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How to Replace Lavatory Faucet Cartridges

The following instructions apply to a widespread lavatory faucet.

1. Turn Off the Hot and Cold Water to the Faucet

  • Beneath the sink, locate the shut-off handles for the hot and cold water lines.
  • Turn the water source valves clockwise ↻ to close the valves and turn off the hot and cold water.

2. Remove Each Handle and Escutcheon

  • Remove the set screw be sure not to lose it of the handle, then remove the handle.
  • Use your bare hands to unscrew the escutcheon by turning it counterclockwise ↺. To get a better grip, try wearing rubber gloves. If you cannot remove the escutcheon with your hands, use a strap wrench with a rubber strap. If you still cannot remove the escutcheon, use a strap wrench.

3. Disconnect Each Hose

  • Beneath the sink, unscrew and disconnect the water hoses from the hot and cold faucet valves.

4. Remove Each Valve

  • Above the sink, turn the blue teflon holding nut counterclockwise ↺ to unscrew and remove it.
  • Remove the faucet valve.

5. Remove Each of the Existing Cartridges

  • Place the valve in a vise to hold it steady. Be sure to put some protective material around the valve to protect the threads.
  • Use a socket wrench or adjustable wrench to turn the cartridge counterclockwise ↺ to unscrew and remove the cartridge from the top of the valve.

6. Install Each New Cartridge

  • Insert the new cartridge onto the top of the valve and turn it clockwise ↻ using a socket wrench or adjustable wrench.
  • Adequately tighten the new cartridge. Do not under-tighten or over-tighten the cartridge.

7. Reinstall Each Valve

  • From underneath the sink, insert the valve through the hole in the sink or counter.
  • Above the sink, insert and screw in the blue teflon holding nut.
  • Below the sink, screw the blue teflon holding nut to tighten the valve in place.
  • Adjust the blue teflon holding nuts above and below the sink as needed, to adjust the height of the valve.

8. Reconnect the Hoses to the Valves

  • Beneath the sink, screw and connect the water hoses to the hot and cold water valves.

9. Install Handles and Escutcheons

  • Use your bare hands to screw the escutcheon into place by turning it clockwise ↻. To get a better grip, try wearing rubber gloves.
  • Insert the handle into place and screw in the set screw into the side of the handle.

10. Turn On the Hot and Cold Water

  • Beneath the sink, turn the hot and cold water valves counterclockwise ↺ to open them.