发动机出现拉缸的原因：
Reason for engine cylinder pulling:
1、发动机冷却系统因为泄漏、缺水，不能及时补充导致发动机过热;
1. The engine cooling system cannot be replenished in a timely manner due to leaks or water shortages, resulting in engine overheating;
2、全自动搅拌车发动机机油太低，导致气缸密封性、润滑功能丧失;
2. The engine oil of the fully automatic mixer truck is too low, resulting in the loss of cylinder sealing and lubrication function;
3、活塞环断裂，刮伤缸壁;
3. The piston ring is broken and scratches the cylinder wall;
4、活塞销卡圈脱落，刮伤缸壁;
4. The piston pin circlip falls off and scratches the cylinder wall;
5、活塞环因为积炭卡死在槽内，密封作用丧失;
5. The piston ring is stuck in the groove due to carbon deposit, and the sealing function is lost;
6、活塞销外出，刮伤缸壁;
6. The piston pin goes out and scratches the cylinder wall;
7、气缸内进入异物;
7. Foreign objects entering the cylinder;
8、活塞和缸壁配合间隙过小;
8. The clearance between the piston and cylinder wall is too small;
9、活塞销装配过紧，导致变形;
9. The piston pin assembly is too tight, causing deformation;
10、活塞热变形严重或烧顶熔化;
10. Severe thermal deformation or burning and melting of the piston;
11、全自动搅拌车发动机长时间高速或超负荷运转。
11. The engine of the fully automatic mixer truck operates at high speed or overload for a long time.
怎么预防发动机拉缸?
How to prevent engine cylinder pulling?
1、新机和大修后的发动机，需要磨合;
1. New and overhauled engines require running in;
2、维修发动机要确保;
2. Ensure safety when repairing the engine;
3、行驶时注意观察发动机水温。水温正常的温度是70℃～95℃，避免发动机过热。现在天气变冷，建议大家开车前预热。
3. Pay attention to the engine water temperature while driving. The normal temperature for water temperature is 70 ℃~95 ℃ to avoid engine overheating. The weather is getting colder now, I suggest everyone preheat before driving.
4、合理使用全自动搅拌车发动机，不要超负荷作业
4. Reasonably use the engine of a fully automatic mixer truck and avoid overloading operations
5、定期更换空气滤清器
5. Regularly replace the air filter
6、保证润滑系统正常工作
6. Ensure the normal operation of the lubrication system
7、及时检查发动机机油油面高度，保证不缺机油。
7. Check the engine oil level in a timely manner to ensure that there is no shortage of oil.
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