Reborn Industrial Tycoon

Both Zhang Gong and Wang Gong were automotive engineers, so of course they looked down on Li Weidong, a young car mechanic.

Even Wei Bin tried to persuade him: "Xiao Li, this problem of disengagement is actually very complicated. Our factory engineers have been studying it all day and night, but they still haven't found the cause of the failure."

However, Li Weidong also despised Zhang Gong and Wang Gong. Both of them were in their thirties. Judging from their age, they should be "worker, peasant, and soldier college students."

The country canceled the college entrance examination from 1966 until it was restored in 1978. During this period, the 12th class of college students recruited were all workers, peasants and soldiers.

The recruitment of workers, peasants and soldiers college students only depends on their background, not their educational level. Priority is given to those from poor and lower-middle peasant backgrounds. Many of them can even miscalculate arithmetic problems in elementary school. Going to college is like attending a literacy class.

Among the workers, peasants and soldiers college students, many outstanding talents have been born, but they are individual elites after all. The overall level of the workers, peasants and soldiers college students is indeed far behind compared to the students recruited through the college entrance examination.

Faced with the questioning of Gong Zhang and Gong Wang, Li Weidong decided to show off his skills, so he pointed to the gearbox of the faulty car and said, "The gearbox of this car should be a foreign imitation, right?"

"You guessed it right." Wang Gong nodded and continued: "There are still many differences in design between foreign gearboxes and domestic gearboxes. It can be seen that they are imitations of foreign gearboxes.

, not surprising."

Li Weidong did not refute, but continued: "Is it a copy of West Germany's ZF gearbox?"

"Do you still know about ZF?" A look of surprise appeared on Engineer Wang's face. He didn't expect Li Weidong to be able to talk about ZF. This is not the knowledge that an auto mechanic should have at all.

When it comes to gearboxes, the first thing Li Weidong thinks of is of course ZF Friedrichshafen, Volkswagen, Mercedes-Benz, BMW, etc., all of which use ZF gearboxes. In the future, there will be many domestic independent brands that use the same gearboxes.

ZF gearbox.

Thinking again that the Huanghe JN162 heavy truck has absorbed Austrian Steyr technology, and Steyr uses a German gearbox, then it is not difficult to guess that the Huanghe JN162 is actually a copy of the ZF gearbox.

Looking at the future, it is not unusual to know about ZF gearboxes. After all, ZF is a Fortune 500 company and a top supplier of core automotive components.

But in 1984, China was still relatively closed. Most people didn't know much about foreign countries. Ordinary people couldn't even name a foreign brand. It was impossible for auto mechanics to know about ZF's gearbox. It had to be a professional car.

Only engineers can know this kind of information.

When Li Weidong mentioned ZF, Gong Zhang and Gong Wang immediately put away their arrogance and no longer dared to look down on Li Weidong.

"How do you know that the gearbox we are copying is ZF's gearbox?" asked Mr. Zhang.

"If I can't even see this, how can I find the cause of the gear-shift failure?" Li Weidong replied with a smile.

"Okay, tell me, why does this car automatically disengage? Is it a problem with the gear bushing?" Wang Gong asked.

Li Weidong shook his head: "Of course it's not a problem with the gear bushing."

Gong Wang's face darkened, while Gong Zhang became excited: "Haha, I just said it, it's a problem with the gearshift gauge."

Li Weidong still shook his head: "It's not a problem with the speedometer."

Zhang Gong also turned dark.

Seeing that Gong Wang and Gong Zhang were about to unite to angrily attack Li Weidong, Li Weidong took the lead in picking up the tools, walked to the faulty car, and removed a component from the gearbox in three strokes.

Li Weidong showed the component to everyone and said at the same time: "This is the reason why the fourth gear automatically disengages."

"Is this a self-locking spring?" Wei Bin recognized the component instantly.

"Yes, this is the self-locking spring for the fourth gear." Li Weidong handed the component to Wei Bin's hand.

The self-locking spring is not a difficult part to process and can be produced by many manufacturers. Compared with the gears and speed gauges, it is not an important part in the entire transmission.

Wei Bin took the self-locking spring, looked at it carefully, checked it again, and then said: "Xiao Li, I'm afraid you made a mistake. This spring is not broken."

"I thought you had any insights! Did you hear that? This spring is good, not broken!" Wang Gong sarcastically said again.

Li Weidong pointed to the self-locking spring and explained: "This spring is not broken, but it is soft! It is precisely because the self-locking spring is too soft that the vehicle automatically disengages in fourth gear."

After Wei Bin thought for a few seconds, he said: "The situation he mentioned is indeed possible. If the self-locking spring is too soft, it will cause automatic disengagement."

Li Weidong then asked: "These faulty vehicles repaired by Yankuang should have undergone level three maintenance not long ago, right? The gearbox must have been cleaned during the level three maintenance, right?"

Wei Bin nodded: "Cars in coal mines suffer a lot of wear and tear. Their third-level maintenance will clean the gearbox."

"This is the problem. Originally, the self-locking spring was in a tightened state, but when cleaning the gearbox, you need to remove the gear and speed gauge, and the self-locking spring loosened. The material and technology of this spring

If it doesn't meet the standard, suddenly release it and the tension will exceed the standard, so it will naturally become softer." Li Weidong explained.

