Open the door below your sink, and turn the water-supply valve to the "Off" position.
Disconnect the garbage disposal from the drain pipe assembly using a pipe wrench, and lift out the garbage disposal.
Remove the shank washers at the bottom of the sink, within the cabinet, using a basin wrench, and then lift out the old faucet from the sink.
Disconnect the water-supply tube from the bottom of the sink using a basin wrench.
Apply a thin layer of silicone caulk to the base of the new LDR faucet using a caulking gun.
Place the new LDR faucet onto the sink, and line up the faucet so that it fits properly.
Reconnect the water-supply tube to the bottom of the sink, and make sure the pipe is firmly tightened using your basin wrench.
Reinsert the shank washers to the bottom of the sink, and then reconnect the garbage disposal.
Turn the water-supply valve to the "On" position, then test the water to make sure it comes out of the new faucet.