How to Install a Bathtub Stem

If your bathtub stem is leaking, it more than likely has a worn out washer or threads and needs to be replaced. It is not as hard as it sounds. You do not need special tools or skills to replace the stem.

Things You'll Need

• Flat tip screwdriver
• Phillips head screwdriver
• Pliers
• Deep well socket set

Instructions

1. 

   Use your flat tip screwdriver to remove the plastic cover plate in the center of the faucet handle. The cover plate will have a hot and cold symbol on it. Slide the flat tip screw driver under the edge of the plate and pry up. The plate will come off.

2. Use your flat tip screwdriver to remove the screw in the center of the faucet handle. When the screw is removed, pull out on the handle and the handle will slide off. Behind the handle is a metal escutcheon ring. Turn the ring counterclockwise by hand and remove it. Use your Phillips head screwdriver to remove the screws holding the metal cover plate. Take the cover plate off.

3. Turn off the water. You may have to turn it off at the main. The water main is often located at the street in your yard. It will be under a metal cover. Use your pliers to turn the knob on top of the main counterclockwise as far as it will go.

4. Use your pliers to turn the exposed bathtub stem clockwise all the way. This will release pressure and any water that is still in the water line. Use your deep well socket set to find the appropriate size socket and ratchet to fit on the nut at the back of the bathtub stem. Turn the stem counterclockwise to remove it. Take the stem with you to the hardware store and purchase a new stem identical to the one that you removed.

5. Install the new bathtub stem using the deep well socket, and tighten completely. Use your pliers to turn the stem clockwise to the off position. Replace the metal cover plate, the escutcheon ring, the handle and the plastic center cover plate. Turn the water back on at the main. Test your new stem by turning the water on in the tub.

Tips & Warnings

• Do not remove the stem until you have turned off the water at the main. The water will shoot out of the water pipe if you take the stem out before turning off the water.