TM 55-8115-204-23&P Table 2-1.  Preventive Maintenance Checks and Services - Cont. W = Weekly M = Monthly Item Interval Item To Be Procedures No. W M Inspected 3 X Door Assemblies, Right graphite grease (3, Appendix and Left D).  Insure that latching mechanism operates freely. Doors should open and close easily. X  Inspect door gaskets for damage or tears that would allow moisture to enter cargo container.  The door gasket, (1, fig. 2-3) has two sealing lips.  Open the doors and examine both lips for tears, damage, or deformation that would prevent an adequate seal. 4 X Plywood Panels  Open cargo container doors and inspect plywood panels (1, 2, and 3, fig. 2-4) for damage. X  Check kickplate (2, fig. 2-5) to insure that it is securely fastened to plywood sheet (1). X  Check nuts (3, fig. 2-5). Insure that nuts are in place and are tightly fastened. Tighten loose nuts with a 1/4-inch alien wrench. 5 X Panel Joint  Inspect panel joints (4, fig. 2-4) for damage. 6 X Floor Gasket  Inspect floor gasket (4, fig. 2-6) for damage. 7 X Floor Planks  Inspect eight floor planks (1, 2, and 3, fig. 2-6) that make up the floor of the cargo container.  Inspect for holes or punctures that extend through the floor planks. 8 X Tie-Downs  Inspect tiedowns (4, fig. 2-1) in floor planks for damage. 2-5