Reply
 
Thread Tools Display Modes
Old 10-29-2016, 08:51 PM   #1
Junior Member
 
Join Date: Apr 2013
Posts: 16
black tank flush leaks water

I have a Cardinal 3850, 2014 model and when I apply water pressure to the black tank flush connector, it leaks water in the basement area. Took down the wall next to docking station. Noticed the flush line goes up through the floor near the fuse box/breaker box. Anyway, water is running down the hose where it goes through the floor and then ends up in the basement area. My dealer says there is a check valve in there somewhere and is probably leaking. Doesn't know where it might be. Has anybody had this problem or have a clue where I can find the check valve? Thanks for any help on this!!
__________________

cardinalrancher is offline   Reply With Quote
Old 10-29-2016, 08:58 PM   #2
Senior Member
 
Join Date: Jan 2016
Location: Danville, IL
Posts: 296
It happens on my 36CKTS and was told some leaking was normal. I beg to differ, however, it isn't a big enough issue for me to take it in to get it looked at.
__________________

__________________
2016 Cedar Creek 36CKTS
2013 F-450
emtp82 is offline   Reply With Quote
Old 10-29-2016, 09:48 PM   #3
Left Coast
 
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
Send a message via Yahoo to bob caldwell
It's not normal.....look in bathroom vanity....It's a air admittance / backflow plastic valve....
bob caldwell is offline   Reply With Quote
Old 10-29-2016, 09:50 PM   #4
Canadian Member
 
Join Date: Feb 2012
Location: Eastern GTA, Ontario, Canada
Posts: 4,728
That's fairly common. The previous owner of my TT replaced it with a 90 deg bend and I use this backflow preventer on my dedicated black tank flushing hose.
__________________
2019 Rockwood Signature 8290BS, Reese Revolution pinbox and B&W Patriot 18K hitch
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73, w/ snow plow & camper pkgs.
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)

itat is online now   Reply With Quote
Old 10-29-2016, 10:05 PM   #5
Junior Member
 
Join Date: Apr 2013
Posts: 16
Thanks for the responses everyone!! I have looked in the bathroom vanity, under the shower and around the toilet. Sure would be nice if the builders would have a plumbing diagram.
Thanks again!!
cardinalrancher is offline   Reply With Quote
Old 10-29-2016, 10:08 PM   #6
Canadian Member
 
Join Date: Feb 2012
Location: Eastern GTA, Ontario, Canada
Posts: 4,728
It should be right behind and about a foot above the outside inlet port. It may be in a cabinet or behind a panel.
__________________
2019 Rockwood Signature 8290BS, Reese Revolution pinbox and B&W Patriot 18K hitch
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73, w/ snow plow & camper pkgs.
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)

itat is online now   Reply With Quote
Old 10-29-2016, 11:19 PM   #7
GLCM Warrior
 
Lefty59's Avatar
 
Join Date: Mar 2014
Location: Northern Colorado
Posts: 251
On our Wildcat (which leaked initially too) the vacuum break for the black tank flush was behind the valves for the shower according to the dealer that fixed it. They had to remove the shower faucet to gain access to the valve.

Best of luck!
__________________
2014 Wildcat 312QBX
2014 Ford F350 SD 4X4 CC LB 6.7L PSD
Bob & Debbie, USAF Retired
Lefty59 is offline   Reply With Quote
Old 10-30-2016, 01:06 PM   #8
Member
 
alsimmon11's Avatar
 
Join Date: Apr 2011
Posts: 79
Tank flush leak

Having the same problem with my Sabre 330. Once I get it back from Giant RV after an awning switch problem I will look at that valve. Would have them do it but close to a month for an switch is too much.
alsimmon11 is offline   Reply With Quote
Old 10-30-2016, 01:10 PM   #9
Senior Member
 
Telstar's Avatar
 
Join Date: May 2013
Location: La Mirada, CA
Posts: 468
We have a 2005 Cardinal 36TS LX and I had to replace the sprayer. I found the verticle tube went halfway up the wall behind the shower to where the vacuum breaker is. Then it went back down to the tank. Instead of removing the under belly cover to get to the tank I unscrewed the floor of the storage area which provided full access to the tank area. My problem was a claugged sprayer so I replaced it with the one Camping World sells. It spins and does a much better job. I tested the action of both by connecting them to a garden hose.
__________________
Gary and Donna
2005 Cardinal 33TS-LX
Trail Air pin box
Center Point suspension
2018 Ram Laramie 3500 6'4" box 2WD
Demco AutoSlide 18k
Telstar is offline   Reply With Quote
Old 10-30-2016, 01:19 PM   #10
Senior Member
 
Join Date: Jul 2010
Location: Waynesville
Posts: 13,890
Quote:
Originally Posted by cardinalrancher View Post
I have a Cardinal 3850, 2014 model and when I apply water pressure to the black tank flush connector, it leaks water in the basement area. Took down the wall next to docking station. Noticed the flush line goes up through the floor near the fuse box/breaker box. Anyway, water is running down the hose where it goes through the floor and then ends up in the basement area. My dealer says there is a check valve in there somewhere and is probably leaking. Doesn't know where it might be. Has anybody had this problem or have a clue where I can find the check valve? Thanks for any help on this!!
Follow the water line for the BTF you are looking for this! It is NOT Normal for any Water to leak Inside any RV! Youroo!!
Attached Thumbnails
Click image for larger version

