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I believe this Grohe cartridge model is 47450. I've got all the pieces off and know there's a metal pin that I'll need to remove from the cartridge to swap it out. However, the chrome sleeve or collar is stuck. After these photos were taken, I've tried WD-40 and CLR, twice for each of them. I can't get it unstuck either twisting or pulling with needle nose pliers. Do I need to just Dremel it off at this point and replace the collar and the cartridge? Any tips are much appreciated. I should note we live in Florida which has some of the hardest water around because of the limestone aquifers.
Hi,
I need to replace the cartridge on our shower but its old and I can’t see any model number anywhere. It’s most likely leaking cold water into the water coming out so it needs to be changed. Any help identifying it would be appreciated!