Automobile maintenance is the general name of automobile maintenance and repair. It is to find out the cause of the fault through technical means and take certain measures to eliminate the fault and restore it to a certain performance and safety standard. The following are the basic methods of car maintenance that I bring to you, hoping to help you!
Basic methods of automobile maintenance
The organizational form of automobile repair work includes three aspects: basic repair methods, operation methods and labor organization forms. The following are the basic methods of car maintenance I have compiled for you, hoping to help you.
Check the tightness of the valve.
Smoke blowing can be used to check the tightness of valves and valve seats. Clean the grinded valves, put them into the valve guide tube in turn, hold the valves by hand or with a suitable tool, and then take a puff of smoke, and blow the smoke to the cleaned intake manifold and exhaust manifold, with the principle that the mouth sticks to the manifold without air leakage. At the same time, observe whether there is smoke between the valve and the valve seat. If no smoke comes out, it means that the valve is well sealed, otherwise it should be re-ground.
Check whether the oil and gas paths are clear.
Smoke blowing can be used to check whether the oil circuit of carburetor is unblocked. Carburetors have more oil lines than vacuum lines, especially imported carburetors, which usually need to be purged with compressed gas after cleaning. However, it is difficult for operators to judge which is the oil circuit and which is the real gas circuit, and there are many cases of maintenance. If the smoke blowing rule is used, it is very easy to find out whether the oil passages or air passages are unblocked. You can also use the smoke blowing method to check whether the ventilation holes on the transmission, rear axle housing, steering gear housing and engine crankcase gas check valve are unblocked, and then repair or replace them according to the situation. If these parts are blocked, the internal pressure will increase, which will easily lead to oil leakage of all related parts and lead to failure.
Ash can be used as abrasive. Ash is a better abrasive.
When repairing automobile carburetor, especially imported automobile carburetor, the triangular needle valve is often worn and difficult to buy. At this time, soot can be mixed with engine oil as abrasive to grind the triangular needle and the triangular needle seat, which will achieve satisfactory results.
Cut tobacco can stop clogging.
If the water tank leaks while driving, tobacco can be used for temporary emergency. First use pliers to flatten the radiator with large water leakage in the water tank, then unscrew the filler cap of the water tank and remove the thermostat. Then, the cut tobacco is crushed and put into the water tank from the filling machine. Finally, start the engine and run it at low, medium and high speed respectively, so that the cut tobacco put in can be absorbed at the water leakage of the water tank core pipe. When it is observed that the water tank is blocked due to water leakage, cover the fuel filler cap and drive. But it should be noted that this can only be used as an emergency, and the water tank should be thoroughly cleaned and maintained with high-pressure water. Tobacco can also be used to temporarily relieve local small bleeding. It is not unusual to engage in auto repair, cut some meat and shed some blood. After bleeding, if you cover the wound with clean cigarette silk, you can temporarily stop bleeding and relieve pain.
Vehicle maintenance method
Check the tire pressure regularly.
Tire pressure is an important factor affecting tire life. Not too high and not too low. Inflate according to the tire pressure marked on the vehicle. Try to keep the tires down in summer; It's cold in winter, and try to ensure that the tire air of the car is more than that in summer, because the tire is easy to expand with heat and contract with cold. This is the only way to drive comfortably and safely.
Sometimes individual vehicles will eat tires, so it is necessary to check the tires, especially the inside, to see if there is abnormal wear, mainly to observe whether the tread patterns on both sides of the tires are consistent.
Deepening maintenance of lubrication system
The main function of lubrication system is to effectively lubricate all parts of automobile engine and prevent excessive wear. Under normal circumstances, the car needs to be cleaned and maintained every 5000km- 10000km, and it also needs to be cleaned and maintained when the engine noise is too high, the acceleration is weak and the water temperature is too high.
In general, the car needs cleaning and maintenance 10000km- 15000km, or when you find the engine shaking, slow, poor acceleration, black smoke, weakness and waste of engine oil, you need cleaning and maintenance 1 time. Remove the glue and carbon deposit inside the system to prevent harmful corrosion, avoid and eliminate the leakage of seals and water tanks, and completely replace the old coolant.
