Fix Leaky Bathroom Faucet
Diagnose and repair common bathroom faucet leaks including cartridge replacement and O-ring repair.
- Turn off water supply before starting
- Take photos before disassembly for reference
Step-by-Step Instructions
Step 1: Turn Off Water Supply
Locate and turn off water supply valves under sink. If no local valves, turn off main water supply.
💡 Pro Tips:
- Test faucet to ensure water is off
- Clear area under sink for access
✅ Expected Result:
Water supply is shut off and faucet is dry
Step 2: Disassemble Faucet Handle
Remove handle screw (may be under decorative cap), pull off handle, and remove packing nut.
💡 Pro Tips:
- Take photos at each step
- Keep small parts in a bowl
✅ Expected Result:
Faucet handle and packing components are removed
Step 3: Remove Cartridge or Stem
Pull out cartridge (newer faucets) or unscrew stem assembly (older faucets). Note orientation.
💡 Pro Tips:
- May need cartridge puller for stuck cartridges
- Note which way cartridge faces
✅ Expected Result:
Internal faucet mechanism is exposed
Step 4: Replace Worn Parts
Replace O-rings, cartridge, or stem washers as needed. Apply thin layer of plumber's grease.
💡 Pro Tips:
- Match O-ring sizes exactly
- Don't over-grease threaded connections
✅ Expected Result:
All worn sealing components are replaced
Step 5: Reassemble and Test
Reassemble faucet in reverse order, turn water back on, and test for leaks.
💡 Pro Tips:
- Don't overtighten packing nut
- Check for leaks at all connections
✅ Expected Result:
Faucet operates smoothly with no leaks
What You'll Need
Tools Required:
- Adjustable wrench
- Screwdriver set
- Needle-nose pliers
- Seat wrench
Materials Needed:
- Replacement cartridge or O-rings
- Plumber's grease
- Thread sealant tape