On Tue, 29 May 2018 16:47:11 -1000, John Keiser
wrote:

I have a Grohe shower unit installed by a previous owner.
I want to inspect so I can get a replacement cartridge.
I don't know the model number.
There are 2 handles which need to be removed: the bottom controls the
temperature [came off easily - minor lime deposits visible on the
inside] and a smaller top knob which toggles water flow from the main
shower head to a hand-held unit.
I removed the only set screw but the smaller handle won't slide off.
I assume it has a nice lime buildup on the stem.
I don't want to brute force as Grohe parts are expensive.
The handle is positioned so soaking with CLR would require great cleverness.
Any suggestions on how to safely remove the handle?
Thank you.

John Keiser


Some thoughts:

Mist the CLR with a bottle sprayer give it time and try vibration by
lightly tapping with a screwdriver handle. Repeat numerous times if
needed.

Ensure the part is not screwed / threaded on.

Try some spray penetrating oil to free the part.

If it is possible, use plumber's putty, make a dam to hold liquids.
Can't see your situation.

Try a rubber strap wrench to break the part loose.

Post a photo on a free hosting sight with a URL posted back in AHR.

UMMV