Operation CHARM
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Ford Truck
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1998
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Explorer 2WD V6-245 4.0L VIN X SFI
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Cylinder Head Assembly
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Testing and Inspection
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Valve Train Analysis
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Valve Spring Retainer and Retainer Keys
Valve Spring Retainer and Retainer Keys
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Check for proper seating of the
valve spring retainer
key on the valve stem and in the valve spring retainer.