TM 10-5430-243-12&P 0019 00 0019 00-5 Change 1 Table 1.  Unit 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 During Filler/Discharge   Gate Valve (2) or   Ball Valve (3) Check for bent or binding stem, broken hand-wheel or handle, and leakage. Stem, hand- wheel or handle, gasket, or cam- lever arms leak or are damaged or missing. 9 During Drain Ball Valve (4) Check for bent or binding stem, broken handle, and leakage. Stem or handle leak or are damaged or missing. 10 During Vent Fitting Assembly (5) Check for evidence of leakage, damage, or missing parts.  Check the vent cap for cleanliness and freedom of operation.  Check if the vent cap gasket, flat rubber gasket, or cam- lever arms are damaged or missing. Vent cap is damaged or missing.  Vent cap gasket, flat rubber gasket, or cam-lever arms are damaged or missing. 11 During Filler/Discharge Assembly (6)   (GTA Container Model) or Filler/Discharge Assembly (7) (Reliance and MPC Models) Check for evidence of damage or leakage.   Check if cam-lever arms are damaged or missing.   Check if the elbow body is cracked or sealing surface is badly dented.   Check for loose, damaged or missing screws and gaskets. Cam-lever arms are damaged or missing.  Elbow body is cracked.   Elbow sealing surface is badly dented. 12 During Drain Fitting Assembly (8) Check immediate area for evidence of leakage.   Check the drain plug, drain hose, or drain valve, for damaged or missing parts. Drain plug, hose, or valve is missing, improperly connected, or damaged. 13 After Tank (1) Inspect for tears, punctures, or leaks. Tank has tears or punctures that cannot be repaired.