Hinge Assy, Cabinet Top SVCE RH or LH(315W, 424/P,
          424/S, 424/P-2, 424/S-2, UC-24)
   424    Use Prior to Serial #3100000
          Starting With #3100000 See 7019721.
   315W   Use Regardless of Serial Number
  UC-24   See 7019721.
   NOTE:  See 7019719 for Carbon & Overlay Units.