What are the classifications of car maintenance?

There are three levels of car maintenance, which are routine maintenance, first-level maintenance, and second-level maintenance. The maintenance cycle of the car is usually determined according to the comprehensive factors such as the structural performance of the vehicle, the use conditions, and the law of failure, and the car must be maintained once every 2000 to 3000 kilometers.

The purpose of inspection, cleaning, replenishment, lubrication, adjustment or replacement of certain parts of the relevant parts of the car during the designated period of automobile maintenance is to keep the car clean and tidy, the technical condition is normal, eliminate hidden dangers, prevent failures, slow down the deterioration process, and extend the service life.

Routine maintenance content.

In addition to daily maintenance operations, the content of the operation center is mainly cleaned, lubricated and fastened, and the safety components such as braking and manipulation are inspected.

Before leaving the car, during the car, after the operation is carried out by the driver, the content of the operation center is cleaning, supply and safety inspection, which is a regular and necessary work to maintain the normal working condition of the vehicle.

The "Regulations on the Technical Management of Vehicles in the Automobile Transport Industry" divides vehicle maintenance into three levels: routine maintenance, first-level maintenance and second-level maintenance. The maintenance cycle of automobiles is generally determined according to comprehensive factors such as vehicle structural performance, use conditions, and failure laws. Normally, every 2000-3000km the car travels, it must undergo a level 1 maintenance.

After the car travels 10,000-15,000km, secondary maintenance is carried out, and maintenance must be carried out by professional maintenance workers. China Automobile Online School reminds that only by comprehensively inspecting and adjusting the car can we ensure that the safety, power and economic performance of the car meet the requirements of use.

Monthly car maintenance:

During the monthly car maintenance, the weekly car maintenance items should be repeated, but the inspection should be more detailed. Inspect the car, check the damage of the bulb and lampshade, and check the fixing of the body ornaments; Check the rearview mirror in place.

Check the wear of the tires, and replace the tires when there are wear marks close to the tires; Check the tires for bulges, abnormal wear, aging, and hard injuries.

Thoroughly clean the interior of the car, remove excess items from the luggage compartment, and don't let the car become a mobile warehouse; Clean the debris on the surface of the water tank, the surface of the oil radiator and the surface of the air conditioner radiator; Clean the exterior of the car, remove oil from the car body and repair the parts of the car body where the paint has fallen off. Fourth, every six months of maintenance.

Daily maintenance of the car: the cleaning supply and safety inspection are the central content, and the specific requirements of the vehicle maintenance operation carried out by the driver are as follows: the vehicle is clean and tidy; Sufficient working medium (fuel lubricating fluid, power transmission fluid, coolant, brake fluid and battery electrolyte, etc.); Good sealing, no leakage of water, electricity, oil and gas; The accessories are complete and not loose; The braking is reliable, the steering is sensitive, and the light horn is working normally.

Automobile first-level maintenance: In addition to daily maintenance operations, the vehicle maintenance operations carried out by the maintenance company are responsible for cleaning, lubricating and fastening as the central content of the operation, and the relevant safety components such as brake steering are checked.

Secondary maintenance of automobiles: In addition to completing the first-level maintenance operations, the vehicle maintenance operations carried out by the maintenance company are mainly carried out by checking and adjusting the safety components such as the steering knuckle, the rocker arm and the suspension that are easy to wear or deform after a certain period of time, dismantling and inspecting the tires, transposing the tires, checking and adjusting the engine working conditions and exhaust pollution control devices, etc.

The content of the first-level maintenance work is as follows:Check and adjust the ignition system to make it work properly

Cleaning or replacing engine air filters, air compressor air filters, crankcase ventilation air filters, oil filters and fuel filters requires that the filter elements of each filter should be clean and undamaged, and the upper and lower liners should be free of defects and well sealed; Each filter should be clean and securely installed.

Maintenance Items:

Automobile level 1 maintenance project 1: cleaning; This project seems to be maintained by the car owners, but in fact it is not, the meaning of cleaning here is not the cleaning of the surface of the car, but refers to more detailed such as cleaning and replacing the engine's air filter, checking the handle of the rotating engine, cleaning the sediment inside, etc.

Automobile first-level maintenance project 2: body; This inspection is mainly to check and tighten the screws of the body and other accessories are safely tightened. In order to ensure that the parts of the body are not out of condition during the driving process of the vehicle.

Automobile first-level maintenance project three: grease; Don't think that this project is to check whether the car is full of gasoline, you are wrong, this project is mainly to check the height of the crankcase, carburetor and brake fluid level, if it exceeds the standard height, it is harmful to the car. And also to check the whole car for water leakage, oil leakage, and electricity leakage.

The first-level maintenance of automobiles is to clean, lubricate and fasten as the operation center, mainly maintain and clean the sediment inside and check the safety components such as braking and manipulation, and the maintenance company is mainly responsible for the vehicle maintenance operations.

The main contents are: cleaning and replacing the air filter, checking the oil level of the engine, transmission, braking system, power steering system and differential, tightening tire screws, etc.

The main contents of the first-level maintenance of the car are:

1. Carry out fine cleaning of the car and replace the air filter, etc.

2. Check and tighten the safety of the body.

3. Check the height of the crankcase, carburetor and brake fluid level.

4. Check the various devices in the car, such as the three-way catalytic converter device.

Introduction to Level 1 maintenance of automobiles.

The cleaning of the car is not only to clean the car, but also to inspect and clean the interior of the car, such as checking the handle of the rotating machine, removing the sediment, etc., which cannot be handled by the owner himself.

Secondly, when checking the oil and grease of the car, it should be noted that if the liquid level of the brake fluid exceeds the standard, it is harmful to the car, and it must be adjusted well.

