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Old 02-20-2015, 09:04 AM   #15
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Drill hole at end of any crack.

Next get some MEK as it is the solvent for this stuff.

Get the tank positioned so crack is closed and with a syrenge (get one at pet supply ) you feed mek into the crack and it melts together.

Silicon the holes.

Visit a plastic supply and get some sheet and ser if they have better glue and glue the sheet over the cracks to add additional support.

Last is figure out why it cracked as it may be poor support or stupid design and make that better.

Tony & Lori
1989 Country Coach Savannah SE
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Old 12-07-2015, 12:04 PM   #16
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Winnebago Owners Club
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Did the OP fix this?

Chuck, Donna, and Shroeter the Yorkie.
2002 Winnebago 36 DL
United States Navy Seabees 1970/1974
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Old 12-07-2015, 07:43 PM   #17
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Vintage RV Owners Club
Fleetwood Owners Club
Join Date: Mar 2013
Location: c above
Posts: 5,147
If you have a pipe that leaks, Try this
Have you thought about the spray can repair, advertised on TV for repairing? I bought a 3m brand but haven't had a need to try it.
I also bought a roll of tape that repairs leaky pipes. I used it on my gray water drain line and it hasn't leaked yet that I did 4 years ago. Its just a little bit wider than a roll of electrical tape and its Black I can't remember the brand name.
Welcome and I hope you get it repaired.
1982 Pace Arrow 30ft.
KarKaddy SS, Toad: 1999 Deville Concours
Lilly and Rubie Our 4 legged Kids & Tim & Joe
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Old 12-07-2015, 10:44 PM   #18
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scotch makes some.

Folks call it snake skin but not sure of exact name.

It is self sealing Gass line sealing tape.
Tony & Lori
1989 Country Coach Savannah SE
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Old 12-08-2015, 06:49 AM   #19
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Location: Sierra Vista AZ for now...
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I took out my old grey water tank and had a new tank custom made with my old tanks dimensions. The new custom made tank cost about $100 more than a new generic tank but it's much thicker and fit perfectly. I would've fixed the old tank but they way it'd cracked made repairing it too dicey to expect the repair to last.
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Old 12-08-2015, 09:05 PM   #20
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Try RV Tanks Camper, Motorhome, Travel Trailer
1988 34' Executive Industries - Executive Prestige
5.9 Cummins, Allison AT542
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Old 12-09-2015, 07:46 PM   #21
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RVhopeful here

Hea thanks everyone for all the good advice I learned a lot of different ways for a tank repair. I took the tank out and it was a mess beyond repair so I found a used tank close in size I had to move the toilet tank hole and the vent hole after drilling the new holes out I cut two patches out of my old tank and bought a plastic repair epoxy from napa auto I glued the patches in place with two inches over lap around the holes then for extra precaution I put small screws about three inches apart all around the patched hole Its working good and don't expect any problems especially with my repairs being on the top of the tank. I also ripped out all of the old copper water lines and ran all new pcv water lines. My next project is to replace the ceiling vent in the bathroom and replace the paneling that got ruined by the leak and after that I can start looking for a kitchen table or build my own that will fold down to a bed. Thats were I'm at on 73 Brave, I recently bought a 84 winni bago chieftain so now I'm working on both its keeps me busy and out of trouble and its fun. Take care RV'S stay safe enjoy life on the road.

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replacement, replace, tank

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