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1.故障现象德兴铜矿1辆配置了潍柴WD165.87型发动机和GF420B型离合器的矿用运输车,大修后发生离合器不能分离故障,导致该车不能使用。将离合器解体检查,发现离合器压盘的6个分离杠杆支座中有3个折断,其余3个支座也出现大小不等的裂纹,如附图所示。更换了原厂新离合器总成运行不到1个工作日,该车又发生同样故障。更换其他生产厂家同型号离合器后,损坏情况基本相同。
1. Symptom Dexing Copper Mine equipped with a Weichai WD165.87-type engine and GF420B-type mining truck, after the overhaul of the clutch can not separate the fault, resulting in the car can not be used. The clutch disintegration inspection and found that the clutch pressure plate 6 separate lever bearings in three break, the remaining three bearings also appear cracks of varying sizes, as shown in the figure. Replacement of the original new clutch assembly run less than 1 business day, the car has the same failure. Replacement of other manufacturers with the same type of clutch, the damage is basically the same.