What's the problem if the excavator has no power?
Recently, the discussion about construction machinery has been very popular across the Internet, especially the issue of excavator failure has become the focus of the industry. This article combines hot topics and hot content in the past 10 days to analyze the common problem of "the excavator has no power" and provides structured data for readers' reference.
1. Common reasons why the excavator has no strength
According to discussions and expert opinions across the Internet, the lack of power in the excavator may be caused by the following reasons:
| Cause classification | Specific performance | Proportion |
|---|---|---|
| Hydraulic system problems | Insufficient/contaminated hydraulic oil, insufficient pump pressure, valve block failure | 45% |
| engine problems | Fuel system failure, turbocharger damage, air filter clogged | 30% |
| Operational issues | Wrong mode selection and improper operation | 15% |
| Other mechanical issues | The traveling motor is damaged and the main control valve is faulty. | 10% |
2. Analysis of recent popular fault cases
1.Hydraulic oil contamination causes weakness: An excavator at a construction site became obviously weak after working continuously for 300 hours. After inspection, it was found that a large amount of metal debris was mixed in the hydraulic oil. After replacing the oil and filter element, it returned to normal.
2.Turbocharger failure: The power of a certain brand’s 2018 excavator dropped when operating at plateau. The test found that the supercharger bearing was worn, resulting in insufficient pressure. After replacement, the power increased significantly.
3.Improper pressure adjustment of main pump: Many users reported that the power of the newly purchased excavator was insufficient, and the performance improved significantly after professional debugging of the main pump pressure.
3. Fault diagnosis process
| step | Check content | Tools/Methods |
|---|---|---|
| first step | Check hydraulic oil level and quality | Visual inspection, oil tester |
| Step 2 | Test system pressure | Pressure gauge, diagnostic instrument |
| Step 3 | Check engine condition | OBD diagnosis, smoke detection |
| Step 4 | Troubleshoot circuit and control problems | Multimeter, computer diagnostics |
4. Suggestions on preventive measures
1.Regular maintenance: Replace the hydraulic oil and filter element in strict accordance with the maintenance intervals recommended by the manufacturer.
2.Correct operation: Avoid long-term overload operation and pay attention to the selection of working mode.
3.daily inspection: Check the oil level and filter element status before operation, and deal with any abnormalities in time.
4.Professional maintenance: Complex faults should be handled by professional technicians to avoid secondary damage caused by improper maintenance.
5. Ranking of recent popular repair parts
| Ranking | Accessory name | Replacement frequency | average price |
|---|---|---|---|
| 1 | Hydraulic oil filter element | high | 200-500 yuan |
| 2 | Main pump repair kit | middle | 800-1500 yuan |
| 3 | turbocharger | middle | 3000-8000 yuan |
| 4 | Main control valve | Low | 5,000-12,000 yuan |
From the above analysis, it can be seen that the problem of lack of power in the excavator needs to be systematically investigated and solved. It is recommended that when users encounter similar problems, they should follow the scientific diagnosis process to investigate step by step, or contact professional maintenance personnel in time to ensure that the equipment remains in good working condition.
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