Tutorial: Installing the Moen 1224 Cartridge

Overview

line drawing 1224 Moen cartridge

To complete the project, you should first gather the tools and all the parts you will need. Next, the basic steps are to disassemble the handle, remove the cartridge, reinstall the new cartridge, and test your water. 

You should have the following tools available to you before you start: adjustable wrench, safety glasses, flashlight, pliers, screwdrivers, and cartridge removal tool (some models). 

Before You Start…

  • Skill Level & Time to Complete
    • Beginner - About 1 hour
    • Intermediate - About 30 minutes
    • Advanced - About 15 minutes
  • Caution: Before beginning your repair, always turn your water supplies OFF. Then turn your faucet on to be sure the water is completely off and to relieve water pressure.
  • Faucet models have slightly different instructions. Please review each step before installing.

We recommend to always flush the valve before installing the new cartridge:

  • Clean the inside of the valve body with a soft bristled nylon brush (e.g. old toothbrush), to remove any mineral buildup.
  • The next step will send a lot of water through the open valve. Use bowls or similar devices to redirect water from the open valve back to the sink or tub. You may also want to put a towel over the open valve to collect the water.
  • Then, turn on the water supply lines to flush clean water through the open valve. This will push debris up and out of the unit.

Steps

Step 1     

If you are replacing a cartridge in faucet type A continue to step 2a.
If you are replacing a cartridge in faucet type B continue to step 3a.
If you are replacing a cartridge in faucet type C continue to step 4a.
If you are replacing a cartridge in faucet type D continue to step 5a.

Step 2a

     
 
 
Disassembly

To remove the cartridge from your faucet assembly, first use a flat-headed screwdriver to carefully pry the cover from the handles. Using a Philips screwdriver, unscrew the handle screws and pull the handles off from the faucet assembly.
Step 2b     

 

 

 

Then, loosen and remove the nut from the cartridge using pliers.
Step 2c     
 
 
 
Cartridge Removal

You are now ready to remove the old cartridge. With pliers, grasp the cartridge stem and pull it directly up out of the valve assembly.
Step 2d     

 

 

 

Discard the old cartridge and insert the new cartridge into the valve assembly. Make certain that the notches line up as indicated.
Step 2e     
 
 
Cartridge Reassembly

Reattach the nuts to the valve assemblies and tighten them with pliers.
Step 2f     

 

 

 

Replace the handles and secure them with the screws. Finally, snap-on the handle covers to the top of the handles.
Step 3a     
 
 
Disassembly

To remove the cartridge from your faucet assembly, first use a Philips screwdriver to unscrew the handle screws and pull the handles off of the faucet assembly.
Step 3b     

 

 

 

Then, loosen and remove the nut from the cartridge using pliers.
Step 3c     
 
 
 
Cartridge Removal

You are now ready to remove the old cartridge. With pliers, grasp the cartridge stem and pull it directly up out of the valve assembly.
Step 3d     
 

 

 

Discard the old cartridge and insert the new cartridge into the valve assembly. Make certain that the notches line up as indicated.
Step 3e     
 
 
 
Cartridge Reassembly

Reattach the nuts to the valve assemblies and tighten them with pliers.
Step 3f     
 
 
 

Finally, replace the handles and secure them with the screws.
Step 4a     
 
 
 
Disassembly

To remove the cartridge from your faucet assembly, first hold the handles steady and unscrew the handle hub counterclockwise. Once the handle hub is loosened completely, pull the handle off the valve assembly.
Step 4b     
 
 
 

Then, loosen and remove the nut from the cartridge using pliers.
Step 4c     
 
 
 
Cartridge Removal

You are now ready to remove the old cartridge. With pliers, grasp the cartridge stem and pull it directly up out of the valve assembly.
Step 4d     
 
 
 

Discard the old cartridge and insert the new cartridge into the valve assembly. Make certain that the notches line up as indicated.
Step 4e     
 
 
Cartridge Reassembly

Reattach the nuts to the valve assemblies and tighten them with pliers.
Step 4f     

 

 

 

Finally, replace the handles and secure them by tightening the handle hubs.
Step 5a     
 
 
 
Disassembly

To remove the cartridge from your widespread faucet assembly, first hold the handle steady and unscrew the handle hubs counterclockwise. Once the handle hubs are loosened completely, pull the handles off the valve assembly.
Step 5b     
 
 
 

Then, using tool #14272 (which is not included), loosen and remove the cartridge nut.
Step 5c     
 
 
Cartridge Removal & Reassembly

You are now ready to remove the old cartridge. Grasp the cartridge stem with pliers and pull the cartridge straight up out of the valve assembly. Using a Philips head screwdriver, unscrew the stem extension.
Step 5d     
 
 

 

Reattach the stem extension to the new cartridge. Insert the new cartridge assembly into the valve assembly. Using light pressure, turn the assembly until it locks into place.