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Old 05-17-2015, 10:52 AM   #1
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Suburban water heater problem

I have always had problems screwing the anode into the water heater. The female fitting is now rusted to the point that I have not been able to get the anode started. I do not want to put a new water heater in because of some rust. Any ideas? I thought I could find a 3/4 inch thread chaster but to no avail yet. Probably take it to an RV repair place but I would rather fix it myself if possible.
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Old 05-17-2015, 11:23 AM   #2
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Pipe thread taps aren't that hard to find:

6 Piece Pipe Taps

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 05-17-2015, 01:17 PM   #3
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Suburban water heater problem

I use a thread tap and it works perfectly. Just remember to oil the tap. I got it at a local tool place.
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Old 05-17-2015, 01:54 PM   #4
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High speed taps that large can be quite pricey but thanks for mentioning Harbor Freight. I do not normally buy from them. They did have a set that will fit the bill for 60 bucks shipped to me. That is probably less than a minimum charge at an RV shop.
Thanks again
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Old 05-17-2015, 07:03 PM   #5
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You can get a 3/4" pipe tap at your local sears tool department, Also most auto parts stores will have one, like NAPA, Car Quest, etc. You might even be able to rent one from Lowe's or Home Depot, if you don't want to buy it. A thread file will work also if you can get one, but it will be harder to use.
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Old 05-26-2015, 02:03 AM   #6
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You are turning the anode the correct direction aren't you?
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Old 05-26-2015, 05:53 AM   #7
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If you still have the old one try using it to chase the threads with some oil. If it threads in easily you might want to double check your new fitting for defects.
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Old 05-26-2015, 09:19 AM   #8
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The problem with chasing pipe threads is they are tapered. If you run the tap too deep, the threads will be oversize and the anode rod won't get tight and may leak.
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