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Old 07-31-2009, 03:28 AM   #1
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toilet filling up with wate

I have a 2007 3400 ,I drain my black tank and flush it out,a little while later i went into the bathrom . The toilet was full and overflowing.I first though I had left the flush water on,but I check and it was off. So then went back out and open the black tank and drain it and then clean up the mess. Well it happen again , WHAT DO YOU ALL THINK THE WATER VALVE,IT HASN'T DONE IT AGAIN
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Old 07-31-2009, 04:00 AM   #2
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Some thoughts:

I assume you have the black tank valve open when you are flushing your black tank.

Do you leave a hose connected to the black tank when not in use. If you do - the water can be turned on w/o you knowing or perhaps a shut off valve is not working properly. I had this happen to me and now the only time I have a hose on the black tank flush is when I'm doing it.

There has to be something wrong?
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Old 07-31-2009, 05:23 AM   #3
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The water can come from 3 places only, the backflush hose, the fresh water system or a washer. Since you say the backflush was off, I would disconnect it, it has to be the fresh water system or a washer draining into the black tank. That would indicate to me that the flush valve on the toilet is at fault, assuming a washer is not involved. If the black tank filled at the same time, check the entire flushing system since the water went through the fresh water valve and then through the bottom gate. You don't mention if you have a washer and if it drains to the black tank.

Edit; You also don't mention if you close the grey tank off from the black tank.

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Old 07-31-2009, 05:24 PM   #4
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We had the same situation where the valve for the hose we had connected to the black tank flush was not fully closed. I discovered it in the middle of the night when I sat down, in the dark, only to get my private parts wet. That sure woke me up in a hurry! Turned on the light and discovered a bowl full of brown water within an eyelash of overflowing. Pulled the dump handle, then investigated and found the valve almost closed but not quite. Now I have a short hose always connected to the flush. It now has a shutoff on the end, along with a quick connect. My regular black tank flush hose has quick connects and shutoffs on both ends. That gives me three chances to shut off the flow of water. I don't think we'll have that problem again.

This may not be your problem but as Steves said it's something to check.
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Old 07-31-2009, 05:52 PM   #5
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Old 07-31-2009, 07:37 PM   #6
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LOL Vickir... My sentiments exactly!

Have you ever heard something really disgusting that makes you laugh even though it should not be funny. Steve, you take the ticket on this one. Your description was way too accurate, imaginable and possible! I'll never take my black tank and its plumbing for granted again! Thanks for sharing.
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Old 08-01-2009, 04:00 AM   #7
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Our toilet also overflowed. The problem was the black tank flush valve. I had put a Y on the water supply with a short hose going to the black tank flush. The valve was almost turned off but not quite. I now do not leave the short hose attached but have a quick disconnect for attaching and removing. It won't happen again.
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Old 08-01-2009, 05:37 AM   #8
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way too graphic, Steve! I agree with Vicki!
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Old 08-01-2009, 07:45 AM   #9
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As Steve's problem with the fresh water supply to the toilet Mine didn't shut off all the way either, almost causing a over flow on the bowl the ball valve was closed all the way too, but this was in the day and I was luckey enugh to catch the valve error, I did get a new toilet from Tedford through Camping world the cost to fix it in parts was more than the cost of a new toilet, so they did let me upgrade the new toilet but I payed the differance in cost though.
this is my oppion on Tedford products they are good on warintee work but are using a lower grade product in the flushing mechinism.
Pulling a 2004, 2980 RL an oldie but goodie.
Tow vehicle is a 2009 RED RAM 3500 DRW.
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