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How to Fix a Dripping Shower

Repair a shower faucet that won't shut off. Most single-handle, cartridge-style faucets can be repaired in an hour or less with basic tools.

By the DIY experts of The Family Handyman Magazine

Identifying a cartridge-style faucet

In this article, we'll focus on fixing a cartridge-style faucet. Cartridge valves have a single handle and operate when the cartridge slides in and out. Don't confuse them with single-handle ball-style faucets, which have a dome-shaped casing under the handle.

We won't deal with two-handle faucets here, which may be either a stem-type valve or ceramic disc valve.

Remove the handle

Turn off the water at the fixture shutoff valves or at your home's main valve. Turn on a faucet to make sure it's off. Remove the handle as shown in Photos 1 and 2. If the handle sticks, try heating it with a hair dryer set on “hot”. If you still can't get it off, use a special handle puller—an inexpensive tool available from plumbing parts distributors or home centers.

Pull the cartridge

Virtually every faucet manufacturer has a different method of securing the cartridge to the faucet body. Look for a clip or spring and remove it (Photo 3). Cartridges are often difficult to pull out. Some manufacturers include a removal cap with new cartridges. Align the cap with the old cartridge ears and try to twist the cartridge loose. Then pull it out with pliers.

If you can't budge the old cartridge, you'll need a cartridge puller. Make sure the one you buy works on your brand of faucet. Look on the handle or trim for the faucet brand or manufacturer. A knowledgeable person at a plumbing parts store may be able to identify the brand and model from a photo. Review Photos 4 and 5 for instructions on using a cartridge puller. Make sure you twist the cartridge loose before pulling it out (Photo 4). Take the old cartridge with you to a plumbing parts store or a home center to find an exact replacement.

Install the new cartridge

Turn the hex screw by hand until it bottoms out. Snug up the hex nut by hand and tug on the cartridge puller handle. If the cartridge won't pull out, hold the puller handle steady and tighten the hex nut two full turns. Pull the cartridge out of the faucet body. Buy an identical replacement cartridge, align it properly and reassemble the parts.

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How to Fix a Dripping Shower

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