Easy to Ignore Part 1: Steering Rod
During maintenance, the tie rod must be carefully checked. If the tie rod is loose, it may lead to serious consequences. The method of inspection is to pull the pull rod hard to see if it is easy to shake. If it shakes, the ball head or pull rod assembly needs to be replaced.
The service life of spark plugs ranges from 30,000 to 654.38+10,000 kilometers. If there is something wrong with the spark plug, it will affect the working state of the engine, so we need to check whether the spark plug needs to be replaced regularly.
Tips for car care:
Although it looks lifeless, it is really afraid of the sun. Long-term exposure will make it old and wrinkled. Ordinary beauty waxing has some effects, but because any car wax contains silicon, long-term ultraviolet radiation will rust the car paint and leave small black spots. Moreover, car wax itself cannot enhance hardness and resist ultraviolet rays, and it will be lost quickly because of high temperature. Therefore, when parking, you should park your car in the shade.
Many car owners don't often open the window. In order to make the air conditioner windy, they often only choose internal circulation. After a long time, the air in the carriage will become turbid, especially in the hot and humid weather before the thunderstorm, and bacteria are easy to breed. At this time, the owner can choose to buy some interior cleaner or go to the car beauty shop to thoroughly clean the interior of the car.
Correct car maintenance procedures
Mastering the correct steps of car maintenance will make car maintenance work less detours. In short, it is to ask the owner or driver first, then observe the automobile fault phenomenon in person, judge the fault position according to the fault phenomenon, and check and measure the suspected position with relevant instruments, so as to find out the cause of the fault and eliminate it. The following is the main content of How to Maintain Cars and the Correct Steps of Car Maintenance compiled by Guangzhou Handa Automobile Maintenance College.
1. One of the correct steps of car maintenance: ask the user.
Don't disassemble the car in a hurry when troubleshooting it. You should ask users, investigate and understand the purpose of the car, the phenomenon of failure, the process of its emergence and development, whether it has been repaired in other repair shops and so on. , and record the information provided by users, and carefully analyze and study it. On the one hand, it can reduce the misjudgment or omission of fault location and quickly eliminate faults, on the other hand, it can provide first-hand information for summarizing maintenance experience.
2. Correct car maintenance Step 2: Actual observation
After asking the user about the car fault, we should carefully observe and verify the car fault, see if the fault reflected by the user is true, and try our best to know which functions are lost and which functions are normal. In this way, the scope of fault causes can be narrowed as soon as possible, the fault location can be accurately judged, and the vehicle can be repaired in time.
3. Correct car maintenance Step 3: Analyze and judge all departments according to the fault phenomenon.
In order to facilitate the analysis and judgment of the fault location, the following describes the fault phenomena when several main components fail:
supply unit
The failure of power supply will make the car unable to work or work abnormally. The fault phenomena without battery voltage fault are: start the engine and the engine will not catch fire; The horn doesn't ring, the headlights don't light up, and all kinds of indicator lights don't light up. When the battery voltage is lower than the normal value, the starter will weaken, the lights will dim and the horn sound will be distorted. Bad generator circuit will increase power supply and damage electrical equipment and light bulbs; If it can't be recharged, the battery will be dead.
Startup part
The starting part is responsible for providing the torque required when the engine starts. Therefore, when the starting part fails, the horn and lighting system are normal but the engine cannot start running.
Ignition component
The main phenomena that the engine can't work normally due to partial ignition failure are: the engine can't start or suddenly turn off; Although the engine can start running, the work is uneven and individual cylinders do not work; Reverse rotation when the engine starts, knocking or insufficient power when accelerating, poor acceleration and too high temperature; Although the engine can be started, there are other anomalies.
