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Old 07-05-2017, 01:39 AM   #1
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Black water tank

2012 31sl...... leaks black water when lights indicate 2/3 full any ideas? Have had to cut plastic bottom to drain....figure on taking bottom cover down tomorrow....
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Old 07-05-2017, 02:12 AM   #2
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The main problem is the level sensors, they are NEVER accurate. All of mine have read 1/3 or 2/3 regardless of how much is in them, I don't even look at them anymore as they tell me nothing.
Do you have a clear fitting when draining so you can tell when it's actually empty?
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Old 07-05-2017, 02:53 AM   #3
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I would bet that your waste pipe is not properly seated on the tank. It is a friction fit with plumbers caulk around the edge of the pipe where it fits over the waste tank. If it is not positioned correctly you will get waste water dripping and collecting in the pan. I would not cut it, just remove the screws and stay out of the way!
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Old 07-05-2017, 02:56 AM   #4
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This is what it looks like.
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Old 07-05-2017, 02:49 PM   #5
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Thank you all will report back my findings if I don't drown.......
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Old 07-05-2017, 09:31 PM   #6
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Black water

O rings had a kink as gate valve had been changed prior to our purchase....
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Old 07-05-2017, 09:38 PM   #7
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At least it is a simple fix. Double check to make sure the black tank is up on the cross members. While you have it open I would run some strapping between the two supports to keep them tight where the tank sits. I had my cross members spread enough for the tank to drop
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Old 07-05-2017, 10:17 PM   #8
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that is my next project on it when we get home.......I want to thank all of you for your input and help........GREAT GROUP!!!!!!
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Old 07-13-2017, 04:37 PM   #9
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BLack Tank Guages

On my old coach when I had the belly down I replaced all the probes with SeeLevel Guages so much better. (Blue tape make shure of placement before fixing)
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Old 07-18-2017, 02:04 AM   #10
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That's a nice upgrade!! Thanks for sharing!!
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