Name:	DSCF2200.jpg
Views:	171
Size:	258.1 KB
ID:	124238  
__________________
youroo is offline   Reply With Quote
Old 10-30-2016, 03:09 PM   #11
Senior Member
 
sfsgm's Avatar
 
Join Date: Feb 2015
Posts: 300
X2. I just shook my head when I read that it's normal for water leakage inside a trailer.
__________________
2016 Nike Take Down Wrestling Shoes
42 ft square Dollamur high school wrestling mat
sfsgm is offline   Reply With Quote
Old 10-30-2016, 04:56 PM   #12
Senior Member
 
Join Date: Jan 2016
Location: Danville, IL
Posts: 296
I guess I should phrase it better, mine leaks at where the hose connects to the flush
__________________
2016 Cedar Creek 36CKTS
2013 F-450
emtp82 is offline   Reply With Quote
Old 10-30-2016, 05:00 PM   #13
Senior Member
 
sgtlm17's Avatar
 
Join Date: Oct 2013
Location: New Jersey
Posts: 1,342
There is a rubber washer where the hose connects. Mine was not seated properly when I got my rig. Just remove three outer screws to remove black rinse hose connection from rig. And it screws right off to get to the washer.
__________________
2016 Forester GTS 2801QSF
2011 Jeep JK Toad
Habitual RV Modifier
sgtlm17 is offline   Reply With Quote
Old 10-30-2016, 06:51 PM   #14
Senior Member
 
Join Date: Jun 2016
Location: Mid Michigan
Posts: 774
Not sure if it is the same but on ours the flush was leaking at the bulkhead connector at the wall of the tank. I ordered a new bulkhead connector and when it arrived was going to replace the connector. I removed the hose where it connected to the bulkhead connector and noticed the line that goes trough the wall of the tank was loose. Resembles a garden hose connection. I turned it about half turn and it tightened. I reconnected the hose to the bulkhead connector. I connected the garder hose and turned it on. No leak. So now I have a spare which I will probably never use.
markb422 is offline   Reply With Quote
Old 11-06-2016, 08:37 PM   #15
Junior Member
 
Join Date: Apr 2013
Posts: 16
Thanks everyone for the responses!! Since I have posted this thread, a fellow camper with a 3850 told me he thought the check valve was next to the tank itself. The only access was from the under belly. If that is the case, I cannot understand why the tank flush hose is routed up through the floor. With the wall down behind my docking station, I can see water running back down the hose where it goes through the floor. It appears to go through the floor somewhere around the shower or vanity. If this check valve was/is above the floor, I would think there would be water visible from the living area. This problem has me baffled.
cardinalrancher is offline   Reply With Quote
Old 11-06-2016, 09:18 PM   #16
Senior Member
 
VinceU's Avatar
 
Join Date: Dec 2011
Posts: 3,567
To act as a vacuum breaker it must be located about 36" above the tank inlet. The vac breaker is then installed about knee level above the coach floor level in a hollow wall or cab, maybe with a false wall. The leak or drool can fall straight down through the pipe penetrations.
VinceU is offline   Reply With Quote
Old 11-06-2016, 09:41 PM   #17
Senior Member
 
GreenImp's Avatar
 
Join Date: Jul 2013
Location: Oregon
Posts: 678
Send a message via MSN to GreenImp
Another vote for "Mine leaked when new"! Like many others, my leak was simply a loose fitting at the vacuum breaker. It was difficult to access due the small hole you have to reach through (behind the shower valve).
__________________
'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2013 Rockwood 8289WS w/Diamond pkg
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)
GreenImp is offline   Reply With Quote
Old 11-06-2016, 09:42 PM   #18
Member
 
Join Date: Jan 2012
Posts: 32
Mine was leaking in the wall. I bypassed the vacuum breaker. Look under the trailer where the connection for the black tank sprayer goes through the skirt. The water line goes up into the trailer and comes back down in the same area then goes under the trailer to the tank. Connect the line from the spray connection directly to the one that goes to the tank, bypassing the lines that go up to the inside of the trailer. This will eliminate the leak and the sprayer will still work.
wvcampers is offline   Reply With Quote
Old 11-06-2016, 09:43 PM   #19
Left Coast
 
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
Send a message via Yahoo to bob caldwell
Did away with it and about 12' of extra hose.....installed a brass backflow valve for a house
bob caldwell is offline   Reply With Quote
Old 11-26-2016, 09:50 PM   #20
Member
 
Join Date: Jun 2016
Location: Paradise, Ca.
Posts: 31
I have not been on the forum for quite a while, our 2017 Cardinal 3250 RLSB has the same issue, initially the water leaked from behind the heater vent, the dealer fixed it, however water still leaks and drips down the inside of the skirting. Twice it has leaked into the bay compartment. Our dealer said they ran the back flush for 45 minutes and could not duplicate. Thank you all for you postings, I now have something to work with on getting the leak repaired by the dealer.
__________________

1010 is offline   Reply With Quote
Reply

Tags
black, black tank, black tank flush, leak, tank, water

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:17 AM.


×