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Old 06-20-2011, 08:29 PM   #1
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1971 27' Overlander
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HELP! Tank may be completely broken.

Help, there has been an incredibly bad stench coming from below where we sleep. I emptied out the tank (which was obviously full) but yet the it smells just as bad if not worse directly under our bed. I own a 1971 Airstream Overlander. Our tank seems to be falling down out the back. It smells like there is waste literally seeping down right below where we sleep. Any recommendations? Tank replacement options? Can anyone relate? Thanks,

-Jesse
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Old 06-20-2011, 09:18 PM   #2
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Originally Posted by jesse_kevon View Post
1971 Airstream Overlander. Our tank seems to be falling down out the back. Thanks,

-Jesse
Jesse, Can you take pictures of this and post them? You may have bigger issues.
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Old 06-20-2011, 09:44 PM   #3
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Can't figure out how to use the photo uploader, but here is a link to a pic of what's going on with my trailer. http://i101.photobucket.com/albums/m...6/IMAG0173.jpg
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Old 06-20-2011, 09:57 PM   #4
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Do you have any more pics? It is a little had to get the big picture. This might help. http://www.airforums.com/forums/f138...tml#post612569.

You might have to drop the rear part of the belly pan to see what is really going on.
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Old 06-20-2011, 11:22 PM   #5
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it looks like your rear frame has rusted out. The tank may be the least of your worries.
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Old 06-20-2011, 11:56 PM   #6
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Yeah the rear is rusted out, I am going to use a recycled bedframe to weld on the back to support the rear. It just smells incredibly bad right below our bad (yesterday and today) I thought it was just because the dump was full, but it still smells almost worse than before.
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Old 06-21-2011, 12:59 AM   #7
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Probably you have a broken fitting and the stuff from the tank has soaked the insulation and spreading the smell. Better open up the belly and pull out the insulation and get out the hose and rinse everything out.
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Old 06-21-2011, 05:08 AM   #8
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The tank is supported by two pieces of angle iron that span frame to frame. One that you should see the back portion of the photo at the bottom of the tank tray. The other is just rear of where you see the two sections of frame protruding in the belly just rear of the rear axle. The rear one at least has obviously broken - letting the tank and tray sag.

The way it looks, as you release the belly pan the tank and tray will collapse out of the trailer on you. Might be best to support the tank/tray with a 2 by and a couple of jacks - cut the belly out around the tank/tray - then lower it down. Good luck....
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Old 06-21-2011, 07:24 AM   #9
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Take it all down so you can fix it right. The frame will need work. At the very least take this opportunity to paint POR-15 on all the rusty frame parts. I would use a heavier gauge angle iron then an old bed frame for the supports. A full tank weighs a lot. This is a job you want to fix right and only one time. On a 68 the black tank rests inside a galvanized box and the box rest on the angle iron supports that run across from the frame rails. There are tabs welded on the frame rail to bolt the supports into. Don't know about yours but if the box galvanized box is gone you can get one made at any good sheet metal shop that does HVAC duct work.
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Old 10-03-2011, 10:38 AM   #10
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Tank replacement question:

I've got a '69 Overlander that may have a waste tank issue, also.
(Seeping from gate valve, and bad odor.)
Which way does the tank come out? Do I remove it from underneath, or do I tear out the bathroom floor?
If I do it underneath, do I just drill out the rivets, remove the sheet metal underbelly, and remove supports, etc? Do I weld in new supports?
What's the best way to flush out the tank before I pull it? I'm not the original owner and I don't want to get contaminated. Is there a chemical flush to use?
Thanks!
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Old 10-03-2011, 10:44 AM   #11
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I don't know about the replacement, but anything that is in there may be stuff you do not wish to deal with, but it is not nuclear waste. If the tank will hold water long enough to fill it with a strong clorox solution you will be fine. If not, and you are reasonably careful, you will also be fine.
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Old 10-03-2011, 10:51 AM   #12
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Clorox?

So, if I add Clorox to the tank, and take a quick drive around the block a couple times, and go to a RV dump site, I should be able to empty/flush the tank pretty well?
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Old 10-03-2011, 11:03 AM   #13
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Yes. Don't hesitate to put a gal or so of clorox in it, only $2 or so. Let it sit, if possible for an hour or two, after your drive around to mix it up. Then go dump it.
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Old 10-03-2011, 11:48 AM   #14
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Quote:
Originally Posted by edglenn View Post
I've got a '69 Overlander that may have a waste tank issue, also.
(Seeping from gate valve, and bad odor.)
Which way does the tank come out? Do I remove it from underneath, or do I tear out the bathroom floor?
If I do it underneath, do I just drill out the rivets, remove the sheet metal underbelly, and remove supports, etc? Do I weld in new supports?
What's the best way to flush out the tank before I pull it? I'm not the original owner and I don't want to get contaminated. Is there a chemical flush to use?
Thanks!
That black water tank, is removed from underneath.

You must also remove the toilet and the toilet floor flange.

Lastly, the vent pipe connection must also be removed, or cut , so that you can remove the tank.

Andy
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