Partial cold state of engine electronic control system
The main phenomena that the engine can't work normally due to the failure of the engine electronic control system are: the engine can't start; It is difficult to start the engine in cold state; It is difficult to start the engine in hot state; The engine is in a bad idle state; The engine has poor high-speed performance; The engine has poor acceleration performance; Idling for a long time will lead to flameout and cannot be started again; When climbing a long slope, the engine is in poor condition, which makes the flameout seem to be ineffective, but it can be started again after a while; When you step on the accelerator pedal, you can't accelerate, but it will cause a sudden flameout.
Auxiliary electrical components
When most self-contained systems are damaged, the fault phenomenon is only related to the lines and components in the system, so it is easy to judge. It must be noted that in some vehicles with automatic transmission, anti-theft control, remote starting and other auxiliary control devices, the starting circuit is also controlled by the neutral start switch, anti-theft controller and other States.
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Automobile maintenance knowledge
1, afraid of "dirty"
If the parts such as fuel filter, oil filter, air filter, hydraulic oil filter and all kinds of filter screens are too dirty, the filtering effect will become worse, and too many impurities will enter the oil cylinder, which will aggravate the wear of parts and increase the possibility of failure; If the traffic jam is serious, the vehicle will not work normally. Dirty parts such as radiator of water tank, radiator of cylinder block and cylinder head of air-cooled engine, radiator of cooler, etc. It will lead to poor heat dissipation and high temperature. Therefore, this "dirty" part must be cleaned and maintained in time.
2, afraid of "hot"
The engine piston temperature is too high, which easily leads to overheating and melting, resulting in cylinder locking; Rubber seal, V-belt, tire, etc. Overheating, premature aging, decreased performance and shortened service life; The coils of starter, generator, regulator and other electrical equipment are overheated, which is easy to burn and scrap; Vehicle bearings should be kept at an appropriate temperature. If they overheat, the lubricating oil will deteriorate quickly, which will eventually lead to bearing burning and vehicle damage.
3, afraid of "string"
Various coupling parts in diesel engine fuel system, driving and driven gears in drive axle main reducer, hydraulic control valve block and valve stem, valve core and valve sleeve in full hydraulic steering gear, etc. It is specially treated and ground in pairs during manufacture, and the matching is very accurate. During the service life, they are always used in pairs and cannot be interchanged. Some parts that cooperate with each other, such as piston and cylinder liner, bearing bush and journal, valve and valve seat, connecting rod big head tile cover and rod body, have relatively good cooperation after a period of running-in. Pay attention to assembly in pairs during maintenance, and don't "cross the door" with each other.
4, afraid of "anti"
Engine cylinder gasket can not be installed backwards, otherwise it will lead to premature ablation and damage of cylinder gasket; Some piston rings with special shapes cannot be assembled reversely, and they should be assembled according to the requirements of different models. There are also direction requirements when installing engine fan blades. Fans are generally divided into exhaust and suction, and cannot be reversed, otherwise the engine will have poor heat dissipation and high temperature. For tires with directional patterns, such as herringbone tires, the footprint on the ground after installation should make the herringbone tip point backward to ensure the maximum driving force. For the two tires installed side by side, different models have different requirements, and it is not allowed to install them at will.
5. Fear of "lack"
When repairing vehicles, some small parts may be neglected, and some people even think that it doesn't matter whether they are installed or not, which is very dangerous and harmful. Engine valve keys shall be installed in pairs. If they are missing or lost, the valve will lose control and the piston will be damaged. Locking devices, such as cotter pins, locking screws, safety plates or spring pads installed on engine connecting rod bolts, flywheel bolts and transmission shaft bolts, may cause serious failures in use once they are missing; Once the nozzle used to lubricate the gear in the engine timing gear room is missing, it will lead to serious oil leakage and low oil pressure. The lack of water tank cover, oil tank cover and oil tank cover will make dust invade and aggravate the wear of various components.
