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Old 09-11-2010, 01:26 PM   #1
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Cast iron clean out


HELP!!! Cast iron waste down to basement goes through floor where there is a a Y with a cap it has a square on to for a wrench..this cap has many cuts around the edge where someone has tryed to open it with a chisel.. I don't want to break the pipe I just want to remove the cap. Would penetrating oil work if I used it once a week for a month then tryed.
Please advise.

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Old 09-11-2010, 02:33 PM   #2
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Originally Posted by COLDIRON View Post
HELP!!! Cast iron waste down to basement goes through floor where there is a a Y with a cap it has a square on to for a wrench..this cap has many cuts around the edge where someone has tryed to open it with a chisel.. I don't want to break the pipe I just want to remove the cap. Would penetrating oil work if I used it once a week for a month then tryed.
Please advise.

You can try the oil.. What's the cap made out of.. I have just broken out the cap and install new 1

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Old 09-11-2010, 03:17 PM   #3
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Cast iron clean out


CAST IRON, if I break it out won't the pieces get caught in the waste line and cause problems??
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Old 09-11-2010, 03:25 PM   #4
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Cast iron clean out


If it's taken apart, can you still use the drain (ie a toilet up above)? Beats me. If not.... then how much trouble would you be in if the system is not back online for a couple days? If this scene is possible, and would be a BAD THING, then if it were me, I'd let the plumber do it.
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Old 09-11-2010, 03:38 PM   #5
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the marks are from someone trying to turn it with a chisel. The fact that the cap is still there means it'll probably turn again. The caps are almost always brass, so there won't be rust in between. The brass is softer than the CI, so it'll break/cut out without damaging the cast. In all the years I've been breaking them out, I've only broken one cast pipe. Get a cold chisel and a 2lb sledge, and make it obey
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Old 09-11-2010, 04:18 PM   #6
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do what The Man said cut it out with chisel cut between threads and fitting it will pop out replace with brass or plastic
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Old 09-11-2010, 07:17 PM   #7
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Don't do what the other posts say, that is a CAST IRON clean out, trying to beat it out will probably break the pipe!!

The only way to get them out is to use something like a dremel and cut pieces out until its loose enought to remove the remainder, there's very little chance that penetrating oil will work.
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Old 09-11-2010, 07:35 PM   #8
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Don't do what the other posts say, that is a CAST IRON clean out, trying to beat it out will probably break the pipe!!

The only way to get them out is to use something like a dremel and cut pieces out until its loose enought to remove the remainder, there's very little chance that penetrating oil will work.
Have you ever done it? No? Hmm.... I have NEVER broken a CI cleanout adapter or wye that it was attached to, and I've broken out hundreds of em. I worked for a company that wanted cameras everywhere, regardless of whether they were having problems so we could try to sell more work. Didn't like it, but I like being employed. I carried a 2lb sledge and chisel into every house I worked on, and only ever broke 2 rotted pipes.
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Old 09-11-2010, 08:44 PM   #9
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Never seen an actual cast iron cap or plug. Most are brass or steel. I agree the chisel was used to remove the cap/plug. Angling the chisel so it is in the direction to remove the cap, and then striking it with a hammer is not likely to break the pipe. When you put it back in, use Nevr-seez on the threads.
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Old 09-11-2010, 09:08 PM   #10
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I've seen a couple of steel plugs used on COs, but every one I've seen instead of a square to grab with a wrench it had 4 round posts to put a wrench on. It also sounded much different when hit with a hammer. I had to cut out the fitting and replace the CO
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Old 09-12-2010, 09:09 AM   #11
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You can try the oil.. What's the cap made out of.. I have just broken out the cap and install new 1
Looks like steel if it was cast it probably be broke by now.
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Old 09-12-2010, 10:15 AM   #12
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CAST IRON, if I break it out won't the pieces get caught in the waste line and cause problems??
If it's cast iron then it most likely has some lead around the outside edges. Just cast center. Try a bigger pipe wrench and/or a cheater bar. Try tightening it up first, then loosen.

If it's brass, you can just punch a hole through it with a cold chisel and a sledge then pry it out with a pair of channel locks.

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