After these two days, Wang Erzhu has completely recognized Qin Zhenhua as his brother. It is so rare to have a friend in the factory who can be close to each other and sincerely helps him.
Qin Zhenhua glanced at Wang Erzhu and patted his shoulder: "Thank you for your hard work."
There is no need to say thank you between good friends. Qin Zhenhua opened the aluminum lunch box and smelled the familiar aroma of the big pot of dishes inside, with meatballs and pork belly hanging on it.
I had been studying it just now, but I didn't feel anything. Now when I opened the rice, I really felt hungry. Qin Zhenhua's mouth was facing the lunch box, and he was licking it with chopsticks.
"Brother Zhenhua, can this machine be repaired?" Wang Erzhu looked at the rough-looking engine again and asked Qin Zhenhua. Wang Erzhu entered the factory and naturally wanted to be an excellent worker. He was very fond of machines.
I'm interested, but I don't have anyone to teach me. I don't know how to start, such as cleaning the barrel of a cannon, but I'm pretty good at it.
"It's hard to say." In just one minute, Qin Zhenhua had stuffed all the rice into his stomach, and let his stomach digest the rest. He returned to the machine and started
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Wang Erzhu looked at Qin Zhenhua curiously. He could feel that Qin Zhenhua was different from ordinary people. Just his actions in the past two days definitely made Wang Erzhu admire him. Generally, when a master repairs an engine, he starts it directly, listens to the sound, and sees the vibration.
, smell the exhaust to determine where the problem is.
As for Qin Zhenhua, he had nothing but studying a bunch of maintenance information.
In fact, what Liu Jianzhi said was right. Qin Zhenhua was really an expert on paper. He had read countless maintenance information, but he had never repaired it. After all, not just anyone could come in and start repairing here.
Therefore, Qin Zhenhua simply started from what he was good at. If he wanted to repair the tank, he not only had to do it with his hands, but also with his brain. Now, looking at these maintenance data, he could at least know that the maintenance process of these old masters was wrong.
If their repairs are correct, then the tank can already output power reliably, so why should it be scrapped? Eliminate all these repair options, and then look for possible problems!
The maintenance plan was all step-by-step. The engine output power was not enough. First, I suspected that the fuel system had insufficient injection pressure, so I replaced the fuel plunger pump with a new one. Then, I also suspected that the cylinder was not tightly sealed, so I replaced the piston with a new one.
rings, and by the way, carbon deposits and other such things were also removed. Then, the valves were not tightly sealed, and the valves were ground... These maintenance plans must have been carried out in the renovation factory, but it was only in the hands of the old masters here that I felt that the renovation factory
The technology was not up to par, and I didn’t have the skills to do it myself, so I tried it all over again, but the result was that it still couldn’t meet the requirements. Since conventional maintenance couldn’t eliminate the fault, the only option was to scrap it.
Even if it is a routine maintenance, all possible reasons for insufficient engine power have been checked, but the cause of the problem is still not found. Now, I am looking through the maintenance records page by page, until I reach the end, Qin Zhenhua
He frowned.
Sure enough, all methods have been used, and even the most easily overlooked things, such as blockage in the air intake system, etc., have been checked. The masters here have the most experience and will never make mistakes.
"Hey, are you still worrying here?" At this moment, a voice came to his ears. After eating, Liu Jianzhi came back with his disciples. Liu Dajun saw Qin Zhenhua thinking hard here and immediately came up to ridicule him.
.
"Don't you know how to dismantle an engine?" Liu Dajun continued: "Look, you've been here for a few hours and you don't even have a wrench. Why are you bragging about being a technical expert in the workshop?
Apprentices should have the awareness of apprentices and learn more from Master Liu!"
Just behind, Liu Jianzhi leaned against a 59 tank that was being repaired, with a look of satisfaction on his face. Hum, you just know how to repair the abnormal noise of the 69 tank. That's just a blind cat meeting a dead mouse. Anything else.
What else do you want? Give you an engine and you won’t even dare to dismantle it.
"Dajun, take the wrench and show Zhenhua how to dismantle the engine. He is an apprentice who has just been here for three or four days and doesn't know anything. You show him first. Don't move too fast.
, let him see it clearly. If he encounters the opposite teeth or something, he has to teach him. You take it apart first, and after you take it apart, let Zhenhua pretend to look at it."
Smoking was not allowed in the workshop, so Liu Jianzhi continued to hold his water cup with cans and bottles, and said leisurely while drinking tea.
Qin Zhenhua, don’t think I don’t know what tricks you have done. Hum, I will ask Liu Dajun to quickly disassemble the engine, and then, hum, I will leave it to you. You can assemble it slowly by yourself. Wait until you
If you can't pretend, look at how embarrassed you are, you are just bragging.
"Okay." Liu Dajun has been here for more than half a year. Although it may be a bit laborious to install the engine, it is very easy to disassemble it.
Now, he picked up the wrench and started to disassemble the cylinder head. Almost any engine is disassembled starting from the cylinder head. As long as the cylinder head is disassembled, Qin Zhenhua will definitely not assemble it. When disassembling, he will dismantle it casually.
But when assembling, the screws must be tightened diagonally, and a special torque wrench is required.
"Wait!" Qin Zhenhua shouted: "Don't tear it down!"
Don't dismantle it? Are you really going to admit defeat? Liu Dajun took the wrench, turned it around twice in his hand, and said: "If you don't dismantle it, how can you repair it? Let's talk about it! Are you afraid that you can't install it yourself? Haha
.”
After saying that, the other apprentices all started laughing.
"This engine can be repaired without dismantling it at all!" Qin Zhenhua suddenly seemed to have discovered a new world. He stared at a certain part of the engine and looked at it carefully. His voice was a little excited when he spoke.
Everything that can be replaced has been replaced. Except for the cylinder block, everything else is almost brand new. However, the result is that it still cannot reach the intended power. What does this mean?
What was originally a small problem has become complicated!
"Er Zhuzi, clean the lunch box." Qin Zhenhua glanced aside and saw that the lunch box was still there with some residue, so he said to Wang Erzhu.
Wang Erzhu hesitated for a moment, but after looking at the direction of Qin Zhenhua's finger, he immediately understood. He took the lunch box and walked outside.
"Can it be repaired without dismantling it? If you are afraid that you will not be able to assemble it after disassembling it, then just learn it honestly." Liu Dajun continued to ridicule Qin Zhenhua, but Qin Zhenhua did not answer his words and quickly ran to the tool cabinet, holding a tool
A sealant has arrived.
"What are you going to do? Do you know how to use this? Hello, hello!" Liu Dajun's shouts became more and more urgent. He watched Qin Zhenhua spread the sealant along the side cover of the crankcase, and then said: "