6, afraid of "oil"
The paper filter element of engine dry air filter has strong hygroscopicity. If it is stained with engine oil, it is easy to suck high-concentration mixed gas into the cylinder, resulting in insufficient air volume, increased fuel consumption, decreased engine power and possible "runaway" of the diesel engine. If the V-belt is stained with oil, it will accelerate its corrosion and aging, and it is easy to slip, which will lead to the reduction of transmission efficiency; Brake shoe, dry clutch friction plate, brake band, etc. If it is stained with oil, it is easy to slip and work poorly, thus threatening driving safety; Oil stains on the carbon brushes of the starting motor and generator will lead to insufficient power of the starting motor, and poor contact will lead to low voltage of the generator. Tire rubber is very sensitive to oil corrosion. Contact with oil will soften or peel the rubber, and short-term contact will cause abnormal or even serious damage to the tire.
7, afraid of "washing"
Some beginners in driving or repairing may think that all spare parts need cleaning, but this understanding is one-sided. For the paper air filter element of the engine, when cleaning the dust on it, you can't use any oil to clean it. You can only tap it by hand or blow it from the inside to the outside with high-pressure air. For leather parts, it is not advisable to wash them with oil, but to wipe them with a clean rag.
8. Fear of "stress"
If the tire casing is stored under pressure for a long time and not turned over in time, it will be deformed due to extrusion, which will affect the service life; If the paper filter elements of air filters and fuel filters are squeezed, they will be greatly deformed and cannot play a reliable filtering role; Rubber oil seal, V-belt, oil pipe, etc. It should not be squeezed, otherwise it will be deformed and affect normal use.
9. Fear of "near fire"
Rubber products such as tire, V-belt, cylinder liner water stop ring, rubber oil seal, etc. If they are close to the fire source, they will easily deteriorate or be damaged. On the other hand, they may cause fire accidents. Especially for some diesel vehicles, it is difficult to start in cold winter, and some drivers often use a blowtorch to heat them to prevent them from burning out lines and oil circuits.
10, afraid of "duplication"
Some parts should be used once, but individual drivers or maintenance workers reuse them for saving or because they don't understand "taboos", which is easy to cause accidents. Generally speaking, engine connecting rod bolts, nuts, fixing bolts of imported diesel fuel injectors, cylinder liner water stop rings, sealing copper gaskets, various oil seals and sealing rings of hydraulic system, pins and cotter pins at important positions, etc., must be replaced with new products after disassembly. For the engine cylinder gasket, although no damage was found during the overhaul, it is better to replace it with a new product, because the old product has poor elasticity, poor sealing, easy ablation and damage, and the use time is short, and it is time-consuming and laborious to replace it. It is better to replace it as much as possible if there is a new product.
Small knowledge and methods of automobile maintenance
Nowadays, with the development of society, more and more people begin to own cars, which facilitates our travel. So how to repair the car if something happens on the way? The following is my car maintenance tips for you, hoping to help you.
Small knowledge of automobile maintenance
1. The whole vehicle shakes at high speed.
Fault determination: true fault.
Cause analysis: When the vehicle travels normally to about 96km/h, the whole vehicle will shake. If the speed is reduced, this phenomenon will disappear. If it accelerates to about 90km/h, it will shake again, indicating that there is something wrong with the automobile chassis. The reasons for the failure are: inaccurate tire dynamic balance; Loose front and rear suspension, steering, transmission and other mechanisms; Front wheel alignment and wheelbase deviation; Half axle clearance is too large. First of all, the misalignment of wheel balance will make the wheel jump when rolling, which is the main reason for the vehicle jitter. Secondly, the suspension mechanism, steering mechanism and transmission mechanism are loose, which leads to inaccurate toe-in value and wheelbase of the vehicle, and the leaf spring is too soft, which leads to * * * vibration when the vehicle is driving and induces the whole vehicle to shake. Thirdly, the excessive clearance of the semi-axle makes the afterburner move irregularly during driving, which intensifies the wear and tear, causes the unbalanced rotating mass and causes the whole vehicle to shake. If the above faults are not eliminated in time, it will lead to a vicious circle, which will lead to other faults.
When the car turns, the big turn of the steering wheel turns into a small turn, and the steering wheel obviously turns into a big turn.
