Yao Yuan took his student ID card, opened the driver's door and sat on it sideways. He was a tall man of 1.8 meters, and with his mother and all the delicious food in the house clinging to him, he looked tall and tall.

Director Ye touched his nose and said to Driver Yu, "Xiao Yu, if he causes other faults, I won't admit it."

"I'm a college student and I'm very familiar with this car. It'll be fine." Driver Yu took a puff of his cigarette and said.

Director Ye has seen Yao Yuan's student ID card and has no doubts about Yao Yuan's identity as a college student. As for whether Yao Yuan has this ability... He has already thought about it. If something goes wrong, the county auto repair shop will not be responsible. Instead, he hopes that Yao Yuan will do something.

Other faults come, so that he can explain it to his superiors easily.

Everyone had their own thoughts, but soon everyone's attention was focused on Yao Yuan.

But Yao Yuan skillfully checked the gear position and handbrake, stepped on the brake pedal with his right foot, and turned the key to start. The four-cylinder gasoline engine started "scratching", the noise was relatively loud, and the water temperature was very low, indicating that the car was in trouble.

Have stayed here for quite some time.

This skillful movement makes people doubt that this guy is an experienced driver.

After the fire, the hydraulic pressure came up, and Yao Yuan felt that the brake pedal went down faster than normal, indicating that the braking system was abnormal. He repeatedly stepped on the brakes, from slow to fast, and then from fast to slow, without stopping.

It means to come down.

Master Liu frowned and said, "What's the use of stepping on it like this?"

"Does this kid want to make a living?" A young worker joked as we were about to have lunch.

However, Master Liu quickly noticed something and looked thoughtful, but he still couldn't figure out what Yao Yuan was going to do. Generally speaking, for this kind of purely mechanical car, you need to constantly press the brake pedal when adjusting the brakes.

, and another person adjusts the tightness of the brake wire according to the pedaling amplitude.

This is also an exhausting process.

However, this cannot detect faults in the braking system.

At this time, Liang Yaoming, who was on Jeep 212, pushed the door to get out of the car and said harshly, "I cheated you out of money and got me to the auto repair shop. I'll make you look good!"

When he saw the license plate number, he was surprised and said, "Brother-in-law, look, that seems to be Director Li's car of the Farm Management Bureau! I'll go take a look!"

"Don't get out of the car!" Liu Yitang grabbed Liang Yaoming, shook his head and said, "Let's take a look first before talking."

Yao Yuan knew about his broken shoes. If Yao Yuan yelled in front of his brother-in-law, his wife would eat him alive.

Liang Yaoming endured his anger and turned to his job, saying, "Brother-in-law, can the auto repair shop hire me? My job at the sugar factory is still hot..."

"If I say it's okay, it's okay. Director Ye and I are... old friends."

…

Yao Xingping tried it for several minutes, and then stared at the odometer for a while, thinking about it.

After he had a basic idea, he turned off the engine and got out of the car, and asked, "Master Yu, is it possible that the brakes don't work when driving on a bumpy road? Besides, there should be a lot of people sitting in the car."

"Yes, yes! That's right!" Driver Yu recalled it carefully, and then his eyes shone with excitement.

He never told anyone about it, nor was he aware of this special situation.

Smiling, Yao Yuan said, "But if you are driving on a flat road or without a load, there will be no problem with the brakes, right?"

"Yes, yes! Good guy! If I hadn't been driving this car, I would have doubted that you had driven this car!" Driver Yu became even more excited.

Director Ye and the others were all dumbfounded, and Master Liu's lips were twitching even more. He had determined the malfunction after a few simple tests, but he found nothing, so he made a judgment.

Yao Yuan asked again, "Have you often driven this car on mountain roads after you bought it? And it's also a dirt road with very bad road conditions."

"That's right, that's right, this car is so useful when it's running bad on the road!" Driver Yu said arrogantly.

Come to think of it, there are no good roads on farms. Let alone farms, there are only a handful of paved roads in Nangang City today.

Yao Yuan nodded slightly and said, "I know what the fault is and where the problem is."

"Great, great! Then, let's fix it quickly, Comrade Yao. I have to wash the car when I get back, and I'll go to the airport to pick up Hong Kong businessmen tomorrow morning!" Driver Yu was so excited when the clouds and mist cleared to see the blue sky.

However, Yao Yuan shook his head and said, "It can't be repaired."

Um?

Driver Yu was stunned for a moment and frowned. Suddenly, he came back to his senses and said, "I know, I know, I...our company will pay for the repair cost!"

He looked at Director Ye.

Director Ye also realized that this college student is really good at repairing, which must be a good thing. He also understood Driver Yu’s eyes and said quickly, "Comrade Xiao Yao, don't worry, our factory will pay for the repairs. You

Just... how about a work-study program with us?"

Yao Yuan shook his head and said with a smile, "Sorry, it really can't be repaired."

After saying that, he was about to leave.

Director Ye became anxious and grabbed Yao Yuan's arm, "Comrade Yao, stay here, stay there, everything can be discussed, right? If you fix it, I'll give you fifty yuan!"

It’s less than half a month’s salary in general units.

Yao Yuan said helplessly, "Director Ye, it's not about money, it's really impossible to repair it. I can tell you the cause of the fault and the faulty parts, and you can decide for yourself."

Director Ye was stunned for a moment and then quickly reacted, "That won't work, that won't work. It's a fault you found, so it's better for you to fix it."

