From Moen's trouble shooting discussion:
Typical Cause
Debris or an obstruction in the balancing spool is causing it not to move freely within its housing. In some models, a lack of pressure feeding the hot and cold will be the cause. The valve also may need to be calibrated.
Solution
First, verify the hot water system in the home is operational.
Second, it is essential to identify the model of your faucet. Please view our Find Your Product section to determine your model.
For Posi-Temp models:
The 1222 cartridge would need to be replaced and the valve body would need to be flushed and cleaned.
For Moentrol models:
Inspect the 1423 balancing spool. This will appear on the front of the valve body, either to the right or above the cartridge. It will look similar to a large flat head screw, and it will be brass in color. A large flat-bladed screwdriver can be used to unscrew the balancing spool from the valve. There will be a spool inside this piece, and it needs to move freely inside of its shell. If the spool does not move freely, then the 1423 balancing spool will need to be replaced.
For ¾" ExactTemp models:
Note: For ½" ExactTemp valves refer to original service manual
Note: When calibrated properly, the ExactTemp valve should provide a range of temperature of 80 to 120 degrees Fahrenheit.
For ioDigital models:
For standard valve models:
https://www.moen.com/customer-support/faq#/cat-troubleshooting
SOURCE: I have the single handle moen faucet that has the
Monique, I really do not have the real answer to why the acryllic ones break but there are many factors that contribute to it such as torque placed on it at the connection point with the stem and repeatred pushing and pulling on the handle due to normal use. The handles also contain an oil base in them and when that oil dissipates the handle becomes more brittle and less flexible. The other reason is simple physics. The force placed on the handle is all focused at the point where the stem contacts the handle and the screw attaches it to the stem.
As for installing your new faucet the only suggestion i would make is to make sure to use a thread sealant like Rectorseal. It is a paste like substance that comes in a can with a brush attached to the inside of the lid - you do not need alot of this placed on the thread just a thin coat as the directions imply or you will have a mess. Also if you have metal supply lines you may need new ones as the length needed may have bgecome greater. I recommend using the gray poly supplies as they are easy to cut to length.
Other than that it is a real simple process. Just remember the position you want the new pull up handle to be at to stop the sink as you may have it in a position that will not allow total closure.
Thanks for using Fix Ya and good luck.
SOURCE: Moen one handle kitchen faucet very low water stream
if the pressure is good with the head off then you can probably get a new head for it u shouldn't have to change the cartrige. it sounds like the head is clogged so plastic pieces in the head to help save water "water savers" it is hard to clean them i would try changing the head u should be able to find on for a moen, u buy for looks u buy it for life. take the old head with u when u go to buy a new one so they can match it up to the right one.if you can't find it and a lowes or home deptm try a plumbing supply house
SOURCE: can't remove moen bathroom faucet assembly to
If you are dealing with the type of Moen faucet I think you are, what you need to do is remove the pop-up rod. do this by loosening the locking bolt on the linkage under the sink and pulling the rod out from the top. Once the rod is out you will need to find the correct size allen wrench which goes into the center hole. there is a mounting bolt in there that needs to be unscrewed. Easy when you know how.
SOURCE: moen T2113 shower faucet no hot water
You need to replace the stem. This will not cost you a dime; call MOEN and tell them the issue, with the model number, and they will send the replacement part. Many people don't know that MOEN is guaranteed for life (to the original owner)......another words, say you are the original owner :) They will not ask any questions. Good luck! PS Also works on any MOEN faucets you may have.
SOURCE: the cartrige inside my moen faucet leaks
moens website. they have parts break down and diagrams
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