Fault determination: true fault.
Cause analysis: The former is called understeer, and the latter is called oversteer, indicating that there is something wrong with the steering system. When the car turns around and accelerates, the driver feels that the car with insufficient steering performance will drive outward, and the car with excessive steering performance will drive inward. When the driving radius becomes larger, it is called understeer. When the driving radius becomes smaller, it is called oversteer. There is also a steering phenomenon, which starts with understeer, then turns into oversteer in the middle and turns sharply inward. This is the most dangerous phenomenon of reversing, which is prone to accidents. This only happens in individual cars with rear engines.
3. It is difficult for the engine to start cold. After starting, the engine vibrates and then tends to be stable. The engine began to shake at middle and low speed, and improved at high speed.
Fault determination: true fault.
Cause analysis: it may be that the spark plug is faulty or the ignition time is too early. If it is not the fault of the spark plug, it can be judged that the ignition time is too early. If the ignition time is too early, at the moment when the spark flashes, the piston is far away from the top dead center, and the pressure and temperature of the mixture in the cylinder are not high, resulting in slow flame formation and slow propagation speed after flame formation. In this process, a part of the mixture far away from the spark plug in the combustion chamber will automatically burn due to the temperature radiation and expansion of the mixture after combustion, resulting in severe engine jitter at low and medium speeds. When the above faults occur, you should go to the repair shop for repair in time.
4. The engine is not running smoothly, often accompanied by the sound of "chug chug". When accelerating, the engine power is insufficient, and the shooting sound of "bang, bang" is issued from time to time, and the exhaust pipe emits black smoke.
Fault determination: true fault.
Cause analysis: It is possible that the carburetor and platinum are faulty or the ignition time is too late. If the ignition time is too late and the engine piston approaches the top dead center, the spark plug will start to ignite, and the combustion of the mixture will be delayed and incomplete. When the piston descends, even if the exhaust valve is opened, the mixture will still burn, and the expansion of the combustion chamber volume and the delay of gas expansion will lead to low cylinder pressure and reduced engine power. The partially combusted and expanded mixture may also flow back to the carburetor through the intake valve, causing backfire, making a violent "bang, bang" sound, and the incompletely combusted mixture emits black smoke from the exhaust pipe. When the above faults occur, you should go to the repair shop for repair in time.
When the temperature is low in winter, it is difficult to start the engine when the car is parked for a long time.
Fault determination: false fault.
Cause analysis: Due to the low temperature, the fuel gasification rate is reduced, the mixture is diluted, it is not easy to burn and it is difficult to start. At the same time, due to the low temperature, the viscosity of engine oil increases, the running resistance of engine increases, and it is difficult to start. In addition, the slow chemical reaction of battery electrolyte leads to insufficient power output, insufficient starter power and insufficient ignition voltage, which makes it difficult to start the engine. Therefore, the car should warm up the engine before starting in cold season. Hot water or steam can be injected into the radiator and the water jacket, and the temperature in the water jacket can be conducted to the cylinder wall, so that the fuel entering the cylinder during starting can be easily gasified, and the temperature of combustible mixture can be increased to facilitate combustion. The battery can also be preheated as needed to enhance the battery capacity and improve the starting current and ignition voltage.
6. The steering wheel swings when the car is running empty and under heavy load, and the steering wheel swings seriously when driving on a flat road.
Fault determination: true fault.
Cause analysis: generally speaking, the toe-in does not meet the technical standards, the internal fit clearance between the tie rod ball head and the steering gear is too large, or the steering gear fixing bolt is loose, and the steering knuckle pin and bushing are too worn. The resultant torque caused by the looseness caused by the above reasons will push the steering wheel to swing left and right.
7. The steering wheel swings as soon as the car encounters a fault while driving, and it swings more seriously when it is under heavy load.
Fault determination: true fault.
