Rebirth of the Auto Giant

Chapter 475 Overhaul

Early December 1991.

So far, Tang Dynasty has established 6 overseas offices and 8 special maintenance stations across the country.

Due to the reasonable layout, the service of Tang Dynasty Power Engine is more timely, and it can provide customers with professional and timely after-sales service. The sales of the complete engine have also reached a higher level, basically monopolizing the domestic diesel engine market. Diesel engines

The market share reached more than 72%.

In addition to providing free professional services to users under the three-warranty period, each specially authorized repair station also provides paid services to users outside of the warranty period.

The officially authorized special repair station is designated by the manufacturer and has received professional training from the manufacturer. It has high professionalism and strong technology, and has received unanimous praise from users. Many out-of-warranty users generally open it after their engine breaks or needs major repairs.

Repair at a nearby authorized repair station.

In addition to labor costs for engine maintenance, another big factor is the profit from the sales of spare parts, and the sales of spare parts account for a higher proportion than the maintenance fee.

As a special repair station, the ex-factory price offered by the manufacturer is lower than what is sold on the outside market. In addition to the three-guarantee service fee for the engine, our income also comes from three sources: parts sales and maintenance fees, which greatly improves the service station's efficiency.

Economic income, especially Qinshan Machinery Factory has its own

After a year of hard work, the repair shop's special repair station has grown from three masters and later apprentices to 9 master mechanics, which not only meets the needs of in-warranty services, but also provides a large number of users outside the warranty.

Providing paid services has improved the brand influence of Tang Dynasty.

At the special maintenance station conference held at the Yanjing headquarters last year, two special maintenance stations were upgraded to second-level special maintenance stations, one of which was the Qinshan Machinery Repair Shop in Taiyuan Office.

Now the management of Qinshan Machinery Repair Shop has reached a higher level. It not only has a repair shop, but also has a user reception room and a parts warehouse, which basically meets the daily maintenance supply.

Some unusual accessories that are not available can be temporarily purchased from the office.

Now the income of the masters there has tripled than before.

Inside Qinshan Machinery Repair Shop.

Rong Jianyuan is conducting preliminary diagnosis on a Tang Dynasty heavy truck.

After opening the front of the car, Rong Jianyuan first checked the nameplate on the side of the engine.

This is a tcd6114qb engine, manufactured on March 13, 1985.

"Master, please help me, the car is having a hard time going uphill. It was very hard at the beginning. Now some slopes are higher and it takes half a day to pull a load of dirt," the driver said.

Rong Jianyuan looked at it and said, "You bought this car at least six years ago, right?" This is an engine manufactured in 1985, and due to the low output of Tang Dynasty heavy trucks, they were often sold within two months of production.

, basically there are no cars in stock.

The so-called stock cars are those produced by the manufacturer and kept in the warehouse for more than half a year.

"Yes, these are the earliest batch of cars, about six years old," the driver replied.

Rong Jianyuan looked at the gasket where the exhaust manifold was in contact with the body. There were serious signs of oil leakage. Black oil stains seeped out from the exhaust pipe gasket, which was covered with a thick layer of dust.

Rong Jianyuan scraped it with the flat screwdriver in his hand, then brought it close to his nose and smelled it. There was a smell of burnt engine oil.

The intake manifold tube also shows signs of lubrication.

"Start it and let me take a look." Rong Jianyuan said. He came to the exhaust pipe at the back of the car. When the engine started, a stream of blue smoke came out like a smoke window. The gas discharged from the exhaust pipe was bluer and also

With dripping oil, "Stop!" Rong Jianyuan shouted.

When the car stopped, Rong Jianyuan used a flat-blade screwdriver to scrape some at the exhaust port and smelled it. He already had a plan in mind.

"Master Rong, smoke." Seeing Rong Jianyuan's confident look, the driver jumped out of the car and took out a packet of Zhonghua from his pocket and handed it to him.

The cigarettes were given by the director when we arrived, mainly to "bribe" these masters.

Rong Jianyuan was not polite and started to smoke.

"Master Rong, others say that the engine is burning oil, what do you think?" The driver also told Rong Jianyuan that I am not easy to fool.

"That's right, and it burned very badly. It stands to reason that our Tang Dynasty engine has been running for five or six years. If the maintenance is done properly, not to mention that the engine oil is not burned, it is not so obvious. Look at this here." Rong Jianyuan pointed out.

The upper exhaust manifold followed the gasket in contact between the air manifold and the body and said: "These oil stains are due to insufficient maintenance at ordinary times, resulting in loose fluid inside the cylinder.

