TM 10-5430-243-12&P 0010 00 0010 00-5 Change 1 Table 1.  Operator Preventive Maintenance Checks and Services For 20,000 and 50,000 Gallon Collapsible Water Storage Tanks (continued). ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 8 Before Drain Hose Assembly (7) Inspect for damaged hose, and damaged or missing gaskets. Gaskets are missing or damaged. Hose is damaged. 9 Before Gate/Ball Valve Assembly (8) Check for bent or binding stem, and broken hardware.  Check gaskets and cam lever arms for damage.  Check for proper ease of operation.  Check for missing or damaged dust caps and plugs. Stem, hand-wheel or handle, gasket, or cam-lever arms are damaged or missing.   Gate/Ball valve will not open/close. 10 During Filler/Discharge Assembly, Hose Attachments and Couplings (1, 4) Inspects for leaks at elbow couplings.  Check fittings and couplings for distortion or damage. Hose assembly leaks or components are damaged.  Leak is present at coupling. 11 During Tank (2) Inspect for cuts, punctures and leaks. Tank is cut, punctured or leaking. 12 During Vent Fitting Assembly (3) Vent cap must move freely and is in a closed position. Vent cap binds or does not move. 13 During Drain Ball Valve Assembly (6) Check for bent, broken, or missing ball valve handle.   Check for missing couplings, dust cap, drain plug, gaskets, and for proper function.  Check for leakage at ball valve drain. Ball valve handle is missing, damaged, or leaking.  Valve does not shut off. 14 During   Drain Hose Assembly (7) Inspect for leakage.   Hose assembly leaks or is damaged. 15 During Gate/Ball Valve Assembly (8) Check for bent or binding stem, broken hardware, and leakage.  Check gasket and ball valve cam-lever arms for damage. Gate valve stem, hand-wheel, and gasket are missing or damaged.  Ball valve cam-lever arms are leaking, missing, or damaged.