How to Replace a Sink Strainer

If you notice a leak around a sink drain hole, you may be able to fix it by simply loosening the strainer from underneath and applying fresh plumber's putty under the lip. Often, however, the strainer itself is corroded--it may break apart as you pry it up. Replacement is simple and inexpensive.

How to Replace a Sink Strainer

How to Replace a Sink Strainer

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How to Replace a Sink Strainer

How to Replace a Sink Strainer

There are two kinds of basketball 8: one secured by a lock nut, and the other held by a plastic retainer and three screws. The lock-nut type is generally used for stainless-steel sinks because the lock nut tightens against the sink without bending the metal sinks.

To remove an old strainer, first detach the tailpiece. Then remove the lock nut or detach the retainer screws and pry the old strainer out.

When installing a lock-nut, seal the strainer firstopening. Turn off the water supply. Remove all old putty from around the drain opening in the sink and dry it out completely. Apply a 1/8-inch bead of plumber's putty to the flanges of the opening and place the strainer body through the opening, pressing down firmly so that the putty spreads evenly.

To secure the strainer, place the rubber washer and the metal washer onto the strainer body. Then screw on the lock nut finger-tight to hold the strainer while you work underneath the sink. Place the handles of pliers into the crosspieces of the strainer and slide a screwdriver between the handles. Hold onto the screwdriver with one hand to immobilize the strainer while you tighten the lock nut.

Tightening the lock nut comes next. Tighten the strainerseveral turns more, using a 14-inch pipe wrench or a hammer and wood dowel. Brace the dowel against one of the grooves of the lock nut and tap it with the hammer. Do not over tighten the lock nut because you may distort the metal parts or crack the ceramic.

If the tailpiece is worn or corroded, replace it. Otherwise, fit the strainer sleeve over the existing one, and secure it by tightening the coupling. Then tighten the trap coupling. Wipe away excess putty with a soft cloth. Turn on the water and check to be sure there are no several.

How to Replace a Sink Strainer