I have a leaking single knob shower faucet. The faucet is a Moen that is over 20 years old.
I believe all I need to do is replace a washer. The problem I have is that I cannot figure out how to remove the valve.
Is a special tool needed? I would attach a picture of the valve but I can’t find the attachment button. Any ideas.
If I am correct about the valve (without seeing it or a model number) you will be replacing a cartridge. to do this follow these instructions
First remember to turn off th water, both hot and cold to the faucet.
Then remove the handle noting any special way it comes off for proper replacement.
Next remove chrome piece around stem area, it should pull straight off. There may be a couple plastic pieces before the ring, you will need to remove them first but be careful and try not to change them so you can replace them the same way. Theses plastic pieces are for adjusting the max. temp for the anti scald device. It is a SAFETY item.
Then look closely at the top of the stem you should see a little copper clip sticking up that was in the bump of the chrome ring you took off.
With needle nose pliers or such, pull the ring straight up and out. you have now released the cartridge.
NOTE THE POSITION OF THE CARTRIDGE INCLUDING THE NOTCH ON THE BRASS PIECE IN THE CENTER OR YOU COULD PUT IT TOGETHER BACKWARDS.
Now comes the hard part.
Grasp the brass stem that the handle was mounted to and pull straight out. Vise grips are a good tool for this step. This may not want to come out easily as there is buildup around the stem and 2 or 3 O-rings that are fighting against you, but I have never had one I could not get out. The newer style faucets come with a plastic piece to aid in the removal of the stem but I am pretty sure it will not help you. If you cannot remove it check Moen’s web site and see if they have a tool to help you.
Once removed, check inside of valve and clean out any dirt etc. and then reinstall in the opposite order. Should work just like a new faucet when you are done.
admin Plumbing Anti Scald Device, Brass Piece, Bump, Chrome Ring, Copper, Dirt, Leaking Faucet, Leaky Faucet, Leaky Shower Faucet, Max Temp, Model Number, Moen, Needle Nose Pliers, Notch, O Rings, Plastic Pieces, Theses, Vise Grips