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![]() TM 9-2320-363-20-2 
DRAIN AND FILL COOLING SYSTEM 
This task covers: 
a. Drain 
b. Fill 
INITIAL SETUP 
Tools and Special Equipment: 
General Safety Instructions: 
Shop Equipment, SC 4910-95-CL-A72 
Tool Kit, SC 5180-90-CL-N26 
WARNING 
Do not open radiator cap or 
Materials/Parts: 
drain antifreeze from hot 
engine. Doing so could cause 
Antifreeze 
Appendix C, Item 4 
injury to personnel. 
References: 
TM 9-2320-363-20-1 
DRAIN 
WARNING 
Do not open radiator cap or drain antifreeze from hot engine. 
Doing so could 
cause injury to personnel. 
NOTE 
It may only be necessary to lower antifreeze level for replacement of cooling 
system components.  If so, only open draincocks at or just below level of 
components being removed. 
1. 
REMOVE RADIATOR CAP (1) AND OPEN DRAINCOCK (2). 
Change 3 4-141 
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