What is the reason for the slow movement of the excavator?
In engineering construction, the excavator is one of the core equipment, and its working efficiency directly affects the project progress. Recently, there has been a lot of discussion on the Internet about "slow excavator movement", and many users have reported that the equipment is running slowly. This article will cover structured data analysis, common causes, and solutions to help you quickly locate problems and take countermeasures.
1. Statistics of hot topics on the entire network in the past 10 days

| Ranking | hot topics | Amount of discussions (articles) | Associated device issues |
|---|---|---|---|
| 1 | Excavator moves slowly | 12,800+ | Hydraulic system failure |
| 2 | Engine power is insufficient | 9,500+ | Abnormal fuel supply |
| 3 | Joystick response delay | 7,200+ | Control valve stuck |
| 4 | Hydraulic oil temperature is too high | 6,800+ | Cooling system failure |
2. Analysis of the five major reasons why the excavator moves slowly
1. Hydraulic system problems (42%)
Hydraulic oil contamination, pump valve wear or insufficient pressure can cause power transmission efficiency to decrease. Typical manifestations include stuck movements and weakness.
| Failure performance | Possible reasons | Detection method |
|---|---|---|
| All actions are slow | Main pump wear/relief valve failure | Pressure gauge to test system pressure |
| Single action is slow | Distribution valve internal leakage/cylinder seal failure | Action stress test |
2. Insufficient engine power (28%)
A clogged fuel filter, turbocharger failure, or injector problems can cause the engine's power output to drop and be unable to meet the demands of the hydraulic system.
3. Abnormal control signals (accounting for 15%)
Insufficient pilot pressure, sensor failure or poor circuit contact may cause delays in transmission of operating instructions.
4. Wear of mechanical parts (accounting for 10%)
Mechanical losses such as excessive slewing bearing clearance and internal leakage of the traveling motor will directly reduce the action efficiency.
5. Operating environment factors (accounting for 5%)
The hypoxic environment on the plateau or extreme low temperatures can cause equipment performance to drop by 20%-30%.
3. Solution comparison table
| Fault type | Treatment measures | Estimated time | cost range |
|---|---|---|---|
| Hydraulic oil contamination | Replace filter element + hydraulic oil | 2-4 hours | 800-2000 yuan |
| Main pump wear | Replace main pump assembly | 8-12 hours | 15,000-30,000 yuan |
| circuit failure | Inspection of wiring harness + ECU detection | 4-6 hours | 2000-5000 yuan |
4. Preventive maintenance suggestions
1.daily inspection: Hydraulic oil level, coolant status, air filter
2.Regular maintenance: Replace the hydraulic oil filter element every 500 hours, clean the hydraulic oil tank every 2000 hours
3.operating instructions: Avoid long-term overload operation and preheat the hydraulic oil before starting in winter.
From the above structured analysis, it can be seen that the problem of slow excavator movement requires systematic diagnosis. It is recommended to prioritize the working conditions of the hydraulic system and engine, and make a comprehensive judgment based on the equipment's service life and maintenance records. If it is difficult to handle it by yourself, you should contact professional maintenance personnel in time to avoid the expansion of the fault.
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