| 1. Wash and dry the solvent crankshaft. Carefully clean the oil passages in the crankshaft. |
| 2. Verify that the crank pin traces of uneven wear, cracks, scuffing and pitting (holes). |
| 3. Wear crankpin accompanied by a distinct metallic clatter the engine running (especially well tapped by pressing a pedal throttle when driving at low speed) and a noticeable drop in oil pressure. |
| 4. Worn main bearings accompanied by a strong vibration motor and a hollow rumbling sound that increases with increasing engine speed, as well as a notable drop in oil pressure. |
| 5. Check the roughness of the necks of the crankshaft, having a finger on them. Any roughness (which manifests itself simultaneously with obvious signs of wear of main and connecting rod bearings) indicates the need for regrinding necks of the crankshaft, or its replacement. |
| 6. Check the crankshaft run-out in the middle of installing the crankshaft in the prismatic support. If the runout exceeds the norm, the crankshaft must be replaced. |
| 7. If the crankshaft journals pereshlifovyvalis, remove the burrs around the lubrication holes. |
| 8. Measure the diameter of the root and the crank pins and compare the results with the regulations. Determine ovality necks, which measure the diameter at several points around the circumference of the neck. Check the taper, measured the diameter opposite cheeks around necks. Compare the results with the regulations. |
| 9. Check the condition of sealing the necks of the crankshaft. If these journals there is a deep groove formed in the place of working edges of the gland, consult a specialist, as required, or repair or replace the crankshaft. |
| 10. There are two repair sizes for main bearing (with decreasing diameter of 0.25 and 0.5 mm) and three repair sizes for the connecting rod bearing (0.08, 0.12 and 0.25 mm). If repairs are commercially available liners and wear of the necks of the crankshaft exceeds the standard so that further repair is not possible, it is advisable to purchase refurbished and install the crankshaft bearings repair. About what actions to take further consult in car-care center service or a specialist. |
