1) The surface quality of the diesel generator bearings needs to be checked. If there is any damage, ablation or abnormal wear, a new bearing should be replaced.
2) To ensure that the generator bearings fit tightly with the bearing seat and will not shift when the crankshaft rotates, the free expansion of the generator bearings needs to be checked. The bearings must have a certain amount of free expansion.
3) Inspection of the generator bearing positioning cam. The bearing positioning cam is a bearing positioning structure that prevents the bearing from rotating or shifting during operation. If the positioning cam is damaged or deformed, the bearing may be misaligned and needs to be replaced.
4) Inspection of the diesel generator bearing clearance The bearing clearance refers to the part of the bearing that exceeds the bearing seat during installation. Its inspection and requirements.
5) Checking the axial displacement of the engine crankshaft is an important indicator for evaluating the wear of the crankshaft thrust surface and thrust bearing. The ideal range of crankshaft axial displacement is between 0.10 and 0.30 mm. If it exceeds or is equal to 0.355 mm, the thrust bearing needs to be replaced and the crankshaft thrust surface may need to be ground.
