Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 10-22-2021, 11:20 AM   #1
Junior Member
 
Join Date: Feb 2019
Posts: 13
Disconnecting Black Tank Drain from Tank

I cannot figure out how to remove the drain plubing from the black tank. It appears that the tank has a molded 3 inch pipe that is attached to the abs plumbing. A metal band was around part of it, but it is lossened and nothing really moves. Some type of black putty appears to hold the abs pipe to the tank drain pipe. I guess I could cut it, but then I loose 2 inches or so from the black tank pipe drain. Is there any other way? I tried to attach pictures. Hopefully it worked (very odd way to add pictures to message)

Click image for larger version

Name:	PXL_20211022_155340722.jpg
Views:	50
Size:	231.1 KB
ID:	264783

Click image for larger version

Name:	PXL_20211022_155311970.jpg
Views:	41
Size:	265.3 KB
ID:	264784

Click image for larger version

Name:	PXL_20211022_155205603.jpg
Views:	39
Size:	290.3 KB
ID:	264785

Click image for larger version

Name:	PXL_20211022_155159445.jpg
Views:	40
Size:	255.1 KB
ID:	264786

Click image for larger version

Name:	PXL_20211022_155106993.jpg
Views:	39
Size:	261.1 KB
ID:	264787

Click image for larger version

Name:	PXL_20211022_155055984.jpg
Views:	40
Size:	237.4 KB
ID:	264788
roberthug is offline   Reply With Quote
Old 10-22-2021, 11:39 AM   #2
Member
 
Join Date: Oct 2020
Location: FL
Posts: 71
Why may I ask are wanting to do this?
JimBath is offline   Reply With Quote
Old 10-22-2021, 11:46 AM   #3
Junior Member
 
Join Date: Feb 2019
Posts: 13
The pipe has a slow leak.
roberthug is offline   Reply With Quote
Old 10-22-2021, 11:50 AM   #4
Member
 
Join Date: Oct 2020
Location: FL
Posts: 71
It appears from the pic that the pipe connection have been glued together so I suspect you will have to cut out a piece and install a new piece??
JimBath is offline   Reply With Quote
Old 10-22-2021, 12:03 PM   #5
Senior Member
 
pjones1969's Avatar
 
Join Date: Aug 2012
Location: North Texas
Posts: 196
cut it in the center of the coupling, then get the 2 halves of the coupling off by slicing them vertically and peeling them off, careful not to cut into the pipe inside of them, sand the pipe, a little rough is ok, then use a banded coupling like below to re-attach the two ends of the pipe

https://www.missionrubber.com/produc...ght-couplings/
__________________
2011 Puma Unleashed 27SBU - SOLD
2013 Sabre 32bhok-6 - SOLD
2012 Ford F250 6.2 - SOLD
2017 Heartland Cyclone 3800
2016 Ford F350 6.7 DRW
B&W Companion
pjones1969 is offline   Reply With Quote
Old 10-22-2021, 05:35 PM   #6
Senior Member
 
Join Date: Sep 2009
Posts: 177
Where exactly is the pipe leaking at? Not sure if this will help but I had a black tank fitting leaking where it goes into the tank. I used this plumbers repair tape to seal it with. Lasted for 7 years that I had the trailer. Here is the link. Good luck.


https://www.homedepot.com/p/Nashua-T...3082/100206050
shadows4 is offline   Reply With Quote
Old 10-22-2021, 07:10 PM   #7
Member
 
Join Date: Jun 2020
Location: Bakersfield, CA
Posts: 45
Gluing ABS for Repair

I've had luck in the past with small leaks in ABS where I was able to scrape down into the leak and then use ABS cement to melt the pastic together and eliminate the leak. Might be worth a try.

