Using a 3/32' hex wrench, loosen the two setscrews. Slide the handle and bonnet off the valve. Gently pry the cover plate from the escutcheon to expose the two screws. Using a Phillips screwdriver, unthread the screw and remove the adaptor from the valve stem. Although Kohler faucets are made with the highest quality, like anything else with moving parts, they may need service from time to time Find Maintenance & Replacement Parts for your KOHLER products. The following directions describe removal of the Mastershower Rite-Temp, Thermostatic, Volume, and Transfer Valve Trims. Gently pry off. Turn off your water. Locate the set screw under the handle or cap at the front of the unit. Use a screwdriver to remove the retainer clip at the top of the cartridge housing. Remove the cartridge by gently pulling with pliers. Take the old cartridge to the hardware store to ensure you get the right replacement. Dec 10, 2018 - Cartridge valves are one of four types of valves that you'll find inside a faucet, and they are particularly well-suited for shower faucets. Jump to Step 6: REMOVE THE O-RING - Remove the O-ring - How Replace Cartridge Sink . Clean any debris from the faucet housing with a soft cloth. Sep 4, 2018 - Glow Decor / Getty Images. Most bathroom faucets that have two handles are cartridge-style faucets. . If your house does not have shutoff valves under the sink, turn off the water supply to the house at the main shutoff valve. Used in most 1/2-in. shower valves with single handle; Diaphragm design eliminates freeze-ups; Faucet repair; Cartridge has a diaphragm to ensure consistent .