Maintenance And Troubleshooting For Moen Kitchen Faucet

Since Moen is the company that invented and first introduced the cartridge faucets, it comes as no surprise that it is among the largest faucet manufacturers in the USA and around the world and that it is a popular choice when people are looking for the best kitchen or bathroom faucets.

If you already own a Moen kitchen faucet, and it needs to be repaired or removed for cleaning, then rest assured because, with this detailed guide, you can do it by yourself, quite easily.

Removing a Moen Faucet

Since most repairs, cleaning, and other maintenance jobs require that the faucet is removed and disassembled, here are the steps which you need to take to do it easily and properly:

  1. Make sure you turn off the water valves to the sink and turn the faucet on to remove any water and reduce pressure
  2. Find the screw cap on the handle and use a flat head screwdriver to pry it open to access the screw
  3. Use a 1/8 Allen wrench to unscrew it and to pull off the loosened handle
  4. Use tongue and groove pliers to loosen and unscrew the nut which holds the cartridge. In case your faucet has a retaining pin securing the cartridge, you can remove it with a flat head screwdriver instead
  5. Remove the cartridge by holding the valve stem with pliers and wriggling it gently until it loosens and comes out. In case it is stuck, then you may need to find a cartridge puller and use it
  6. When the cartridge is removed, make sure you examine it for any cracks or damage and proceed to replace it with a new original Moen cartridge if needed

Repairing the Moen Cartridge

Make sure that you inspect the cartridge thoroughly. Look for nicks and cracks or other damage. If you find such damage, the cartridge will need to be replaced.

If the cartridge has a scale buildup, you can easily clean it by soaking it into a cup or bowl filled with vinegar overnight, and this will resolve the issue.

After cleaning the cartridge, you should replace the O-rings and gaskets before putting it back into the faucet.

They can be removed easily by prying them out with a flat head screwdriver or another similar tool.

You can buy complete kits of gaskets and O-rings for any Moen model.

Replacing the Valve Seats

In case the cartridge still leaks after you have cleaned it and replaced the gaskets and O-rings, then it may have damaged or worn valve seats. While they can be reground, it is easier and usually cheaper to simply replace them with new ones.

Fixing a Moen Kitchen Faucet with a Leaking Base

In case your kitchen faucet is leaking from the handle or at the deck of the sink, then you may need to replace the O-rings, which are on the spout base. In order to do that, remove the handle and then proceed to lift up the spout from the valve.

The remove the old O-rings and replace them with new ones using a bit of plumbers grease before putting them on the valve body.

Then proceed to clean the valve body and also the inside of the spout before installing it back on.

Removing a Moen Kitchen Faucet Sprayer

Here are the steps to follow for removing a Moen faucet with a sprayer:

  1. Turn off the water supply by using the valves under the sink, or  stop the general water supply if you can’t locate those
  2. Use pliers to detach the supply line pipes and the sprayer tubes
  3. Remove the sprayer by loosening the hose just below the handle, and then undo the nuts which are located on each side of the spray hose, and pull the hose off

Tightening the Base of your Moen Kitchen Faucet

Over time with extensive use, the base of your kitchen faucet may become loose and cause leaks or discomfort. To tighten it back and resume its normal function, you should follow these steps:

  1. Make sure you clean out the area in and below the sink to give space to work and for easy access
  2. Turn the valves to stop the water flow
  3. You will need to get down, and into the cabinet under the sink, so you may want to use a torch or headlight
  4. Use a wrench to loosen up the nuts of the supply pipe or hose
  5. Then use a basin wrench to tighten the nuts which hold the base of the faucet to the sink or other surface
  6. Once they are tightened, and the faucet is stable once again, you can reconnect it to the water supply and turn the water back on

Tightening the Handle of Your Moen Kitchen Faucet

If your handle has become loose due to a lot of use, you can easily tighten it and restore its original functionality.

Remember to stop the water supply first before proceeding, and look for a screw or a decorative screw cap on the handle. Use a flat-headed screwdriver to pry it open. You can use some masking tape to protect the screw cap from becoming scratched while you are removing it.

Once you find the screws, tighten them in order to prevent the wobbling of the handle and proceed to put the caps back on and turn the water back on again.

Removing and Cleaning the Moen Kitchen Faucet Aerator

Aerators often get clogged, especially if you have hard water at home. The good news is that you can easily remove the aerator from your Moen kitchen sink and clean it to restore its functionality and the proper water flow.

To remove the aerator, turn it clockwise in order to unscrew it from the spout. If it is stuck, you can use pliers but use them carefully and gently.

Once you remove the aerator, inspect it for deposits or debris, and clean it out with your finger, a stick, or a screwdriver.

Then rinse off the aerator, and unplug any clogged holes with the help of a needle, toothpick, or paperclip.

To remove mineral buildup, you should soak the aerator screen and other parts in a bowl of vinegar overnight. On the next day, you can use a toothbrush to remove any remaining deposits.