TM 10-5430-243-12&P 0010 00 Change 1 0010 00-4 Table 1.  Operator Preventive Maintenance Checks and Services For   20,000 and 50,000 Gallon Collapsible Water Storage Tanks. NOTE Within designated intervals, these checks are to be performed in the order listed. ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 1 Before Installation Area Inspect the installation area for sticks and other sharp objects that might cause punctures and leaks. Sharp objects are present. 2 Before Filler/Discharge Assembly (1) Inspect for proper connection and loose or missing gaskets.  Check fittings for damage or distortion. Couplings are damaged, leaking or loose.  Hose attachments are straining fabric. 3 Before Tank (2) Inspect for cuts and punctures.  If punctured or torn, perform emergency repairs (see WP 0006 00).   Inspect for loose or missing bolts where fittings connect to tank. Tank is cut, or has tears or punctures that cannot be repaired.  Tank has loose or missing bolts. 4 Before Vent Fitting Assembly (3) Check vent cap gasket, flat rubber gasket, and cam- lever arms for damage, evidence of leakage, or missing parts.  Check vent cap for cleanliness and freedom of movement.   Check for damaged or missing gaskets.   Vent cap is damaged or missing. Vent cap gasket, flat rubber gasket, or cam- lever arms are damaged or missing.  Vent cap is damaged.   5 Before   Filler/Discharge Assembly, Hose Attachments and Couplings (4) Inspect for leakage, proper connection, and loose or missing gaskets.  Check for cuts and tears.  Check for missing dust caps and drain plugs. Couplings are damaged or loose.  Dust caps or plugs missing.   Hose attachments straining fabric. 6 Before Drain Fitting Assembly (5) Inspect for missing gaskets, chain assembly, or drain plug, damaged coupling arms. Gaskets or drain plug missing.   Coupling arms damaged. 7 Before Drain Ball Valve Assembly (6) Inspect for missing valve handle, couplings, dust cap, drain plug, gaskets, and for proper function. Handle missing; valve does not shut off.