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Old 09-13-2010, 08:51 PM   #11
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i've been going thru this myself here is what I've...

found. the toilet seal to the black tank was bad. its a $5 fix plus 1 hour if you take your time. the local RV mechanic suggested that 10yrs is very old for a seal. Most don't make it nearly that long. I'm not sure if this is your problem but it sound just like mine.

I was surprised that the toilet is hollow and the black tank "vopors" for lack of a better term are inside the toilet. No, the water in the bottom of the bowl isn't the only thing keeping the smell at bay. there is a rubber seal around the perimeter between the top of the bowl and the cover. the cover is what you see when you lift the lid/seat. if that seal goes bad, the "vopors" can leak there. there are a bunch of screws that hold this cover to the bowl. Also, where the water enters the bowl is another penetration that could leak the vapors. Under mine is two cheap plastic hoses that could break. One of these hoses is for the water to enter the bowl and the other goes from the water port in the bowl to a port just above the black tank hole. It seems that this will put some water into the tank with every flush.

Oh yeh, the inside of the toilet was contaminated with, well you know, the stuff that should be in the tank. I tried to clean out the toilet, but it wouldn't budge. If the wife would see that, I would have to buy another potty.

bob
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Old 09-13-2010, 08:59 PM   #12
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My Rockwood is 2 years old (bought new a year ago) & has been used on 3 occasions.

The odour doesn't seem to be that bad in the bathroom, more so out in the rest of the trailer.
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Old 09-15-2010, 12:47 AM   #13
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This sounds like a silly question, but when you dumped was the tank reading full? Was each dump after that also with a tank reading full? You obviously shouldn't be smelling anything but, if your not dumping a full tank you'd be surprised at how much will be left in the tank.

If you have not had a chance to read about the"Geo Method" of maintaing your black tank I would try starting there. I would also advise getting a "Flush King".

I had been camping recently at a state park with electric only. When it came time to leave we proceeded to dump as normal but, since there was no hose connection we couldn't use our Flush King. We belived we did an excellent job flushing the black tank.

Our next trip was a full hook up KOA. I back filled with the Flush King just out of curiosity and dumped as soon as we where set up. I wanted to see if anything was left from last trip. I was shocked to say the least.
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Old 09-15-2010, 05:46 AM   #14
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Why would there be any more left in the tank if it were less than full when dumped? We dump whenever we are leaving a CG if there is more than 1/4 of a tank. We dump then flush and have had any problem.
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Old 09-15-2010, 10:52 AM   #15
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There are many threads here about why you should never dump a partially full black tank. The short answer is that it takes a long time to break down solids and paper. They have a tendency to "stick" to the floor and walls of the tank; especially directly under the hopper. The drop point is also in the vicinity of the wall sensors in most installations and paper drooping on the sensor heads is the most likely cause of false tank readings.

Calgon water softener added before you use the tank is supposed to limit the sticking of solids to the bottom and sides of the tank. (My experience with this is positive)

You need a "large volume" of water to sweep that crud out of the tank along with any undissolved paper. The corporate knowledge is to fill the tank till at least the full light comes on (about 2/3 full) before you actually pull the handle to ensure a complete dump.

The flush/rinse system on most installations just shoots water at the wall opposite the sensors. It is located at the top of the tank and most likely will not do much to clean your top sensors or loosen stuck crud unless you let it fill the tank a couple of times.

Photo of black tank and location of white "turboflush" line can be seen in this photo:

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Old 09-15-2010, 10:56 AM   #16
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When I've dumped the grey tank, the indicator has shown that it's 2/3s full. I'm hoping to go on a short trip next week. I'll make sure both tanks are full (adding water if necesssary) before dumping. The TT will be winterized afterwards.
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Old 09-19-2010, 06:38 PM   #17
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We're off tomorrow for 3 nights @ Arrowhead PP north of Huntsville. Yesterday, I topped up the grey & black tanks & will dump when I get there. I'll make sure the tanks are full before I dump when we leave.

The odour has pretty much left the trailer. Hopefully I won't have the same problems this week.
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Old 09-23-2010, 08:55 PM   #18
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I've got good news to report. I dumped the tanks when we arrived & had no smells thru the week.

Today I added water to bring the levels up to 2/3s then dumped. Since I was going to be passing thru Algonquin PP on the way home (& could use their RV dump as well) I added 10 gallons of water & some dish soap to the black tank. I dumped again & flushed w/ some more water.

Again, no odours inside the trailer. I'm hoping the odour after the Indy trip was just a fluke.

As soon as I get my RV antifreeze, I'll be winterizing the trailer.
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Old 09-23-2010, 09:11 PM   #19
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Definitely sounds like the inline vent had unseated under the sink. I just picked a new one up at Home Depot where the plumping guy asked me if I wanted the legal CSA approved one @ 29$ or the un CSA approved one for $7.00. The $7.00 one is identical to the one in my trailer. (1 under the kitchen sink and another under the bath sink)
So much for the Canadian CSA approval sticker which adds aprox $300 to cost of so called Canadian approved trailer.
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