have been frozen but the spring would have brought a huge mess.

Corrosion look just like acid - pitting spots resemble acid spills but it is simply water sitting or dripping over time.

Good Luck with the repairs.
Everything will be alright in the end. If it is not alright now, then it is not the end.
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Old 05-28-2007, 10:37 PM   #4
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Thanks for the thoughts. I got the bw tank all the way out today. It seems intact, but the fittings are in dubious condition, so I think I will order a replacement. I am pondering having some angle iron welded into place to hold it in. Whatever I do, I will report here with pics.
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Old 06-14-2007, 06:27 PM   #5
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1964 19' Globetrotter
Portland , Oregon
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My 64 Globetrotter had the exact same problem.

I removed the bathroom module. I removed the black water tank from above. The tank holder was rusted as badly as yours. I unbolted it and took the rusted remains to a steel fabricator. He made me a new one using the rusted one as a pattern(It was $350).

The black water drain valve was shot also. The new one I recieved was about 1/2 inch longer than the original. I made the fitting of the tank in it holder very tight, but it fit.

The floor under the toliet was dry rotted. I replaced about 6 feet of the floor under the toliet assy and bathroom. I painted all the new plywood with a good oil based paint to slow the dry rot down(I hope!!)
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Old 06-28-2007, 09:44 PM   #6
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Thanks for your comments, 64tr0tter. It's nice to know I wasn't alone with this issue. Fortunately, I have found a source for a replacment tank, and plan to use padded steel straps bolted to the frame to hold it in place. Will post pix when I get back to that part of the project.

My latest progress is that I replaced the 1964 univolt with an Intellipower charging unit, and just tonight finished replacing the original rear ceiling vent fan with a Fantastic Fan. Yippee!

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1964, 1964 globetrotter

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