According to the experience, the common reasons for the failure of the excavator to hold the car are sorted out and shared. In general, if the engine holds the car during the operation of the excavator, it is generally shown that the engine of the excavator loses speed and may even stall
The causes of the engine holding failure of Komatsu excavator are as follows:
1. When the excavator engine is operating under heavy load, the engine will be blocked due to insufficient oil supply. At this time, the fault can be eliminated by adjusting the oil pump flow
2. The booster of the excavator engine leaks oil If the engine supercharger leaks oil during the operation of the excavator, the engine will be blocked if the engine is cooled for a long time, thus causing the engine to hold up
3. The large pump regulator of the excavator is too dirty, which will also cause the engine to hold up. Therefore, the large pump regulator must be cleaned frequently in the daily use of the excavator to avoid failure
4. The power of the excavator engine does not match the power of the hydraulic pump, which is one of the common reasons leading to the phenomenon of "what is the engine holding up?"
5. The engine is blocked due to mismatching of excavator hand oil pump models
6. It may be that the combustion chamber of the excavator engine has more oil and less gas, and the combustion is insufficient
7. It is also possible that the excavator circuit fault causes the engine to hold up
Methods to prevent the excavator engine from choking:
1. It is recommended not to work under heavy load frequently in daily work
2. Check the water tank and oil tank of the excavator engine before and after the excavator is shut down every day, and check whether the booster of the engine leaks oil
3. The regulator of the large pump should be cleaned frequently to prevent the engine from holding up
4. If the engine is blocked due to the mismatch between the engine power of the excavator and the hydraulic pump power, we can first check whether there is any abnormality on the proportional valve and the regulator
5. Check whether the diesel tank is dirty during daily operation
6. When replacing excavator parts, be sure to replace them according to the specified requirements
