How To Replace A Delta Bathroom Sink Faucet Cartridge

How to Replace a Delta Bathroom Sink Faucet Cartridge

Does your Delta bathroom sink faucet have a leaky handle, produce uneven water pressure, or struggle to adjust temperature? You might have to replace a faulty cartridge. Cartridge replacement is relatively easy, requiring basic tools and plumbing skills. Follow these detailed instructions to effectively replace your Delta bathroom sink faucet cartridge.

Step 1: Gather Required Tools and Materials

Before starting, gather the following:

Delta replacement cartridge - Ensure it matches your faucet model
Adjustable wrench or pliers
Screwdriver (optional)
Duct tape or rags (optional, for protecting surfaces)
Replacement O-rings (optional, as needed)

Step 2: Safety Precautions

Close the main water supply valve under the sink. Turn on the faucet to release any remaining water in the lines. Use duct tape or rags to protect the faucet base and countertop from potential scratches.

Step 3: Remove the Handle

Locate the set screw on the handle. Use the screwdriver or Allen wrench to loosen the screw. Grip the handle and pull it straight up to detach it.

Step 4: Unscrew the Bonnet Nut

Underneath the handle, you will find a bonnet nut. Use the adjustable wrench or pliers to unscrew the bonnet nut counterclockwise. Be careful not to overtighten or damage the nut.

Step 5: Remove the Cartridge

Once the bonnet nut is removed, gently pull out the cartridge. If it's stuck, you can try wiggling it slightly. Inspect the O-rings on the cartridge and replace them if necessary.

Step 6: Install the New Cartridge

Align the tabs on the new cartridge with the corresponding slots in the faucet body. Gently push the cartridge into place until it stops. Make sure the O-rings are properly seated.

Step 7: Reattach the Bonnet Nut

Take the bonnet nut and thread it onto the faucet body by hand. Then, use the wrench or pliers to tighten the nut securely. Do not overtighten.

Step 8: Reinstall the Handle

Slide the handle back onto the faucet stem. Align the notch on the handle with the index mark on the faucet body. Tighten the set screw to secure the handle.

Step 9: Turn on Water Supply and Test

Turn on the water supply valve under the sink. Open the faucet to check for any leaks. If there are leaks, adjust the bonnet nut accordingly.

Conclusion

Replacing a Delta bathroom sink faucet cartridge is a straightforward process that can restore your faucet to proper working condition. By following these instructions carefully, you can effectively fix your faucet issues and enjoy a smoothly functioning bathroom sink.