The Grohe Ladylux faucet contains a cartridge valve system. This cartridge has valves that operate both hot and cold water flow. Often when the faucet leaks or does not dispense the right temperature water, this part needs replacing. Worn out seals or cracked rubber gaskets lead to leaking and inconsistent flow. The replacement process requires a cartridge kit and about a half hour of your time.
Things You'll Need
Grohe cartridge repair kit
Shut off the water to the faucet by closing the valves underneath the sink on the incoming water pipes.
Remove the Ladylux faucet handle by loosening the screw on the side of the handle with an Allen wrench. Pull off the handle once screw is removed.
Unscrew the cap cover under the handle by turning it counterclockwise. Remove this part. Then unscrew the adapter with a screwdriver and remove it.
Take out the cartridge screws by unscrewing each with an Allen wrench and slide the cartridge out of the faucet. Put the new cartridge in its place and tighten the cartridge screws.
Replace the adapter by screwing it back on and put the cover back onto the faucet and tighten it by hand. Replace the handle and tighten its screw with the Allen wrench.