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Replace Cartridge — Install New Cartridge and Reassemble Valve

Beginner3 hours

Part of project

How to Stop a Dripping Two-Handle Bathroom Faucet · Step 5 of 6

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In this video

Remove and replace the cartridge. Gently pry out the old cartridge with a small flathead screwdriver. Clean any debris from behind the valve and clean the inlet lines to prevent damage to O-rings. Apply plumber's grease to the O-rings on the new cartridge. Carefully insert the new cartridge into the valve body, ensuring proper alignment and install it, keeping hot to the left and cold to the right. Ensure cartridge sits flush.

Goal: Stop the leak

  • Apply plumber's grease to O-rings to ease installation and prevent future binding.
  • Note the orientation of the old cartridge so the new cartridge is installed correctly.

Used in this video

  • Flathead screwdriver (brand: Husky, Purpose: Removing the cartridge, Tip type: Flathead) · optionalRemoving the old cartridge
  • Toothbrush (Purpose: Cleaning the valve) · optionalCleaning the valve body
  • Flashlight (Purpose: Inspecting the valve, Flashlight type: Penlight) · optionalIlluminating the valve body
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FAQs

Do I need all the specialized tools listed, like the specific Klein wrenches, or can I use more common household tools?

While specialized tools can make the job easier, many tasks for a two-handle faucet repair can be accomplished with standard items. A Phillips head screwdriver, an adjustable wrench, and a good pair of pliers (like tongue and groove) are usually sufficient for most beginners.

How realistic are the "beginner" difficulty and "3 hours" estimated time for someone new to DIY plumbing?

This project is indeed beginner-friendly as it avoids complex pipe work. While 3 hours is a good estimate, allow yourself extra time if you're new to plumbing, especially for identifying and sourcing the correct replacement cartridge or dealing with old, seized components.

How can I be sure I'm purchasing the correct replacement cartridge for my specific faucet?

The most reliable method is to remove your existing cartridge first and take it to the hardware store for an exact match. Faucet manufacturers often use proprietary designs, so matching by appearance and model number (if available on the faucet or cartridge) is crucial to ensure compatibility.

My faucet is still dripping after I installed the new cartridge; what should I check?

First, ensure the new cartridge is seated firmly and correctly within the valve body, and all retaining nuts are snug. Hard water deposits can sometimes prevent a good seal, so clean the valve body thoroughly before installation. If the drip persists, the issue might be a worn O-ring elsewhere in the faucet assembly, or the valve body itself could be damaged.

Replace Cartridge — How to Stop a Dripping Two-Handle Bathroom Faucet (Step 5, Video 2) | Stesso