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1978年国家物资总局调给我们一批斯柯达MTS24型自卸车,在正常行驶不到二万公里时(有的行驶不到二千公里),均出现发动机各缸活塞环有不同程度的不正常磨损。特别是第一缸,缸套、活塞与活塞环均磨损严重,缸套内径磨损达0.74～1.03毫米;第一道活塞环均断碎,致使拉缸严重;活塞头部出现严重熔着磨损;裙部销座膨胀,致使裙部熔着磨损、变形。由于第一缸的严重磨损,致使其他缸及轴瓦也不同程度的磨损和刮伤。见图1、2、3、4磨损情况照片。
1978 State Administration of Supplies transferred to us a batch of Skoda MTS24 dump truck, less than 20000 km in normal driving (some less than 2000 km), there are various degrees of cylinder piston ring have abnormal wear and tear . In particular, the first cylinder, cylinder liner, piston and piston rings are severely worn, cylinder liner diameter wear of 0.74 ~ 1.03 mm; the first piston ring are broken, resulting in severe pull cylinder; piston head severe melting wear; Skirt pin seat expansion, resulting in skirts wear melting, deformation. As the first cylinder of the serious wear and tear, resulting in other cylinder and bearing also varying degrees of wear and tear. See Figure 1,2,3,4 wear photos.