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Interpretation of Domestic Excavator Parts: Interpretation of the Komatsu Excavator Diesel Engine Suddenly Automatically Turns Off and Walks

Release date:2018-11-15

The domestic excavator fittings Chuan Na’s sudden automatic flameout for the Komatsu excavator diesel engine is summarized as follows:

国产挖掘机配件解读小松挖掘机柴油发动机突然自动熄火与行走时的注意事项_国产挖掘机配件

Disadvantages: When the Komatsu excavator was working, it showed that the diesel engine suddenly turned off automatically during operation, and the excavator could not work normally。


Disadvantage diagnosis:


1。 At the beginning of the time, I thought that the excavator had no diesel, so I checked the diesel engine and found that it was not。 So I started the excavator here, but I still didn't catch fire, and I couldn't hear the fuel injection sound of the injector。


2. Then check the excavator oil circuit, and there is no blockage in each part. The maintenance master then removed the injector and took it to the test bench for inspection. The injector also worked normally. However, after a period of time, the excavator will automatically turn off. At the same time, there are still bubbles in the high pressure oil circuit.


甘肃快3走势图3. Then, check each oil pipe joint again, there is no leak point, and the joint seal is intact. Therefore, the suspicion problem may be on the fuel injection pump. Therefore, the low pressure oil passage from the fuel tank to the fuel injection pump is filled with diesel oil, and then a certain pressure is applied to the pipeline connecting one end of the fuel tank. As a result, it was observed that oil was leaked from the oil pump plunger sleeve positioning screw.


甘肃快3走势图4. After removing the screw, the copper washer is found to be seriously damaged, and the positioning groove is just in communication with the oil return hole of the fuel injection pump. In this way, when the opening end of the fuel injection pump works down the plunger, the upper space of the plunger increases to generate suction, and the low pressure oil and the outside air from the positioning screw are simultaneously sucked into the plunger sleeve. When the fuel injection pump pumps oil, it will press the air into the high pressure oil pipe. In this way, air bubbles are generated in the high-pressure fuel pipe, which prevents the diesel fuel from flowing into the injector, and the diesel engine automatically turns off.


Disadvantages: The copper washer of the set screw on the fuel injection pump wears out, causing a shortcoming。


Maintenance method: The domestic excavator parts Chuanna immediately changed the copper washers for the set screws.

国产挖掘机配件解读小松挖掘机柴油发动机突然自动熄火与行走时的注意事项_国产挖掘机配件

In addition, many novice drivers ask the Komatsu excavator if there are any precautions to pay attention to when walking.




Domestic excavator parts Chuanna sum up the operation of walking to pay attention to the following aspects:


国产挖掘机配件解读小松挖掘机柴油发动机突然自动熄火与行走时的注意事项_国产挖掘机配件

1. Before starting the excavator, check the environmental safety situation and clear the obstacles on the road. The unrelated personnel should separate the excavator and then lift the bucket.


2. Try to choose a smooth road surface. When driving, try to drive at a low speed. When turning a big bend, try to operate as much as possible.


3. The excavator travel motor stops the collision or strands on the boulders, suppressing the application of additional force on the track portion.


4. Assume that when the walking rod is parked on the slope, the bucket should be lowered even if it is parked for a short time, and the teeth are inserted into the soil. In the low speed range, the excavator starts, and the starting machine speed suddenly rises, so the driver should pay attention to operating the walking rod.


6. When the excavator walks in the bad air, the rock should be prevented from colliding with the travel motor and the crawler frame. Mud sand and stones enter the track venue to affect the normal operation of the excavator and the life of the track


7. When walking in the water, the water depth should not flow over the track shoes on the side of the carrier wheel, and should pay full attention to the state of the river bed and the water potential.


Domestic excavator parts Chuanna believes that the excavator's walking is very important for the service life of the excavator, so be careful during the operation!






More information about excavator parts can be found in Chuan Na Industrial (www.da-xxx.com). I hope this "made excavator parts to interpret the precautions of Komatsu excavator diesel engine suddenly extinguishing and walking automatically" is helpful. If you still don't understand the place, you can directly contact the message or consult the Chuan Na Hydraulic National Service Hotline 15850333149, we will solve your problem as soon as possible!


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Company Name: Kunshan Chuanna Hydraulic Fittings

Contact: Mr. Chen

Phone: 0512-36863852

Mobile: 15850333149

Address: No. 379, Jinjin Road, Zhangpu Town, Kunshan City

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