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Old 10-13-2012, 12:13 AM   #31
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Location: La La Land
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A common size on a medium-duty-truck lug-nut "star wrench" is 1-1/16". It's what I used today to remove my 1999 water heater's anode rod. Since the anode was at "zero material", I suspect it had never-before been serviced. The tank had lots of chunks of white crud, which mostly washed out with a wand made for that purpose.

I got out a 3/4" pipe tap, and with the aid of a 13/16" twelve-point socket, extension, and drive was able to "chase" the threads in the tank. Didn't really cut the threads any deeper, but got rid of most of the rust in them.

A few layers of thin teflon tape on the new anode rod's threads and it went back into the tank with ease. It didn't require a lot of torque to effectively seal against the pressure.

If you're having problems removing an old rod, I highly recommend finding a cross-star lug wrench that has a 1-1/16" size. You WILL get it out.


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Old 10-13-2012, 06:35 AM   #32
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Location: South Eastern PA
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Originally Posted by Dave_Monica View Post
You never put antifreeze in the WH. You shut the valves on the supply and discharge lines and open the valve on the bypass between the inlet/outlet.

Ditto! On the back of the water heater is a pipe arrangement with valves in it.
Look for something like:

These are set up for use. To bypass turn all valves 90 degrees clockwise.
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Old 10-13-2012, 06:59 AM   #33
Join Date: Aug 2011
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Thanks for all the replies. I used a breaker bar and with a little force it came off without any damage. After the water is drained should I leave the rod off through the winter or put it back in?
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Old 10-13-2012, 09:32 AM   #34
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In my opinion i would clean up any rusty stuff the best you can, Teflon tape it, and put it back in for the winter. I think you run a bigger chance of rust building up if you leave it out.

I also disagree with anyone that says removing it after every trip will damage the threads. Those are pretty heavy duty thread cuts. Almost impossible to cross thread if you pay attention. I have been removing mine after every trip since I had a pop up in 1992. For the last 6 years since my kid has been racing we use it every weekend from march to November. That's approximately 220 trips in the motorhome and it still works like brand new plus I have no rust build up and I never need a breaker bar.

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