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Old 10-10-2011, 04:46 AM   #1
lmckee000
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what are black and grey tanks made of?

We have crack in black and grey tank of 2012 Summerland 2600TB...does anyone know what these or made of ? ABS or poly???
please help
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Old 10-10-2011, 05:15 AM   #2
SteveC7010
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Quote:
Originally Posted by lmckee000 View Post
We have crack in black and grey tank of 2012 Summerland 2600TB...does anyone know what these or made of ? ABS or poly???
please help
If they are black in color, then they are made out of ABS.

Where is the crack? How big is it? Are you contemplating patching it yourself?

Pics would be helpful.
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Old 10-10-2011, 01:26 PM   #3
lmckee000
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Yes we have ordered Plasti Meld, the chemically reactive solvent that binds abs back together, heard amazing things about it.... Bottomed out in the grass, pushed both drain spouts up and they cracked under neath the spouts below where tank meets spout, one crack is maybe 6-7 " and another about 4"....took a pic but cant even see crack it is so thin and not pulled apart.
thanks for response
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Old 10-11-2011, 08:29 PM   #4
hankaye
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lmckee000, Howdy;

Did alot of fiberglass and sheetmetal repairs when I was in the service.

One thing most folks do not do is locate the very ends of the cracks. It's a MUST DO. when you do take a small drill and approx. 2X the width of the crack at the end. Something like a #60 to a #50 will most likely do. and then drill what is known as a "Stop Drill" hole. This allowes the crack to end in a clean manner and will stop it from spreading. Even after the repair is done.

hankaye
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Old 10-12-2011, 04:49 AM   #5
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Quote:
Originally Posted by hankaye View Post
lmckee000, Howdy;

Did alot of fiberglass and sheetmetal repairs when I was in the service.

One thing most folks do not do is locate the very ends of the cracks. It's a MUST DO. when you do take a small drill and approx. 2X the width of the crack at the end. Something like a #60 to a #50 will most likely do. and then drill what is known as a "Stop Drill" hole. This allowes the crack to end in a clean manner and will stop it from spreading. Even after the repair is done.

hankaye
This is very good to know I would have never thought of that. This is why I like this forum LOTS OF GOOD ADVICE.
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Old 10-12-2011, 05:24 AM   #6
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There are a number of other issues to repairing cracks in ABS tanks and pipes.

Cracks also need to be enlarged rather than just brushing the patching goop on top of the surface. Usually a crack is opened up to a "V" shape with a knife or file or a dremel tool or similar. This gives much more surface area for the cement to bond to.

Prep the surface by cleaning with acetone.

The cement mixture needs to be applied in light coats to build-up a good bond. Coat it, let it dry overnight, lightly sand (#400 or so), re-coat covering a slightly larger area. Repeat several times until the "V" is filled.

You don't need to purchase expensive patching material. A scrap of ABS and some ABS cement from the plumbing section of your local home improvement store will do the trick. Grind up a bunch of ABS shavings with a rasp or coarse file and then mix with some of the cement. Works great.

A number of my friends over on the Sunline Club have dealt with this issue and written up some good instructions with pictures. For more detail:

http://www.sunlineclub.com/forums/f7...air-10514.html

http://www.sunlineclub.com/forums/f7...ank-10504.html

http://www.sunlineclub.com/forums/f6...1550-8896.html

http://www.sunlineclub.com/forums/f7...ics-10555.html

Given the sheer number of Keystone trailers already manufactured, I would guess that this repair will come up over and over again.
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Old 10-12-2011, 09:47 AM   #7
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WHAT EVER YOU DO FOLLOW HANKAYE'S ADVICE AND STOP DRILL IT. OR YOU WILL HAVE THE LONGEST CRACK IN THE WORLD LATER.
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