Good luck with your repair and please let us know what worked for you.
__________________

Paul & Sherida Hodel and Coco Chanel, the Chocolate Cockapoo and the family's prized possession!
New TT: 2021 Rockwood Ultra Lite 2608BS, 570 watts of solar + 300 AH of Battle Borne lithium batteries.
TV: 2008 Chevy Silverado 1500
GrandpaPaul is offline   Reply With Quote
Old 10-23-2021, 07:21 AM   #8
Junior Member
 
Join Date: Feb 2019
Posts: 13
The 90 degree pipe is leaking someplace. It is behind it so I could not narrow it any more than that. I tried a bunch of JB weld and cannot seem to get it where it is leaking. I have new valves (the combo grey and black in one piece like is installed from manufacturer) and plan to connect the grey where the old valve connected. I just need to figure out how to get the 90 degree pipe off what appears to be the molded in drain of the black tank. I thought maybe there was away without cutting it, but it appear not. I have no idea why they even have the metal band on. It does nothing that I could tell.....
roberthug is offline   Reply With Quote
Old 10-23-2021, 08:26 AM   #9
Senior Member
 
satdog01's Avatar
 
Join Date: Jul 2013
Location: Franklin, TN
Posts: 732
Rob, I had a leak on inlet to my grey tank and after unsuccessfully getting it fixed carried rv to service center after Goshen rally in August. They had a gallon bucket of a black material that was pretty thick. Thinner than roofing tar. They applied it to the joint and let it dry and after overnight applied a second coat. Fixed issue. Not sure what material was but it fixed issue being that the pvc pipe does not glue well to an abs tank. A call to service may reveal hat the stuff is. Good luck, would try and stay away from tank removal.
__________________
2020 Georgetown 31L, Safe T steering, Sumo springs, Onan Geny
2015 GMC Canyon 4X4 TOAD w/Blue Ox tow plates, InvisiBrake
Pepper 🌶 PomChi rescue 446 nights as camping buddy
Days camped in FR, 2011-12 = 77, 13-14 = 98, 15 = 52
16 = 77, 17 = 81, 18 = 44, 19 = 83, 20= 45, 21 = 76
Retired :
satdog01 is offline   Reply With Quote
Old 10-23-2021, 08:54 AM   #10
Member
 
Join Date: May 2015
Location: KY
Posts: 50
That putty stuff is what was called elephant snot or something similar. I had the same issue and used a hair dryer to heat the pipe and soften the putty. It will then wiggle free. A heat gun would do the same thing.
FishRich is offline   Reply With Quote
Old 10-23-2021, 02:22 PM   #11
Junior Member
 
Join Date: Feb 2019
Posts: 13
The hair dryer did it. Amazingly easy once you know what to do. Now off to get the supplies to put it back together. Thanks to everyone!
roberthug is offline   Reply With Quote
Old 10-23-2021, 10:26 PM   #12
Junior Member
 
Join Date: Apr 2020
Location: alpine ca.
Posts: 1
disconnecting black tank drain from tank

Quote:
Originally Posted by satdog01 View Post
Rob, I had a leak on inlet to my grey tank and after unsuccessfully getting it fixed carried rv to service center after Goshen rally in August. They had a gallon bucket of a black material that was pretty thick. Thinner than roofing tar. They applied it to the joint and let it dry and after overnight applied a second coat. Fixed issue. Not sure what material was but it fixed issue being that the pvc pipe does not glue well to an abs tank. A call to service may reveal hat the stuff is. Good luck, would try and stay away from tank removal.
It looks like you have a polyethelene tank with abs drain pipe. You cant glue poly pipe. Use a fernco rubber coupling for that installation. They con be bought with a different o.d. on each side. Ferguson supply sells them.Measure with a pie tape.
alpinejim is offline   Reply With Quote
Old 10-24-2021, 02:55 PM   #13
Senior Member
 
Join Date: Mar 2014
Posts: 175
pics

Hopefully, you have this fixed already but here is a picture of what I took out of my RV to fix a big crack in the outlet. It was a pain to do. I did get the pipes apart by using a heat gun to soften the glue. The flex seal in white slowed the leak but did not stop it.

tid=264867&stc=1&d=1635104796[/IMG]
Attached Thumbnails
Click image for larger version

Name:	20180707_153143.jpg
Views:	16
Size:	286.4 KB
ID:	264867  
__________________
TSman
2014 Sunseeker 2500 TS Chevy
TSman is offline   Reply With Quote
Reply

Tags
black, black tank, drain, tank

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.



All times are GMT -5. The time now is 08:34 PM.