The piston ring and cylinder liner are severely worn, and the gap between the piston ring and the cylinder liner is large, causing the oil to escape into the combustion chamber, and then seep out from the exhaust valve and intake valve. Over time, it will look like this. Such an engine,

It’s so powerful, and I just saw that the gas emitted by the engine is bluish in color, which is a very obvious sign of burning engine oil.” Rong Jianyuan analyzed.

"Master Rong, how much do you estimate it will cost to repair this engine?" The driver looked at Rong Jianyuan, and then added: "I heard that you guys came here after formal manufacturer training."

Rong Jianyuan replied: "You are going to overhaul the cylinder liner, piston rings, intake and exhaust valves, and valve seats. They must be replaced with new ones. As for how much it will cost, you can go to the parts department to see our maintenance fees.

The prices of accessories are also transparent. There is a table. We have accessories here.

They are all purchased directly from the manufacturer's office and are the same as the accessories in your engine. These are expressly stipulated by our engine manufacturer. If we charge a penny more, you can always call the engine manufacturer to complain.

We." Rong Jianyuan said.

"Okay, I'll bother you, master." The driver said, and Rong Jianyuan took him to the parts department to explain the situation to his colleagues in the parts department.

The other party immediately made a list, including the cost of accessories and the repair fee of the master, and quickly calculated the total amount. "Now we probably need these things. How much is needed will be determined based on the actual damage when the engine is disassembled." Rong

Jianyuan said.

The driver looked at the order and said he wanted to go out and call the company.

"Don't bother going out to make a call, just call us here." said the comrade from the accessories department.

"Thank you, sorry for the trouble." The driver said, and then called the work unit to explain the situation.

"Okay, our leader has agreed. Master, you can do whatever you want. Others don't believe it. You are a Tang Dynasty Power authorized maintenance station, but we still believe it." The driver said.

"Okay, let's dismantle it now." After Rong Jianyuan finished speaking, he took his son Rong Huai'en to start disassembling the engine.

First, lift the engine out and place it on the stand.

Rong Jianyuan was on top, first dismantling the intake and exhaust manifolds and the rocker cover. His son was on the bottom, first draining the engine oil, and then removing the oil pan... The two had a clear division of labor.

In less than half a day, the engine was completely disassembled.

Six cylinder liners, pistons, connecting rods, and cylinder heads are neatly placed on one side, and the starter and engine are placed on the shelf on the other side.

"Driver, look at this, the cylinder liner and the piston ring are so worn. There are deep scratches on the inner wall of the cylinder liner." Rong Jianyuan picked up a cylinder liner and pointed at the inner wall, "You want to go again?"

Look at the top of the piston. The thick layer of carbon deposits is caused by long-term burning of engine oil. It proves that you have not done enough maintenance at ordinary times. When it is time to change the oil, you are reluctant to change it. You feel that it is okay not to change it. You are not willing to spend a small amount of money.

Now we have to spend a lot of money..." Rong Jianyuan said.

"Uh..." When the other party heard what Rong Jianyuan said, it was as clear as if Rong Jianyuan was following him.

"Dad, look at this air filter, there is something wrong with it." At this time, his son Rong Huaien came over with the air filter and handed it to Rong Jianyuan and said.

Rong Jianyuan looked at it, frowned and said: "Your air filter is also the culprit. It is not a genuine accessory. It caused a lot of dust to enter the engine and accelerated the wear and tear of the engine..." Rong Jianyuan gave the other party a popular science.

Regarding the role and importance of air filters, "This is a painful lesson. In the future, accessories must be from regular sources.

Buy and sell accessories from regular manufacturers through channels. Although the appearance of this air filter is no different from that of our manufacturer, the most important thing is the filter paper inside. The filter paper produced by fake manufacturers has poor filtration performance, and a large amount of dust enters the combustion through the air filter.

room, which ultimately led to this result." Rong Jianyuan pointed at the scratches on the inner wall of the cylinder liner and said.

"Yeah, I understand." I heard these truths before and didn't take them to heart. The car kept driving anyway. Now look at the worn parts in front of me...

The crankshaft bush and connecting rod bush also had to be replaced, and the two pistons had to be replaced if they were severely worn... Rong Jianyuan made a list and asked the other party to sign it.

"Wait a minute, the leader of our unit will come over later, I can't make the decision." The driver said.

"Okay." Rong Jianyuan said and asked his son to start cleaning the parts.