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01-11-2024, 02:44 PM
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#1
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New Member
Join Date: Aug 2023
Location: Caldwell
Posts: 8
M.O.C. #33221
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Black tank leak issue
2012 3100RL I have been chasing a black tank leak when tank is almost full. After removing the underside I think I have found the issue. The tank seems to be two piece. A contoured bottom and a flat top. The leak is coming from the seam in the front of the tank just above the flush hose inlet. Has anyone dropped the black tank on one of these. Any input is appreciated. I might try drying and using a abs cement
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01-11-2024, 03:16 PM
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#2
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,695
M.O.C. #4831
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That is a common point of failure on the 2 part tanks. Do a Search to see what others have done. You will probably wind up dropping the tank.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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01-11-2024, 06:15 PM
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#3
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 3,038
M.O.C. #5651
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I think a lot of people with this problem have used some sort of epoxy or such to patch it.
By the way, I was having a leak 7-8 years ago in the same area. Turned out the hose connecting the back flush was not screwed in properly. Might check that out first.
__________________
Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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01-12-2024, 07:20 AM
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#4
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Montana Master
Join Date: May 2006
Location:
Posts: 1,733
M.O.C. #5751
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I fixed a black tank leak with JB Weld.
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01-20-2024, 06:58 PM
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#5
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New Member
Join Date: Aug 2023
Location: Caldwell
Posts: 8
M.O.C. #33221
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Update
I cleaned the area of the two piece tank (the front center) with brake clean. I then took ABS cement and pushed the cement into the area where the top meets the bottom of the tank. After letting cement dry, I used black Eterna Bond tape and covered the seam. After the next day I filled the tank and, No leaks. Even using the tank flush on full tank, no leaks. Not sure how long it will last but better than dropping the tank.
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01-20-2024, 07:27 PM
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#6
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Montana Master
Join Date: Jan 2018
Location: Granger TX
Posts: 2,598
M.O.C. #21044
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Good to hear and thanks for the update.
__________________
MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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01-24-2024, 02:27 PM
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#7
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Montana Master
Join Date: Oct 2015
Location: westminster md
Posts: 2,328
M.O.C. #17894
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Number one if your unit is sitting level while you're using it should never get full enough to leak at that seam. If it is it's being overfilled probably what caused the problem.
Number two you should never travel with anything in any of the waste tanks with the exception of just going to the dump station.
I have not had mine out but I know how they come out because I've been all up and around that area.
The tank sits on two rails with one of the Rails removable.
I suppose if I was going to try and repair it I would have to have it out and see exactly what is leaking and how bad
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01-24-2024, 03:58 PM
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#8
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New Member
Join Date: Aug 2017
Location: Rohnert Park
Posts: 8
M.O.C. #20306
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Black tank leak issue
The tank is made of black PVC. My tank split at the top and I repaired it with black pvc glue from the hardware store. I also glued a strip of pvc on top of the crack to reinforce it. That has been 3 years now with no problems
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01-24-2024, 04:20 PM
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#9
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Established Member
Join Date: Feb 2019
Location: Lebanon
Posts: 29
M.O.C. #23462
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No matter how you go about the repair it will help to find a way to support the bottom of the tank. The tank manufacturer says the tank must have supports at the bottom not just supported by the rim. I had to replace our galley tank and used 2" wide nylon strapping to loop under the tank and over the frame members.
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01-24-2024, 05:30 PM
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#10
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,774
M.O.C. #12947
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Quote:
Originally Posted by mtibbet
The tank is made of black PVC. My tank split at the top and I repaired it with black pvc glue from the hardware store. I also glued a strip of pvc on top of the crack to reinforce it. That has been 3 years now with no problems
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No, not PVC. The tanks prior to when they changed to the rotomold style of tank were all ABS, and ABS glue is what is used on ABS plumbing pipe and fitings.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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