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06-11-2008, 11:44 AM
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#1
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Seasoned Camper
Join Date: Apr 2004
Location:
Posts: 69
M.O.C. #1423
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Gray water tank leak
Has anyone tried plastic welding or repairing the tank or will I be wasting my time? Crack is in the bottom of the tank so it would be subjected to all the weight. Thanks
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06-11-2008, 12:09 PM
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#2
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Montana Master
Join Date: Sep 2003
Location: Sunshine
Posts: 1,445
M.O.C. #538
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Rv stores have a patch kit for holding tanks. I patched my gray tank a few months ago. You need to get the tank DRY. Next time I will drain the tank and pull the trailer up on a ramp to run any water away from the crack.
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06-11-2008, 12:32 PM
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#3
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Montana Master
Join Date: Apr 2007
Location: South Shore
Posts: 6,009
M.O.C. #7110
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I tried to patch the grey tank with some putty like stuff that came from Wal-Mart. It was like 2 different colors of clay and when it was mixed it started setting up. I thought it would be a real fix, and it was supposed to seal even a gas tank and you could patch it while it was wet. However, it didn't work for me I wound up taking it to the dealer and having the tank replaced.
I have some pictures where I tried to patch the tank on this thread but here is one photo of the patch.
http://www.montanaowners.com/forums/...ad.php?t=25507
__________________
2011 GMC 4X4 dually CC, 6.6 Duramax with Allison Transmission. Formally 2001 Montana,2007 3400RL Montana, presently 2018 3401RS Alpine.
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06-11-2008, 02:25 PM
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#4
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Montana Master
Join Date: Nov 2002
Location: Bakersfield
Posts: 5,316
M.O.C. #15
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We've had pretty good luck using a radiator patch kit. They are not cheap. I think they are about $15 each. Make sure you are ready to apply because the stuff stiffens up in a hurry. Also be sure and use the fiber glass swatch that comes with it. We had a gray tank leaking and the patch seems to be working fine. It's been about 2 years now since we first applied it.
HamRad
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06-11-2008, 02:31 PM
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#5
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Montana Master
Join Date: Sep 2003
Location: Sunshine
Posts: 1,445
M.O.C. #538
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The patch kit is made by AP Products. I don't think CW carries it.
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06-12-2008, 12:43 AM
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#6
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Seasoned Camper
Join Date: Apr 2004
Location:
Posts: 69
M.O.C. #1423
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Thanks, I am going to try to patch it and see how it will hold up.
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06-14-2008, 02:48 PM
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#7
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Seasoned Camper
Join Date: Apr 2004
Location:
Posts: 69
M.O.C. #1423
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Well, I have my fingers crossed. The crack was about 1 inch long. I sanded the area & took my soldering iron and "melted" along the crack. That stopped the leak. I still covered the area with "JB Weld" for plastic. I put about 25 gallons of water in the tank and is has not leaked for 2 days now. I'll see how long it will hold.
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06-14-2008, 03:05 PM
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#8
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Montana Master
Join Date: Nov 2002
Location: Bakersfield
Posts: 5,316
M.O.C. #15
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Mark,
Thank you for posting about the "welding" job. I hope it continues to work for you. Guess I'll finally have to give it a shot.
Dennis
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