Rebirth of the Auto Giant

Chapter 40 Accessories

In addition to engine damage caused by mechanical failure, there is also a high probability of cylinder locking caused by engine piston and cylinder liner caused by excessive engine water temperature.

If there was a mechanical failure caused by loose parts inside the engine, the engine body would have been broken long ago when the engine was running at high speed. Now there are no signs of cracks in the engine body.

Therefore, it is very likely that the tank is pulled due to the water temperature being too high when there is no water temperature meter to observe.

There are many reasons why the water temperature is too high, including the water pump and the belt that drives the water pump. There is also a small part that may cause the engine water temperature to be too high, and that is the thermostat.

The thermostat is a part of the cooling system.

The thermostat is a valve that controls the flow path of the coolant. It is a temperature-regulating device that uses the thermal expansion or contraction of paraffin to open and close the circulation of cooling water.

When the engine is started or cold, the engine needs to reach the operating temperature as soon as possible. At this time, the cooling water does not need to pass through the radiator. At this time, the thermostat is closed, and the cooling water circulates from the water pump to the engine body in a small way. When the engine body temperature

Under high temperature, the water temperature rises rapidly. When the water temperature reaches 70℃ (some are 73℃ or 80℃, each product is different), the paraffin begins to liquefy at high temperature, increases in volume, and opens a large cycle under the force of expansion.

The valve and cooling water pass through the water pump → cooling engine (the cooling parts include cylinder liner, cylinder block, oil cooler, cylinder head, etc.) → thermostat → radiator water inlet hose → radiator water outlet hose → water pump.

If the thermostat fails and cannot open the large circulation, and the cooling water does not pass through the cooler for cooling, the engine will not be cooled and will generate high temperatures, which will cause the cylinder liner and piston inside to lock.

In addition, the engine is old and does not have a water temperature gauge, so the probability of this is very high.

You can find out if you disassemble the thermostat.

Wang Shi asked someone to find tools and opened it. There was a lot of white scale inside. The spring inside the thermostat was also broken due to corrosion by water for a long time, and the parts inside were all corroded and stuck.

"Looking at it, I'm sure that the engine has a cylinder failure." Wang Shi put the corroded thermostat on the ground and said.

"Just this small thing? The whole ship can't move?" Zhao Yiming saw that this small part caused the whole ship to be unable to run. If Wang Shi hadn't said it, he wouldn't have believed it even if he were killed.

"Even though it's just such a small thing, a mouse dropping can ruin a whole pot of porridge." Wang Shi saw Zhao Yiming's eyes widening and looked closer, looking like he didn't want to believe it.

"They say that a line is like a mountain. Now I finally understand it. If it weren't for you, Xiao Wang, who would have believed that this little thing stopped the whole ship?" Zhao Yiming felt relieved when he finally found out the reason.

"Now, let's fold it and take a look." Since we are here, we must resolve the matter, otherwise Uncle Zheng will not be in good shape.

"Okay, you guys are here to listen to Xiao Wang's instructions. If you need anything, Xiao Chen, you can help and cooperate. We must repair the engine as soon as possible." Zhao Yiming knew that the next step was to turn on the engine. The space is so small, and he had to bring irrelevant people with him.

Went up, leaving five members of the mechanic class behind.

"What do I call you?" Wang Shi asked when he saw a familiar man in his thirties standing to his left.

At the same time, Wang Shi also saw that the current masters were standing in two rows intentionally, not standing together with the master he asked about before. Wang Shi also felt that these people seemed to do this intentionally.

"Master Wang, my name is Zhou Delin." the other party asked.

"Well, you call four people to help me. The other people are not allowed to come down without my consent. Go ahead." Wang Shi saw that the people centered on the old master just now were a little dissatisfied with him, so he might as well not

Let you observe here, my skills are not something that just anyone can see.

"Mr. Chen, what do you think?" Wang Shi saw that the old master had not left yet, and looked at Comrade Chen who was assisting him and said.

