Turned off water to refrigerator and unplugged electrical. Removed assembly that holds water filter. Removed rear cover at base of refrigerator. Unhooked two water lines going to water filter assembly. Removed old assembly. Installed new assembly. Reattached two water lines. Vacuumed out base of refrigerator, reinstalled rear cover. Plugged in electrical and turned water on. All done. Works great. Quiet once again!