16.1 Deburr the edge of the oil hole
2. Check the condition of the shaft journals. Measure the diameter of the necks in several places and determine the taper and ovality (photo). Check the runout of the crankshaft by installing in prisms.
16.2 measuring the diameter of the crankshaft journals
3. If there are damages on the shaft journals, and also if the ovality, taper and wear of the journals exceed the established limits, the shaft should be reground and the main and connecting rod bearings should be replaced with repair ones.
4. If a deep groove has formed on the necks for the oil seals from the working edge of the oil seal, there are scratches or other damage, then it is recommended to replace the crankshaft.