Crankshaft: Testing and Inspection

1. Check crankshaft main and pin journals for score, wear or cracks.
2. With a micrometer, measure journals for taper and out-of-round.
- Out-of-round (X - Y) is less than 0.002 mm (0.0001 inch) for the main journal.
- Taper is less than 0.003 mm (0.0001 inch) for the pin journal.





3. Measure crankshaft runout.
- The total indicator reading is less than 0.04 mm (0.0016 inch).