TM 5-3805-291-23-1
THEORY OF OPERATION - CONTINUED
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OIL COOLERS AND COOLING SYSTEM OPERATION
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427-C1744
1.
General.
a.
Water pump draws coolant directly from radiator. Coolant is pumped through engine oil cooler and transmission
oil cooler. Then, coolant flows into engine block, around cylinder liners, through water directors, and into cylinder
head. Water directors send coolant flow around valves and passages for exhaust gases in cylinder head. Coolant
then goes to front of cylinder head and into water regulator housing. When coolant is inside housing, water regula-
tor controls direction of coolant flow within housing.