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工程机械液压系统使用的液压油同其他油品一样,有一定的使用寿命,到了一定的使用寿命,或是由于某原因液压油变质失效,或是在换季保养时需要调正油的粘度(不同的使用温度要求使用不同粘度的液压油),都需要更换液压油。更换液压油,应遵照一定的步骤和方法来进行,否则,不仅不能将液压系统里的旧油更换出来,操作不当还会浪费大量的新油。如有些工程机械使用维修单位,在对机器液压系统换油时,仅将油箱中的旧油更换成新油,
Hydraulic oil hydraulic system used in construction machinery, like other oil products, have a certain service life, to a certain period of service life, or due to some reason deterioration of hydraulic oil failure, or the need to adjust the oil viscosity during the maintenance season (different The use of temperature requires the use of different viscosity of hydraulic oil), need to replace the hydraulic oil. The replacement of hydraulic oil, should follow certain steps and methods to carry out, otherwise, not only can not replace the old oil in the hydraulic system, improper operation will waste a lot of new oil. If some construction machinery use maintenance units, when changing the oil in the machine hydraulic system, only replace the old oil in the tank with new oil,