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Ford
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2008
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F 150 4WD V8-4.6L
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Repair and Diagnosis
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Transmission and Drivetrain
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Differential Assembly
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Testing and Inspection
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Component Tests and General Diagnostics
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Driveline System
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Axle Vent
Axle Vent
Axle Vent
A plugged vent will cause excessive seal lip wear due to internal pressure buildup. If a leak occurs, check the vent. If the vent cannot be cleared, install a new vent.