Main & Connecting Rod Bearings
- Check crankshaft for straightness. If crankshaft is bent more than 0.002" (0.051 mm), crankshaft must be straightened or replaced. Inspect all journals for wear or scoring. Check journals for out-of-round or taper. If journals taper or are out of round more than 0.0004" (0.010 mm), crankshaft journals must be ground for undersize bearings.
- Check bearing clearance using the Plastigage method. If clearance exceeds 0.003" (0.076 mm), crankshaft journals must be ground for undersize bearings.
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