Replace Moen Cartridge Bathroom Sink Faucet

Moen faucets are known for their reliability and durability, but even the best faucets can eventually start to leak or malfunction. If you're experiencing problems with your Moen bathroom sink faucet, it may be time to replace the cartridge. Replacing a Moen cartridge is a relatively simple and inexpensive repair that can be completed in about 30 minutes.

Here's a step-by-step guide on how to replace a Moen cartridge bathroom sink faucet:

1. Gather your tools

You will need the following tools to replace a Moen cartridge bathroom sink faucet:

Phillips screwdriver
Adjustable wrench
New Moen cartridge

2. Turn off the water supply

The first step is to turn off the water supply to your sink. There will be two shut-off valves under the sink, one for hot water and one for cold water. Turn both valves clockwise until they are completely closed.

3. Disconnect the water lines

Once the water supply is turned off, you need to disconnect the water lines from the faucet. Use an adjustable wrench to loosen the nuts that hold the water lines in place. Be careful not to overtighten the nuts, as this can damage the water lines.

4. Remove the handle

The next step is to remove the handle from the faucet. On most Moen faucets, the handle is held in place by a small screw. Use a Phillips screwdriver to remove the screw and then pull the handle straight up to remove it.

5. Remove the cartridge

With the handle removed, you can now access the cartridge. The cartridge is held in place by a large nut. Use an adjustable wrench to loosen the nut and then pull the cartridge straight out of the faucet body.

6. Install the new cartridge

Now it's time to install the new cartridge. Insert the new cartridge into the faucet body and tighten the nut until it is snug. Be careful not to overtighten the nut, as this can damage the cartridge.

7. Reattach the handle

Once the cartridge is installed, you can reattach the handle. Align the handle with the stem on the cartridge and then push it down until it is secure. Tighten the screw that holds the handle in place.

8. Reconnect the water lines

Now that the handle is reattached, you can reconnect the water lines. Hand-tighten the nuts that hold the water lines in place. Do not overtighten the nuts, as this can damage the water lines.

9. Turn on the water supply

The final step is to turn on the water supply to your sink. Open both shut-off valves under the sink counterclockwise until they are fully open. Check for leaks around the faucet and tighten any loose connections as needed.

Congratulations! You have successfully replaced the cartridge in your Moen bathroom sink faucet. If you have any questions or concerns, please consult a qualified plumber.