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Old 09-13-2014, 02:13 PM   #1
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Black Tank Leak

Has anyone had an issue with the black tank plumbing between the tank and the dump valve leaking? I've developed a small leak on this pipe but cannot get at it to check it or repair it. There is a white board with the outside shower faucet in front of this black water pipe and I cannot see how to remove it. I've included a picture of the board that is in my way. Anyone have any ideas on how to remove this so I can be sure where this leak is?

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Old 09-13-2014, 05:34 PM   #2
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There is nothing worse than a black tank leak! I had a similar leak develop after experiencing a "water hammer" event. I turned too close to a stop sign and it jarred the coach so violently that it sent black water with the force of a hammer toward the outlet. This caused the flange at the end of the tank to crack. Did you jar your coach? In an effort to fix the leak, I cut a square hole in the white wall because the alternative was to dismantle the entire water bay. When I first looked at removing panels, I found screws in places that I could not access. There are ways to repair polyethelene but my unit is in the shop waiting for a back tank replacement. Good luck.
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Old 09-13-2014, 06:23 PM   #3
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I do not remember jarring the coach enough to cause something like this but I have been driving in Newfoundland and Nova Scotia for 3 months and may have been on a bad road or two. When you cut a hole in the white wall were you able to see the problem? Sorry to hear you have to replace your tank.

Thanks for your reply
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Old 09-13-2014, 06:30 PM   #4
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Yes. My black tank is on the right. By cutting a roughly 10x 8 hole I could see and work on the flange and outlet pipe. If I had been successful, I would have placed a white cover over the hole.
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Old 09-13-2014, 10:59 PM   #5
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I had my gray tank replaced and they had to cut that board out to get it out. I didn't see them cut it but I did see it removed. The replaced the tank and put a new white board in.


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Old 09-13-2014, 11:21 PM   #6
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I only wish it had been my grey tank
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Old 09-14-2014, 02:08 AM   #7
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Good idea about the white cover. Had not thought of that. I'll work on this as soon as I get a place convenient and then post a reply. Thanks for the info.
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Old 09-15-2014, 07:55 AM   #8
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Mine is leaking also

Mine is leaking at the joint where the pipe from the black tank attaches to the "y" joint right before the valve. I talked to Forest River and he said it takes about an hour to remove everything to get to the area. He did not mention cutting anything out.

My coach is a still under warranty so I will have to take it back to the shop for repair...
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Old 09-15-2014, 07:55 AM   #9
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I had a leak in a similar location of the black tank. I thought it was just the discharge pipe that needed replacement. I had an extended warranty and they ended up replacing the whole black tank. Fortunately, the warranty covered it.


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Old 09-15-2014, 08:04 AM   #10
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I'm waiting to hear back from Mitch at FR to see if there is an easier way to access these pipe. Thank you for your reply.
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