TM 9-2320-209-20-3-3 18-40. WATER SEGREGATOR UNIT SERVICE (TRUCK M46A2C). WARNING Smoking, sparks, or open flame are not allowed within 50 feet of work area during this task. Fuel may burn, causing explosion, injury to personnel, and damage to equipment. TOOLS: None SUPPLIES: Container PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. FRAME 1 1. Open truck rear compartment doors. 2. Put container under drain tube (1). 3. Turn drain valve (2) to the left. When water stops draining from drain tube (1), turn drain valve to the right to close. 4. Close truck rear compartment doors and take away container. END OF TASK 18-197