What are the analysis aspects of hydraulic pump maintenance faults?1) Faulty component refers to the component that has malfunctioned. Hydraulic equipment is composed of components as the basic unit, and the failure of a hydraulic system is generally the failure of a specific component. Only after a deep and systematic understanding of the principles, structures, functions, failure mechanisms, etc. of hydraulic components can on-site faults be analyzed and eliminated smoothly. An important feature of hydraulic fault analysis is to infer component damage by examining changes in system performance, with particular attention paid to the various relationships between system performance changes and component damage. 2) Fault parameter refers to the physical quantity that characterizes the loss of function or occurrence of problems in hydraulic devices. If the values of parameters such as pressure, flow rate, leakage rate, speed (rotational speed), force (torque), action order, position, efficiency, vibration, noise, and vacuum degree of the oil suction port exceed the specified range, it indicates that the system has malfunctioned. 3) Fault symptoms refer to the phenomenon where the fault parameters exceed the specified range and are observed by people. It is the external manifestation of the malfunction. 4) Fault information refers to the characteristic information reflecting the internal damage of the hydraulic device. Fault symptoms are obviously fault information. In addition, abnormal phenomena of equipment, alarm signals, system testing analysis conclusions, equipment service life, maintenance status, operation and repair records, etc. are also fault information under certain conditions. Fault information corresponds to faults in some way, and it is the starting point and basis for judging faults. 5) The cause of the malfunction, which is the initial cause of the malfunction. The main issues include oil pollution, mechanical wear and fracture failure, design and manufacturing problems, installation problems, non-compliance with environmental conditions, and human factors. Causal analysis is the main content of specific on-site hydraulic fault analysis, and finding the initial cause is its direct purpose. 6) The scope of the fault refers to the scope of the fault. Some faults are singular, while others are comprehensive and all encompassing. The former is the result of abnormal individual factors, while the latter involves multiple links and parts. Dirty hydraulic oil can cause multiple valve cores in the hydraulic system to jam, and the electromagnet to burn out; Long term use of equipment, wear and tear in multiple areas, resulting in a decrease in system pressure and flow rate, are considered comprehensive failures. 7) Fault intensity refers to the severity of the fault, which is the degree of damage to the hydraulic device. Serious faults have high intensity, while minor faults have the opposite effect. On site, attention should be paid to identifying potential faults and avoiding serious malfunctions. Minor faults often have insufficient information and unclear phenomena, so the difficulty of fault analysis is also high. 8) Deterioration speed refers to the speed at which faults occur and develop. Some faults occur suddenly, while others develop gradually. Fatigue fracture of parts and detachment of wires are sudden faults. For sudden faults, attention should be paid to understanding the warning signs of the fault. For gradual faults, long-term monitoring should be carried out to clarify their development trends. 9) Fault timeliness refers to the sustained condition of the fault's effect. Some faults are temporary, intermittent, and intermittent. For example, pollutants blocked the throttle, and later the oil washed away the pollutants. For example, due to loose installation of the travel switch, the directional valve may not change direction in a timely manner. Other types of faults, which can only be restored to function after repair or replacement of parts, are considered as sexual faults. Temporary faults are caused by external factors, while type faults are directly caused by internal components. 10) Fault frequency refers to the frequency of occurrence of faults. Some faults occur frequently, while others occur occasionally. For frequently occurring faults, effective measures should be taken to eliminate their root causes. Analyzing occasional faults is much more difficult.