Order a new water tank from ApplianceParts Pros.com.. Remove all food from fresh food side and crisper drawers. Remover shelves and drawers. Remove filter, cover and housing. Turn off water to frig. Relieve water pressure in the line by pressing the water dispenser. Unplug frig. Remove RH shelf bracket and tube channel. Remove the white tube from the filter base by using an opened end wrench to push up on the tube's connector and pull down on the tube. Remove the screw holding the tank. Remove the cardboard cover from the rear of the frig. Remove the white tube from the valve assy. Catch water in a pan. Pull water tank out and thread the new tube in. Pull the tube in place at the rear and re-connect it to the valve assy. Mount the new water tank. Connect white tube to the filter. Repalce all items removed in reverse order. Check for leaks with the filter installed, water on, and frig plugged in.