Excavator is a large construction machinery, and the hydraulic system is one of its core components, providing power and control signals to ensure the normal operation of the excavator. The hydraulic pump is an important part of the hydraulic system, mainly responsible for compressing the liquid into high-pressure liquid and sending it into the hydraulic cylinder to drive the excavator for various operations. Therefore, proper maintenance and care of the hydraulic pump is one of the key factors to ensure the safe and efficient operation of the excavator.

Regular replacement of hydraulic oil The hydraulic pump compresses the liquid to drive the hydraulic cylinder, so the quality of the liquid directly affects the working efficiency and service life of the hydraulic pump. Therefore, regular replacement of hydraulic oil is an important measure to maintain the hydraulic pump. Generally, the hydraulic oil should be replaced regularly after the machine has been running for a period of time. Different models and brands of excavators may have different timing and frequency of hydraulic oil replacement, and specific maintenance recommendations can be found in the excavator’s user manual or by contacting the dealer.

Check the quality of hydraulic oil In addition to regular replacement of hydraulic oil, it is also necessary to check the quality of the hydraulic oil. The quality of hydraulic oil may be affected by factors such as moisture, dust, foreign objects, pollutants, etc., all of which may cause the performance of the hydraulic pump to decline or even fail. Therefore, when replacing hydraulic oil, it is necessary to check whether the quality of the oil meets the specified requirements. If it is found that the oil has deteriorated or been contaminated, it needs to be replaced in a timely manner.

Regular cleaning of the hydraulic pump Excavators often operate in harsh environments such as dust and sand, and particles in these environments can easily enter the inside of the hydraulic pump, causing blockage and wear of the pump’s components. Therefore, regular cleaning of the hydraulic pump is very important. When cleaning the hydraulic pump, it is necessary to first drain the liquid from the pump, then use a cleaning agent to clean it, rinse it with clean water, and finally add the liquid to the pump.

Regular inspection of the hydraulic pump’s sealing performance The seals inside the hydraulic pump are one of its key components, and their sealing performance is related to the working efficiency and service life of the hydraulic pump. Therefore, regular inspection of the sealing performance of the hydraulic pump is very important. When checking the sealing performance of the hydraulic pump, pay attention to the following:

Check whether there is any leakage in the hydraulic pump, especially whether there is any oil leakage at the shaft seal of the pump. Check the wear of the seals. If the seals are found to be worn, they need to be replaced in a timely manner. Check whether the compression force of the seals is sufficient. If it is insufficient, it needs to be adjusted.

Regular inspection of the hydraulic pump’s various components The hydraulic pump is composed of multiple components, such as gears, racks, pump casings, etc. Each component may experience wear and failure. Therefore, regular inspection of the wear and working status of the various components of the hydraulic pump is an important step in maintaining the hydraulic pump. If a certain component is found to be worn or failed, it needs to be replaced in a timely manner.

In summary, the hydraulic pump is one of the core components of the hydraulic system of the excavator, and proper maintenance and care of the hydraulic pump is one of the key factors to ensure the safe and efficient operation of the excavator. When maintaining the hydraulic pump, it is necessary to regularly replace the hydraulic oil, check the quality of the hydraulic oil, clean the hydraulic pump, check the sealing performance of the hydraulic pump, and inspect the various components of the hydraulic pump.