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Turn off the water to the house undo the screws. Pull out the cartridge. Bring it to any plumbing place or builder supply. Hand it to them they may hand you a new one free without a word being said. This has been the way for decades now. Install the new cartridge.
Please give Moen customer service a call. If you are the original owner your faucet may still be under warranty. Regardless, you should give them a call at 1-800-BUY-MOEN to see what can be done.
You need to purchase a replacement cartridge before trying to remove a defective Moen cartridge. Always buy genuine Moen. If your valve turns on and off with a pull/push action you need part number 1225B, otherwise you need part number 1222. The 1200 cartridge will work in lieu of the 1225B but is more expensive and no longer used in Moen valves. There is a tool that comes with these cartridges which looks a bit like a white plastic cap.with notches on one end and a square head on the other.
Once the clip has been removed the only thing keeping the cartridge in the vslve is old sticky lubricant. Place the tool over the cartridge end and rotate as necessary until the notches are fully engaged and it no longer rotates. Using pliers or a wrench over the squared end, twist the tool back and forth several times. Remove the tool, and using pliers, pull the old cartridge out. Put the tool on the replacement part and insert it back into the valve. Lightly tap on the squared end to make sure the new part is completely seated, then use the squared end again to turn the cartridge as necessary to align for the clip to be reinstalled.
Always lub up the o-rings with cooking oil so it would seat better.Some will damage easy and keep wearing when not placed in a lubed up hole. Hope this helps.
Often time a Moen cartridge becomes very fond of it home and doesn't want to leave. I once stood on top of a kitchen sink just to get my back into it to remove a cartridge. That is a rare example.
Once the retainer clip is removed there is nothing to keep the cartridge in place except water minerals, lubricant, and suction caused by the lubricant. Frequently it will take a rocking back and forth of the cartridge to fully free it from it's confines before a good tug. If you don't use the white plastic tool that comes with the new cartridge, you could pull the center stem out only and that's all bad. Before installing the new one see if you can have someone turn on the house water for an instant while you hold a cup or glass over the hole for the cartridge. This will flush out of the valve body any particulate that might affect your new cartridge. The cup will help keep you and your bathroom floor dry.
After inserting the replacement as far as you can, place the tool back onto it and tap on it to make sure it is in all the way. Then use the squared end to put a wrunch on to you can turn the cartridge internally and align it for the retainer clip.
New moen cartridges for tub/showers come with a handy white plastic tool to aid in old cartridge removal. One end is squared off for a wrench, the other is slotted to place over the old cartridge in the wall after the clip has been removed. Place onto cartridge and use a wrench to turn several times back and forth. Remove , grab the stem with pliers and give a tug. You want either service part #1225B (pull/push to turn on) or #1222 (just turn knob counterclockwise to turn on. Get the replacement before you proceed.
hi... yes that's a very common issue with moen "cartridges" -- it's very simple to fix..... grasp the handle and give it a gentle tug upwards when the water is on... if it retracts again, pull the handle out again and tug again but this time a bit harder. Not sure what causes this on new cartridges but it will fix your issue.
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