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Old 07-31-2009, 10:11 PM   #1
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cant get 3" cleanout out of 4" cast iron pipe


I drilled around the lead that was used to pack the clean out opening in but I cant get it out. Im afraid to hammer it out. Would heating around the 4" pipe help? Any suggestions? Thanks

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Old 08-01-2009, 06:00 AM   #2
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cant get 3" cleanout out of 4" cast iron pipe


If you are talking about the access nut, they are often rusted/corroded in place. It is often necessary to destroy them to get them out. They will usually break before the iron hub. Heat might work, but it can also melt the lead.

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Old 08-01-2009, 06:20 AM   #3
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cant get 3" cleanout out of 4" cast iron pipe


just bill is right. i would use a small headed chisel and be methodical or you could do more damage. behind that lead is a packing we called yoakum. the lead should only be about one inch thick. thanks, buddy builder
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Old 08-01-2009, 09:05 AM   #4
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cant get 3" cleanout out of 4" cast iron pipe


If you are not talking about the cover, but an actual 3 to 4" fitting that is leaded in, there is oakum under the lead that has been pounded into the joint. try wiggling the fitting in a circular motion to break it all loose (lead and oakum).
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Old 08-01-2009, 09:27 AM   #5
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cant get 3" cleanout out of 4" cast iron pipe


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Originally Posted by majakdragon View Post
If you are not talking about the cover, but an actual 3 to 4" fitting that is leaded in, there is oakum under the lead that has been pounded into the joint. try wiggling the fitting in a circular motion to break it all loose (lead and oakum).
Thats exactly what I am trying to do. I have to connect a drainage line for a macerating toilet unit. The only access point that I have is the cleanout. The plumbing inspector told me that I would have to tie into the cleanout by getting the 3" threaded pipe out of the 4" pipe and retrofitting it with a new clean out and the added drain line.

I drilled around the lead and got all of it out, at least I think I did. Now whats left is a brown, soil like substance. I got most of that out too. I then tried to pry the clean out but it would not budge. I tried everything I could think of to physically remove it. I thought about heating up the pipe but decided against it until I got some replies from the site.
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Old 08-01-2009, 10:04 AM   #6
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cant get 3" cleanout out of 4" cast iron pipe


Sounds like you did everything properly. It may just be "junk" holding the fitting in. Try hitting the fitting with a deadblow hammer or use a piece of wood between the fitting and the hammer. This should prevent breaking the fitting off and making removal even harder.
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Old 08-01-2009, 03:17 PM   #7
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cant get 3" cleanout out of 4" cast iron pipe


Not sure what a dead blow hammer is. Sounds like a weapon from one of those role playing games. I'll try the wood block. Do you think a rubber mallet would be better than a hammer?
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Old 08-01-2009, 07:13 PM   #8
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cant get 3" cleanout out of 4" cast iron pipe


Deadblow hammer has semi-hard ends so you don't break anything. Many have lead pellets in them for weight. I just don't want to see you break the fitting, You only want to break it loose. A rubber mallet "may" work but the wood is the next best thing.
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Old 08-01-2009, 08:04 PM   #9
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cant get 3" cleanout out of 4" cast iron pipe


I spent almost 2 hours trying to get this fitting loose today. Im not sure what else to do. Ive finally hit something hard around it that just won't budge. I think its the start of the tappered end of the 4 in iron pipe. I used the mallet and the hammer/wood block and nothing has changed. Im at my wits end!!!
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Old 08-01-2009, 10:29 PM   #10
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post a pic. if u can
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Old 08-02-2009, 12:55 PM   #11
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I will as soon as I get a chance.
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Old 08-02-2009, 02:03 PM   #12
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cant get 3" cleanout out of 4" cast iron pipe


AS A LAST RESORT YOU COULD ALWAYS CALL A PLUMBER TO GET IT OUT AND MAKE UP YOUR NEW CAST IRON TIE IN !

THEN COMPLETE THE REST OF THE WORK YOUR SELF !
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Old 08-02-2009, 11:25 PM   #13
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cant get 3" cleanout out of 4" cast iron pipe


I was able to get the 3" pipe out!!!!!!!

I spent another 2 hours working at it with the drill and the hammer and it finally gave in. I was in total shock. I hit the pipe with the hammer and it moved! It actually moved!!! After that I kept on hitting it on opposite sides and then I grabbed the pipe with my bare hand and pulled it right out. I swear that it was one of the most satisfying experiences I have ever had. It was a true DIY nirvana moment.
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Old 08-03-2009, 07:44 AM   #14
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cant get 3" cleanout out of 4" cast iron pipe


Congratulations.
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Old 08-03-2009, 08:30 AM   #15
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cant get 3" cleanout out of 4" cast iron pipe


Thanks.

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