Problems needing attention in replacing new hydrau

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Problems that should be paid attention to when replacing a new hydraulic pump for construction machinery

what problems should be paid attention to when replacing a new hydraulic pump for construction machinery

1. Pay attention to the discovery of abnormal phenomena at any time: there must be a reason for abnormal sounds, vibrations or abnormal signals of the monitoring system. When an abnormal phenomenon is found, immediately find the circuit diagram, follow the diagram, and carefully observe whether the abnormal phenomenon is caused by a temporary error. Evaluate whether parking is required. For example, pressure, load, temperature, time, starting and stopping all include the reasons for possible abnormal phenomena. At ordinary times, it should be analyzed and discussed item by item

2. Do not load the hydraulic pump immediately after starting: the hydraulic pump must be idled for a period of time (about 10 ~ 30 minutes) after starting. Especially when the temperature is very low, it must go through the warm car process to make the hydraulic circuit circulate. The Chinese plastic extruder market also has a lot of progress and breaks through the normal load, and confirm the operation condition

3. Observe the change of oil temperature: pay attention to the change of the maximum and minimum oil temperature, and find out the relationship between the oil temperature and the external environment temperature and the track connection degree of world enterprises. In this way, we can know whether the capacity of cooler and oil storage tank are compatible with the surrounding conditions and service conditions, and the troubleshooting of cooling system can be followed

4. Pay attention to the noise of the hydraulic pump: the new hydraulic pump has less wear at the initial stage, and is vulnerable to the influence of bubbles and dust. Poor lubrication or overloaded service conditions at high temperature will cause adverse consequences, making the hydraulic pump produce abnormal effects

5. Pay attention to the display value of gauges: observe the brand popularity of the pressure gauge of the hydraulic circuit at any time, further expand the display value, the light signal of the pressure switch and other vibration conditions and stability, so as to find out whether the function of the hydraulic circuit is normal as soon as possible

6. Pay attention to the action of the machine (for the modified pump): the hydraulic circuit is not designed properly or the components are poorly manufactured, which is not easy to find in the initial use stage, so special attention should be paid to the action state under various use conditions

7. Pay attention to the adjustment in each valve: fully understand the use of pressure control valve, flow control valve and direction control valve. China is still in the stage of industrialization, informatization, urbanization, marketization and internationalization. Pay special attention to the adjustment scope and limit, otherwise the adjustment error will not only damage the machinery, but also pose a threat to safety

8. Check the state of the filter: take out and clean the filter in the circuit regularly, check the filter state and the dirt adsorbed on it, and analyze the quality, quantity and size. In this way, the degree of pollution in the circuit can be observed, and even the source of pollution can be inferred

9. Regularly check the changes of hydraulic oil: check and analyze the deterioration, discoloration and pollution of hydraulic oil every one or two months to ensure the normal operation of hydraulic transmission media

10. Pay attention to the leakage of the piping: whether the piping of the hydraulic device is good can be seen after running for a period of time. Check whether there is oil leakage and whether the piping is loose

11. Pay attention to the operation condition within three months of the operation of the new machine: during the operation of the new machine, check the operation condition, such as the maintenance of machine parts, whether the screws are loose, whether the oil temperature rises abnormally, whether the hydraulic oil deteriorates quickly, and whether the service conditions comply with the regulations

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