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故障现象一辆北方奔驰8×4自卸车,搭载WD615-50型柴油发动机。据驾驶人反映,该车在更换了飞轮后,无法起动,进行几次推车起动,也均未成功。故障诊断由于故障发生在偏远的矿区,驾驶人只好先找人将发动机拆下,然后拖到修理厂维修。维修人员在拆检发动机的过程中发现曲轴发生前移且有磨损,曲轴止推片脱落及曲轴轴承承孔座边缘磨损等。将气缸体、气缸套、曲轴、
Fault phenomenon A North Benz 8 × 4 dump truck, equipped with WD615-50 diesel engine. According to the driver reflects the car after the replacement of the flywheel, unable to start, several times to start the cart, but also unsuccessful. Troubleshooting Because the fault occurred in a remote mining area, the driver had to first find someone to remove the engine, and then towed to repair shop maintenance. Maintenance personnel dismantling the engine during the discovery of the crankshaft occurred and there is wear and tear, crankshaft thrust plate off and crankshaft bearing seat hole edge wear and so on. The cylinder block, cylinder liner, crankshaft,