He naturally thought that Yao Yuan was trying to whet his appetite.

Yao Yuan said, "It really can't be repaired."

"One hundred dollars!"

"It really can't be repaired."

"five hundred!"

"It's not about money..."

"One thousand yuan!" This was what driver Yu called out. He seemed to have made up his mind, walked over step by step, and said firmly, "Xiao Yao, if you repair the car, I will give you one thousand yuan! How about it?"

"

Yao Yuan stopped talking, he was very embarrassed.

However, he is not trying to whet his appetite, but it is really impossible to cultivate!

This is a design flaw of Mitsubishi's second-generation Pajero. Unless the manufacturer recalls it for repairs, the root cause of the problem cannot be solved.

The distance between the load-sensing valve at the rear of the car and the rear axle brake oil pipe is too small. When carrying multiple people on a bumpy road, the former will be depressed and rubbed against the latter. As a result, the brake oil pipe will become thinner and thinner until it breaks.

The reason why the brake door incident didn't occur until 2001 was because after a certain mileage, the brake oil pipe was worn and the problem broke out.

Just now, Yao Yuan discovered that the odometer showed that the mileage was as high as 150,000 kilometers. Considering that the car was only bought for more than a year, it was basically certain that the problem was with the brake pipe.

In his previous life, Yao Yuan studied the brake door incident that almost brought Mitsubishi Pajero off the altar, and discovered an interesting phenomenon: Pajeros in plain areas developed brake defects later than Pajeros used in mountainous areas.

This also indirectly proves that Mitsubishi did not fully consider the actual use conditions in various terrains when designing. You know, this is an off-road vehicle.

Can Yao Yuan solve a problem that requires returning to the factory?

He was not sure, so he told them frankly that there was no way to repair it. Not only him, but no repair shop in China could completely solve this problem. So he had just given up on making money.

However, when Driver Yu offered a thousand yuan for repairs, he hesitated. This price was really hard to refuse. As a reborn person, Yao Yuan felt aggrieved. He couldn't even count on a mere thousand yuan.

Make money.

When Driver Yu saw Yao Yuan still hesitating, he gritted his teeth and said, "I'll give you another two hundred! Xiao Yao, this is half a year's salary!"

In order not to be criticized, Director Ye also went all out and said, "Our repair shop will give you another three hundred yuan. How about it? Xiao Yao?"

call……

One thousand and five.

Yao Yuan hesitated and said, "Okay!"

Just when everyone was relieved, Yao Yuan changed the topic and said, "But I'm going to say something ugly up front. This fault is caused by a congenital defect of the car. I can't completely solve it for the time being. I can only guarantee that there will be no problems within two years."

"Two years? Enough, enough! This is enough!" Driver Yu, who thought Yao Yuan said he could not guarantee the repair, breathed a sigh of relief.

No one noticed the "congenital defects" mentioned by Yao Yuan.

Driver Yu only had the important reception task tomorrow in his eyes, and Director Ye was only thinking about successfully solving the matter and getting praise from his superiors. Only Master Liu listened attentively and looked at Yao Yuan while thinking seriously.

It is actually very simple to solve the problem of brake failure. Repair the damaged part of the brake oil pipe or replace it. However, this cannot fundamentally solve the problem. After a period of friction, the failure will still occur.

Yao Yuan carried with him the problems he had in his previous life - striving for excellence and solving problems.

Since people think that the two-year warranty is no problem, Yao Yuan will not go into details.

He asked for a flashlight and jumped down into the trench. Master Liu saw this and followed him down to shine the light for him, showing an attitude of humbly learning.

Yao Yuan took a look and said with a smile, "Thank you, Master Liu. Look here, the load sensor is here and the oil pipe is here. It looks normal. This is because the vehicle is empty. If there are many people on board, plus the road surface

There are bumps, the load sensor is depressed... Look at the position of the brake oil pipe, it is damaged and leaking oil."

He touched it with his hand and found that the brake oil pipe was severely worn, with a small crack appearing and oil slowly leaking out.

Master Liu's old face turned red, and oil and dust mixed together to cover the damaged area. At first glance, it looked no different from normal, and the location was very hidden. It would have been really difficult to find out if there was something wrong with the brake oil pipe.

"How to solve it? Is it wrapping or welding? We don't have spare parts." Master Liu humbly asked for advice.

Yao Yuan shook his head slightly and said with a smile, "Wrapping will increase the diameter of the brake oil pipe. Although it is more wear-resistant, it will cause extrusion and the consequences may be more serious. The same is true for welding. There is only one way."

"Repair it with spot welding, then smooth it with sandpaper."

"Spot welding?" Master Liu's eyes almost popped out of his head. "Such a thin pipe wall will be worn out at just one point, so spot welding can't be done."

Yao Yuan smiled and said, "Do you have a welding machine?"

"Yes." Master Liu said.

Although the factory is deteriorating, its equipment is complete.

"Then please help Master Liu," Yao Yuan said.

Master Liu still wanted to persuade him, but when he thought that the fault was found out in just two efforts, he gave up the idea and quickly called his apprentices to bring over the welding machine.

Yao Yuan learned the skill of electric welding from an eighth-level engineer. In his last life, he was stationed at a shipyard and saw with his own eyes that eighth-level worker welding important parts of an LNG ship by hand! That required welding technology as precise as ballistic missiles.

!
Chapter completed!