20 Most Recent Moen & Replacement Cartridge - Page 2 Questions & Answers

What screw is it? http://www.moen.com/replacement-parts/product?product=IMGLIB:87739

Alan, I'm a certified plumber for over 30 years specializing in service. I hate telling you this but what you have is a Moen posi-temp and there is no tricks or easy way to remove it other than a cartridge puller which won't help in your case since it's already broken. Just break out your drill and carefully have at it, BUT don't leave the water on it won't help and may be dangerous and/or ruin your drill. For some reason on all Moens cartridges the rubber grommet tend to adhere themselves to the brass valve body's. Sorry, wish I had better news...

Moen cartidges are supposed to be guaranteed for life, so take the bad one back for a refund!! Once the handle is off there is a metal u clip that you pry up to take off. You'll probably need to purchase a Moen cartridge removal tool, because simply pulling on the cartridge stem often is not enough force to remove the old one. Look at the way the ears are positioned with the clip (prior to removal) and replace in the same position.

remove cart. grease it up with plumbers grease check seals on cart.

change the diverter

Should be coming out if head not stripped or threads inside at set screw aren't stripped. Can you tell at all with perhaps flashlight if set screw is turning at all? Look like it backing out?

The instruction sheet (pictures, no useful explanatory text) is athttp://www.moen.com/shared/docs/instruction-sheets/ins744e.pdf