Reasons for the sudden slow down of the complete vehicle of Kobelco 230
Recently, a user of Kobelco reported that his Kobelco 230 excavator has been used for nearly ten years. It is both fuel-efficient and fast. Of course, the boss also started his business by loving machines and made a lot of money
When the machine is in good condition, it will work again. The key lies in the careful management of the owner at ordinary times. There is no shortage of fine grain. The accessories for maintenance are all original parts. Let's put it this way. The owner loves the machine better than his son!
Fault!
Not long ago, I loved the machine, but I made a mistake. The whole car suddenly slowed down. I had to make do with my work. I had two cars for each family. He could only load one car. The boss found several maintenance masters in the local area, but they didn't fix it. The key was that I didn't find the fault point. Some maintenance masters even persuaded the owner that "the machine is too old. Sell it now."
Fault analysis of the sudden slow down of the complete vehicle of Kobelco 230
The boss is really helpless when this problem occurs. If it can't be repaired, will he really sell it?
The owner of the aircraft still didn't give up his mind to visit all kinds of miracle doctors locally and online. He didn't know how many people he asked. But there was no result until he found a maintenance master. Although he didn't have any confidence, the result was that he unexpectedly ended his search for a doctor
The maintenance master also inquired about the causes of the basic engine, hydraulic oil pressure, pumps, valves, etc. according to the normal maintenance process. But the boss answered them like a stream. The engine does not hold the car. The hydraulic part of the basic vehicle has been disassembled and cleaned. It has been checked. No problems have been found. The important thing is that the whole vehicle is slow. There are no other faults
Moreover, the owner recalled that the construction was normal before the failure. The maintenance was carried out one week before the failure. The replaced hydraulic oil and filter element were clean. There was no abnormality in the work of the whole vehicle
The action of the Kobelco 230 vehicle suddenly slows down, and the cause of the fault suddenly appears
During the inspection, the maintenance master inadvertently asked how the maintenance was done. The owner of the machine said smugly:
The hydraulic oil and other maintenance parts are from the dealer who bought the car. Last time, it was directly sent by a parts manager who has been working with him for many years. I always use the original parts provided by him. The maintenance is done by myself and the driver together. There should be no problems in this process
I also joked that it's good to know people. In the past, when I inquired outside about the hydraulic oil maintenance, it was about 5K. But this time, an acquaintance gave me a discount on the hydraulic oil maintenance. It used to be about 4K. This time, 3K came down
Listen to the boss The maintenance master felt a bit fishy in an instant! It's too cheap to buy original accessories at a discount! Change the hydraulic oil of the whole vehicle once. According to the quantity, 4K is normal. 3K is definitely a losing business!
Thinking of this, the maintenance master told the boss directly. He still suspected that there was a problem with the hydraulic oil. Anyway, he was ready to sell it. It was better to try to replace the hydraulic oil with a 4K hydraulic oil. At that time, the car could be sold. At the beginning, the boss was not willing. After all, the hydraulic oil was the original hydraulic oil he had just replaced by himself. But after the analysis of the engineer, he was a little suspicious
So the boss was ready to replace the hydraulic oil he had just replaced. This time, the boss went to the dealer's shop to buy the hydraulic oil directly. He found out after inquiring in the shop. The manager who had been selling his accessories had resigned long ago and worked alone. It seems that the problem is going to surface. This hydraulic oil is probably the culprit?
Fault handling of sudden slow down of the complete vehicle of Kobelco 230
Without saying a word, the boss took the hydraulic oil bought in the store home and immediately replaced it. After the replacement, the fault gradually improved after 10 minutes of test run. After all, the hydraulic oil of the whole car could not be changed completely. But after half an hour of circulation, it was all right. The speed returned to the original!
Conclusion: This is the end of the matter. I won't say more about how the boss handled the hydraulic oil dispute. Let's summarize the problems in the whole process of the boss's failure:
1. The boss believed too much in an accessory manager. As a result, he met a lot of people. After later inquiry, the accessory manager sold a small brand of hydraulic oil, so it was very cheap
2. Hydraulic oil can not be mixed at will. There are many additives in it. They are easy to react with each other, reducing the original anti-wear and viscosity characteristics of hydraulic oil
3. A good horse eats the wrong food. The same life is not long. No matter how good an excavator is, it can't eat the wrong food. It's not just hydraulic oil. Fuel, engine oil and gear oil are the same!
