Leaking grey water tank - Fiberglass RV


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Old 02-10-2017, 09:34 AM   #1
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Name: David
Trailer: 2013 Scamp 16'
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Leaking grey water tank

I'm embarrassed by the drip from my grey water exhaust point. I'll post a photo. Is there a slip joint there to tighten? It's under the metal hanging strap.
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Disassemble? Caulk?
My tape didn't work.
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Old 02-10-2017, 11:21 AM   #2
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Name: Gordon
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Cant tell much by the photo. Is there tape covering the leak in the photo? Did the tank (at the connection) scrape the ground somewhere? It looks like it in the photo.
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Old 02-10-2017, 11:31 AM   #3
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I suggest making sure the tank is empty and flushed. Put a plank under the wheel on that side so that any remaining water in the tank will collect on the other side of the tank and not leak here. Remove the tape and find out where the leak is. If a fitting is broken replace it. If you have a crack in your tank, clean it well, sand thoroughly with some rough sandpaper at least 2 inches all around the crack and use "seal all" to repair it.
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Old 02-10-2017, 11:58 AM   #4
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leaking tank

Dsironi,
I had the same problem and I cleaned and sprayed flex seal on a joint in my gray tank. Been a year and still holding. Hope this helps
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Old 02-10-2017, 02:58 PM   #5
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The Flex seal and seal all are a good ideas. Additional glues : Plumbers GOOP or some Epoxy that works in wet locations.
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Old 02-10-2017, 05:57 PM   #6
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If you go to the home store and look at plastic glues, there is a common disclaimer that it "works with most plastics". The plastics that it doesn't work with, polyethelene and polypropalene, are those that are commonly used in the RV industry for holding tanks. These plastics can be "welded" at a repair shop with the proper equipment and a sacrificial plastic rod.
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Old 02-10-2017, 09:13 PM   #7
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I would use fiberglass cloth and Bondo resin
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Old 06-14-2017, 01:58 PM   #8
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Now that the weather has been nice, I cleaned the connection. The leak appeared to be from the joint of the exiting pipe from the tank. Scamp said that the tanks arrive with that joint in tact. They do not assemble that exit pipe.
I used liquid Flex Seal liberally around the joint, applying with an old tooth brush.
No leak has occurred after 4 days at Peninsula State Park last week, our favorite state park.
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Old 06-14-2017, 03:37 PM   #9
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I had the same leak. I took my Dremel and a black piece of ABS coupling I got at our Lowes and ground me up some "shavings". Took Acetone and mixed it and made a nice "glue". It's been on there 2 yrs now and no leaks. It simply "melted" back into the tank.

Any tips I would offer? Yep...WORK FAST!

Here's some photos of my fix:
https://www.flickr.com/photos/503516...57651814663431
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