Hi. I'm installing a Grohe tub filler set into a deck tub: http://www.grohecatalog.com/product/25049/. According to the instructions, the ceramic cartridge (Item 6 and 7 in the parts list and exploded diagram) has to be removed before soldering. Here's the problem...
Unlike the diverter cartridge (which came out easily), I can't get either handle unit's ceramic cartridge to come out. Neither the hot nor the cold one will unscrew. Even with a lot of effort.
According to the drawing in the link above, both the hot and cold handle ceramic cartridges unscrew counter-clockwise. Is this correct? Is there some trick to get these cartridges out?
I'm pulling my hair out on this one (and I have little left to pull out). Any help is appreciated.
p.s. To answer the obvious questions:
- I have the proper sized plumbers wrench.
- I removed the diverter cartridge with minimal hassle using the same sized plumbers wrench (17mm).
- On alternate Thursdays, I've been known to walk and chew gum at the same time.