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10-22-2017, 01:31 PM
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#1
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Member
Winnebago Owners Club
Join Date: Jul 2017
Location: north texas
Posts: 78
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help ,can't remove the water heater drain plug
as in title,,have been soaking regularly in penetrating oil,,but cant break loose. afraid of damaging tank. has anyone applied heat to the pipe plug
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Bill Gallivan
98 itasca 30wq
Kawasaki klr on the back!
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10-22-2017, 01:33 PM
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#2
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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What brand WH? I hope it isn't one that needs a nylon plug and someone used a steel/iron one. If that's the case then you may end up replacing the whole WH.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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10-22-2017, 02:07 PM
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#3
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Member
Winnebago Owners Club
Join Date: Jul 2017
Location: north texas
Posts: 78
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I have every book in the world except one on the water heater
model gh6 8e
__________________
Bill Gallivan
98 itasca 30wq
Kawasaki klr on the back!
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10-22-2017, 02:22 PM
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#4
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Well, by looking at the picture I can see that you have the wrong plug. That's a common pipe plug and you probably have a Suburban WH. Suburban WH's REQUIRE a nylon plug, using a steel/iron one causes electrolysis and the plug welds itself in. Usually the whole fitting comes out of the tank and you end up replacing the whole unit.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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10-22-2017, 02:31 PM
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#5
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Senior Member
Join Date: Jul 2014
Posts: 35,317
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Have you tried a square socket, extension and breaker bar ?
Try some steady twisting. If it don't move, turn on the water heater, until its hot, and try again.
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10-22-2017, 02:32 PM
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#6
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Senior Member
Ford Super Duty Owner
Join Date: Jan 2011
Location: Lowell, Arkansas
Posts: 7,297
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If what Mr D says is correct (and he knows a thing or two about this stuff) You might try an air impact. I didn't say to get a 3/4" BIG MAMA one just a 3/8 D or a 1/2" D with the force turned down to the least impact.
The idea is to impact the frozen plug to maybe break/shake the corrosion around the threads. Start with low air pressure and do it in both directions gently for just a few seconds. What have you got to lose since you may have to replace the entire tank anyway.
I've done this before with some success so it's worth a try!!!
Yes you can get 8-point sockets for a square head fitting both in 1/2" and 3/8" drive.
__________________
TeJay Auto Instructor/4-yrs USAF/ Liz: RN/ WBGO 2014 Vista 30T/ F-53/CHF/5-Star/Koni * Bella & Izzy * Golden /Cocker mix/ Louie The Cat* All Retired
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10-22-2017, 02:41 PM
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#7
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Registered User
Join Date: Oct 2011
Posts: 2,183
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Last resort
Mix muriatic acid and transmission fluid 50-50
Keep soaking the threads
Hope this keeps you from buying and installing a new WH.
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10-22-2017, 02:48 PM
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#8
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Member
Winnebago Owners Club
Join Date: Jul 2017
Location: north texas
Posts: 78
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what about antifreeze,,?
and not draining?
i have tried to remove it with the heater on,, no avail,,
contemplating drilling 21/64 and tapping 1/8 27 ipt.
__________________
Bill Gallivan
98 itasca 30wq
Kawasaki klr on the back!
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10-22-2017, 02:49 PM
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#9
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Member
Winnebago Owners Club
Join Date: Jul 2017
Location: north texas
Posts: 78
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will try low pressure impact
__________________
Bill Gallivan
98 itasca 30wq
Kawasaki klr on the back!
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10-22-2017, 02:49 PM
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#10
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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Quote:
Originally Posted by Mr_D
Well, by looking at the picture I can see that you have the wrong plug. That's a common pipe plug and you probably have a Suburban WH. Suburban WH's REQUIRE a nylon plug, using a steel/iron one causes electrolysis and the plug welds itself in. Usually the whole fitting comes out of the tank and you end up replacing the whole unit.
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Suburban heaters use an Anode Rod. The Atwood heater uses a Plastic Plug, no Anode.
Either way, it's the wrong plug. You need to beg, borrow, steal or most likely Buy a 1/2" Drive 8 Point Socket. From the looks, you will require a 1/2" X 1/2" drive 8 point.
Then when you get the plug out you should use a 1/2" NPT Thread Tap to clean up the threads before replacing the new Anode Rod or Plastic Plug depending on which heater this is.
My guess looking at the photo it's an Atwood thus requiring a Plastic 1/2" NPT Plug available at most RV Parts stores.
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2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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10-22-2017, 02:53 PM
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#11
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Senior Member
Join Date: Aug 2017
Posts: 2,091
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I have the same water heater. It should have a nylon plug. Try rocking the plug by tightening then loosening it. An impact would help . I wouldn't use a torch to apply heat as the insulation on the inside may catch fire. The last option is to drill out the plug and retap it for a smaller 3/8 pipe plug.
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1993 Tiffin Allegro Bay 32'
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10-22-2017, 03:05 PM
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#12
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Senior Member
Join Date: Aug 2015
Posts: 6,909
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That's an Atwood water heater. It has an aluminum tank. You should always use an Atwood nylon plug in an Atwood heater.
I have found it helpful to remove the sheet-metal chimney. It's held on with two screws, one upper-right and one lower-left. Removing it allows you to get a decent-sized crescent wrench on the plug.
If you do remove the chimney, remember to reinstall the ground wire under the upper screw.
If you do succeed in removing the steel plug, use a brass plug to dress the threads in the drain outlet before trying to insert a nylon drain plug.
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Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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10-22-2017, 03:19 PM
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#13
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Senior Member
Monaco Owners Club
Join Date: Sep 2014
Posts: 4,569
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I would either leave it and run pink stuff through it or try and drill it out
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1996 Tioga Class C
2007 Monaco Diplomat 40 PDQ
TOAD 2012 Cadillac SRX 4
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10-22-2017, 04:01 PM
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#14
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Member
Winnebago Owners Club
Join Date: Jul 2017
Location: north texas
Posts: 78
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Thanks for all the ideas, I will post after I get an 8-point 9/16 socket, thank you
__________________
Bill Gallivan
98 itasca 30wq
Kawasaki klr on the back!
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