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10-17-2017, 04:48 AM
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#1
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Junior Member
Join Date: Oct 2017
Location: Glencoe
Posts: 13
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2018 Cougar 30RLS sink drain???
My kitchen sink won't drain, I have checked the Ptrap and it's clean. RV is only 3 weeks old so highly unlikely I have a clog elsewhere but possible. However I was told I do not have the optional second grey tank yet I have noticed the level of it on the control panel shows full???? Don't know if that's a faulty reading or maybe there is a second tank that wasn't plumbed out. I have one blank tank valve handle and one grey tank valve handle, I do not have a second handle unless it's hidden somewhere??????
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10-17-2017, 04:58 AM
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#2
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Yeah... you got two 30 gallon grey tanks.. There is one under the island.. Go lay down under the trailer and look up.. there will be a handle where the 1 1/2 pipe joins the 3" drain from the toilet and bath...
Mine is just in front of the tires and about 12" back from the discharge fitting..
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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10-17-2017, 05:57 AM
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#3
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Senior Member
Join Date: Sep 2011
Location: Northville NY in the Adirondacks
Posts: 2,128
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Quote:
Originally Posted by Jpegg01
My kitchen sink won't drain, I have checked the Ptrap and it's clean. RV is only 3 weeks old so highly unlikely I have a clog elsewhere but possible. However I was told I do not have the optional second grey tank yet I have noticed the level of it on the control panel shows full???? Don't know if that's a faulty reading or maybe there is a second tank that wasn't plumbed out. I have one blank tank valve handle and one grey tank valve handle, I do not have a second handle unless it's hidden somewhere??????
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Basically, what Javi said.
"I was told" without saying who doesn't validate the information to us and it should not to you. If your dealer told you that on the PDI, it's wrong, wrong, wrong.
Check the specs on your trailer online or in the brochure if you have one. It says 2 gray tanks.
Look at the exposed black ABS drain pipes under the trailer. If it looks at all similar to this, you've got a second gray tank. (Click on the pic to view it in a larger format.)
The smaller 1.5" pipe to the right of the dump fitting is the drain line for the kitchen sink. It angles up into the bottom of the trailer directly below the sink. The handle visible in the pic is the dump valve for the sink in the extended position. When it is pushed up and closed, it's only a few inches from the underbelly.
For reference, the larger 3" pipe going off to the left is fed by the black tank and the gray tank from the bathroom.
It's possible that the handle has gone missing. There will still be hole in that location where it was. A replacement shaft and/or handle can be purchased online or at any RV dealer's parts counter.
__________________
'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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10-18-2017, 08:07 AM
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#4
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Junior Member
Join Date: Oct 2017
Location: Punta Gorda
Posts: 5
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Gray Tanks
I have a 30 RLS (fifth wheel) and it only has 1 gray tank
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10-18-2017, 09:20 AM
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#5
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,332
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Spec's say one tank, 60 gallons. This could one big one or two average tanks. But none of this says why just his kitchen sink won't drain. He maintains that the p-trap is not clogged so he must have had it off? I don't believe I understand all that I think I know.
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Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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10-18-2017, 09:35 AM
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#6
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Quote:
Originally Posted by notanlines
Spec's say one tank, 60 gallons. This could one big one or two average tanks. But none of this says why just his kitchen sink won't drain. He maintains that the p-trap is none clogged so he must have had it off? I don't believe I understand all that I think I know.
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Mine says 76 gallon grey and 38 gallon black tank... but trust me... I have two 38 gallon grey tanks... and a 38 gallon Black tank
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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10-18-2017, 09:46 AM
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#7
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,692
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As was mentioned spec says 60 gal. gray capacity. That would be a very large tank, much larger than most on a trailer that size if that is indeed the case. Mine has approx. the same gray capacity and most specs, when pulled, say one gray tank; not so. I have 2. The black and bathroom pull handles are next to each other, more or less. The 2nd gray tank, for the galley, is hidden up by the frame in front of the tires. Smaller handle. The 2 large handles are black, the 3rd is smaller and silver. Much easier to open and close but harder to find. I know where it is and it still takes me a bit of time waving my arm around under the trailer before I find it. Crawl under the trailer and look around, I bet you find one.
Edit: this post is almost 1 1/2 days old so OP may have found the issue??
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10-18-2017, 01:06 PM
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#8
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,997
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The OP might have resolved his problem, hopefully he has. It would be appropriate (and kind) if he did resolve it, to post the fix. If he hasn't, then by "logical deduction" here's how it goes (the way I see it and by most who have responded)...
