TM 9-2320-361-20 3-41. COOLING SYSTEM SERVICING This task covers: a. Draining System c. Filling System b. Cleaning and Flushing System INITIAL SETUP: APPLICABLE MODELS All MATERIALS/PARTS Antifreeze (Appendix C, Item 6) Cleaning compound kit (Appendix C, Item 10) REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Hood raised and secured (TM 9-2320-361-10). Battery ground cable disconnected (para. 4-48). GENERAL SAFETY INSTRUCTIONS Do not remove radiator cap if engine is hot. a. Draining System WARNING Do not remove radiator cap if engine is hot. Steam or hot coolant under pressure may cause injury to personnel, 1. Turn radiator cap (1) to first stop. Allow any pressure to escape. 2. Remove radiator cap (1) by pressing down and continue turning counterclockwise. Lift off radiator cap (1) from filler neck (2). NOTE Have drainage containers ready to catch coolant. 3. Open engine block draincock (5) and radiator draincock (4). 4. Close engine block draincock (5) and radiator draincock (4). b. Cleaning and Flushing System Following cleaning and flushing instructions included in cleaning compound kit, and clean and flush radiator (3) and cooling system. c. Filling System NOTE Capacity of cooling system is 32 quarts (30.3 liters). 1. Fill cooling system with required amount of antifreeze (Table 3-1). 2. Add water to 1 in. (2.45 cm) below top of filler neck (2). 3. Install radiator cap (1) on filler neck (2), start engine (TM 9-2320-361-10), and allow engine to reach normal operating temperature. 4. Stop engine (TM 9-2320-361-10) and allow engine to cool. WARNING Do not remove radiator cap if engine is hot. Steam or hot coolant under pressure may cause injury to personnel. 5. Remove radiator cap (1) from filler neck (2) and check level of coolant in radiator (3). Add water if necessary. 3-94