Hi Bruce,
My 8 year old fridge, I only remove the top screw which is the pin there. With that pin removed, I pull the top of the door away from the fixed portion of the hinge, just enough to clear it. Then I lift the door off the bottom hinge pin. Install in reverse order.
With the door removed, place it face down on the floor and work the metal reinforcement plate into position. I used a thin putty knife to encourage the two steel prongs to get past the white gasket without damage. You will know it is good when the metal ring snaps over the plastic hinge bushing thingy.