The specs for the trailer indicate 30 gal black and 60 gal gray. Traditionally, Keystone installs two 30 gallon tanks, one for the bath and one for the galley when they list the specs that way. I have not seen a Keystone trailer with any single tank (other than fresh water) that is larger than 48 gallons.
Now, the LOGICAL CONCLUSION to the problem and solution are:
There are no problems with the bathroom (OP stated he dumped the black and gray tank) and those drains work. The galley sink won't drain. So, from all appearances, as most have responded, the galley gray 30 gallon tank is full. We have had this happen to a number of new owners in the past and it's well documented on the forum.
The fix: FIND THE GRAY GALLEY TANK DRAIN. It's under the trailer, either mounted in the frame rail or in a small slit in the coroplast. In either case, there is a 3rd dump valve handle that the OP has not yet found (or if he has and not told us he found it, hopefully he will update the thread).
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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10-22-2017, 01:22 PM
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#9
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Finally got a chance to run by the trailer and snap a photo of the galley drain valve..
Javi
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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10-22-2017, 03:04 PM
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#10
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,692
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Quote:
Originally Posted by Javi
Finally got a chance to run by the trailer and snap a photo of the galley drain valve..
Javi
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Yikes! I thought mine was inconvenient!! Don't know that I could wave my arm around in the dark enough to find that one!!
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10-22-2017, 05:45 PM
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#11
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Senior Member
Join Date: Sep 2011
Location: Northville NY in the Adirondacks
Posts: 2,128
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2018 Cougar 30RLS sink drain???
Quote:
Originally Posted by Javi
Finally got a chance to run by the trailer and snap a photo of the galley drain valve..
Javi
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Am I viewing those pics correctly? If I am, the valve handle is behind the drain if you are standing on the side of the trailer? Wow! I thought mine was bad.
__________________
'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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10-22-2017, 08:04 PM
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#12
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Junior Member
Join Date: Oct 2017
Location: Port aransas
Posts: 1
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Quote:
Originally Posted by Jpegg01
My kitchen sink won't drain, I have checked the Ptrap and it's clean. RV is only 3 weeks old so highly unlikely I have a clog elsewhere but possible. However I was told I do not have the optional second grey tank yet I have noticed the level of it on the control panel shows full???? Don't know if that's a faulty reading or maybe there is a second tank that wasn't plumbed out. I have one blank tank valve handle and one grey tank valve handle, I do not have a second handle unless it's hidden somewhere??????
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My kitchen sink would not drain then I couldn't close the drain valve.looked in side when the dumb *** cut the drain holes I guess thought it was funny to just put the wood plugs in the drain
Sent from my Pixel XL using Tapatalk
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10-23-2017, 01:56 AM
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#13
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Yep... it is behind the 3" and yes it is pointing AWAY from you while you are on your knees trying to reach around the drain... The handle is 40" deep and again the direction is away from you... Just another reason I love sites with FULL HOOKUPS...
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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10-23-2017, 05:14 AM
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#14
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Member
Join Date: Oct 2013
Location: Festus Missouri
Posts: 82
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Just curious, how far from the edge of the trailer is the handle? I wonder sometimes if the RV designers have ever been in camping.
__________________
Limit 4
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10-23-2017, 06:25 AM
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#15
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Quote:
Originally Posted by limit4
Just curious, how far from the edge of the trailer is the handle? I wonder sometimes if the RV designers have ever been in camping.
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40"
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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11-09-2017, 07:49 AM
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#16
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Junior Member
Join Date: Aug 2012
Location: Salem
Posts: 4
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My 2017 Cougar 303rls has a gallery tank for the kitchen sink only. The shower and bath room sink dump into the gray tank.
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04-06-2018, 01:04 PM
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#17
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Junior Member
Join Date: Apr 2018
Location: Dixon
Posts: 1
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Two grey tanks in 2018 Cougar 29RES
Thank you for the posts concerning two grey tanks...without that info I would still be scratching my head. My kitchen sink would not drain. Specs on trailer show 1 grey tank. Yes, there are two! Second handle is under trailer in front of driver's side front tire. Learning more each day💕
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04-08-2018, 05:14 PM
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#18
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Junior Member
Join Date: Dec 2017
Location: Oak Harbor
Posts: 1
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I have an 2018 30RLS the sink gray tank handle is aft of main outlet coming out through the frame about afoot or so back
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11-22-2018, 05:42 PM
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#19
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Member
Join Date: Nov 2018
Location: vancouver canada
Posts: 35
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Galley tank
I have a 2018 cougar 30rls and it has a second grey tank for the kitchen sink. It drains out the main 3 inch pipe, but is a 1 1/2 inch pipe like the picture. But the lever is under the skirt on the slide out near the control panel.
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