How to Repair a Shower Knob

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Showers can be a refreshing start or end to a day, but they can also provide a little bit of annoying frustration should the knob not completely close the valve, which results in a leaky, dripping faucet. Besides being annoying, if left unchecked the leak will, over time, increase a home or property owner's water bill. Luckily, with a little know-how and some DIY attitude, you can fix your own shower fixture knob without having to call a plumber.

Things You'll Need

  • Phillips head screwdriver (optional)
  • Flathead screwdriver
  • Pliers
  • New cartridge (optional)
  • New O-rings (optional)
  • Locate the water valve in your house or basement should you not already know its location. The shut-off valve is usually located in your basement or near your water meter and may have a protective panel covering it if it's recessed into a wall.

  • Turn the water off by turning the knob to the right or left as far as you can. Use the screwdriver to remove the screws covering the panel and pry the panel away if necessary. Use the flathead screwdriver as a wedge to pry off the valve covering.

  • Loosen the bonnet nut with a set of pliers and remove it and the screen underneath to reveal the backside of your faucet. Fidget with the cartridge on the insides of the faucet. If it moves freely, it needs tightening. If the accompanying O-rings move as well, these two could be the culprits in creating the leak.

  • Press down on the cartridge (or completely remove and replace it if desired) and press the O-rings back into their proper places. Replace the screen and use the pliers to re-tighten the bonnet nut back into place.

  • Turn your water back on and allow it to run for a few seconds then turn it off to check to see if you've tightened the knob enough to alleviate the leak. If not, repeat the steps. Should the leak still be present, you may need to replace the O-rings.

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References

  • "Plumbing"; Rex Cauldwell; 2007
  • Photo Credit shower image by Dragan Trifunovic from Fotolia.com
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