Cause analysis: Generally speaking, it is caused by uneven wear of front tires, uneven use of new tires or pads, and rim deformation. Because, when the wheel speed is fast, the torque that drives the steering wheel to rotate mainly comes from the deflection of tires or rims. When the tire or rim deviation exceeds 3mm, the yaw moment can drive the steering wheel to swing left and right. Should go to the repair shop to check and replace tires or rims as appropriate.
8. Driving at a high speed on a good road, the steering wheel swings when the car is heavy and empty, and it swings seriously when it is heavy. The faster the speed, the more serious the swing.
Fault determination: true fault.
Cause analysis: Generally, the brake drum thickness is different due to loose connecting bolts between the brake drum and the hub, loose bearing holes of the hub and eccentric drilling of the brake drum, which leads to imbalance. Because, in the case of high-speed driving, the wheel rotation speed is very fast, and the torque driving the steering wheel to swing mainly comes from the rotation uniformity and balance between the brake drum and the hub. Under the action of imbalance, both inertia and forward tilt angle produce the torque that drives the steering wheel to swing.
9. There will be some jitter when releasing the clutch.
Fault determination: true fault.
Cause analysis: It shows that the clutch fork, release bearing, pressure plate and friction plate are seriously worn, the transfer case is oil-free, the front telescopic sleeve and its bearing of the rear transmission shaft are seriously worn black, and the oil seal of the rear cover of the transfer case is burnt. There are only two reasons for this. One is that the shafts of the transmission are not parallel due to the positioning problem between the shafts; The other is that the clearance between shafts is too large.
10, unscrew the radiator cover and find that there are always some oil stains floating on the water surface, and there is moisture when changing oil.
Fault determination: true fault.
Cause analysis: The engine has two circulation systems, one is coolant circulation system and the other is lubricant circulation system, and the two systems are not connected with each other. If there is oil in the water or there is water in the oil, it means that there is a problem in an isolated place in the two circulation systems. "Oil into water" and "water into oil" are two different faults. Once the engine is running, the pressure of the engine oil is always higher than that of the cooling water, so the engine oil can easily enter the cooling water through the gap in the cylinder block. On the contrary, cooling water is not easy to enter the engine oil, so the inflow of engine oil is an internal leakage phenomenon: there is a crack at a certain position in the engine oil passage of the cylinder block, and the engine oil is "squeezed" into the cooling water passage through the crack. Because oil is lighter than water, you can find the oil slick by unscrewing the radiator cover. The moisture in the engine oil is another kind of problem, which is caused by the rupture of the cylinder liner or other external reasons, so that the cooling water enters the oil pan and mixes with the engine oil. Therefore, "engine oil entering water" is the fault of the engine body itself, while "water entering oil" is mostly caused by engine accessories, and the fault nature is different.
Automobile maintenance skills
1. Wash leather seats with soap.
Leather seats are afraid of being scratched by hard objects, and even more afraid of being corroded by chemical cleaning agents. The use of transparent soap with minimal corrosiveness not only has a good decontamination effect, but also makes the dried leather soft and shiny. The specific method is to soak a clean soft towel in warm water, evenly spread a proper amount of soap on the towel, and then gently wipe the seat. At this point, if the towel becomes dirty, it proves that the decontamination effect is remarkable. After wiping the soap, ventilate and dry it, and then wipe it twice with a soap-free wet towel after cleaning. This method decontaminates the skin, leaving it clean, fluffy and fresh as ever. This method is also applicable to the plastic parts of door trim and instrument panel. The reason is that soap has strong detergency, no irritation to human skin, and is more practical for dermal parts.
Remove scratches with toothpaste
Shiny car paint often inadvertently shows scratches. For this reason, it is not cost-effective for the owner to push the sand wax to the car beauty shop. Using toothpaste grinding method to remove minor scratches has a good effect. Rinse the scratch with clear water first, then take a clean cloth or towel and dip a little toothpaste in it and rub it gently and repeatedly. After the scratches disappear or weaken, dry them with a wet towel. There is a simple reason. Toothpaste itself is an abrasive for cleaning teeth, which has no harm to human body or car paint.
