You said remove the screws, which screws how many?
Answer Hello Rony. If you tilt the refrigerator backwards, you will see the screw for the roller 2166108. Usuall there is only 1, but some models do have 2 screws or more. Hope this helps.
What is the P/N for the back wheel for my Model No. above?
Also, please tell me how to replace it.
Answer Hello Fred! The replacement rollers for your unit is part number 4388239. You can visit our free repair forum for installation assistance. Here is the link, thanks! http://forum.appliancepartspros.com/
Can this roller be used to replace the back wheel?
Answer Hello Maryann. For the back wheel, you will need to order 4388239, according to the model number you provided. Hope this helps.