TM 5-3825-229-14&P4-46. SERVICE ENGINE (cont)e.FlushingEngine(cont).(3)Disconnect hoses (1) at cover (2).(4)Close all drain plugs.CAUTIONDo not exceed 50 kPa (7 psi) of air pressure.Excessive air pressure will damage cooling system.(5)Attach flushing gun to water outlet (2). Restrictengine coolant inlet (3) until system fills withwater. Then apply 50 kPa (7 psi) air pressuregradually. Repeat process until water fromcylinder block flow is clean.f.FlushingRadiator.(1) Drain cooling system (Refer to para. c. above)and disconnect radiator hoses (1) at thermostatcover (2).(2) Secure flushing gun in lower radiator hose withhose clamp (3).(3) Fill radiator (4) with water. Be sure filler cap (5) ison tight. Direct upper hose away from engine tominimize collection of water around engine.CAUTIONDo not exceed 50 kPa (7 psi) of air pressure.Excessive air pressure will damage cooling system.(4) Gradually apply 50 kPa (7 psi) air pressure.(5) Shut off air pressure. Fill radiator with water againand apply air pressure. Repeat until water comesout clean.g.FillCoolingSystem.(1)Close all drains. Install thermostat (para. 4-46A).(2)Loosen one water pump plug (2).Flushing Radiator4-92
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