E 250 3/4 Ton Van V6-4.2L VIN 2 (1997)
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)
