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 TM 5-2410-237-23
COOLING SYSTEM THEORY OF OPERATION - CONTINUED
0064 00
COOLING SYSTEM COMPONENTS
1.
Water Pump.
a.
The centrifugal-type water pump has two seals. One prevents leakage of water and the other prevents leakage of
lubricant.
b. An opening in the bottom of the pump housing which is plugged by foam allows any leakage, at the water seal or
the rear bearing oil seal, to be detected by the mechanic.
2.
Fan. The fan is driven by two V-belts, from a pulley on the crankshaft. Belt tension is adjusted by adjusting the alterna-
tor group.
3.
Coolant Flow Switch. The coolant flow switch is installed in the outlet side of the engine oil cooler. It is part of the
engine warning system. When the force of the coolant against the paddle of the switch gets too low, the switch closes
and activates the system.
END OF WORK PACKAGE
0064 00-2
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