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Moen Solutions

B18-9000 Valve With A 1234-Removal And Installation

 

 Tools Needed:

3/32" Allen Wrench

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Flathead Screwdriver 

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Phillips Screwdriver

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Soft Brush

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Removal of the 1234 Cartridge

1. Always turn your water supplies off before disassembling you faucet.  With the supplies turned off, move your faucets handle to the "on" position to relieve pressure.

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2. Identify and remove your handle:

Knob

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Hold the knob while unscrewing the escutcheon.

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Remove the knob.

Hub Lever

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Hold the lever while unscrewing the hub.

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Remove the handle.

Side-Screw Lever

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Locate the hole in the side of the handle.

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Rotate the lever handle so the 3/32” Allen
wrench can be inserted into the hole.

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Loosen the Allen screw only enough to
allow the handle to be removed. Do not
remove the Allen screw.

3. Using cartridge nut removal tool (PN 14272), unscrew the retaining nut. The retaining nut does not unscrew to the top and will loosen after approximately 8-10 turns.

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Plastic Retainer Nut

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4. Pull the red or blue stem extension and cartridge upward to release it from the valve. The black retaining nut will come out with the cartridge. Remove this for reuse.

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Plastic Retainer Nut

Mineral build up can make the cartridge more difficult to remove in some cases.  Additional force may be required to remove.  

5. The red or blue stem extensions will need to be re-installed on the new cartridge. To remove each, first find the side of the extension that has five ribs at the top. Push on the side with five ribs. This will create a small gap as at the base of the stem extension where it meets the cartridge. Insert the end of a flathead screwdriver into this gap. Gently twist the screwdriver to release the stem extension from the cartridge.

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Installing the Cartridge and Re-assembly

6. Using a soft nylon brush, clean the inside of the brass valve body to insure there is not any debris or buildup on the walls of the chamber. Be sure the chamber is clean and dry before inserting the new cartridge.

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7. Snap the stem extension onto the new 1234 Cartridge. Make sure that it locks securely onto the 1234 cartridge stem.

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8. Look into the brass chamber to find a notch in the brass. Then, find the black plastic tabs on each side of the cartridge. Insert the cartridge so the tab is fully seated in the notch in the brass.

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Notches in the valve body Outer tabs on the cartridge

9. Reinstall the cartridge retaining nut into the brass valve body. Using tool number 14272, screw the cartridge retaining nut all of the way down. Make sure this is tight. Rotate the stem extension to the closed position.

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Rotate the stem to the closed position

10. Next, reassemble your faucet by working backwards from steps 2 to 1.

All Done!

 

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