F 150 4WD Pickup V8-4.6L SOHC VIN W (1998)
Crankshaft Main Bearing: Testing and Inspection
1. Inspect bearings for the following defects. Possible causes are shown:
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cratering-fatigue failure (A).
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spot polishing-improper seating (B).
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scratching-dirty (C).
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base exposed-poor lubrication (D).
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both edges worn-journal damaged (E).
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one edge worn-journal tapered or bearing not seated (F).
