Repair Moen Shower Faucet

[GaryL]

Cartridge broke off and once handle and plate removed, pin appears to be recessed in fiberglass mould.
Any ideas on how to remove old cartridge as pin is not accessible?

 

[Rickyman]

Cut the fiberglass. It should have been cut properly during original installation

 

[GaryL]

Great - thanks!

I have a jigsaw or can borrow friend's hole saw to increase the access.

 

[Rickyman]

Watch this video and cut your jigsaw blade so you don’t cut any pipes in the wall

 

[Jeff Handy]

You can buy a Roto-zip bit and just chuck it into your drill, and cut the fiberglass with that.
You will feel it bumping up against anything you don’t want to cut.
You can set it to barely stick out of the drill.

Or borrow a Roto-zip or Dremel type tool from someone, but any drill will do in a pinch.

No need for fancy accuracy, just draw a decent circle with a Sharpie, or trace around something like a cup or small bowl.
Stay well inside the trim plate dimensions, you want to leave a firm surface for the foam seal behind the trim plate to rest securely on.