"Didn't you hear what Master Wang said? Anyone who has nothing to do with it can go up. Xiao Zhou, go up and find four people to come down and listen to Master Wang's instructions." There are no tigers in the mountain, so Comrade Chen, the monkey, has become the king of the mountain.

He said unhappily to several masters who were unwilling to leave.

There were two of Zhou Delin's close colleagues here, so he went up and called two more, and the six of them started fucking underneath the cabin.

"Brother Zhou, why do I think you look familiar? Have we met before?"

"Master Wang, I have just transferred from the army, and I have participated in your training at the General Logistics Department before, hehe."

No wonder, I said why he looked so familiar, he turned out to be his student.

"Oh, it turns out we are old friends. Okay, now we can handle it easily. At the same time, I, the teacher, will test the effectiveness of your training."

"Master, please give me some advice." Zhou Delin had already noticed it at the beginning, but he couldn't take the initiative to say it out unless Wang Shi said it, otherwise others would say that he was a follower of the crowd.

"Okay, now follow my instructions. First remove the rocker cover and disassemble the cylinder head of each cylinder." Due to the large size of marine engines, generally speaking, the cylinder heads are independent of each cylinder, making it easy to disassemble.

repair.

Everyone has some basic knowledge of engines. Under Wang Shi's guidance, it took more than a day to remove the cylinder head, piston and cylinder liner.

Sure enough, as Wang Shi expected, the piston and cylinder liner were broken, and the piston rings and cylinder liner were very worn, with streaks on them and a lot of carbon deposits.

On the afternoon of the third day, everything was moved to the deck and placed neatly together.

Zhao Yiming invited him over. He looked at the parts all over the floor and looked at Wang Shi, "Is these the things?"

"Yes, these are the things. What Uncle Zhao has to do now is to find these new parts, as well as a special large torque wrench. As for the torque wrench, isn't there a company in Shanghai called Shanghai Diesel Engine Factory? You can get it

Just follow the list I wrote and look for it, maybe the other party will have it."

Shanghai Diesel Engine Factory, founded in April 1947, was originally named Wusong Manufacturing Factory of China Agricultural Machinery Corporation. It produced a 5-horsepower gasoline engine on a trial basis. In August 1953, it was officially named Shanghai Diesel Engine Factory and began to design and manufacture diesel engines on its own. In 1958, the first

Taiwan's self-designed and completely domestically produced 6135 diesel engine was born here, pioneering the manufacturing of medium-power high-speed diesel engines in China.

In 1964, the 6135 diesel engine was matched with the first domestic T120 bulldozer and passed the complete machine appraisal. In 1969, it was successfully matched with the first domestically produced ZL40 loader, establishing Shangchai Diesel Company as the main power supplier in the domestic construction machinery industry.

status.

I just don’t know if the opponent has such a large torque wrench.

"There are other parts, but they are all from foreign countries. They are so old, but they are hard to find." Zhao Yiming had a headache when he thought about this.

Not to mention the imported ones, and they are so old, who knows if they are currently producing them?

"Here, Uncle Zhao, let me give you an idea. You can give it a try." Wang Shi also knew that these piston cylinder liners and connecting rod bushes were all products from decades ago. Even if they have foreign exchange, they don't know what they have.

No production.

"If you have any ideas, Xiao Wang, please tell me." Zhao Yiming was a little excited when he heard what Wang Shi had to say.

This is a professional, and his ideas are of course the best.

"Well, you can ask if this ship still has some accessories when it was bought back then. It may be equipped with the parts needed for these engines." Generally, these imported things, such important parts as the engine, should also have some accessories.

For some accessories, if you are a professional, you will definitely buy more important parts such as cylinder liners and pistons, and if it is a new engine, it usually comes with an overhaul kit, repair tools, etc. I just don’t know where to find it after so many years.

Can it be used?