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Thread: Bath Tub Drain Removal

  1. #1
    DIY Junior Member Carob's Avatar
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    Default Bath Tub Drain Removal

    Hello.

    I'm hoping someone might have an idea or two for me on this subject.

    I have two bath tubs that have drains that need to be replaced. The problem is that I can't get them out. They are in such bad shape that the crossmembers are all busted off that the tub drain removal tool is supposed to use to unscrew and remove.

    The suggestion that was given to me by Home Depot and Ace Hardware is to hammer a screwdriver (or something) into the side of the drain to use for leverage. I can't even manage to do that. (I can barely put a dent into it.) I thought about trying to drill a hole into the side of it but I'm scared to do that because I don't want to go through and damage the threads preventing putting a new one in.

    Does anyone have any advice on how I can get these drains out and still be able to screw in new one?

    Thanks very much!!!

  2. #2
    Plumber RioHyde's Avatar
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    You could use a reciprocating saw with a bimetal blade. Stick the blade into the drain and cut a wedge out of the drain collar then pry it out. The trick here is to not cut the threads in the drain shoe which would present an entirely new set of problems. If you're not comfortable doing that you can also use a hacksaw blade instead of the recip. saw. It will take alot longer and you'll expend more energy, but sometimes "slow and steady wins the race".

  3. #3
    DIY Junior Member Carob's Avatar
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    If I were to do that and "pry" it out wouldn't that damage the threads that the new drain would need to screw onto?

  4. #4
    Plumber RioHyde's Avatar
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    not if you cut a wedge out of the drain collar itself by sticking the blade into the drain AND keep the blade away from the female threads of the drain shoe.

  5. #5
    DIY Junior Member Carob's Avatar
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    Pardon my ignorance but I guess I'm confused.

    But what is the purpose of cutting the wedge? For being able to pull the drain straight out or for giving a lip of some sort to put a screwdriver against to bang on to hopefully loosen it up? If it's the latter, okay I can see that. If it's the former I don't get it because how would it lift out if the threads from both pieces are holding it in?

  6. #6
    Plumber RioHyde's Avatar
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    you'd be cutting the wedge out of the drain collar where the threads are (vertical area that penetrates the bathtub drain hole). The purpose would be to loosen the male threads of the drain collar from the female threads of the drain shoe. After that, you should be able to get a screwdriver or chisel in there to pry the male threads out of the female threads of the drain shoe.

  7. #7
    DIY Junior Member Carob's Avatar
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    How bad is it if some of this metal falls down into the pipe? I would think it would be impossible to prevent all of the material from dropping when trying to saw with one hand and hold the piece with the other.

  8. #8
    Forum Admin, Expert Plumber Terry's Avatar
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    That's what I like to do too, Though it helps when you've watched someone first.





    http://www.azpartsmaster.com/Product...__PAS4500.aspx



    http://www.azpartsmaster.com/Product...__PAS4500.aspx
    Last edited by Terry; 04-13-2011 at 09:59 AM.

  9. #9
    Plumber RioHyde's Avatar
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    True, Terry. True. See one, do one, teach one. lol

  10. #10
    DIY Senior Member Mike Swearingen's Avatar
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    I've always removed tub drains in this situation with a hacksaw blade, hammer and chisel (or flathead screwdriver), and a hair dryer.
    Use a glove or cloth to hold a hacksaw blade and cut a small V-notch in the top inner edge of the drain above the threads.
    Heat the drain with a hairdryer on "high heat" to soften the old plumber's putty under the drain lip.
    Use the chisel or screwdriver in the notch to tap the drain around counter-clockwise to unscrew it. Won't harm the threads.
    Works for me everytime.
    Good Luck!
    Mike

  11. #11
    Forum Admin, Expert Plumber Terry's Avatar
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    Yeah, well, okay!

    That sounds pretty good too Mike!
    I can try that next time.

    If you still have the cross in the drain, you can use the standard tool.

    Last edited by Terry; 04-13-2011 at 12:27 AM.

  12. #12
    DIY Junior Member raygunclan's Avatar
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    now, i am a self (and husband) professed remodel moron, but what about that spray that is supposed to help loosen things up? i read in another thread about removing a shower arm (which i'll be darned if i can do!) that there is a spray (maybe like a heavy duty wd40) that you spray in to loosen the threads. would this work in this situation? i'm still at the shower arm, but i'm working my way down to the faucet handles, which are stuck too!, to the shower drain (please don't let me have this same problem, the only saw we have is a chain saw to remove all the trees we lost in the hurricanes last year, and i'm not sure this is what i will need to use!).
    would that spray be the ticket, and if so, would there be ANY excuse not to
    ALWAYS have a can of this on hand?
    sincerely,
    using metal nail file instead of allen wrench
    (c:

  13. #13
    DIY Junior Member Carob's Avatar
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    Well, after cutting the notch large enough to put the head of a screwdriver in I started to pound away. After several minutes of banging away it seemed to move about 1/16". At that point I realised that the collar was splitting rather badly and stopped. The split is along the top of the collar and goes for about 1 1/4" around it. Now I don't know what to do.

  14. #14
    DIY Junior Member Carob's Avatar
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    Can anyone explain how the "dumbell wrench" is supposed to be used when there are no crossmembers of the old drain left for the tool to grab onto? Supposedly this dumbell wrench is for drains that just won't come out, but, the end that is supposed to be used for tubs (the smaller end from what I can tell) just slides right in and spins around.
    Last edited by Terry; 06-16-2008 at 09:10 AM.

  15. #15
    DIY Junior Member Don's Avatar
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    The use of a RotoZip with a small metal cutting wheel would give you the surgical precision to do this task even next to the human spine...but then..if you sent a picture , we may all know more about your situation..ain't that right fellas..Don

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