In 1992, a small village owner became the richest man in the village by owning a car.

Chapter 455 Caterpillar Excavator Repair Guide
Let's give in to Shao Mingxue's wishes for now and let the father and daughter get through this difficult time first.

The car is currently being repaired by Dawei. We'll see when that guy wakes up and decide whether to give him the money back or renegotiate the price of the Caterpillar excavator and sell it to him.

Yu Dawei wasn't too worried that Shao Mingxue's father was a mean-spirited person. After all, the girl was so positive, sunny, and cheerful, and she came from a single-parent family. If her father hadn't been a good person, he wouldn't have been able to raise such a girl in such an environment.

Most importantly, Yu Dawei has reason to believe that a man who leaves notes for a girl every day and takes such good care of her must be a very good person.

There was an element of gambling involved, but Yu Dawei wasn't worried at all about not getting his money back. If Plan A didn't work, he still had Plan B.

In short, we need to get the car fixed first; we can wait for the rest.

"Vroom vroom vroom..." Yu Dawei opened the car door, sat in the driver's seat, and started the car.

The engine sounded fine, and the black smoke coming out of the muffler behind was also normal, so the engine power system seemed to be working properly.

"Let's see how it goes." Yu Dawei placed his left and right hands on the gear shifts on either side of the driver's seat, and his feet on the pedals in front of him.

Caterpillar excavator's travel control is considered second-generation and is currently a widely accepted operating method.

On the right side are the power switch, throttle switch, and instruments.

The feet control walking, while the hands control the boom, forearm, bucket, and other operations.

In the early days of the first generation, there was a round steering wheel in front, and it was similar to driving a large truck, except that some of the gear functions were different.

However, as time went on, this unpleasant user experience was eliminated.

"Walking is still possible..." Yu Dawei controlled the excavator to move forward with his feet. The excavator moved forward faster and more steadily than expected.

What followed was a series of movements by Yu Dawei: backing up, rotating, raising the upper arm, forearm, bucket, digging, compacting...

The test run took about thirty minutes before Yu Dawei turned off the engine, turned around, got out of the driver's cab, and found a shady spot to look at the excavator in front of him.

"It's better than I expected. If it's broken, it's just that the hydraulic pump has some problems." Yu Dawei sighed as he squatted in the shade.

It's obvious from this vehicle that the owner never intended to sell it. It's not because the vehicle is new, but because every part of it has been patched up, giving the excavator an unprecedented balance.

The handling of the entire machine is even better than when it was first manufactured, which is definitely inseparable from the driver's experience of driving day and night.

"Your hydraulic pump's pump cartridge is probably broken. Find a part, take it apart, and replace it. It should take about three to five days." Yu Dawei thought for a moment and figured that this excavator was probably not for him.

Why not take advantage of your time in Kunming to have your excavator repaired and look at other excavators for sale? You might find one with a good price-performance ratio.

Yu Dawei made up his mind, got up, and drove home.

In the evening, Yu Da was the head chef, and the three children played checkers in the living room. Since it was the first time for Duan Xiaowu and A Gui to play, they were very curious about it and asked Xiao Xue a lot of questions.

After dinner was prepared, the children began to wolf down their food.

Yu Dawei cooks mostly home-style dishes, but he brought back the cooking skills he honed throughout his previous life. Even a simple stir-fried cabbage with vinegar tastes far better than any small restaurant back home.

Yu Dawei places great importance on the essential ingredients for stir-fried cabbage with vinegar. It must include a small dried chili pepper and a small red chili pepper. After eating it, the tip of the tongue will have a slightly spicy taste, which, combined with the stimulation of sweet and sour flavors, makes this stir-fried cabbage with vinegar disappear in no time.

"Xiaoxue, when we were at the hospital, the doctor who was taking care of your father told me that the surgery could be performed at any time, depending on whether you have any problems. If there are no problems, they plan to do it tomorrow." Yu Dawei only remembered that he needed to tell Shao Mingxue this while he was eating.

"Okay, I'll go to the hospital to sign the papers tomorrow." Shao Mingxue nodded, her expression still calm, showing no signs of sadness or grief, perhaps because it was just a minor procedure to remove the tissue.

The next day, Yu Dawei didn't rush to repair the car. Instead, he took Shao Mingxue to the hospital, stayed with her until Shao Gang's surgery was completed, gave Shao Mingxue a few words of advice, and then drove away with his two apprentices.

According to the doctor, even after the surgery, he may not wake up immediately and will need to be observed and prepared for a second removal surgery.

Yu Dawei didn't understand why a neurosurgery operation would be so complicated. Maybe the brain itself is very complex?

He didn't understand, but he didn't waste any more time. After arriving at the flea market, he took out a lot of tools from the cab and the excavator toolbox.

With the tools he brought with him on this trip, disassembling a hydraulic pump was no problem at all.

Caterpillar hydraulic pumps are more complex than those of other brands of excavators, and there are also differences in the types of hydraulic pumps used in different models.

