Thread Tools Search this Thread Display Modes
Old 09-09-2009, 06:20 PM   #1
1 Rivet Member
1961 24' Tradewind
wayland , Michigan
Join Date: Aug 2008
Posts: 12
Blackwater tank drain

Ok we have a 1961 tradewind with the rear bath,we want to remove the black water tank to repair it the question is how do we remove the 90 degree elbow from the bottom of the tank without breaking it? is it threaded or glued or what it appears to be either aluminum or cast. not sure witch just trying to avoid ruining that tank to keep costs down on the remodel job, any help with this would be great, thanks in advance.

Tad Pole is offline   Reply With Quote
Old 09-11-2009, 08:26 AM   #2
1 Rivet Member
1961 24' Tradewind
wayland , Michigan
Join Date: Aug 2008
Posts: 12
anyone? anyone?

Tad Pole is offline   Reply With Quote
Old 09-11-2009, 09:08 AM   #3
Site Team
Aage's Avatar
1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,169
Images: 25

Can you post a picture of the tank and the elbow you want to remove? It might help to get an answer, but no guarantees...
If it's to be, it's up to me.
Aage is offline   Reply With Quote
Old 09-11-2009, 09:09 AM   #4
Rivet Master
FreshAir's Avatar

1966 24' Tradewind
Placerville , California
Join Date: Apr 2006
Posts: 3,327
Images: 2
Hmmmm, not sure if your's is the same set-up as our '66. I replaced ours 3 years ago and had to cut a PVC elbow sewer pipe that was glued. It was no issue to glue a new elbow in.
Neil and Lynn Holman
FreshAir #12407

Kirk Creek, Big Sur, Ca. coast.

1966 Trade Wind

1971 Buick Centurion convertible
455 cid

1969 Oldsmobile Ninety Eight
455 cid
FreshAir is offline   Reply With Quote
Old 10-15-2009, 02:55 PM   #5
1 Rivet Member
1961 24' Tradewind
wayland , Michigan
Join Date: Aug 2008
Posts: 12
Ok i finially have a pic of this thing,any help would be great.thanks in advance

Hope this helps Thanks again
Tad Pole is offline   Reply With Quote
Old 10-15-2009, 03:02 PM   #6
Site Team
, Minnesota
Join Date: Aug 2003
Posts: 6,465
Images: 59
I'm afraid you have a bigger problem than the elbow. If you can get the elbow off you still need to disconnect the graywater connectors and remove the big ol' valve on the bottom of the tank before you can lift out the tank. And that'll be way harder than the elbow.

Better start unscrewing that aluminum panel so you can look up in there.
markdoane is offline   Reply With Quote
Old 10-15-2009, 04:33 PM   #7
4 Rivet Member
samb's Avatar
1961 22' Safari
Union , Oregon
Join Date: Jan 2007
Posts: 446
Images: 11
The elbow is the same as was on my '61 Safari. It is aluminum. To remove it you must turn it counterclockwise about a quarter of a turn and then it will drop straight down. The problem you may encounter is that it might be severely corroded and the force needed to turn it may damage something else. There is a big brass valve above it that is screwed to the bottom of the black tank with 4 screws and has a couple of grey water lines attached. My suggestion is to put some Liquid Wrench or other corrosion loosener around the top so it will drain down into the inside of the elbow. Tap it with a hammer and use some heat (but not enough to melt aluminum or start a fire) then unscrew it with a pipe wrench. It has/had a rubber gasket to help prevent leaks.
And what markdoane says..........

samb is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Thetford Drain Valve - Blackwater JHBurns100 Waste Systems, Tanks & Totes 15 04-07-2009 09:39 AM
64 GT Blackwater tank 64TrotterAtl Waste Systems, Tanks & Totes 4 09-27-2008 11:48 PM
New Blackwater tank Tom Bray Waste Systems, Tanks & Totes 5 07-10-2008 07:24 AM
Blackwater drain valve problem aluminator34 Waste Systems, Tanks & Totes 4 07-09-2007 11:22 AM
'52 blackwater tank Cruiser Waste Systems, Tanks & Totes 1 09-01-2003 08:28 PM

Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:14 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.