装载机的发动机出现异响时，可根据技术状况不同、发出的声音不同、各配合副本身的工作条件及空间位置不同、响声发生的部位及声音特征、以及响声出现的时机和变化规律等，来判断响声的种类和可能的原因。Shandong loader engine abnormal sound, according to different technical conditions, the sound of different and different, with each side itself working conditions and spatial location and sound characteristics, sound and sound of the timing of occurrence and variation, to determine the type of sound and possible reasons.

1.气门敲击。在气缸盖罩部位有清脆的金属敲击声，当柴油机在中、低速变速时，敲击声更为明显、清脆。出现有规律的“哒、哒”声，主要是由于气门间隙过大造成的。柴油机温度升高或用“断缸”方法试验时，响声均不发生变化。Valve knock. When the diesel engine is in the middle and the low speed speed change, the sound is more obvious and the ringing is more obvious when the diesel engine is in the middle and the low speed speed change. The laws of the "Da, Da" sound, mainly due to the valve clearance is too large. When the temperature of the diesel engine is increased or the "broken cylinder" method is used, the noise will not change.

2.活塞销响?；钊斓闹饕蚴腔钊?、连杆衬套或活塞销座孔磨损，导致配合间隙过大，活塞销在运动中发生撞击而发出响声。活塞销响的特点为：从怠速转入中速运转时，响声比较明显；声响的周期（频率）随发动机转速的升降变化。Piston pin ring. Piston pin ring is the main cause of the piston pin, connecting rod bushing or piston pin seat hole wear, resulting in the clearance is too large, piston pin in the movement of the impact of the sound. The characteristics of piston pin ring from the idle speed to turn when the noise is obvious; the sound cycle (frequency) with the change of engine speed.

3.活塞敲缸响?；钊酶紫斓某＜妥钪饕脑蚴且蛭钊肫妆谀ニ?，配合间隙超过一定的限度，活塞在上下运动的过程中发生摆动，敲击气缸壁而发出当、当的响声。有时，配合间隙虽然未超过限度，若连杆弯曲变形也会发响。Piston ring. The piston cylinder knocking the common and the most important reason is because the piston and the cylinder wall wear, with the gap exceeds a certain limit, the piston swing in the process of moving up and down, and when issued against the cylinder wall, when the sound of. Sometimes, although the gap does not exceed the gap, if the link bending deformation will be issued.

4.连杆轴承响。连杆轴承响的主要原因是轴颈与轴承磨损，轴承合金层烧坏、脱落、轴承盖（瓦盖）松动，轴承转动（轴瓦走外圆），做功的瞬间相互撞击而发响。Connecting rod bearing ring. The main reason is the connecting rod bearing ring shaft and bearing wear, bearing alloy layer burned off, bearing cap (Wa Gai) loose, the rotation of the bearing (bearing go round), the moment of collision between the work and sound.

5.曲轴轴承响。曲轴轴承响的原因与连杆轴承响相同，其特点为：响声较敲缸、活塞销和连杆轴承响沉闷。猛加油或突然减速时，响声明显清晰；如果是轴承合金层烧坏、脱落，柴油机还会抖动。Crankshaft bearing ring. Crankshaft bearing ring and connecting rod bearing ring the same reason, its characteristics are: sound, piston pin and connecting rod bearing ring boring. Fierce refueling or sudden deceleration, the sound is clear; if the bearing alloy layer is burned off, the diesel engine will shake.

6.凸轮轴轴承响。凸轮轴轴承响最常见和最主要的原因是凸轮轴与轴承（轴套）磨损，配合间隙过大；轴承合金层烧坏、脱落或轴承外径与座孔轴承“走外圆”。Camshaft bearing ring. Camshaft bearing ring for the most common and the most important reason is the cam shaft and the bearing wear (sleeve), with the gap is too large; bearing alloy layer burned off or the outer diameter of the bearing hole of the bearing seat and go round "".

由此可见，山东装载机的柴油机异响多有配合间隙调整不当及润滑不良等有关。因此，应对运行中的机器定期检查配合间隙和保持良好的润滑。对于出现异响的柴油机，应及时予以排除后再使用，以防磨损加剧，造成机械事故。It can be seen that the diesel engine of the Shandong loader has many problems, such as the improper adjustment of the clearance and the bad lubrication. Therefore, to deal with the operation of the machine regularly check with the gap and maintain good lubrication. For the emergence of abnormal noise of the diesel engine, should be promptly removed after use, in case of increased wear, resulting in mechanical accidents.