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We are trying to fix a leak in our older Moen bathtub faucet. It's a single handle - not sure of the model I just know it's a bit older and not "Moentrol" or "PosiTemp - the two screws on the escutcheon plate are at like 4 and 8 o'clock.

We've gotten this far and we cannot pull the stop tube out. There's also some kind of white plastic plate attached to it as you can see - we have no idea what it is and we can't see any other screws or anything to get further access to the cartridge. The plastic has some instructions on it that we can see that refer to soldering. Any tips?

IMG_20130126_163630_830.jpg
 

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the hole should have been cut as big as that plastic plate. it should not keep the sleeve from coming off. they probably left it to provide support for the thin wall panel. i always strapped s 1x2 above and below the valve so you could tighten the plate up and have something to keep the valve from pulling to far through the hole. from the looks of the inside of the stop tube the cartridge has leaked and its just stuck. you may have to grab it with pliers to get it off. try squirting some wd40 in there to see if it will come loose. its just corroded the plastic isn't holding it.
 

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Wrap some sand paper around the jaws of a pair of channel locks, grip it at the bottom and tap the channel locks with a hammer straight out.
Not working, slip a socket inside the tube and try again. The socket should keep it from crushing.
 

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The chrome sleeve needs to be removed from center stem. After you need too take the brass clip that holds the cartridge in place out its on top the little sqaure on top of the chrome centerpiece is where it slides over the clip. It's probably going to be rusty so spray an automotive product called breakaway it is ten times better than w d 40-
 
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