It is a common machine fault that the excavator stalls when it is working. The engine speed drop refers to the failure of the engine speed drop during the excavator operation. A serious speed drop of more than 300 revolutions is likely to cause the excavator to suddenly shut down at this time. So, what's the matter with the excavator stalling? Here are several possible reasons.
Reduction of engine power
It is recommended to check the low-pressure oil circuit, high-pressure oil circuit, intake and exhaust system, as well as the cylinder compression force.
1. In fact, you can also see the smoke color. If there is no black smoke after the speed drop, it means that the fuel supply is low, resulting in low engine power.
2. If there is black smoke, it means that the combustion is not good. Maybe one is poor fuel atomization, and the other is insufficient air intake.
Excessive hydraulic power
Check the hydraulic pressure. If the pressure is normal, the flow may be too large. The most critical element to adjust the flow is the regulator. For machines that have been used for a long time, the regulator may have problems.
When the air intake system leaks or is blocked
It will cause insufficient air supply to the engine, cause insufficient fuel combustion, and cause speed drop and black smoke.
fuel system
The fuel supply circuit pipe joint is loose or the pipeline is broken, causing fuel leakage or foreign matter blockage, resulting in insufficient fuel supply. In addition to speed loss, it may also cause flameout.
The above briefly summarizes several common causes of the excavator stalling. Before dealing with the fault, you must determine the cause of the fault through inspection and measurement, so as to solve the problem accurately and quickly. If you can't solve the excavator fault yourself, you can find a professional excavator maintenance master to help you solve the excavator fault.
