How To Replace Cartridge In Moen Single Handle Bathroom Faucet

Replacing the cartridge in a Moen single-handle bathroom faucet is a relatively simple task that can be completed in under an hour. By following these step-by-step instructions and gathering the necessary tools, you can save both time and money by doing it yourself. Here's everything you need to know to replace the cartridge in your Moen faucet.

Tools Required:

Adjustable wrench or basin wrench
Allen wrench (usually included with the new cartridge)
Phillips head screwdriver
Flat head screwdriver (optional)
Replacement cartridge for Moen single-handle faucet
Paper towels or a cloth

Step-by-Step Instructions:

Turn off the water supply:
Locate the water supply valves under the sink and turn them clockwise to shut off the water flow to the faucet.
Remove the handle:
Using an Allen wrench, loosen the set screw located at the base of the handle. Pull the handle straight up to remove it.
Loosen the packing nut:
Use an adjustable wrench or basin wrench to loosen the packing nut located directly below the handle. Be careful not to overtighten the nut.
Remove the cartridge:
Pull the cartridge straight up and out of the faucet body. If the cartridge is stuck, you can use a flat head screwdriver to gently pry it loose.
Install the new cartridge:
Align the new cartridge with the faucet body and push it straight down until it is fully seated.
Tighten the packing nut:
Use an adjustable wrench or basin wrench to tighten the packing nut. Be sure to tighten it securely, but not too tightly.
Replace the handle:
Align the handle with the cartridge stem and push it straight down until it clicks into place.
Tighten the set screw:
Use an Allen wrench to tighten the set screw at the base of the handle.
Turn on the water supply:
Slowly turn on the water supply valves under the sink to allow water to flow through the faucet.
Check for leaks:
Inspect the faucet for any leaks. If there are any leaks, tighten the packing nut or replace the cartridge.

Replacing the cartridge in a Moen single-handle bathroom faucet is a straightforward process that can be completed in a short amount of time. By following these step-by-step instructions and using the appropriate tools, you can save money and keep your faucet functioning properly.