I pushed the fridge away from the wall, turned off the water, and removed the old part. Removing the old part was difficult because of calcium buildup, so the lines had to be cut away from the old part. The new part installation was very simple. I didn't quite get the new lines in as tightly as I should have the first time, and the new part initially leaked a bit, but that was an easy fix. This was about a week ago and now the fridge is working better than ever.