(1)定期更换液压油。过滤性能良好的液压油含有多种添加剂，可防止机油在挖掘机维护过程中变质。然而，这些添加剂会在一段时间后失效。因此，油应该定期更换，以确保添加剂发挥作用。滤清器只能从机油中吸收有限的灰尘颗粒和其他杂质。机器每1000个工作小时更换一次液压油箱回油滤清器。更换液压油时，清洁液压油箱的吸油过滤器，以保持系统清洁。更换液压油滤清器时，请检查滤清器底部是否有金属颗粒或碎屑；如果有铜或铁屑，液压泵、液压马达或阀门可能会损坏或将会损坏；如果有橡胶，则液压缸密封件损坏。
(1) Change the hydraulic oil regularly. The hydraulic oil with good filtration performance contains a variety of additives, which can prevent the oil from deteriorating during the maintenance of the excavator. However, these additives will fail after a period of time. Therefore, the oil should be changed regularly to ensure that the additive works. The filter can only absorb limited dust particles and other impurities from the oil. Hitachi ZX series (medium) machines change the hydraulic oil tank return filter every 1000 working hours. When changing the hydraulic oil, clean the oil suction filter of the hydraulic oil tank to keep the system clean. When replacing the hydraulic oil filter, please check whether there are metal particles or debris at the bottom of the filter; if there are copper or iron chips, the hydraulic pump, hydraulic motor or valve may be damaged or will be damaged; if there is rubber, the hydraulic cylinder seal is damaged.
(2)定期排放油箱内的污物，定期向油箱内排放水和沉淀物。油中的杂质很重要，但在整个液压系统中定期更换液压油也很重要。这是有害杂质(如系统杂质和氧化液压油)的一个可靠方法。然后再次向液压系统中添加日立的清洁液压油。请每250个工作小时排空一次油箱。
(2) Regularly drain the dirt in the tank, and regularly drain water and sediment into the tank. It is important to remove the impurities in the oil, but it is also important to change the hydraulic oil regularly in the whole hydraulic system. This is a reliable method to remove harmful impurities such as system impurities and oxidized hydraulic oil. Then add clean hydraulic oil recommended by Hitachi to the hydraulic system again. Please drain the tank every 250 working hours.
(3)如果液压油被污染，特别是当泵或油缸和马达损坏时，要更换并清洗所有液压油。向油箱添加液压油或读取液压油时，保持液压挖掘机的工作区域清洁，并确保滤清器箱盖周围的区域清洁。仅使用干净的漏斗或容器。请勿将灰尘带入系统。维护液压系统时，只能使用干净的塑料塞来密封管道末端。维护液压部件时，工作台一定要干净。检查工具的使用，它们也应该很干净。
(3) If the hydraulic oil is contaminated, especially when the pump or cylinder and motor are damaged, replace and clean all hydraulic oil. When adding hydraulic oil to the tank or reading hydraulic oil, keep the working area of the hydraulic excavator clean and make sure that the area around the filter box cover is clean. Use only clean funnel or container. Do not bring dust into the system. When maintaining the hydraulic system, only use clean plastic plugs to seal the end of the pipe. When maintaining hydraulic components, the worktable must be clean. Check the use of tools, they should also be clean.
The above are three ways to keep the hydraulic system clean for rental of the extended boom excavator. I hope it will help you. If you want to know more, please click our //www.wondgo.com Website.
