For a standard seat replacement you will need to shut off water and remove stem. Below the stem is the seat. It will either have a square center hole or hexagonal hole. If you don't have a seat wrench, you can get one at the hardware store when you pick up your replacement seats and washers. The new seats might not have the same inside type hole, so buying a tool that has both styles would be helpfull. Insert the correct seat tool into the seat and turn counter clockwise to remove seat. Reverse this to install new seat. Be sure to put a small amount of of pipe joint compound on the seat threads before installing. Replace the stem washers and reinstall on faucet. Make sure you take off the aerator or shower head and flush debris from system when you turn on the water. If your valve is a wall mount faucet with horizontal stems, you will need to take the faucet off at the union nuts and replace the seats from the back side of valve body. Remember, Lefty Loosy and Righty Tighty. Hope this helps and good luck.
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For a standard seat replacement you will need to shut off water and remove stem. Below the stem is the seat. It will either have a square center hole or hexagonal hole. If you don't have a seat wrench, you can get one at the hardware store when you pick up your replacement seats and washers. The new seats might not have the same inside type hole, so buying a tool that has both styles would be helpfull. Insert the correct seat tool into the seat and turn counter clockwise to remove seat. Reverse this to install new seat. Be sure to put a small amount of of pipe joint compound on the seat threads before installing. Replace the stem washers and reinstall on faucet. Make sure you take off the aerator or shower head and flush debris from system when you turn on the water. If your valve is a wall mount faucet with horizontal stems, you will need to take the faucet off at the union nuts and replace the seats from the back side of valve body. Remember, Lefty Loosy and Righty Tighty.
Hope this helps and good luck.