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Ford Truck
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1999
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F 550 4WD Super Duty V8-7.3L DSL Turbo VIN F
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Testing and Inspection
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Component Tests and General Diagnostics
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Fan Clutch Test
Fan Clutch Test
1.
Spin the
fan blade
by hand. Alight resistance should be felt. If there is no resistance or very high resistance, the minimum and maximum fan speeds must be checked.