As an important mechanical equipment in engineering construction, the normal operation of the hydraulic pump of the excavator is crucial. When the hydraulic pump fails, timely replacement is a key step to ensure the normal operation of the excavator. The following is a detailed process of replacing the hydraulic pump of the excavator in the form of an article, and it will also involve some related content of second-hand dealers.
Before starting to replace the hydraulic pump, it is necessary to first make it clear that the required new hydraulic pump model matches the excavator. This can be determined by consulting the technical manual of the excavator or consulting professionals. At the same time, prepare necessary tools such as wrenches, screwdrivers, cranes, etc.
Perform some simple operations such as lifting and digging, and observe whether the excavator's movements are smooth and normal, and whether the pressure of the hydraulic system is stable. The role of second-hand dealers should be mentioned here. Some users may consider purchasing second-hand excavators or related accessories, including hydraulic pumps, from second-hand dealers. Second-hand dealers usually perform a certain degree of inspection and repair on the acquired second-hand excavators. If problems are found in the hydraulic pump, they need to evaluate the cost and feasibility of replacing or repairing the hydraulic pump. During the acquisition process, second-hand dealers can rely on their rich experience and expertise to judge the degree of failure of the hydraulic pump and determine whether it is worth replacing or repairing. If they decide to replace the hydraulic pump, they need to choose a new hydraulic pump with reliable quality and stable performance to ensure that the second-hand excavator can operate normally in subsequent sales and provide customers with reliable equipment.
When selling second-hand excavators, honest second-hand dealers will provide customers with detailed information about the equipment, including whether important parts such as the hydraulic pump have been replaced. If the hydraulic pump has been replaced, they should inform customers of the time of replacement, the brand and model of the hydraulic pump used, and other related information, which can increase customers' understanding and trust in the equipment. At the same time, second-hand dealers can also introduce the advantages of the new hydraulic pump to customers, such as brand awareness, performance characteristics, warranty period, etc., to enhance customers' confidence in the equipment. In addition, some second-hand dealers may also provide some additional services, such as recommending professional maintenance personnel to customers or providing a certain period of after-sales guarantee to ensure that customers can use the equipment normally after purchasing a second-hand excavator.
However, when purchasing related equipment from second-hand dealers, you also need to pay attention to the following points:
Choose a second-hand dealer with good reputation and good reputation, and learn about it through online evaluation, peer recommendation, etc.
Ask to see the detailed maintenance records and inspection reports of the second-hand excavator to understand the historical status of the equipment.
Carefully check the appearance of the used hydraulic pump to see if there are obvious signs of wear, damage or oil leakage.
If possible, you can conduct on-site tests to observe the working condition of the hydraulic pump.
In short, replacing the hydraulic pump of an excavator requires certain skills and experience. If you are not familiar with the operation, it is recommended to ask a professional maintenance personnel to do it. Second-hand dealers play an important role in the second-hand excavator market. Their professional knowledge and service quality will also affect the buyer's decision-making and user experience. When dealing with second-hand dealers, buyers should be cautious and fully understand the relevant information to ensure their own interests.
Precautions:
1. Whether disassembling or installing the hydraulic pump, you must handle it with care during operation to avoid excessive force that may cause damage to key components.
2. The removed parts should be properly kept to avoid loss or damage. During installation, ensure that each component is clean to prevent impurities from entering the hydraulic system.
3. After the new hydraulic pump is installed, do not add load immediately. It should be idling without load for a period of time (about 10 minutes to 30 minutes). Especially when the temperature is low, the hydraulic circuit should be allowed to circulate normally before adding load and confirming the operating condition.
4. Always pay attention to the changes in oil temperature, check the highest and lowest oil temperatures, and understand their relationship with the external ambient temperature, so as to determine whether the cooler capacity and oil tank capacity match the use conditions, which is very important for troubleshooting cooling system failures.
5. Pay attention to the noise of the hydraulic pump. The new hydraulic pump has less initial wear, but is easily affected by bubbles and dust, and may make abnormal sounds when it is poorly lubricated at high temperatures or overloaded.
6. Frequently observe the vibration and stability of the pressure gauge display value, pressure switch light, etc. of the hydraulic circuit to find out whether the hydraulic circuit is working properly as soon as possible.
