1. Clean crankshaft solvent and dry it with compressed air. |
2. Inspect the crankshaft bearings for signs of wear, scratches, corrosion or cracks. |
3. Remove the bulges around the oil holes and clean the holes with solvent. |
4. Inspect the crankshaft for cracks or other damage. |
| 5. Measure the diameters of the main and connecting rod bearings. To identify the taper and ovality, measure the diameter of each of the bearing at several points. If necessary, the crankshaft to be treated in a specialized workshop. |
6. Check the cervical glands of the crankshaft for signs of wear or damage. If the seals have wiped flutes on necks, the new seals will leak oil. |
7. Measure the length of the thread of each bolt main bearing caps. In four-cylinder engines, bolt must be no longer than 67.5 mm, and a six-cylinder engine is not longer than 136 mm (long bolts) and 119 mm (short bolts), otherwise the screws must be replaced. |