Many people think that it is difficult to remove single handle shower faucets, but actually it is not a mammoth task. Just follow these steps carefully.
Step 1 - Removal the Fixture
Cover up the shower drain with a drain plug, or a towel if you don't have one. Remove the metal or plastic face plate of the faucet. You can pop this off. Remove the screw that now appears. You may need to take out the escutcheon in some cases. Remove the area surrounding the face plate of your fixture. If there is caulking, you can loosen it with a knife or screwdriver.
Step 2 - Cartridge Removal
The piece of metal sticking out of the exposed fixture is called the cartridge. Grab your pliers after you have shut down the water. You should be able to remove the pins or nuts that hold the cartridge by popping off the pin or by turning the nut. Now, pull out the cartridge out of the wall using your pliers. Your fixture has now been removed.
You only want to remove the shower faucet because leakage has been caused and it needs to be repaired or replaced with a new one. In order to reassemble the fixture, you need to complete the steps in reverse.