"Nonsense, the self-locking springs we use are all top-quality products!" This time it was Zhang Gong who spoke.

"Gong Zhang, I don't deny what you said. In China, this spring is probably of first-class quality, but can it meet West Germany's standards? Don't forget, what you are copying now is a West Germany gearbox!

"Li Weidong responded.

"Then how do you know there is something wrong with the self-locking spring?" Zhang Gong asked again.

"Actually, when I saw that the gearbox was a replica of a German gearbox, I already guessed that the materials and workmanship of the parts were probably not up to standard. Moreover, the gears, gear bushings and transmission gauges had all been replaced, so the most effective

Possibly, it should be a self-locking spring." Li Weidong replied.

"Then how do you prove that the disengagement is due to the self-locking spring?" Wang Gong asked a very stupid question.

Li Weidong looked at Gong Wang helplessly, and then said: "You have to prove it. Take these self-locking springs, go to the laboratory to test them, and then compare them with Steyr's data. Don't you know?

Is it the truth?”

The self-locking spring is just an inconspicuous small component. Before this, engineers at the Huanghe Factory also checked the self-locking spring of the gear, but the spring was not damaged, so they did not consider the softness of the spring.

Moreover, in the engine, the self-locking spring is not a component that is prone to failure. Even if the gearbox gear is worn, the self-locking spring will still be very strong.

But the engineers of the Huanghe Factory ignored one thing. The gearbox used by the Huanghe JN162 is a copy of the German ZF gearbox, so the parts standards in the gearbox should also reach the German level.

There is no problem with the same domestic self-locking spring when placed in a domestically produced gearbox, but when placed in a German-designed gearbox, the material and craftsmanship are not up to standard.

Although Huanghe Factory copied German gearboxes, it could not copy Germany's advanced materials and processes.

Even if a gearbox is completely copied from the German design and pieced together with domestic materials, the appearance may look similar, but the service life and failure rate are completely different.

For an experienced automotive engineer like Wei Bin, he certainly knows the importance of material technology. Before that, he had been thinking about whether there was something wrong with the design. When Li Weidong reminded him, Wei Bin immediately thought that there was something wrong with the design.

It may be that the materials and workmanship are not up to standard.

This is actually a layer of window paper, which will break if you poke it.

After thinking about this, Wei Bin said: "Xiao Li, please go and sit in my office first, and I will go to the laboratory to test the elasticity and tension of the spring."

After Wei Bin finished speaking, he took the spring, took Gong Zhang and Gong Wang with him, and ran towards the laboratory without looking back.

…

Although Li Weidong knew how to repair cars, he couldn't tell at a glance that the reason for the disengagement was because the self-locking spring was too soft.

The reason why Li Weidong dared to make such a judgment was because in his previous life, Li Weidong had built the Huanghe JN162 heavy truck.

In 1986, Qinghe Transportation Company finally introduced 10 Huanghe JN162 heavy trucks. Along with the trucks, there was a booklet called "Huanghe JN162 Heavy Truck Repair Manual", which was Li Weidong's trump card.

This repair manual introduces the possible faults of Huanghe JN162 and the maintenance methods. As long as the repairman holds this manual, he can prescribe the right medicine to repair the car.

The reason why the repair manual is provided with the vehicle is mainly because Huanghe JN162 has a lot of minor problems. After all, it is a domestic heavy truck, and its technology is much inferior to imported heavy trucks. It is normal for there to be many minor problems.

For this reason, Huanghe Factory had to compile a special repair manual. Anyone who buys a car will receive a repair manual, which can be regarded as providing after-sales service.

For car mechanics, this repair manual greatly simplifies the work process and reduces the workload. Moreover, many faults described in the repair manual can also be applied to other vehicles. It can be said that this auto repair manual is quite

So this is a simplified version of the auto repair textbook.

At that time, Li Weidong was still working as an auto mechanic. Because of his work needs, he knew the contents of the repair manual by heart. However, after such a long time, he could no longer remember what was written in it.

When Li Weidong heard the argument between Gong Zhang and Gong Wang and saw the faulty vehicle, he recalled the cause of the fault recorded in the repair manual.

As for Li Weidong's statement, he guessed that the workmanship was not up to standard, which was entirely a hindsight explanation. Faced with a known result, it is very easy to come up with a reasonable explanation.

…

Wei Bin hurriedly walked into the laboratory.

"Gong Wei, you stayed up all night yesterday, you'd better take a nap before coming back!" an engineer said.

"I'm not sleepy yet." Wei Bin took out the spring and continued: "This is the fourth-speed self-locking spring that was just removed from the broken down car. Go and test it quickly."

The engineer took the spring and turned around to test it, but Wei Bin added: "We will omit the dimensions, horizontal test, vertical test, etc., and go directly to the physical performance test. Zhang Gong, you go together,

After testing, bring me the data."

Zhang Gong nodded and followed.

Wei Bin then ordered: "Mr. Wang, go to the data room and find the data on the Steyr transmission's self-locking spring. We will compare it later."

Gong Wang agreed, turned around and walked towards the data room.

After a while, after the test is completed, the two points of data are compared, and the results are clear at a glance.

"It's really a problem with the self-locking spring!" Wei Bin murmured to himself.

Gong Zhang and Gong Wang looked embarrassed.

"The auto mechanic really got it right!"