Black Tank Crack

Depends on where the crack is.

When mine cracked I had it looked at and it could be repaired but it was cracked at a seam and went part way around drain hole.

It would have cost me about, unable to get on the ground and get back up, $400.
So I had one made, square this time. When I had it installed I had straps to support all the tanks. No straps were installed originally which allowed the tanks to bounce, thus the crack.

It cost me just over $500. Would have cost over $1500 and take 4 weeks instead of 2 weeks. I picked it up and delivered.

tinstartrvlr wrote:
Managed to drill a hole in my black tank once and found some 2part JBWeld type stuff for plastic/abs etc at HD that can be used even underwater. It hardens nicely and stopped the leak completely. Then covered it with some gorilla tape just for fun.

Worked for me. Had crack where pipe joined tank. Used JB Weld in the red and black tube and added several layers at a campground in Indiana. Be prepared to work quickly with small amounts. Sets up fast.Held for the remaining 4 years I owned the rig.. Never had any luck with the plastic putty. Does not work on polyethylene which is what the other tanks were made of. If the tank is black it is almost always ABS. Sanded the area first. DO not get the quick setting. Sets up too fast.

Managed to drill a hole in my black tank once and found some 2part JBWeld type stuff for plastic/abs etc at HD that can be used even underwater. It hardens nicely and stopped the leak completely. Then covered it with some gorilla tape just for fun.

My Jayco black tank cracked. I used black ABS cement purchased at lowes and some fiberglass cloth to seal and reinforce the crack. The only place I could find black ABS cement was Lancaster, PA.

If it's ABS just buy some flat ABS stock or even ground up pipe and use common plumbing cement to fix it. Repair will be strong as new.

Have it plastic welded.