Black water tank leaking! :( Please help! I need ideas!

Jriddle · February 09, 2010, 02:28:42 PM

JB Weld is what I would use. Make sure to scuff it up the clean for the best bond. I have used this on a 6" fan shaft in a babit bearing to keep the plant going when the shaft was badly scared up when a bearing failed it lasted two years till we decided to change it out. the shaft rotated at 1200 RPM max.

John

John316 · February 09, 2010, 02:37:44 PM

Jim,

Sorry, I didn't read that it was installed. Ouch!!! If that is the case, I would agree. JB would probably be the best route. Sounds like us. We installed the freshwater tank, without checking for leaks...lol...bad news.

God bless,

John

Just Dallas · February 09, 2010, 02:39:13 PM

Removed

Melbo · February 09, 2010, 05:47:25 PM

The stuff dallas posted about is REALLY good at sealing cracks and leaks

Put that inside the cap with the hose clamp after you do the jb weld

Then you will have THREE types of repairs at the same spot

Epoxy polyurethane and the rubber cap

Should keep the BLACK WATER safely inside the tank

Melbo

gumpy · February 10, 2010, 04:44:00 AM

Shoot. Dont' mess with all that gooy stuff. Just put it in use, and add more fiber to your diet. Them fibers gotta be good for something!!

desi arnaz · February 10, 2010, 05:23:40 AM

just remember it's the "S###S"if it fails.......

Moderator edit: I know that was marginal, but we are starting to see a trend towards harsher language and are getting complaints. It is the desire of the moderating team that everyone enjoys themselves here and feels comfortable to have any member of their family reading along. So for the sake of those who are uncomfortable with harsh language, we ask everyone to practice some restraint in that regard.

Busted Knuckle · February 10, 2010, 06:42:28 AM

If you like JB Weld, you'll love this stuff!
http://www.marinetex.com/marinetexepoxyputty.html
can be bought at most boat/marine shops and is good!
We used to take it to the demolition derby's and use it to repair derby cars in between races! I've used it to seal cracked blocks, manifolds and even made it put the radiator back together when the hose ripped the nipple out of it! Also used it to stop major radiator leaks by just gobbing it in the area damaged while it was still pouring out because we only had like 15 mins to get ready for the next race!

For best results though it is recommended to properly clean and prep the surface first!

I love JB weld and keep a new package of it on all the buses in the tool box, but in the shop we use Marine Tex and I have it in my personal traveling tool kit too!
FWIW HTH

BK

BG6 · February 10, 2010, 07:32:57 AM

Quote from: Oregonconversion on February 09, 2010, 11:52:09 AM
The closest place I know of that can spin weld is almost 2 hours away in Eugene.

Uh . . .no. The closest place that can spin weld is YOU.

1) Get the new fitting AND a mating cap or plug.

2) Clean off ALL of the old fitting, and make sure you have a flat mating surface for the new one. Any bumps will give you trouble.

3) Drill a hole in the exact center of the cap or plug, and put a bolt through it. Cinch a nut down TIGHT, so that there will be no chance of the bolt spinning in place. Even better is if you have a hole saw, just modify the cap or plug to fit as if it were another saw cup. Attach this to your high-speed power drill. Now you have a spin-weld adapter.

4) Grease the threads of the adapter, and run it into the new fitting, making sure not to get any of the lubricant onto the mating area of the fitting..

5) Start the drill, and once the fitting is spinning at full speed, press it into place and hold it hard enough to make friction but not so hard that it slows it down.

6) You will feel when the plastic softens and starts to weld. Let it run about 10 seconds after you feel it change as much as it's going to, then push firmly.

7) Stop the drill, and hold the fitting firmly in place for at least 30 seconds without moving anything. If you have a helper, they can carefully squirt a little cool water on the weld (careful not to get it into the drill!).

Back the adapter out of the fitting, and flood the weld with cold water until it's cool, then inspect.

boogiethecat · February 10, 2010, 05:56:28 PM

Hey I'm not sure what I'm looking at in your picture... is that a poly tank with an ABS fitting "glued in" to it? If so, the ABS glue will not have stuck to the tank at all (nothing sticks to poly tanks) and you should be able to simply unscrew your plug and put another one in properly, with some good pipe dope instead of abs glue...