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06-06-2012, 04:36 AM
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#1
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Member
Join Date: Jun 2012
Location: Riverview, FL
Posts: 32
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Crack in black tank
While traveling through Ohio I had a chunk of tire fly up and hit the black tank for the rear bathroom and cause a 4" crack. It didn't take any pieces of the tank out, just a straight line crack. Has anybody had any luck with repairing a crack of will the entire tank need to be replaced?
I was thinking of using a marine grade JB Weld on it.
Any help is appreciated.
Thanks,
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Daniel
2015 Sprinter 316BIK
2015 Ford F150
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06-06-2012, 05:09 AM
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#2
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Senior Member
Join Date: Jan 2012
Location: Central San Joaguin Valley, CA
Posts: 2,117
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If you try to repair the tank, I would "stop-drill" each end of the crack first.
I wonder if you could find a flat piece of like material (maybe from another damaged tank) and glue it over the crack as a patch?
I don't know how much these tanks are and would all that be worth the trouble
Good luck!
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Jack & Marty
2018 Laredo 298 SRL
2011 F-250 SB Crew Cab 4x4 6.7L
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06-06-2012, 05:27 AM
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#3
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Junior Member
Join Date: Jan 2012
Location: Illinois
Posts: 21
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There's a similar discussion going on at RV.net. Here is the link http://www.rv.net/forum/index.cfm/fu...d/26103717.cfm
I repaired a crack on brothers truck camper. Used 6" wide fiberglass drywall tape, and Vulkem 116 caulking. Vulkem manufacturers website says, it can be used for patching ponds and swimming pools.
Going on three years since we did the tank repair, no leaks.
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06-06-2012, 02:45 PM
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#4
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Senior Member
Join Date: May 2012
Location: North Florida
Posts: 1,241
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I repaired a small crack one time with some RTV sealant and it held good. If the crack is in an area that gets a lot of pressure when the tank is full
__________________
2006 Keystone Hornet 29RLS (The Cracker Cabana)
2009 F-250 SuperDuty CC 6.8L/4.10 (The Black Pearl)
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06-08-2012, 05:25 PM
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#5
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Member
Join Date: Jun 2012
Location: Riverview, FL
Posts: 32
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I called the tank manufacturer and they advised using ABS glue on the crack, so I tried that yesterday. I am going to let it set up a few days before I fill it up with water so fingers are crossed.
2008 Ford F350
2009 Cougar 293SAB
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Daniel
2015 Sprinter 316BIK
2015 Ford F150
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06-08-2012, 06:39 PM
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#6
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,997
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Just a thought, I've never done this, but Harbor Freight is one of my "favorite stores" and they have a plastic welder for about $30 or so. I wonder if that might make a permanent repair in holding tanks or even in fresh water tanks? Has anyone done any plastic welding? If so, how did it go?
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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06-20-2012, 12:26 AM
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#7
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Senior Member
Join Date: Jan 2012
Location: Carlsbad, Ca
Posts: 176
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On my previous TT I had a crack in the gray tank. I used a permatex repair kit which included a Fiberglass patch and epoxy that gets warm when mixed and applied. Repair was instant and was still holding when I sold her 2 yrs later. And yes I drilled small holes on each end of 5 inch crack. Should this TT ever develop a crack I will use the same stuff. The hardest part of the repair was having to lay under the TT. Good luck.
Sent from my iPhone using Tapatalk
__________________
Mingo
Sprinter 299rls
Chevy 2500HD Crewcab
Go Padres!!
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07-08-2012, 06:40 PM
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#8
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Member
Join Date: Jun 2012
Location: Riverview, FL
Posts: 32
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Ok I used the ABS glue as advised from the manufacturer, let it setup a few days then I put an epoxy putty over the entire area and let it setup good.
We've been camping twice since, first time I didn't let the kids use the back bathroom because I wanted it all to setup a little longer. This camping trip they used their bathroom and all looked good.
So hopefully all that worked and will hold, if not new tank it will be but I want to avoid that.
Thanks for all the help with ideas everybody!!
__________________
Daniel
2015 Sprinter 316BIK
2015 Ford F150
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07-08-2012, 10:51 PM
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#9
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Senior Member
Join Date: Jan 2012
Location: Carlsbad, Ca
Posts: 176
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Glad to hear that worked out for you. Good job!
Sent from my iPhone using Tapatalk
__________________
Mingo
Sprinter 299rls
Chevy 2500HD Crewcab
Go Padres!!
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