Fault symptoms:

Modern 215-7 excavator does not school oil pump before the fault phenomenon of excavator stuffy car does not take black smoke, looking for a master school oil pump and change the new plunger, excavator or stuffy car does not take black smoke. If the amount of digging oil is increased, the black smoke of the excavator is particularly large, and the car is not stuffy.

In addition, the nozzle of the excavator did not change, or use the original car.

Analysis of the fault phenomenon of "Modern 215-7 excavator stuffy car without black smoke" by modern excavator repair technician:

1. It is mentioned in the above description that the excavator master is asked to check the oil pump, and the excavator stuffy car does not smoke after the new plunger is replaced, which may be the fault of the diesel oil circuit. It is suggested to replace the filter element, and check whether the oil pipeline is blocked?

2. You can connect a pipe directly from the oil tank to the oil pump without going through the filter element, and see if the phenomenon of the stuffy excavator car without black smoke still exists? If the fault disappears, the fault is caused by the oil circuit.

3. It is also said that if the oil supply of the oil pump is increased, the stuffy car phenomenon of the excavator will disappear, but the black smoke phenomenon of the excavator is obvious. At this time, it is recommended to clean the air filter, check or replace the diesel filter element. At the same time, we should pay attention to whether the excavator burns oil phenomenon? If accompanied by the excavator burning oil phenomenon, it is necessary to check the excavator engine.

4 Summary, if there is a stuffy excavator car without black smoke phenomenon after the school pump fault phenomenon is still the same, you can also start to check from the excavator hydraulic aspects, observe whether the excavator work slow down? If the movement is slow, the cause of the failure is hydraulic problems.

The above is the analysis of the fault phenomenon of the "Modern 215-7 excavator stuffy car without black smoke" by the maintenance technician of Merite Modern excavator.