Some are single-acting external toothed vane pumps, which are advantageous because they are small in size, light in weight, and inexpensive, while also having a relatively large flow rate, making them suitable for hydraulic systems in small and medium-sized machinery. However, once the load exceeds ten tons, it reaches the limit of the hydraulic system, and it becomes difficult to operate at high intensity.

In addition, there is a gear pump, which is divided into internal gear and external gear. Its service life is much longer than that of a vane pump, but its flow rate is much smaller than that of a vane pump.

The last type is the piston pump, which is currently the mainstream pump used in Caterpillar excavators. It has stable flow, high pressure, and variable adjustment. Medium and large-sized machinery are generally equipped with this type of piston pump.

The Caterpillar excavator that Yu Dawei repaired used a plunger pump. When disassembling it, the three of them still divided the work as follows: Yu Dawei and A Gui were responsible for disassembly, while Duan Xiaowu handed over the wrench.

"Master, when can I help dismantle it? I'm so tired of just handing you wrenches." Duan Xiaowu complained, squatting on the ground and looking up.

"Want to take it apart?" Yu Dawei stood on top of the engine and glanced down at Duan Xiaowu. "After we get the hydraulic pump off, you and Agui can take it apart together."

Yu Dawei was speechless. This kid was usually extremely carefree, but as soon as he started fiddling with mechanical parts and such, he would become very energetic.

Standing next to the hydraulic pump, he was constantly bombarded with questions. Luckily, Yu Dawei has a pretty good temper these days, otherwise he would have locked him in the car long ago. He's so annoying.

As evening approached, Yu Dawei and A Gui finished removing all the external screws of the hydraulic pump. According to their plan, they could find a crane to lower the hydraulic pump down tomorrow.

When Yu Dawei went to the hospital to pick up Shao Mingxue again, the girl seemed to be in a bad mood. After asking her, he learned that there was a patient with a severe brain injury in the next bed who had not woken up for two or three months and had been defined as a vegetative state patient.

Yu Dawei quickly comforted the girl, telling her not to overthink things.

The hospital environment was already depressing, and Yu Dawei figured that since Shao Mingxue's father was being taken care of by the hospital nurses anyway, he would bring Shao Mingxue with him tomorrow to avoid being affected by other patients in the hospital.

Over the next few days, Yu Dawei's repair of the hydraulic pump went relatively smoothly. After all, he had never had any difficulty repairing large parts of Caterpillar excavators before.

Taking advantage of the opportunity to disassemble the hydraulic pump, Yu Dawei explained some of the internal components of the hydraulic pump, as well as his maintenance experience, to his two apprentices.

To Yu Dawei's surprise, Shao Mingxue also knew how to disassemble and reassemble. It seemed that the child had some experience with car repair since she was a child, having grown up with her father.

The three children listened attentively as Yu Dawei taught them repair skills.

"Master, we've taken everything apart, when are we going to put it back together?" Duan Xiaowu looked down at the parts scattered all over the ground.

Around them was a shed made of thin steel pipes and plastic sheeting. This shed was not far from the Caterpillar excavator, in the northwest corner of the second-hand market, and it was also Shao Gang's own small repair warehouse.

Normally, it's used to store broken parts, useless lumps of iron, and some rarely used tools.

Yu Dawei had been considering finding a place to store the accessories, and later Shao Mingxue told him that her father had a small warehouse he had built himself in the secondhand market.

The market usually only contains garbage, and since the flea market is managed by professionals and incurs annual fees, there's very little talk of things being stolen here.

"I estimate it will take another day or two for the parts to arrive."

Yu Dawei found a small stool in the corner, pulled it open, and sat down. He actually had some hydraulic pump parts for Caterpillar excavators, since Caterpillar was one of the brands Ye Qian represented.

However, transportation is very inconvenient nowadays. Sending the pump body from Fanfan's repair shop in my hometown may take longer than expected.

Currently, the only problem with the hydraulic pump is the pump chamber, which is experiencing severe friction. Replacing it and using a good quality hydraulic oil should resolve the issue.

"Xiaoxue, don't be nervous. It's normal for the surgery to be performed ahead of schedule. Besides, didn't the doctor already tell you that your father's condition is the best in the entire ward, and he's most likely to be the first to wake up?" Yu Dawei glanced at the girl who was sitting to the side in a daze.

A few days ago, the doctor at the Third Hospital suddenly said that the second surgery needed to be performed ahead of schedule, which suggested that the situation was not very optimistic. However, the doctor did not tell the girl directly, but instead kept comforting her.

Yu Dawei later asked the patient separately, and it was indeed true that the patient's condition was more suitable for a second surgery in the past few days.

However, the little girl was preoccupied at the moment, probably frightened by the doctor's fake smile.

She's clearly a female doctor, but she looks particularly fierce when she's not smiling, yet her smile looks so fake.

Yu Dawei secretly reminded the female doctor in charge of Shao Gang not to smile at people casually, but she not only didn't appreciate it, but also got very angry and kicked Yu Dawei out.

My good intentions have been wasted. Don't you know how fake your smile is?

(End of this chapter)