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![]() TM 9-2320-363-20-2 
NOTE 
Cooling system capacity is 65 qt (61.5 I). Have suitable containers available. 
2. 
USING 45-QT CONTAINER, REMOVE DRAIN PLUG (3) FROM RADIATOR (4). 
NOTE 
Place 8-qt container under each draincock or plug in steps 3 thru 5 to catch antifreeze U 
3. 
OPEN DRAINCOCK (5) IN THERMOSTAT HOUSING (6). 
4. 
OPEN DRAINCOCK (7) IN ENGINE BLOCK (8) OR REMOVE PLUG (7.1). 
5. 
OPEN DRAINCOCK (9) IN WATER PUMP (10) OR REMOVE PLUG (9.1). 
6. 
AFTER ALL ANTIFREEZE IS DRAINED, CLOSE THREE DRAINCOCKS (5, 7, AND 9) OR CLOSE DRAINCOCK 
(5) AND INSTALL TWO PLUGS (7.1 AND 9.1). INSTALL DRAIN PLUG (3).. 
FILL 
1. 
FILL RADIATOR (4) WITH ANTIFREEZE IN ACCORDANCE WITH UNIT PMCS, TM 9-2320-363-20-1. 
2. 
CLOSE DRAINCOCK (2) AND INSTALL RADIATOR CAP (1). 
3. 
BRING ENGINE TO OPERATING TEMPERATURE TO OPEN THERMOSTATS AND CI RCULATE ANTIFREEZE 
THROUGHOUT ENGINE. CHECK FOR LEAKS. 
WARNING 
Do not open radiator or drain antifreeze from hot engine. Doing so could cause injury to 
personnel. 
4. 
REMOVE RADIATOR CAP (1) AND FILL RADIATOR (4) WITH ANTIFREEZE IN ACCORDANCE WITH UNIT 
PMCS, TM 9-2320-363-20-1. 
Change 3 4-143 
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