How To Replace Cartridge In Moen Bathroom Sink Faucet

How to Replace Cartridge in Moen Bathroom Sink Faucet

A malfunctioning cartridge can cause various issues in your Moen bathroom sink faucet, such as leaks, dripping, or difficulty operating the handle. Replacing the cartridge is relatively simple and can be done with basic tools. Here's a step-by-step guide:

Tools Required:

Adjustable wrench or socket wrench
Philips screwdriver
Replacement Moen cartridge (consult user manual for the correct model)
Plumber's grease or silicone-based lubricant

Step-by-Step Instructions:

1. Shut off Water Supply:

Locate the shutoff valves under the sink and turn them clockwise to shut off water supply to the faucet.

2. Remove Handle:

Use a Philips screwdriver to remove the handle screw and pull the handle straight up to detach it from the faucet.

3. Loosen Cartridge Retaining Nut:

Use an adjustable wrench or socket wrench to loosen the cartridge retaining nut located below the handle.

4. Remove Existing Cartridge:

Grasp the cartridge body with your hand or a pair of pliers and pull it straight out of the faucet body.

5. Inspect O-Rings and Seats:

Examine the O-rings and seats on the old cartridge for any damage or wear. If necessary, replace them with new ones included in the replacement cartridge kit.

6. Apply Lubricant to New Cartridge:

Apply a thin layer of plumber's grease or silicone-based lubricant to the O-rings of the new cartridge.

7. Insert New Cartridge:

Align the notches on the new cartridge with the corresponding slots in the faucet body. Insert the cartridge by pushing it straight into the faucet.

8. Tighten Cartridge Retaining Nut:

Use an adjustable wrench or socket wrench to tighten the cartridge retaining nut. Ensure it is snug but avoid overtightening.

9. Reattach Handle:

Slide the handle back onto the faucet and secure it with the handle screw.

10. Turn on Water Supply:

slowly open the shutoff valves under the sink to turn on water supply.

11. Check for Leaks:

Operate the faucet handle and check for any leaks or drips. If any leaks occur, adjust the cartridge retaining nut as needed.

Tips:

Use the correct replacement cartridge for your Moen faucet model.
If the cartridge is severely damaged or leaking excessively, it may be necessary to replace the entire faucet.
If you encounter any difficulties or leaks during the process, do not hesitate to contact a licensed plumber.

By following these steps, you can successfully replace the cartridge in your Moen bathroom sink faucet and restore its functionality.