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Old 08-11-2015, 05:27 PM   #1
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Holding Tank Connection

We have a '92 Caribou 11JS camper. Last Summer I noticed the bumper being loose, tried to tighten the lag bolts holding it on and ended up rebuilding the entire lower back of the camper because the wood had deteriorated (rotted). With the rear floor support structure removed I needed to go inside the camper and in the process caused the floor to move down about 1.5" below the shower/toilet inside wall structure. I pushed this back up using a 2X6 and a floor jack, and put it all back together. Now there is a lot of odor coming from the bathroom area and I'm wondering if when the floor went down either the toilet or vent connection seal to the black water tank could have been broken and is still that way. Does anyone here know how these things are connected and what would be the easiest way to check that? I'd rather not pull the tank off if there is an easier way.

Thanks,

Steve
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Old 08-11-2015, 10:40 PM   #2
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If you can get eyes on the suspected area, put a hose in the toilet and fill the black tank. A leak should become evident.
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Old 08-13-2015, 11:33 AM   #3
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Thanks for your response BFlinn181.


Getting eyes on the suspected area is the problem as it is sandwiched between the bottom of the camper floor and the top of the holding tank. The problem is not a leak per se, but more of a suspected broken seal at the connection between the holding tank and either the vent or toilet. If I knew what that looked like I could probably figure out what to do about it.


Filling with water works perfectly as you suggest, I used that method to find a leak in our boat. The problems with using it in this case are that the only way to see the suspected area is to remove the holding tank which would be a last resort, and I'd just as soon not have whatever may be in the black water tank on our driveway as the water ran out.


Thanks again,


Stve
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Old 08-21-2015, 11:44 PM   #4
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My 92 Elkhorn has a flange that screws in to the tank. The toilet bolts to the flange take the nuts off the 2 bolts and disconnect the water line then you can remove the toilet. If the toilet did not come lose form the tank the seal should be good. Dose the toilet still hold water in the bowl? If not the seal in the bowl is leaking.
Hope this helps
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Old 08-22-2015, 12:03 PM   #5
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Thanks Fishing2.

I took the toilet off a week or so ago and the flange and foam seal under the toilet seemed to be intact. The foam seal was dry. If the flange screws in I would think it should still be OK. liquid in the bowl will seep out, or possibly evaporate, over time but it will stay in there for hours or days, generally until the next use. I think it is OK.

The bathroom in our camper is over a storage space and the plumbing that can be seen in there looks OK, except that the toilet to tank appears to have moved up a slight amount and the vent appears to have moved up an inch or so. Both of these in relation to the floor of the storage space. Any idea how the vent connects to the tank? My concern is that when the floor moved down either the toiler or vent may have disconnected from the tank, although I think from memory that the vent is sort of "free floating" after the connection at the tank except for a caulk seal where it comes through the floor. Somewhere I read that looking through the vent pipe from the top could be helpful. I'll try doing that today.

Thanks again for your help.

Steve
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Old 08-22-2015, 10:32 PM   #6
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Steve, the vent pipe on my Elkhorn is in the top of the tank with a hose clamp around it. It could pull out. When I had my tank out I just removed the clamp and the vent cap and pulled the pipe up

Dennis
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