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09-17-2015, 04:26 AM
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#1
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Junior Member
Join Date: Aug 2015
Location: Duluth
Posts: 14
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Pin Hole Leak Black Water Tank
Found a small pin hole leak on the curved section of my black water tank. What are some of best options to repair. Called local dealer and he recommended a patch that was activated by UV light. I was thinking along the lines of a JB Weld plastic gas tank repair. Thanks
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09-17-2015, 06:10 AM
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#2
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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Eternabond roof tape... clean the area then place the tape over it. Many forums recommend this
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
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09-18-2015, 08:41 AM
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#3
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Senior Member
Join Date: May 2012
Location: Pearland, TX
Posts: 514
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Also recommend eternabond.
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09-18-2015, 08:45 AM
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#4
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Senior Member
Join Date: May 2015
Location: Campbell Hall
Posts: 2,835
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If the hole is small enough, drill and tap to 1/4-20 and install a pan-head nylon screw with some sealant on the threads.
It'll give you 10 years.
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TV 2003 F-350 "Montblanc" - Housebroken chore truck
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09-18-2015, 02:12 PM
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#5
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Senior Member
Join Date: Apr 2015
Location: Elephant Butte, NM
Posts: 1,219
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Quote:
Originally Posted by mike837go
If the hole is small enough, drill and tap to 1/4-20 and install a pan-head nylon screw with some sealant on the threads.
It'll give you 10 years.
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or a self tap metal w/sealant
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09-18-2015, 02:17 PM
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#6
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Senior Member
Join Date: May 2015
Location: Campbell Hall
Posts: 2,835
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Quote:
Originally Posted by Edd505
or a self tap metal w/sealant
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IF you can find genuine stainless. I wouldn't trust anything from Lowest or Home Despot.
In my opinion, Black Water is best dealt with ONCE! Do the job properly.
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TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!
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09-18-2015, 02:48 PM
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#7
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Senior Member
Join Date: May 2013
Location: SE Wisconsin
Posts: 3,431
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JB Waterweld. I've seen this stuff plug a small hole in a car radiator and last for years. I'd be inclined to try this first before drilling holes and making a bigger hole.
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Chuck
2013 Jayco Jayfeather X20 E (sold)
2016 Chevy Silverado LTZ 2 Z71 Crew Cab (sold, and dearly missed)
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09-21-2015, 12:27 PM
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#8
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Junior Member
Join Date: Aug 2015
Location: Duluth
Posts: 14
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Hole
I first thought about taping a new hole but the hole I have now, is small, only a small drop forms every couple of minutes. Did not want to make a bigger one. I went with the JB Weld and so far so good. Waiting to see what happens with the cold weather Thanks
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09-21-2015, 01:38 PM
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#9
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,859
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Covering the repair with Eternabond still may help it hold up over time.
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09-21-2015, 05:22 PM
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#10
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Senior Member
Join Date: Oct 2014
Location: Surprise, Arizona
Posts: 464
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I've used "Mighty Sealer" flexible rubber coating sealant. https://www.mightysealer.com/?mid=2830260. Costco sells at at times. I've had good results. That's my 2 cents......
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09-21-2015, 07:17 PM
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#11
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Senior Member
Join Date: Apr 2013
Posts: 517
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Quote:
Originally Posted by loadmaster
I first thought about tapping a new hole but the hole I have now, is small, only a small drop forms every couple of minutes. Did not want to make a bigger one. I went with the JB Weld and so far so good. Waiting to see what happens with the cold weather Thanks
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The good news is that under normal service the tank isn't under pressure and there isn't enough depth to create much head pressure. A pinhole in poly tank material isn't likely to continue to fracture/travel so drilling stress stop holes probably wasn't necessary. A long(er) crack or a hard plastic tank would be a different situation.
I'll go with your choice on this. I've seen and had great success with JB Weld. Off the top of my head, JB Weld products have repaired a stripped out drain plug on an outboard motor gear case, an engine coolant system punctured aluminum casting (think pressure and heat), numerous other cracked aluminum parts, and many plastic parts. I've used JB Weld products to copy and remake actuator arms and similar parts.
FWIW. As long as the surfaces were properly prepped, your repair should be fine.
vic
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