I believe that many people have encountered the failure of the excavator to start. If the construction site with a tight schedule will be repaired at one and a half times, the boss will be killed! Recently, a northeast machine owner encountered such a situation. During the excavation operation, the engine suddenly stopped and could not be started. The construction worker urged to hurry, and the owner quickly asked the maintenance worker to carry out maintenance.
cause of issue
1. The speed of the starter motor of the excavator is too low, to ensure that the normal start and start speed of the Komatsu EC55 excavator engine should be maintained at about 150R / min.
2. The engine oil supply is insufficient and the oil supply timing of the excavator is incorrect.
3. The timing relationship of the excavator is chaotic (the timing of gas distribution and oil supply is not correct).
4.The compressor is not working properly, and the excavator engine cannot be started smoothly.
5.The nozzle of the fuel injection pump is stuck, the fuel injection pressure of the fuel injector is too high, and the fuel system of the excavator does not supply fuel, etc.
6. The cylinder compression pressure is not enough, and the excavator engine cannot start smoothly.
Troubleshooting:
1. After the excavator fails to start smoothly, first check whether the engine speed of the excavator engine is too low?
2. Next, check whether there are other failure phenomena besides the engine can not start smoothly when the excavator engine is started? For example, does the exhaust pipe of the excavator have white smoke coming out?
3. If the excavator engine fails to start and white smoke comes out of the exhaust pipe, it means that the diesel in the cylinder of the excavator engine cannot be fully burned or the water content in the diesel is too large. The cause of the failure is that there is air and fuel injection in the fuel system The device is not working properly or the legalized fuel supply time is incorrect.
