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Old 07-06-2009, 04:38 PM   #1
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Unhappy cant seem to get black tank completely cleaned out

We have a 8296ss and whenever we empty the black tank, it never empties completely, we have done it ourselves and have also had it pumped out by the tanker..However, it is never completely empty. We have used the device that attaches to the hose and whips around with still no success. We are in a permanent spot so it doesnt get any of the sloshing around as it would if we traveled. Anyone have and similar problems...I thought that I should be able to see the bottom of the tank when empty. Any suggestions...

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Old 07-06-2009, 05:20 PM   #2
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If you are on a slight grade, the black tank drain be higher than the holding tank.


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Old 07-06-2009, 05:26 PM   #3
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when you say a slight grade, are we talking a noticeable one..we are on a very level lot, we just leveled again at the beginning of the season...should we check again?
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Old 07-06-2009, 10:19 PM   #4
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are you adding plenty of water before using/dumping?
This will help solids to run out better.
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Old 07-07-2009, 06:27 AM   #5
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Now that you have the trailer level, it's time to crawl under and check level on your black tank. It really shouldn't be level, but lean slightly toward drain. Check for a broken support strap. May have to shim the tank to make it drain properly.
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Old 07-07-2009, 06:31 AM   #6
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My brother had the same problem with his at a permanent site, he fills his half full and put some RidX in it while it sat during the week and did it for a month said it help out alot he also said he always leaves a half a tank water in it now and uses the RidX about once a month
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Old 07-07-2009, 10:37 AM   #7
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We do have plenty of water in the tank before dumping, when they pump it from the truck, we fill the tank as full as we can get in hopes that it will pull it all out, but that hasnt worked either..As far as checking the straps, are they hard to get to being that the under belly of the trailer is all enclosed? I will give the rid x a shot too, hey it cant hurt...thanks for all the suggestions and we will keep trying to get it emptied completely.. I can just remember that our other trailer tank was very visible when it was empty and this one is not..I was always concerned about the winter too, so we just always threw some antifreeze down to be safe...but if anyone has anymore suggestions please keep them coming and I will keep trying them...thanks to all
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Old 07-07-2009, 06:06 PM   #8
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Blue eyes you probably just have a little debris hung up on the sensor like toilet paper.The sensors are just a screw with a wire attached to it and when it touches anything it complete the circut and makes the light come on. So just try to flush it throughly and you should be ok
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Old 07-08-2009, 04:19 AM   #9
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I am on a seasonal site for the first time, but always had problems with emptying the black tank completely. When I dump after the first pull of the drain valve and everything slows down I then go in side and flush the toilet and prop the flush handle in the open position and leave it there so that the water continues to run and then back wash from the out side, this seems to get everything stirred up and moving......I put the lid down, turn on the bathroom exhaust and close the bathroom doors just in case of odors. This seems to work for me.
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Old 07-08-2009, 10:21 AM   #10
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rockwood, I pretty much have done the same thing that you are saying and still have not been able to empty completely, maybe thats as good as it gets,,,My sensors are another story, but everyone seems to say dont pay attention to them and we dont...The problem with the tank is one that you can see from looking into it, I never use the sensors...We considered the flush system but not sure how difficult it will be to install with the enclosed under belly. Everyone who has one says that they work well,, anyone of you folks have one installed? thanks for the suggestions..

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