在济南的工程建设中，压路机作为关键设备，其发动机的性能直接影响施工效率和租赁设备的使用寿命。对于出租的压路机而言，发动机保养尤为重要，既能减少故障停机时间，又能保障设备在不同施工环境下的稳定运行，降低维修成本。

　　In the engineering construction in Jinan, the roller is a key equipment, and the performance of its engine directly affects the construction efficiency and the service life of the leased equipment. For rental rollers, engine maintenance is particularly important, as it can reduce downtime due to malfunctions and ensure stable operation of the equipment in different construction environments, thereby reducing maintenance costs.

　　燃油系统的保养是发动机正常运转的基础。压路机发动机多以柴油为燃料，需使用符合标号的清洁柴油，避免因燃油杂质过多堵塞喷油嘴和燃油泵。在济南的多雨季节，应定期排放油箱底部的积水和沉淀物，防止水分进入燃油系统导致部件锈蚀。燃油滤清器需按照使用周期及时更换，滤芯堵塞会影响燃油供给，导致发动机动力下降。加油时要注意清洁，避免将杂质带入油箱，同时油箱应保持一定油量，避免油箱内壁因空荡而锈蚀，影响燃油质量。

　　The maintenance of the fuel system is the foundation for the normal operation of the engine. Road roller engines often use diesel as fuel and require the use of clean diesel that meets the specified standards to avoid clogging of fuel injectors and fuel pumps due to excessive fuel impurities. During the rainy season in Jinan, it is necessary to regularly drain the accumulated water and sediment at the bottom of the fuel tank to prevent moisture from entering the fuel system and causing component corrosion. The fuel filter needs to be replaced in a timely manner according to its usage cycle. If the filter element is clogged, it will affect the fuel supply and cause a decrease in engine power. When refueling, pay attention to cleanliness to avoid bringing impurities into the fuel tank. At the same time, the fuel tank should maintain a certain amount of fuel to prevent the inner wall of the tank from rusting due to empty space, which affects fuel quality.

　　润滑系统的保养能减少发动机部件的磨损。定期检查机油的油位和质量，油位过低会导致润滑不良，过高则会增加发动机负荷，甚至引发烧机油现象。根据压路机的使用强度和环境温度，选择合适粘度的机油，并按照规定周期更换，更换时需将旧机油彻底放净，避免新旧机油混合影响润滑效果。机油滤清器也需同步更换，防止滤芯内的杂质进入润滑系统。对于发动机的气门、活塞等关键部位的润滑点，应定期加注润滑脂，确保活动部件灵活运转，减少机械磨损。

　　The maintenance of lubrication system can reduce the wear of engine components. Regularly check the oil level and quality of the engine oil. A low oil level can lead to poor lubrication, while a high oil level can increase engine load and even cause oil burning. According to the usage intensity and ambient temperature of the road roller, choose the appropriate viscosity of engine oil, and replace it according to the prescribed cycle. When replacing, the old engine oil should be completely drained to avoid mixing new and old engine oil and affecting the lubrication effect. The oil filter also needs to be replaced synchronously to prevent impurities in the filter element from entering the lubrication system. For the lubrication points of key parts such as valves and pistons in the engine, lubricating grease should be regularly added to ensure the flexible operation of moving parts and reduce mechanical wear.

　　冷却系统的保养可避免发动机过热。济南夏季气温较高，压路机长时间作业易导致发动机温度过高，需定期检查冷却液液位，不足时及时添加，且冷却液应使用正规厂家生产的防冻液，避免用水直接替代，防止水垢生成和冬季冻裂。散热器表面要保持清洁，及时清理灰尘、柳絮等杂物，保证散热效果，避免因散热不良导致发动机过热。冷却风扇和水泵的工作状态也需定期检查，风扇皮带松紧度要适宜，过松会影响散热，过紧则易导致皮带磨损断裂，水泵叶轮若出现磨损应及时更换，防止冷却液循环不畅。

　　The maintenance of the cooling system can prevent the engine from overheating. The temperature in Jinan is relatively high in summer, and prolonged operation of the road roller can easily lead to high engine temperature. It is necessary to regularly check the coolant level and add it in a timely manner when it is insufficient. The coolant should use antifreeze produced by regular manufacturers to avoid direct replacement with water and prevent scale formation and winter frost cracking. The surface of the radiator should be kept clean, and dust, willow fluff, and other debris should be promptly removed to ensure effective heat dissipation and avoid engine overheating caused by poor heat dissipation. The working status of the cooling fan and water pump also needs to be checked regularly. The tightness of the fan belt should be appropriate. If it is too loose, it will affect heat dissipation, and if it is too tight, it is easy to cause belt wear and breakage. If the impeller of the water pump is worn, it should be replaced in time to prevent poor circulation of the coolant.

　　进气系统的保养关系到发动机的燃烧效率。空气滤清器是防止灰尘进入发动机的重要屏障，济南部分施工场地扬尘较大，需缩短空气滤清器的检查和更换周期，滤芯表面的灰尘可通过压缩空气吹净，但破损的滤芯必须立即更换，否则灰尘进入气缸会加剧活塞和缸套的磨损。进气管路要检查是否有漏气现象，漏气会导致发动机进气量不足，燃烧不充分，出现动力下降、油耗增加等问题，影响压路机的作业效率。

　　The maintenance of the intake system is related to the combustion efficiency of the engine. The air filter is an important barrier to prevent dust from entering the engine. Some construction sites in Jinan have high levels of dust, so it is necessary to shorten the inspection and replacement cycle of the air filter. The dust on the surface of the filter element can be blown away by compressed air, but damaged filter elements must be replaced immediately, otherwise dust entering the cylinder will aggravate the wear of the piston and cylinder liner. The intake pipeline should be checked for any air leaks, which can lead to insufficient engine intake, insufficient combustion, decreased power, increased fuel consumption, and other problems, affecting the efficiency of the road roller.

　　日常检查与定期维护相结合，能及时发现潜在故障。启动发动机前，检查发动机舱内的管线连接是否牢固，有无松动、破损情况，如油管、水管的接头处是否渗漏。启动后听发动机运转声音是否正常，有无异响，观察仪表盘上的水温、油压等指示灯是否正常。作业结束后，检查发动机表面有无油污、冷却液渗漏痕迹，清理发动机舱内的杂物。对于长期停放的出租压路机，应定期启动发动机，让其怠速运转一段时间，防止部件因长期静置而生锈粘连，同时保持电瓶电量充足。

　　Combining daily inspections with regular maintenance can promptly detect potential faults. Before starting the engine, check whether the pipeline connections in the engine compartment are secure, whether they are loose or damaged, such as whether there is leakage at the joints of oil and water pipes. After starting, listen to the engine running sound to see if there is any abnormal noise, and observe whether the water temperature, oil pressure, and other indicator lights on the dashboard are normal. After the homework is completed, check the surface of the engine for oil stains and coolant leakage marks, and clean the debris in the engine compartment. For long-term parked rental rollers, the engine should be started regularly and allowed to idle for a period of time to prevent components from rusting and sticking due to prolonged standing, while maintaining sufficient battery power.