TM 10-5430-236-12&P 0006 00 0006 00-6 Table 1.  Preventative Maintenance Checks and Services ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 12 Before Berm Liner Drain Gate Valve Assembly (5) a. Check for loose or missing hand wheel, screws, and nuts. b. Open and close valve.   Valve stem should move freely. Hardware loose or missing. Valve sticks or binds. 13 During Tank (6) Inspect for leaks in tank.   If found, refer to leak repair (WP 0013 00). Leak can not be repaired. 14 During Vent Fitting Assembly (7) Check vent coupling half for leaks Vent coupling half leaking 15 During Filler Assembly (8) Check elbow coupling half for leaks. Elbow coupling half leaking.   Coupling half or locking arms damaged. 16 During Discharge Assembly (9) Check elbow coupling half for leaks. Elbow Coupling half leaking.   Coupling half or locking arms damaged. 17 During Tank and Berm Liner (10) Check tank and berm liner for leaks. Tank or berm liner leaking. 18 During Berm Liner Drain Gate Valve Assembly (5) Check gate valves for leaks. Gate valve leaking. 19 After Tank (6) a. Inspect tank fabric for tears, punctures, and loose seams. Tear, puncture, or loose seam found. b. Inspect for loose or missing screws on fittings.  Tighten loose screws. Screws damaged or missing. 20 After Vent Fitting Assembly (7) Inspect elbow coupling half for leaks. Elbow coupling half leaking.   Coupling half or locking arms damaged.   Gasket damaged.