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Broken pipe

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Gene

05-15-2003 05:43:10




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There have been many ideas about removing broken bolts, etc. but my situation is a little different. In a cast aluminum hydraullic pump a fitting - 3/8 pipe - broke off. I can see the threads in the hole. The broken pipe is steel. Since the housing in aluminum I am afraid to heat it up - or should I not be concerned? I tried an EZ out and all it did was compress the threads against the sides. I don't want to put to much pressure on the cast aluminum.
I don't really want to drill as the shavings would go into the pump. Any ideas I could use on this? Thanks. Gene

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Gene

05-16-2003 19:31:07




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 Re: broken pipe in reply to Gene, 05-15-2003 05:43:10  
I went to my local hardware store today and purchased a "internal pipe wrench". Once I ground enough of the broken pipe stem to insert the wrench the broken stem came out in 30 seconds. All the threads are intact. I never heard of this tool before, but it was a real lifesaver. Makes me wonder about other tools I never heard of, but should have..... Thanks to all of you who gave me advice. This is a great source for problem solving. Gene

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VaTom

05-17-2003 06:00:03




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 Re: Re: broken pipe in reply to Gene, 05-16-2003 19:31:07  
Hey Gene,

Glad it worked! That's what it's all about, sharing what you know to make everybody's life a little easier. This IS a great list.



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wdTom

05-15-2003 17:56:00




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 Re: broken pipe in reply to Gene, 05-15-2003 05:43:10  
Have used DHunter's method with success, but be carefull to stop just when you see the threads in the saw kerf.



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VaTom

05-15-2003 06:35:36




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 Re: broken pipe in reply to Gene, 05-15-2003 05:43:10  
Hi Gene,

Having fun yet? I've successfully used DHunter's method but almost never have I had to resort to it.

First, I'd try an inside pipe wrench. They are immensely better than an EZ out as they grab the inside of the broken stem over the whole length to give better rotational force. I got my set from Harbor Freight many years ago. Still working and saved me a lot of aggravation on these occasions.

Good luck.

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T_Bone

05-15-2003 18:40:14




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 Re: Re: broken pipe in reply to VaTom, 05-15-2003 06:35:36  
Hi Tom,

When my father-in-law passed away I got his tools as sons wanted noting to do with them, plumber.

In amoungest the tools was a inside pipe wrench. Took me awhile to figure out just what it was for. LOL

Works great tho!

T_Bone



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DHunter n NOLa

05-15-2003 06:04:09




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 Re: broken pipe in reply to Gene, 05-15-2003 05:43:10  
Gene, About the only success that I have had to remove a dutchman (that's what it's called) is to take a hacksaw blade and cut the steel pipe on the inside being careful to stop just as you expose the aluminum threads. Then take a punch, sharp chisle or something that you can tap on the edge of the cut steel pipe at one side of the cut. By carefully tapping the edge of the cut you can start the steel pipe to curl inwards. At some point you should be able to take a narrow nosed pliers and unscrew the dutchman from the aluminum pump housing. You may have to cut the hacksaw down for it to fit inside the 3/8" pipe. If you slightly damage the threads in the pump housing you can use teflon tape or something like permatex on the threads for a good seal. Good luck!

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