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| The sink
strainer assembly connects the sink to the drain line.
There's a bead of putty that goes under the lip of the
strainer, and it's a very common place for leaks to
occur. Your goal is to take the assembly apart, put in
fresh putty, and tighten everything back up. Remember:
there are quite a few nuts, washers, and gaskets to
this assembly. Keep them in their
correct order when you reassemble everything. Old washers
and gaskets should be replaced – take the old ones with
you when you shop for replacements. |
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 Unscrew the
slip nuts from both ends of the tailpiece with slip joint
pliers. Disconnect and remove the tailpiece from the
strainer body and the trap. |
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 Remove the
big locknut with a spud wrench. You may need to get things
going by tapping on the lugs with a hammer. Unscrew the
locknut, then remove the strainer assembly. |
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 Remove the
old putty from the drain opening by scraping it off with a
putty knife. If you're using the old strainer body, clean
off the old putty from under the flange. You should also
replace the old gaskets and washers. |
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 Apply a bead
of plumber's putty to the lip of the drain opening, making
sure there aren't any gaps. Press the strainer body into
the opening. From under the sink, place a rubber gasket,
then a metal or fiber friction ring, over the strainer.
Reinstall the locknut and tighten it, then reinstall the
tailpiece. |
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RELATED PROJECTS
Clearing a Fixture Drain
Line
Clearing Sink Drains
with a Plunger
Replacing Drain Traps
Unclogging a Sink Drain
Trap
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