Construction machinery replacement new hydraulic pump should pay attention to the problem

Always pay attention to the discovery of anomalies: abnormal sound, vibration or abnormal signal monitoring system, there must be its reason, when an abnormal phenomenon was found, immediately find the circuit diagram, according to every possible means, carefully observe whether the abnormal phenomenon caused by a temporary error. Assessment need not need parking treatment. All pressure, load, temperature, time, start, stop when it includes the possible causes of abnormal phenomena. Usually that should be one by one analysis and discussion. Do not immediately after the start of the hydraulic pump to the load: hydraulic pump to be implemented after the start of a period of no-load idling (about 10 minutes to 30 minutes), especially when the temperature is very low, but also by the vehicle process, the normal hydraulic loop Add load, and confirm the operation status. Observe the oil temperature changes: pay attention to check the maximum and minimum oil temperature changes, and find out the relationship between oil temperature and ambient temperature, in order to know the cooler capacity, storage tank capacity with the surrounding conditions, the use of conditions with each other on the cooling system Troubleshooting can only be tracked. Pay attention to the noise of the hydraulic pump: The new hydraulic pump less wear and tear early, susceptible to the impact of bubbles and dust, poor lubrication or high-temperature conditions of use and so on, will cause adverse consequences, the hydraulic pump abnormalities. Note check the display value of the class: at any time to observe the hydraulic circuit pressure gauge display, pressure switch lights and other vibration conditions and stability to early detection of the hydraulic circuit is functioning properly. Observe the mechanical behavior (for retrofit pumps). Improper design of the hydraulic circuit or poor component manufacture is not easily detectable at the initial stage of use. Special attention should be given to the operating conditions that may be observed under various conditions of use. Pay attention to the adjustment of each valve: fully understand the use of pressure control valve, flow control valve and directional control valve, pay special attention to the adjustment range and limit, otherwise the adjustment error not only damages the machinery, but also poses a threat to safety. Check the status of the filter: The filter in the circuit should be regularly removed and cleaned, and check the status of the filter and the dirt adsorbed on the net. Analyze the quality, quantity and size of the filter so that the degree of contamination in the circuit can be observed and even deduced accordingly The source of pollution. Regularly check the hydraulic oil changes: every one or two months to check the analysis of hydraulic oil deterioration, discoloration and pollution changes in the level to ensure the normal hydraulic transmission medium. Pay attention to the piping part of the leakage: hydraulic device piping good or bad, after running for some time you can see that the prosecution is oil spill, plumbing is loose. Within three months of operation of the new machine should pay attention to operating conditions: during the new machine operation, should grasp the operational status checks, such as maintenance of the machine, the screws are loose, the oil temperature is not abnormal increase, the hydraulic oil is fast Deterioration, check the conditions of use compliance and so on.