7. For some modified excavators, pay special attention to observing their mechanical movements under various use conditions, because improper hydraulic circuit design or poor component manufacturing may not be easy to detect in the initial use stage.
8. Fully understand the use of pressure control valves, flow control valves and directional control valves, and pay special attention to the adjustment range and limit, otherwise incorrect adjustment may not only damage the machinery, but also pose a threat to safety.
9. Check the status of the filter regularly, remove the filter for cleaning, and check the status of the filter screen and the adsorbed dirt, so as to analyze the degree of pollution in the circuit and even infer the source of pollution.
10. Check the deterioration, discoloration and pollution degree of the hydraulic oil every one to two months to ensure the normal operation of the hydraulic transmission medium.
11. Pay attention to the condition of the piping of the hydraulic device. After running for a period of time, check whether there is oil leakage and loose piping.
12. If it is a newly replaced hydraulic pump, pay special attention to its operating conditions within the first three months of operation, including the maintenance of the machine parts, whether the screws are loose, whether the oil temperature rises abnormally, whether the hydraulic oil deteriorates rapidly, etc., and check whether the use conditions meet the regulations.
If you need to buy an excavator bucket, there are many ways to choose from no matter where you are in the world. You can contact the excavator manufacturer or its authorized dealer directly. They can usually provide original or adapted buckets, which can ensure that the bucket is fully matched with the specific model of excavator, and the quality and compatibility are better guaranteed. Large-scale construction machinery parts markets are also a good choice. In the global construction machinery parts market, there are many suppliers who provide buckets of various types and specifications. You can search and compare such markets in your local or surrounding areas to choose the right bucket. Many e-commerce platforms or professional websites in the construction machinery industry also have sales information for buckets. These platforms bring together suppliers from different regions, providing a wide range of choices for global users.
Second-hand dealers are also a channel for purchasing excavator buckets. They usually have some second-hand buckets to choose from. However, when dealing with second-hand dealers, you need to pay attention to the following points:
1. Carefully check the wear and quality of the bucket. Check whether the bucket teeth are severely worn, whether the bucket body has cracks or deformation, etc.
2. Understand the use history of the bucket. Ask the second-hand dealer about the previous use environment and operation type of the bucket in order to evaluate its remaining service life and applicability.
3. Confirm the credibility and reputation of the second-hand dealer. You can understand its reliability by checking other customers' comments and consulting industry insiders.
4. For important or high-value projects, it is recommended to choose second-hand buckets with caution to avoid affecting the progress and quality of the project.
When buying a new or used excavator bucket, you should also pay attention to the following:
1. Determine the type, specification and size of the bucket you need to ensure that it matches your excavator model and operating requirements. Different types of buckets are suitable for different operations, such as standard buckets for general earthwork excavation and loading; rock buckets are used for excavating hard rocks, etc.
2. Pay attention to the quality and material of the bucket, and choose products that are wear-resistant and high-strength. For example, buckets made of high-strength steel are usually more durable.
3. Compare the prices, quality and after-sales services of different suppliers. Don't just look at the price and ignore the product quality and after-sales guarantee.
4. If possible, you can check the actual pictures, detailed parameters and reviews of other users of the product to better understand the product performance.
5. Understand the supplier's after-sales service policy, including installation instructions, warranty period, etc.
6. When installing a new bucket, follow the correct operating procedures to avoid damage or safety problems caused by improper installation. For example, when hitting the pin with a hammer, be sure to wear goggles, hard hats and other protective gear to prevent metal chips from flying into your eyes and causing injury; when removing the bucket, place the bucket stably; when removing the pin, do not stand under the bucket, do not put any part of your body under the bucket, and be careful not to hurt your hands; when aligning the hole, do not put your fingers into the pin hole.
7. If you want to replace the bucket, stop the machine on a solid and flat ground. When connecting, make clear signals to each other and operate carefully with relevant personnel.
8. For some buckets with special functions or structures, such as screening buckets, understand their operation methods and precautions to give full play to their performance.
In short, buying an excavator bucket requires comprehensive consideration of multiple factors, choosing the right purchase channel and product, and paying attention to relevant precautions to ensure that the bucket can meet your operating needs and be used safely and reliably.