Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > MOC on M.A.R.S. > Maintenance
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 08-12-2019, 09:26 AM   #1
Wingrider214
New Member
 
Join Date: Nov 2018
Location: Colorado Springs
Posts: 2
M.O.C. #23075
Black water tank flush

We have a 2012 3400RL that we bought used just over a year ago. When I connect a hose to the flush port for the black tank, water will not flow into the tank. Seems like there is an obstruction somewhere. I have filled the tank and added cleaner several times hoping to clear anything at the port of the tank. I am assuming there is some type of check valve on this line. I am looking for options to fix this problem without opening a hole in the underbelly.
Wingrider214 is offline   Reply With Quote
Old 08-12-2019, 10:09 AM   #2
carl n susan
Site Team
 
carl n susan's Avatar
 
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 3,821
M.O.C. #4831
There is an anti-siphon valve in the flush line behind the shower wall. It has failed, not the first time this has happened. There are posts of how to cut the wall in the pantry to access the valve. The other solution is the find the lines behind the wall in the pass through compartment, cut them, and rejoin them with shark bite (or similar) fittings to bypass the failed valve. A Search will uncover a number of posts on both solutions.
__________________
Carl (n Susan) Youngren
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

carl n susan is offline   Reply With Quote
Old 08-12-2019, 12:26 PM   #3
BuilderBob
Montana Master
 
BuilderBob's Avatar
 
Join Date: Sep 2017
Location: Tacoma
Posts: 1,483
M.O.C. #20475
Carl may be correct on the problem of your black tank flush it is common problem. But we had a friend that had the valve in the tank plug up and he had to pull it out and clean it out!
__________________
Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
Happy Trails
BuilderBob is offline   Reply With Quote
Old 08-12-2019, 08:58 PM   #4
Wingrider214
New Member
 
Join Date: Nov 2018
Location: Colorado Springs
Posts: 2
M.O.C. #23075
Thank you
Wingrider214 is offline   Reply With Quote
Reply

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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 10:42 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.