Moen 1255 issue

[Rich689]

I have a Moen kitchen “gooseneck” faucet with pullout hose that was installed in July 2020. I had to replace the 1255 cartridge in 2022 as hard water took its toll on it. No issues until the past few weeks when I have noticed something feeling loose when operating the handle. Tried taking the handle off and retightening several times, wasn’t the issue. Tried 2 new cartridges, still didn’t fix the problem. I did notice the set screws that came with the cartridges are now plastic instead of metal, but I don’t know if that makes a difference. The old metal set screws don’t work with the new cartridges.

The faucet doesn’t leak but the operation is no longer smooth, a drastic change. I thought maybe there is air coming in the line from somewhere but I cannot find anything else that is loose.

Any ideas? Thank you in advance

 

[Breplum]

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[John Gayewski]

Could be the faucet body is ruined or you have the wrong cartridge or the cartridge isn't fully seated. Very hard to say.

 

[Rich689]

In case it helps anyone else, there is a somewhat concealed brass nut that surrounds the brass body that holds the cartridge. There is probably a specialized spanner wrench that Moen uses to build this at their factory, but a small flathead screwdriver is enough to tighten the nut sufficiently for the faucet assembly to not feel loose.