TM  5-5420-209-12 Table 4-2. Unit Preventive Maintenance Checks and Services (PMCS) for the Ramp Bay cont. Location Item Interval Item to Item To B. Inspected Equipment Is Not Procedure Service/Check Ready/Available If 5 Weekly Skin Surface Inspect surface area for punctures, holes and Any darnage which allow dents  exposing  interior  ribs. water into bay interior (If in doubt, perform soap bubble test). Inspect  seams  for  cracked/broken  welds. Cracked/broken   welds noted. 6 Weekly Bridge  Latch Inspect brackets, shims and strike catches for Broken welds, binding or Receptacle cracks, broken welds, binding and deformation  prevents deformation. engaging  latch  noted. 7 Weekly Unfolding Ensure unfolding mechanism functions Broken  welds  noted  or Mechanism properly. deformation  prevents Inspect cover plate, spring pins, pins, lever, mechanism  for and connecting link for cracks, broken welds functioning  properly. and  deformation. NOTE Cable,  when  adjusted correctly, will be taut NOT tight. 8 Weekly Unfolding  Cable    Inspect for kinks, compression, flat surfaces, Cable  kinked, and broken or frayed strands. compressed,  flattened  or any strands broken. 9 Weekly Support  Links Inspect for broken welds, cracks and Broken  welds  noted. deformation. 10 Weekly Lifting  Eye Inspect for cracks and elongation of eye. Any  cracks  noted  or  eye elongation  equals  25% of original circumference. 11 Weekly Unfolding  Cable Inspect for kinks, compression, flat surfaces, Cable  kinked, and broken or frayed strands. compressed,  flattened  or any strands broken. NOTE Ensure latch and receptacle are  adjusted  properly  (latch “T”  rests  snugly  against  strike catch  of  corresponding receptacle). 12 Weekly Bridge  Latch Inspect brackets, supports and pins for cracks,  Cracks,  broken  welds broken welds and deformation. noted or deformation causes  binding. Inspect  springs  for  deformation  and  stretching .  Springs  stretched. 4-13 No.