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Old 07-01-2013, 02:11 PM   #1
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Grey water comes out when I take the hose cap off...normal?

It happens every time I use the AS. To be more specific, I usually get a little grey water that comes out when I take the cap off...where you hook up your dump hose... Most of the time it's just a little like a half cup of fluid, yesterday at the dump station a little more than a cup full poured out, when it stopped in a second or two then I hooked up my dump hose.. I'm wondering if this is normal for a little fluid to come out before you hook up to dump? Thanks...
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Old 07-01-2013, 02:14 PM   #2
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You might have a slow leek in you grey water valve.
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Old 07-01-2013, 02:32 PM   #3
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... I'm wondering if this is normal for a little fluid to come out before you hook up to dump? Thanks...
It's not normal... But as rubber ages, it looses its ability to make a good seal. Be happy it's not the BW that's seeping, yet. Your profile indicates your trailer is pressing 30 years old, so maybe it's expected.
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Old 07-01-2013, 03:02 PM   #4
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Go to Amazon or Camping World and buy a Valterra twist-on dump valve. Manufacturer: Valterra Products Llc
Mfg Part #: T58
It costs about $25.


"Just twist a valve onto your leaky, broken sewer valve.
Eliminates messy valve replacement and expensive service. Fits and accepts standard bayonet fittings. Operates like regular valve and rotates to most convenient position."
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Old 07-01-2013, 04:31 PM   #5
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You can put a little lubricating oil down the drains (Grey and black) once in awhile to help lubricate the rubber seals and retard them from drying out.
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Old 07-01-2013, 04:41 PM   #6
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...and if all else fails, there will be the inevitable need to replace that blade valve. It is not difficult to do and the parts are readily available. You DEFINITELY want to make sure your tank is completely, totally, absolutely empty. (Important for the gray tank....MANDATORY for the black...!)
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Old 07-01-2013, 05:05 PM   #7
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Depending on the configuration of where the dump is vs the valve you, might be able to use a little spray pam to get some lubricant onto the rubber seals. Rubber has a tendency to dry out over 30 years.
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Old 07-01-2013, 05:07 PM   #8
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Go to Amazon or Camping World and buy a Valterra twist-on dump valve. Manufacturer: Valterra Products Llc
Mfg Part #: T58
It costs about $25.

"Just twist a valve onto your leaky, broken sewer valve.
Eliminates messy valve replacement and expensive service. Fits and accepts standard bayonet fittings. Operates like regular valve and rotates to most convenient position."
I did the same thing on my 69 for a couple of years. The grey water used to be dumped straight into the ground. I guess back in the 1960s they did not mind that. It's the cheapest short term fix.
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Old 07-01-2013, 05:48 PM   #9
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I don't get a half cup but I do get a few drops - maybe a teaspoon at max...I have to imagine a few drops/ounces is normal if for non other reason than some amount just doesn't make it all the way out and as you drive it around, it finds it way closer to the cap.

I'm hoping that's not wishful thinking! 8-o
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Old 07-01-2013, 06:15 PM   #10
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I carry a small bucket. Just in case there is a bit of anything in the pipes that didn't completely drain out.
We just finished painting the living room in the house. The ceiling paint came in a 2 gallon container. It works great and fits under the sewer pipe outlet.
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Old 07-02-2013, 03:21 PM   #11
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All great information...thanks...I really like that twist on valve thingy...have another trip soon, will watch to see how much comes out...may have to go shopping at Amazon! Thanks everyone!
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Old 09-24-2014, 04:00 PM   #12
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This is happening a little on my 2008 Classic 25fb from both tanks. Looks like a pain to replace the valves. I'll try a little oil down the drains but with oil lighter than water won't it float on any residue water in the valve area? I've got a couple of gallons in my empty black tank right now. I guess I need to completely empty the tank to try this procedure. Could cold temperatures cause this issue. I put RV antifreeze down the toilet when I winterize.

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Old 09-24-2014, 04:16 PM   #13
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I think that it's also possible that the valve in the grey tank could become difficult to close fully due to sediment gathering in it over the years. I know mine is very tough to close.

I haven't tried to clean it out, so I can't say if it wil be tough to do or not. I also think the black tank valve is beginning to have the same problem.
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Old 09-24-2014, 07:02 PM   #14
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You can buy a bottle of seal lube at the RV store of your choice.

Perry
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