TM 9-2320-365-101-17. COOLING SYSTEM (CONT)Figure 1-12. Cooling System (Cont)(4) The engine fan (9), with pneumatic fan clutch (10), is activated by the watertemperature sensor (11). Whenever this sensor detects a high engine temperaturecondition, air pressure is removed from the fan clutch and the engine fan is engaged.(5) Positioning the radiator fan off switch (12) to the on position keeps the engine fanfrom engaging.1-38 Change 1
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