How to Fix a Leaky Moen Single Knob Faucet
To fix a leaky Moen single knob faucet involves just one procedure, replacing the cartridge inside the faucet body and under the handle. The faucet leaks because water is seeping through the cartridge. The cartridge is designed to be watertight, but even a very small crack in one of the discs will cause your cartridge to leak water into the spout or through the base of the faucet. Only very basic plumbing and repair skills are necessary to complete this simple task. Does this Spark an idea?
Instructions
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1
Close the water valves on the pipes under your sink to stop the water flow to the faucet. You must shut the pipes prior to removing the cartridge; otherwise, water will shoot out of the faucet when the cartridge comes out.
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2
Take out the set screw in the bottom of the handle with an Allen wrench and pull the handle off the faucet.
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3
Twist the dome counterclockwise and take it off the top of the faucet. Remove the cartridge nut under the handle with a wrench or pliers and remove the cartridge. On some models, it is necessary to pull the faucet spout base off the sink to access the cartridge retaining nut.
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4
Install a new faucet cartridge and replace the spout and cartridge retaining nut. Tighten the nut with a wrench or pliers. Replace the dome and tighten by hand.
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5
Slide the new handle onto the faucet stem and tighten the handle screw with an Allen wrench.
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