How To Repair Moen Single Handle Bathroom Sink Faucet

How to Repair Moen Single Handle Bathroom Sink Faucet

Moen single handle bathroom sink faucets are known for their durability and ease of use. However, even the most well-made faucets can eventually develop problems. If your Moen faucet is leaking, dripping, or not working properly, you may be able to repair it yourself with a few simple tools and parts.

Tools and Parts You'll Need

Adjustable wrench
Phillips screwdriver
Flathead screwdriver
Replacement cartridge
O-rings

Step-by-Step Repair Instructions

1. Turn Off the Water Supply

The first step is to turn off the water supply to the faucet. There are usually two shut-off valves located under the sink, one for hot water and one for cold water. Turn both valves clockwise to turn off the water.

2. Remove the Handle

Once the water supply is turned off, you can remove the handle. On most Moen faucets, the handle is held in place by a small screw. Use a Phillips screwdriver to remove the screw, then pull the handle straight up to remove it.

3. Remove the Cartridge

With the handle removed, you can now access the cartridge. The cartridge is a cylindrical-shaped component that controls the flow of water through the faucet. Use an adjustable wrench to loosen the nut that holds the cartridge in place. Once the nut is loose, you can pull the cartridge straight out.

4. Replace the Cartridge

Inspect the old cartridge for any damage or wear. If the cartridge is damaged, it will need to be replaced. To replace the cartridge, simply push the new cartridge into the faucet body and tighten the nut. Make sure that the cartridge is seated properly before tightening the nut.

5. Replace the O-Rings

The O-rings are small rubber gaskets that help to create a watertight seal between the cartridge and the faucet body. Over time, O-rings can become worn or damaged, which can lead to leaks. To replace the O-rings, simply remove the old O-rings and replace them with new ones.

6. Reassemble the Faucet

Once the cartridge and O-rings have been replaced, you can reassemble the faucet. Start by inserting the cartridge into the faucet body. Then, tighten the nut that holds the cartridge in place. Next, place the handle on the faucet and secure it with the screw. Finally, turn on the water supply and check for leaks.

7. Troubleshooting

If you are still experiencing problems with your Moen faucet after following these instructions, there may be a more serious problem that requires the assistance of a qualified plumber.