3. Remove the sticker with essential balm.
It is extremely difficult to remove all kinds of certificates posted on the windshield of the car during the annual review. Apply wind oil essence on the back of the self-adhesive sticker, and wipe it with a dry cloth after a while, and it will fall off without leaving any traces. This law is applicable to self-adhesive trademarks affixed to various commodities. The reason is that essential balm can dissolve the effective components of the adhesive. If you don't have essential balm, you can use toothpaste instead, but the effect is slightly worse.
4. talcum powder can dissolve the adhesion of door seal.
After the rain, the door sealing strip was wet, the paint surface adhered, and the door was uneven, making a "squeaking" sound. You can put a handful of talcum powder on the rubber seam of the car door, and the symptoms will disappear. You can open and close it freely without any noise.
5. Extend the service life of the muffler.
Make a small hole at the lowest point below the muffler. The reason is simple: drainage prevents corrosion.
6. How to start and speed up?
In the case of no load or less load, start directly from the second gear, rush to the third gear after more than 3000 rpm, and then rush to more than 3000 rpm. At this time, the average car will fall behind you, so you can easily change from fourth gear to fifth gear, or directly change to fifth gear without increasing fuel consumption.
7. How to maintain tires
Automobile tires and rims are the most easily dirty parts. Therefore, tire maintenance is also a very important key. Prepare a long-handled brush before washing the tires. If the tire is not too dirty, just wash it with a general cleaner. Unless there is really too much dirt, you may want to buy a professional cleaner.
Chrome-plated mirror-treated rims can't be brushed, which will leave obvious scars. Sponge is generally used for chrome-plated wheels, and then consider using a brush when washing small places. As long as the tires and the parts below the knee are cleaned, the optical fiber of the whole vehicle will look very bright.
8. How to clean the instrument control panel
What does automobile maintenance technology learn?
Automobile maintenance major mainly studies the basic and professional knowledge of automobile application, and cultivates the ability of automobile detection, operation, maintenance and technical management. After graduation, I can engage in automobile maintenance, repair, inspection, assembly, spare parts production, automobile maintenance consultant, automobile sales, insurance, claim settlement and other work in automobile repair shops, 4S shops, automobile manufacturers, automobile inspection departments and automobile parts factories.
Focus on mastering the skills of skilled automobile machinery maintenance technology, automobile electrical equipment maintenance technology, automobile engine EFI technology maintenance, automobile automatic transmission technology maintenance, and understand the principles and maintenance of other new automobile technologies, and have a certain concept of automobile maintenance enterprise management and reception service.
What are the introductory contents of learning auto repair?
The most important thing to learn to repair cars is to be interested. You should know the structure, parts and development history of the car. Practice, practice can exercise practical skills. To learn auto repair, you must go to a professional auto repair school. Recommended Shijiazhuang North Automobile School, school-enterprise education, signing employment agreement, enterprise order-based training, learning and practicing.
Learn the basics of auto repair: 1. "Dirty" parts such as fuel filter, oil filter, air filter, hydraulic oil filter and all kinds of filter screens are too dirty, the filtering effect becomes worse, and too many impurities enter the oil cylinder, which aggravates the wear of parts and increases the possibility of failure; If the traffic jam is serious, the vehicle will not work normally. 2. I am afraid that the piston temperature of the "hot" engine is too high, which may easily lead to overheating and melting, leading to cylinder locking; Rubber seal, V-belt, tire, etc. Overheating, premature aging, decreased performance and shortened service life; The coils of starter, generator, regulator and other electrical equipment are overheated, which is easy to burn and scrap. 3. Be afraid of "cross-wiring" of various coupling parts in the fuel system of diesel engine, driving and driven gears in the main reducer of driving axle, hydraulic control valve block and valve stem, valve core and valve sleeve in full hydraulic steering gear, etc. These coupling parts are specially processed and ground in pairs during manufacturing, and the matching is very precise. During the service life, they are always used in pairs and cannot be interchanged. Click to get professional course materials.
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