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07-10-2012, 06:11 AM
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#1
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Member
Join Date: May 2012
Location: Mooresville, North Carolina
Posts: 61
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Grey tank overflow??
I just purchased a 2013 Sprinter 331. On the maiden voyage, we noticed that the grey tank, when full and ready to dump, ( i let it fill to flush my hose after draining the black tank), when i went to dump the grey tank, water was running out of a hole in the center of the underbelly cover. Its a hole that looks like it had been punched into it right in the dead center of the camper, in the "swag" of the underbelly cover. I had noticed the hole when i got it home and was inspecting the underside and wondered why a hole would be there. I have never heard of a grey tank overflow. I purposely let it fill to full again to see, and it drained out the hole again. I am wondering what I'll see when i let the dealer drop the underbelly cover to inspect, or is this a new "overflow feature" that Keystone has put in? Nothing in the manuals mentions it.
Any ideas or thoughts before the Saturday trip to CW?
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07-10-2012, 06:49 AM
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#2
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Senior Member
Join Date: Nov 2011
Location: SoCal
Posts: 1,739
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Tanks should never “overflow” to the outside. They should back up into your tub (or toilet). When my grey tank is full, the tub backs up.
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-Scott, DW, DG, DB, and DD
2011 Passport 2590BH
2009 Ford F150 SuperCrew F X4 5.4L w/Max Tow
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07-10-2012, 06:52 AM
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#3
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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It sounds to me as if either the inlet or vent is not attached properly to the tank. An overflow as you mention would violate waste water dumping laws and is highly unlikely. JM2˘, Hank
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Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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07-31-2012, 11:37 AM
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#4
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Junior Member
Join Date: Jul 2012
Location: Leeds
Posts: 2
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The grey water tank on our Outback has been leaking for a while. It has been at the dealer for the last three weeks. They finally got to it and Keystone is replacing the tank under warranty. I wonder how many more Keystone owners have this leaking problem? It sounds like a bad tank design.
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Pops250
30' 2011 Keystone Outback fifth wheel
2010 F250 Super Duty
H&S Mini-Maxx, S&B Air Box, Sinister EGR delete, 4" turbo back EPF/CAT delete
50 gallon TransferFlow inbed fuel tank
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07-31-2012, 02:07 PM
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#5
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Senior Member
Join Date: Nov 2011
Location: SoCal
Posts: 1,739
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What part of the tank was it leaking from?
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-Scott, DW, DG, DB, and DD
2011 Passport 2590BH
2009 Ford F150 SuperCrew F X4 5.4L w/Max Tow
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07-31-2012, 05:57 PM
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#6
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Permanent User Ban
Join Date: Mar 2012
Location: Bartlesville, Oklahoma
Posts: 1,124
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Quote:
Originally Posted by hankpage
It sounds to me as if either the inlet or vent is not attached properly to the tank. An overflow as you mention would violate waste water dumping laws and is highly unlikely. JM2˘, Hank
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Tend to agree with this.
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07-31-2012, 07:02 PM
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#7
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Senior Member
Join Date: Sep 2011
Location: Northville NY in the Adirondacks
Posts: 2,128
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Gray (or black) holding tanks are not supposed to overflow. If they do, it is a sign of a serious problem. They are fairly simple devices however, so it is almost always a disconnected or broken vent pipe connection, or the inlet is partially disconnected or broken, or the tank itself is ruptured.
It is also possible that the drain connection is damaged. However, if that were the case, you'd have a constant leak of gray water until the tank is completely empty. Add any gray water and it would run right out of the leak.
If you know the tank is completely empty, it is possible to figure out how high up on the tank the leak is located. If it holds any small amount of liquid without leaking, you can rule out the drain.
If it leaks when only partially filled, it may be a rupture or leaking sensor.
If you have to fill the tank completely full before it leaks, that would suggest that either the inlet or the vent is the culprit.
It is also possible that the drain line is leaking.
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'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
Amateur Radio: KD2IAT (146.520) GMRS: WQPG808 (462.675 TPL 141.3)
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08-01-2012, 04:55 AM
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#8
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Member
Join Date: May 2012
Location: Mooresville, North Carolina
Posts: 61
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After a trip to my CW dealer, it was found that the grey tank is cracked near the top of the tank. Not sure why the factory would have "poked" a hole in the underbelly to let the grey water drain if they had not known the tank had a problem. Now, my 3 week old camper can only be used with sewer hook ups.... waiting for the 6 to 8 week delivery on the new tank. This new 2013 Sprinter has had more than its share of bugs this early.
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09-18-2012, 10:35 AM
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#9
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Junior Member
Join Date: Sep 2012
Location: Texas
Posts: 5
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I think i have the same problem
We just got our 2001 Keystone Laredo home and took it out this weekend. After returning home, I noticed that the bottom of the back of the trailer is hanging down and all wet. When I got up there to fix it, there is some kind of tank and a hose poked out of a "hole" on the underbelly. There is a tank connected to this hose, and the insulation is all wet. Called the dealer and they told me to just get some self-tapping screws and put it back up. lol Don't think so! Now, I'm hoping no critters crawl up there before the dealer can look at it at my expense. Anyone know if that is the gray water tank below the couch in the 25RL in back? We are new at this and bought this used from Holiday World.
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09-18-2012, 11:05 AM
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#10
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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Quote:
Originally Posted by Seamore43
We just got our 2001 Keystone Laredo home and took it out this weekend. After returning home, I noticed that the bottom of the back of the trailer is hanging down and all wet. When I got up there to fix it, there is some kind of tank and a hose poked out of a "hole" on the underbelly. There is a tank connected to this hose, and the insulation is all wet. Called the dealer and they told me to just get some self-tapping screws and put it back up. lol Don't think so! Now, I'm hoping no critters crawl up there before the dealer can look at it at my expense. Anyone know if that is the gray water tank below the couch in the 25RL in back? We are new at this and bought this used from Holiday World.
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If it has a hose with a cap coming out of it it is your freshwater holding tank. Remove the cap to drain the tank. Your problem may be just a loose clamp or fitting. Travel safely, Hank
__________________
Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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09-19-2012, 09:45 AM
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#11
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Junior Member
Join Date: Sep 2012
Location: Texas
Posts: 5
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Hi Hank, abd yes, I did drain it yesterday. I'm going to fill it up again today and see if I can see where it is leaking, then drain it quickly. Thanks for the information!
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10-08-2012, 11:36 AM
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#12
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Member
Join Date: Sep 2012
Location: Georgia
Posts: 41
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I just found this problem yesterday on 2-Nu-Us 2007 Passport. When I came down my driveway with the camper nose down, I noticed water came out from under the camper. Come to find out, there is water in the underbelly. Now I have to get under there and cut an opening, so I can find out where the water is coming from
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Eric & Debbie
2003 Ford F-150
2007 Keystone Passport 280bh
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