How to Fix a Dripping Moen Faucet

When it comes to plumbing projects, many homeowners are nervous about tackling something that could potentially damage the plumbing system and cause more expense and headaches when a professional has to be called in to clean it up. However, small projects, such as fixing a leaky tap, are relatively easy and safe to tackle for the average homeowner.

Things You'll Need

• Allen wrenches
• Assorted screwdrivers

Instructions

1. Determine the type of faucet you have. Most Moen faucets produced in the last decade have cartridge valves, which are a type of washerless valve. The cartridge is used in almost all of the single-handled faucets as it allows the hot and cold water to mix. It is also far less prone to leaking than its predecessors.

2. Determine where the leak is originating. Leaks from the end of the spout are cartridge-related, while leaks around the base of the faucet relate to how the entire faucet is seated. In the second case, pulling out the entire faucet may be required to check sealing rings and caulking.

3. Remove the cartridge if the leak is from the end of the spout. Begin by turning off the water to the faucet. Look under the sink to locate shut off taps on the water supply lines. Turn the taps horizontal to the direction of the pipes to close off the supply. Turn on the tap to drain the last of the water out. If there are no shut-off taps under the sink, you will have to turn off the main water valve to the house during the repair. When the faucet has drained the last of the water, plug the sink hole with a stopper or a rag so that small screws and other parts do not get lost down the drain.

4. Disassemble the faucet. Each model is slightly different, but the faucet should have a screw that holds on the top of the assembly. It may be recessed at the back, so look for it carefully. Unscrew the top assembly and set aside. Each piece that comes off should be laid out in the order it came out to make it easier to reassemble later.

5. Pull out the cartridge. In some models, you may have to twist slightly to remove. Put the cartridge in a plastic bag to take with you to get a replacement. Inspect the inside of the tap for any mineral buildups from hard water. Rub with a cloth soaked in vinegar. For more difficult buildups, soak in vinegar for a half hour, then scrub with a toothbrush and rinse.

6. Take the cartridge to a hardware or home repair store to find a match. Many Moen cartridges have a lifetime warranty on them, so the replacement may be free. If not, the replacement cartridge will cost around $12 to $15. Check with the plumbing specialist at the store to ensure that you have the correct replacement cartridge.

7. Reassemble the faucet in the reverse order as you disassembled it. Make sure that you seat the cartridge in firmly and replace the faucet cap, tightening the screw firmly.

8. With the tap in the on position, release the water valves to restore water flow to the taps. Remove the sink plug. Run the water until all of the air is out of the lines. Recheck for leaks.