TM 9-2320-361-10 2-5. BODY EQUIPMENT CONTROLS AND INDICATORS (Contd) b. Key 1 2 3 4 5 6 7 8 9 10 Water Tank Trucks (M50A2 and M50A3). Item and Function Water Discharge Hoses are used to deliver water from tank compartments. Strap is used to secure manhole cover during arctic operation when heaters are installed in tank openings. Water Lever Gage is dipped into tank compartments to measure water levels. Water Suction Strainer is attached to water suction hose to prevent foreign matter from entering tank. “Y” Coupling is attached to the line discharge/suction valve to facilitate delivery of two streams of water at the same time. Water Suction Hoses are used to till tank compartments when gravity fill is impossible. Gravity Delivery Line Suction Valve is turned left to let water flow through gravity delivery line. Pump Delivery Line Discharge Valve is turned left to let water flow through pump delivery line. Compartment Valve Levers are pulled back to open discharge valves which control flow of water from tank compartments. Water Dispenser Nozzle is used to control flow of water at the point of delivery. 2-12