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Thread: How to remove bathroom sink drain collar?

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    DIY Junior Member Capt. David's Avatar
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    Default How to remove bathroom sink drain collar?

    Terry,
    I am replacing my bathroom sink fixture, and drain assembly. I've managed to get the faucet out, but am stuck removing the drain collar assembly. It's all loose, but the collar (above), and pipe (below) seem to be one piece, and will not fit through hole in either direction. Please help with suggestions. Thank you.

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    Master Plumber Redwood's Avatar
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    Hold the assembly below and unscrew the collar (flange)
    Last edited by Redwood; 07-29-2008 at 07:46 AM.

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    Moderator & Master Plumber hj's Avatar
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    Default flange

    It would have been a lot easier to do before you loosened it from the sink. Now you have to hold the collar somehow while you unscrew it from the drain fitting.

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    DIY Junior Member Capt. David's Avatar
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    Default Thank you

    Yes, it was a matter of removing the collar, which was so mucked-up, I didn't know it was threaded. Mission accomplished.
    Anon,
    Capt. David

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    DIY Junior Member kenfused's Avatar
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    Hello,
    is there an easy way to unscrew the sink drain collar without needing to loosen anything from below?

    If not, If I loosen the main flange (terminology?) under the sink drain from below, how do I get a grip on the sink drain collar on top to unscrew it?

    Thanks!

  6. #6
    Moderator & Master Plumber hj's Avatar
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    usually, before you loosen the bottom nut, if you hold it as if you were going to TIGHTEN it, and "UNSCREW" the drain body, the collar will come loose.

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    DIY Junior Member kenfused's Avatar
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    Thanks.
    I'm a total newbie.
    What do I need to hold? hold the drain collar and unscrew from below on the drain body?

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    Moderator & Master Plumber hj's Avatar
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    You hold the large nut, and then "unscrew" the drain body out of it. The diffenence in thread pitch between the large nut and the collar, creates "pressure" which clamps the collar so the drain loosens from it.

  9. #9
    DIY Junior Member kenfused's Avatar
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    Thanks for all the help.
    I assume I also have to release the part that connects the pop up drain (moves it up and down) before trying to twist anything!

    Then I (hopefully) remove the old one, put the new one down with a layer of plumbers putty then retighten.

    If it doesn't come loose, any other tricks to loosen the collar?

  10. #10
    Moderator & Master Plumber hj's Avatar
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    I have NEVER had one NOT come loose if it is done exactly the way I describe it. Once collar comes loose, you can release your grip on the big nut and unscrew it the rest of the way from the collar. The alternative is a hacksaw cutting through the drain and rubber washer right below the sink.

  11. #11
    DIY Junior Member kenfused's Avatar
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    Looking at this diAgram do I have to disconnect the tailpipe too?
    Sorry for All the questions. I am doing this at a friends house so I am not looking at the pipe at the moment.
    Also do I use pipe compound to reattach the pipes?
    Last edited by Terry; 07-17-2011 at 01:18 AM.

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    Forum Admin, Expert Plumber Terry's Avatar
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    Normally it takes two pairs of pliers. One to hold the flange and one for the drain body.

  13. #13
    DIY Junior Member kenfused's Avatar
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    How do you use pliers to hold the flange when it is in the sink?
    Doesn't seem like there is much to hold on to

  14. #14
    Plumber jimbo's Avatar
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    First you have to loosen the big nut underneath...then the flange will rise an inch or so above where it contacts the sink. You have to be careful to not scratch the sinke, and if it is stubborn, that is why I and others often resort to just cutting below the sink bottom. Chances are you are not planning to reuse any of this anyway??

  15. #15
    DIY Junior Member kenfused's Avatar
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    actually I was hoping to only replace the collar (as it has become scratched and rusty).
    I should be able to reuse the pop up drain part and replace the gasket/nut/washer right? (these parts are under the sink right?) only the collar (and putty) is above?

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