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Old 03-24-2013, 09:24 AM   #1
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Cannot open the Black Tank "valve"

I have a new Cottage and I find myself unable to open the dank to DUMP. There is resistance when I pull the handle but nothing happens. I have done a hose from top and bottom as well as a snake from both directions to no avail. I am waiting for a repair service to come out but I wait. Forest River will of course cover this but until then. The strange thing is the tank reads 1/3 full. I know they typically don't work when they read FULL when it is empty.

Is there a way from underneath to pull what must be a stuck gate?
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Old 03-24-2013, 09:48 AM   #2
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The gauges are not always right. I had one not open I just worked it back in forth fast and it opened. The other day one of my grays said it was 3/4 full. So to make sure I went out closed it ran water then opened it and saw the water run out. The gauge is just not reading right now tomorrow it might be fine.
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Old 03-24-2013, 10:01 AM   #3
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any possibility it could have ice in it (frozen)?
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Old 03-24-2013, 10:35 AM   #4
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The geo-method will greatly increase the accuracy of the sensors.

Many will say switching to horst probes makes sensor accuracy even better.

Geo-method May help sticking valves as well.

Geo method question

One of many articles on geo method.


Good luck.


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Old 03-24-2013, 10:39 AM   #5
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Quote:
Originally Posted by Patrick45
I have a new Cottage and I find myself unable to open the dank to DUMP. There is resistance when I pull the handle but nothing happens. I have done a hose from top and bottom as well as a snake from both directions to no avail. I am waiting for a repair service to come out but I wait. Forest River will of course cover this but until then. The strange thing is the tank reads 1/3 full. I know they typically don't work when they read FULL when it is empty.

Is there a way from underneath to pull what must be a stuck gate?
How bout a bucket below the vave, then loosen the four bolts holding it in only 1/4 turn at a time and gently try the valve. If you spray WD 40 on the disc direct it may help. I wouldn't go more than 1/2 turn total each bolt. It should free up. Might want to insert a 3' stick through the toilet opening and determine how much is in there for sure. Typicall 1" liquid on stick = about 20%..
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Old 03-24-2013, 10:52 AM   #6
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about all one can

Quote:
Originally Posted by VinceU View Post
How bout a bucket below the vave, then loosen the four bolts holding it in only 1/4 turn at a time and gently try the valve.
after many years installing and repairing valves

VinceU is right on

truly for starters

it is about all one can do at this point in time

hopefully after this
get it working
then retighten and dump till clean
then remove valve gate and inspect
one does not wish to run into the same problem down the road
valve grease recommended before reassemble

Mountainman
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Old 03-24-2013, 10:54 AM   #7
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It is suppose to be 86 here today so I don't think so.

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any possibility it could have ice in it (frozen)?
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Old 03-24-2013, 10:58 AM   #8
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The tank is almost full. I will try to gather the courage to try what you say below.

Quote:
Originally Posted by VinceU View Post
How bout a bucket below the vave, then loosen the four bolts holding it in only 1/4 turn at a time and gently try the valve. If you spray WD 40 on the disc direct it may help. I wouldn't go more than 1/2 turn total each bolt. It should free up. Might want to insert a 3' stick through the toilet opening and determine how much is in there for sure. Typicall 1" liquid on stick = about 20%..
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Old 03-24-2013, 11:07 AM   #9
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Patrick, when Oakman and I bought our second fifth-wheel, we found that the gray and black tank handles were mis-labeled. Do you get any results when pulling the handle marked gray?
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Old 03-24-2013, 11:10 AM   #10
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I use the valve loube in my tank and it has made a big difdference on how the handle pulls out now!
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