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05-14-2013, 07:01 AM
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#1
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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BLACK WATER TANK
We empty our black water and grey water tanks every 3 days. The past couple of times we emptied it, it was full the next day. Any idea where this water could be coming from. We unhooked the hose that we used to add water after we dumped it and there was no leak there.
??????????????????? Baffled for sure
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05-14-2013, 07:20 AM
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#2
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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Which tank was full, black or gray or galley? What model and year rig do your have? Do you have a washer and/or dryer? The only thing that empties into the black tank is from the toilet, but t seems there was previous forum discussions that there were some model years where the washer drain went into the black tank. The gray tank is filled by the shower and bathroom sink (ditto on the washer remark), and the galley tank is filled by the kitchen sink only. Please provide additional details which will assist in getting answers for your rig.
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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05-14-2013, 07:51 AM
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#3
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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We have a 2002 5th wheel. It was the black water tank that was full. We don't have a washer and dryer. Thanks
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05-14-2013, 08:40 AM
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#4
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Montana Fan
Join Date: Mar 2013
Location: Healdsburg
Posts: 273
M.O.C. #13339
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Flush valve not fully closing? But that would fill the bowl.. unless there was also a bowl seal leaking from bowl to black tank.
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05-14-2013, 09:09 AM
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#5
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Montana Master
Join Date: Feb 2012
Location: Beaufort
Posts: 545
M.O.C. #12221
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Are you sure it was full or just the gauge saying it's full? If the latter I'll lay odds that your gauge is just reading poorly and the tank is truly empty. The guages are notoriously unreliable and mine will often read full very quickly when I know it's not. Very common problem.
With the two of us - I can get about 2 weeks boodocking on a black tank. I use time since dumping as my primary tank level indicator.
You would know when its starts to get full as it starts to "burp" that is when you fill it with some water and then hit the flush - an air bubble comes up thru the water as it flushes.
When it starts doing that you have a day or so left and its time to empty the tank.
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05-14-2013, 09:14 AM
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#6
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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Oh no it was the black water and it was full. Yesterday my husband could actually see it stay in the toilet when he flushed. I believe I've figured it out. I went out and opened just the gray water and nothing came out. So I figure the flap or whatever opens and closes is stuck open. Have no idea how to remedy that one. Thanks for the replies.
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05-14-2013, 09:14 AM
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#7
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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P.S. We have never trusted the gauges...
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05-14-2013, 09:22 AM
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#8
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Montana Master
Join Date: Feb 2012
Location: Beaufort
Posts: 545
M.O.C. #12221
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You said that you opened the gray water and nothing came out... do you mean you opened the black tank valve?
Not knowing your rig... first you might want to check behind your convenience center if you have one... the valve push/pull cable might be disconnected or broken at the back side.
Otherwise, follow your sewer line to where it goes into the tank.. Your signature doesn't specify which rig you have or its age so its hard to help much. But your black tank should be under the toilet.
You can probably access your tank valve from under the rig by dropping down the cover some. You might also be able to get to it thru the basement wall.
If you let everyone know what model and year you have someone may be able to help better. either way - if your push pull is cable is good at the handle you need to get access to your gate valve for some immediate relief.
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05-14-2013, 09:31 AM
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#9
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Montana Master
Join Date: Feb 2012
Location: Beaufort
Posts: 545
M.O.C. #12221
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Oh and another possibility is that you have an obstruction in the discharge line. Sometimes the plug from when they cut the tank is left. Hopefully is not that. You will need to roter router the discharge line if its plugged. first check and make sure its not just a broken or disconnected valve cable.
You said that you empty the tanks every 3 days. Unless you are using them ALOT and using a lot of water that is a pretty high frequency to be dumping the black tank.
It's better to wait till the tank is more full so you get a better flushing action. There might not be enough water in the tank after 3 days to effectively move the solids and they will build up over time. Good luck
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05-14-2013, 09:44 AM
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#10
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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It's a 2002 Montana 5th wheel model #3295 RK; 34'.
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05-14-2013, 09:50 AM
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#11
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Sounds like your cable is disconnected or broken. Looking behind the convenience center is your best first step. If the valve is truly open then you most likely have an obstruction just past it in the pipe. RV stores sell a device that you can connect between your sewer hose and the line coming out of your rig (if you have a sewer boom you'll want to disconnect it and hook the device where the boom hose was connected). You then attach a garden hose and it backflushes up your outlet pipe. You could do this with just the hose and not the device, but if you are successful at dislodging a clog you don't want to be holding a hose at the end of the pipe let alone not have it connected to the sewer.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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05-14-2013, 10:13 AM
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#12
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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I do not believe the 2002 models had the convenience center, seems like it came in 2005-6. Here are a couple of questions that may help us. Do you have three dump valves, black, gray and galley? If so, a quick test you can do is turn the bathroom sink on with the gray tank valve open and see if there is discharge. A clear elbow will assist with this. If there is discharge, then close the gray tank valve and see if the discharge stops. This will tell you whether the gray tank is functioning properly. If there is no discharge from the gray when the sink is running, repeat this process with the black tank after emptying it fully first. This will tell you if the plumbing from the sink is going to the proper tank. I would repeat this with the shower as well. I am wondering if a previous owner changed the plumbing. If all of the drainage is going to the proper places, then you need to verify that the valves are emptying properly. When the black and gray tanks are full and are being discharged, the initial flow will fill the clear elbow completely. I am suspecting that you have solids buildup in your black tank which is either keeping it from emptying completely or limiting its storage capacity. If that is the case you may need to have a flush wand to see if you can dislodge the solid material. Keep us informed, these are simple systems and it will be a simple solution once the problem is identified.
Bingo
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05-17-2013, 10:35 AM
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#13
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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Thanks to all it seems to be working properly now. Don't know why. Maybe it fixed itself. Anyway we'll take all the miracles we can get.
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