21 After Engine c. Add oil through oil fill tube (4) if (Contd) Operation oil level necessary. 22 Fuel/water a. Inspect fuel/water separator (7) a. Fuel/water separator for leaks, damage, or loose mounting separator is leaking, hardware. damaged, or loose. b. Open drainvalve (6) and drain 1/2 pt (0.25 L) of fuel and water into a container. c. Check for contaminated fuel. If fuel is contaminated, notify unit maintenance. 23 Fuel filter Check fuel filter (5) for cracks, leaks, Any class III fuel and security. leakage. Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Contd). ITEM NO. INTERVAL ITEM TO CHECK/ SERVICE PROCEDURE NOT FULLY MISSION CAPABLE IF: Change 1 2-31 TM 9-2320-386-10 7 6 5 LUBRICANT MIL SYMBOL (NATO CODE) SPECIFICATION SAE 15W40 -4 to +122 -20 to +50 (O-1236) MIL-PERF-2104 OEA -50 to -4 -46 to -20 (O-183) MIL-PERF-46167 EXPECTED TEMPERATURES °F °C