This is the hard part.
There is a lot of rubber surface area which may have grown attached to its surroundings inside the pipes. Getting the cartridge to start moving was a task. Most important, you do not want to break something inside the wall by prying or tugging too hard.
What I did:
I took the Nylon fittings and reversed the white ones so that they were longer by the length of the geared section, (back to back instead of front to back), then I placed them over the exposed spindle.
Next I placed the black Nylon piece into its original home, inserted the screw and slowly tightened. This created mechanical force between the pipe and the cartridge that literally leveraged the cartridge forward almost 0.25 of an inch.
Once the cartridge began to move, I removed the Nylon parts and set them aside again.
Now, using vice grips on the flats of the spindle I was able to pull straight out to remove the cartridge. This still took quite a bit of effort.
In the second image, you can see the cartridge almost free of the pipe.

• Moen Shower Valve Cartridge Removal Tool

Moen Shower Valve Cartridge Removal Tool

Fatal error during installation kaspersky antivirus. Feb 26, 2005. Moen Shower Faucet Removal Thanks for your reply. Unfortunately now I have a 'real' problem. I went to the hardware store and purchased the replacement cartridge and set about removing the old one. First, the plastic tool that they provided was nowhere near up to the task of removing (or in fact even. Jan 05, 2012 This video shows how to remove the cartridge from the new style of MOEN 4600 bathroom sink faucet.