Main Bearing Clearance

Check bearings for scoring or wear. Replace if damaged. Clean oil from crankshaft. Check clearance using Plastigage method. Standard main bearing clearance is .0016-.0024" (.040-.060 mm) for all main bearings. Maximum clearance for all models is .004" (.10 mm). If below standard limit, crankshaft journal must be ground to next undersize. Main bearing journals may be ground to the undersizes indicated in table.