TM  5-5420-209-12 NOTE This PMCS use the one-look format, beginning with the Roadside Bow Ponton as viewed from the rear of bay with unfolding cables, clockwise. During PMCS, ensure that ALL components and assemblies are  correctly  installed . Incorrect installation  may  cause  additional  equipment  damage  or  failure. When checking or inspecting an item, also inspect all associated components for structural tim- age  and  loose,  broken  or  missing  hardware. Remove  rust  and  accumulated  corrosion  during  PMCS.  Corrosion  not  removed  promptly  will degrade  equipment  performance. Table  4-3.  Unit  Preventive  Maintenance  Checks  and  Services  (PMCS)  for  the  Interior  Bay. Location Item Interval Item To Be Inspected Equipment Is Not Item to Procedure Ready/Available If Service/Check NOTE To  effectively  perform  the following  steps,  bay  should  be down  loaded  from  transporter. 1 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 Receptacle, when properly adjusted, will allow latch to seat snugly in strike catches. 2 Weekly Bridge  Latch Ensure  latch  is  adjusted  properly. Receptacle Inspect brackets, shims and strike catches for Broken welds, binding or cracks, broken welds, binding and deformation  prevents deformation. engaging latch noted. 3 Weekly Skin Surface Inspect surface area for punctures, holes and Any damage 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. 4 Weekly Tie Down Pin Inspect pin weld seams for broken welds. Broken welds noted or Inspect pin for erosion of pin surface. erosion  of  surface  area prevents securing bay to transporter. 4-18 No.