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Old 06-12-2018, 06:49 PM   #1
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Water tank falling out due to leak in grey tank PLEASE HELP

I have a 2011 keystone 322 and I noticed it looked like something was sagging on the undercarriage behind the read axel so I took off the cardboard cover and found that my holding tank looked to be bowing down. I don't know if it is suppose to be oval like this or if they are square and my tank is going bad. It looks like the supports are behind bent down. If they are is there a way to fix? maybe weld new supports? Any advice would be greatly appreciated.

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Old 06-12-2018, 07:14 PM   #2
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Put new supports in out of heavier material......weld or bolts ....
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Old 06-12-2018, 07:51 PM   #3
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Im trying to load pictures to show what Im talking about. New on the forums so having a little trouble posting them correctly.


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Old 06-12-2018, 08:00 PM   #4
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A lot of folks also have that problem....just take your time....
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Old 06-12-2018, 09:07 PM   #5
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Square tube around the same size or slightly larger will provide allot more strength with little added weight.
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Old 06-12-2018, 10:08 PM   #6
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Square tube around the same size or slightly larger will provide allot more strength with little added weight.
Ok Ill drain the tank and fab up some square tubing but what about the tank? it almost permanently deformed now, should I bother with buying a new tank or will the tank just settle in with new supports?
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Old 06-13-2018, 06:11 AM   #7
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Unless the tank is leaking I would not replace it. It assumed a new shape once it should do it again (slowly).
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Old 06-13-2018, 03:13 PM   #8
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Unless the tank is leaking I would not replace it. It assumed a new shape once it should do it again (slowly).
No leaks so ok great, just a little metal work and everything should be good. Thanks for the help!
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Old 06-13-2018, 09:17 PM   #9
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The current metal supports look corroded or rusted in one area. What caused that?
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Old 06-13-2018, 09:45 PM   #10
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The current metal supports look corroded or rusted in one area. What caused that?
They are, I think from the tank bowing down caused the insulation to create a bowl affect so as dew and moisture would build it would puddle in that low spot created.
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Old 06-14-2018, 05:46 AM   #11
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Just a thought. When you are replacing the supports be sure to allow for their easy removal in case the tank ever needs to be replaced.


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Old 06-14-2018, 06:29 AM   #12
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Just a thought. When you are replacing the supports be sure to allow for their easy removal in case the tank ever needs to be replaced.




For sure. Use bolts when possible.
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Old 06-14-2018, 02:40 PM   #13
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Just a thought. When you are replacing the supports be sure to allow for their easy removal in case the tank ever needs to be replaced.


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Ok will do. Right now they are just screwed in with self tappers that half of them are halfway backed out.
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Old 06-14-2018, 03:48 PM   #14
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You must use the fresh water tank a lot. I would at least check on replacing with a larger tank. Evaluate cost and difficulty and if doable I would replace with a larger tank. If your analysis says to difficult then that is ok too.

Think of this as an opportunity to reinforce the tank and make it better then factory. Kinda like all my fixes are always better than factory. Bolts replace screws, screws replace staples, 1/2" plywood replaces 3/8" plywood etc.
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