TM  5-5420-209-12 Table 4-3. Unit Preventive Maintenance Checks and Services (PMCS) for the Interior Bay cont. Location Item Interval Item to Item To Be Inspected Equipment Is Not Service/Check Procedure Ready/Available If 46 Monthly Handlerail Inspect posts for cracks at support base, Broken  welds  allowing Posts and Rope    cracks/elongation  of  bolt  slots,  broken  or water into bay cavity. deformed  rope  ring Inspect rope for frayed or stretched strands. Posts and rope missing. 47 Monthly    Lift  Pockets  and    Ensure pin functions properly. Quick Release Inspect pin for cracks and broken strands on Pin retaining wire rope. Inspect pockets for cracks and broken welds. 48 Monthly    Deck  Surface Inspect for punctures, cracks, tears, dents, Any damage which holes and broken welds. allows  water  into  bay cavity. Check condition of non-skid coating. 49 Monthly    Bilge Plug Ensure plug(s) are secured with wire rope to Any  plug  missing. ponton. Inspect  rubber  seal  for  cuts,  elasticity  and  dry rot. Check  handle  operation. NOTE Receptacle  consists  of  entire housing  (Block)  in  which connector  is  seated. 50 Monthly    Connector Inspect for cracks, broken welds, elongation Cracks or broken welds Receptacle and  deformation. noted.  Elongation  or deformation  prevents proper  seating  of connector. NOTE Proper  connector  has  a narrow center bar (0.69 inch); older  connectors  have  thicker (.500) in center bar. Loose or missing set screws will allow water into bay cavity. 51 Monthly    Roadway Ensure connector is correct type. Incorrect  connector  type. Connectors Inspect  connector,  eye  bracket,  set  screws, Any defect which spring and spring pins for cracks and prevents  proper  seating deformation. of  connector. 52 Monthly    Roadway Inspect for ruptured seams, holes punctures Any  defect  allowing Surface and  cracked  welds. water into bay cavities. 4-24 No.