The Moen PosiTemp tub and shower
faucet cartridge, how to replace it, how
to remove the handle and how to adjust
the scald guard feature of the faucet.
It's very important that you turn off
the water before you attempt to replace
the cartridge, it is also very
important, you don't set the water
temperature too high, someone can be
scalded. First things first, make sure
the water is off, you will need to turn
main water valve off.
Turn on both the hot and cold side of
another faucet in the home (at a lower
level if possible) to be sure the water
is off and to relieve the pressure from
the water lines.
Great Deals on Moen Cartridges
In many of the images below you will
notice the chrome plate is removed, but
you will not need to remove the the
chrome plate to repair this faucet and
replace the stem.
With this model, you need a small Alan
or hex key to remove the handle, you
will need to completely remove the screw
in order to remove the handle. Once the
screw is removed the handle will just
Notice the oval
shaped tile cut out? see how i cut it
out and how this may help you.
Once the handle is removed there will be
a piece of plastic attached to the
cartridge with a Philips screw, you will
need to remove the screw and piece of
plastic, so that you can remove the
Once the sleeve is removed you will be
able to remove the pin that holds the
cartridge in, Make sure the water is off
at this point.
Once the sleeve is removed you
will be able to remove the pin
that holds the cartridge in,
Make sure the water is off at
Note the image on the right, this sleeve
just pulls straight out.
Remember the chrome
plate and the
Goof Plate do
not need to be replaced, to replace the
Moen Positemp Cartridge. This is what
the front of the faucet looks like with
the handle and sleeve removed.
Notice the brass pin that goes through
the front of the cartridge, using a
small pair of pliers pull the pin
straight up. If you did not turn the
water off or did not relieve the
pressure, the cartridge may shoot out at
Put the brass pin in a safe place, most
new cartridges do not come with a new
pin, You will be able to purchase a new
brass pin if you need one. With the pin
removed, put the piece of plastic back
on to the Moen Positemp cartridge.
With the plastic attached to the Moen
Positemp cartridge, use the plastic as a
handle to pull the cartridge straight
Now note the rubber washer on the other
side of the cartridge, notice the hole
is on the right side. the point of
mentioning this is, if the rubber
washers come off, make sure you put the
correct washer on the correct side of
under the rubber washer there is a hole
in the plastic of the cartridge that
lines up with holes in the rubber
washers, so that you will have no
trouble putting the rubber washers back
on correctly. It is also important that
the Moen Positemp cartridge be installed
in to the shower body correctly.
If the Moen Positemp cartridge will not
come out, you may need to get a special
tool to remove it.
Unlike other Moen cartridges, the
Positemp will not work properly if it is
installed upside down, Note: A Plumber
from New Jersey was kind enough to point
out, If the water lines have been been
installed backwards in the walls, (the
hot water pipe on the right instead of
on the left as per the plumbing code)
you will need to have the HC markings on
the faucet facing down for the faucet to
Pay special attention to the above image
note there is a rubber washer with a
hole on the left side.
Please check the location of the HC
marking on your faucet before you remove
the cartridge and be sure to reinstall
the new one the same way, installing it
backwards can cause scalding. Thank you
Don From NJ.
Note the above picture. click on it and
look closely at the front of the Moen
Positemp cartridge, the tab at the top
has the letters H C, This needs to be on
the top, If the pipes in the wall have
been installed correctly, if not then it
needs to be at the bottom.
Replace the pin, make sure the pin goes
in all the way, you will not have to
force it, if it does not go in easy, the
cartridge may not be all the way in,
turn the brass part of the stem to
relieve any pressure from inside the
If the pin is in correctly the chrome
sleeve will slide right over it, if not
the sleeve will not go on. Now note the
Brass part of the stem, that the plastic
was attached to, you will notice a
little notch on one side of the brass.
this must face DOWN.
With the Chrome sleeve back in place put
the larger part of the scald guard
feature into the sleeve in can only go
in one way
The smaller piece is the adjustment part
of the scald guard feature What this
does is, it stops the handle from going
past the point you set it at. if you
place it with the tab further to the
left the handle will move further
allowing hotter water
More towards the right will restrict the
hottest water. Keep in mind water hotter
then 120 degrees Fahrenheit. Can be
dangerous and cause scalding.