Generally, we divide the automobile inspection into three parts: vehicle testing, engine testing and chassis and body testing, including the following items:

1. Engine testing

a.Technical condition of the cooling system. b.

the technical condition of the oil supply system; c.technical condition of the lubrication system; d.the technical condition of the ignition system; e.

the technical condition of the start-up system; f.abnormal engine noise; g.engine sealing performance; h.

fuel consumption; i.engine power;

2. Vehicle inspection:

a.Rainproof tightness test of automobiles; b.The forelight is the inspection; c.Determination of vehicle noise; d.speedometer calibration; e.Determination of pollutants emitted by automobiles; f.Exterior inspection of the car. g.Determination of chassis output power;

3. Chassis and body inspection

a.Running system: B

suspension clearance; c.Wheel balancing includes static balancing and dynamic balancing. d.

Wheel alignment includes front wheel alignment (amount of side slip) and rear wheel alignment; e.Technical condition of the brake system: 1

Braking distance 2braking force; 3.Braking deceleration.

f.Technical condition of the steering system: The steering wheel includes free travel and steering force.

g.Technical condition of the drive train: 1

Abnormal sound of the drivetrain. 2.Clutch slip ; 3.

Drivetrain swimming angle ; g.Car body shaping positioning.

However, the actual testing work is based on the above classification, according to the performance of the car operating procedures, generally speaking, the main performance of the car is divided into; Power, economy, safety, reliability, environmental protection, handling stability, passability and driving smoothness, etc., so the testing of the car is also from the above performance testing.

The central content of the first-level maintenance operation is to increase the requirements of lubrication, fastening and safety parts inspection on the basis of daily maintenance, and the first-level maintenance should be carried out by professional maintenance enterprises, that is, it should enter the factory for maintenance. The first-level maintenance operation is as follows: 1. Check and adjust the ignition system to make it work normally.

2. Clean or replace the engine air filter, air compressor air filter, crankcase ventilation air filter, oil filter and fuel filter, and the filter element of each filter should be clean and undamaged, and the upper and lower gaskets should be free of defects and well sealed; Each filter should be clean and securely installed. 3. Check the height of crankcase oil level, coolant liquid level and brake fluid level and make it meet the regulations. 4. Conduct visual inspection of the crankcase ventilation device and the three-way catalytic conversion device, which should be complete and undamaged.

5. Check and tighten the connecting bolts of radiators, oil pans, engine front and rear support pads, water pumps, air compressors, intake and exhaust manifolds, and fuel injection pumps, and require that the bolts and nuts of each connecting part should be tightened, and the locking pins, washers and rubber gaskets should be intact and effective. 6. Check the wear and aging degree of the air compressor and generator transmission belt, adjust the tightness of the transmission belt and make it meet the regulations. Check the liquid level and sealing condition of the steering gear, lubricate the steering universal joint cross shaft, horizontal tie rod, ball pin, steering knuckle and other parts and make them comply with the regulations.

7. Check and adjust the clutch to make its control mechanism sensitive and reliable; The free stroke of the clutch pedal is in accordance with the regulations. 8. Check the liquid level and sealing status of the transmission and differential, lubricate the bearings of the universal joint cross shaft and intermediate shaft of the transmission shaft, tighten the connecting bolts of each part, and the ventilation plugs of Qinghao, and the requirements should meet the requirements. 9. Check and tighten each brake line, check and adjust the free stroke of the brake pedal.

It is required that there is no leakage of brake pipelines and joints, reliable fastening of bracket bolts, sensitive and reliable brake linkage mechanism, no water accumulation in the air reservoir, and free travel of the brake pedal in accordance with the regulations. 10. Check and fasten the frame, body and accessories, and require that the bolts, tow hooks and hooks of each part are fastened reliably, without cracks, without channeling, and are complete and effective. 11. Check the wheel and bead retaining ring; Check the air pressure of tires (including spare tires) and replenish them as appropriate; Check the hub bearing clearance.

It is required that the wheels and bead retaining rings are free of cracks and deformations; The tire pressure meets the regulations, and the valve caps are complete; There is no obvious looseness in the clearance of the wheel Yi bearing. 12. Check that the suspension mechanism should be connected reliably and without damage. 13. Check the battery, and require the height of the electrolyte level to meet the regulations, the ventilation hole is unblocked, and the electric pile chuck is clean and firm.

14. Check the lights, instruments and signal devices, which are complete and effective, and installed firmly. 15. Lubricate the lubrication points of the whole car, and require each lubrication nozzle to be installed correctly, complete and effective. 16. Check the whole car, and require that the whole car does not leak oil, liquid, air, electricity, or dust, and the dust cover is complete and effective.

Article 5 The maintenance of road transport vehicles is divided into: routine maintenance, first-class maintenance, and second-level maintenance.

Routine maintenance is the vehicle maintenance work that the driver is responsible for performing every day before, during and after the vehicle is collected. Its operations center is dedicated to cleaning, replenishment, and safety inspections.

Level 1 maintenance is the maintenance of the vehicle that the repair company is responsible for. In addition to daily maintenance operations, the content of the operation center is mainly cleaned, lubricated and fastened, and the safety parts such as brakes and manipulation are inspected.

Level 2 maintenance is the maintenance of a vehicle that is carried out by a repair company. In addition to the first-level maintenance operation, the content of the operation center is mainly to inspect and adjust the safety parts such as steering knuckles, steering rocker arms, brake shoes, suspensions, etc., which are easy to wear or deform after a certain period of use, and disassemble and inspect the tires and carry out tire rotation. Level 2 maintenance must be performed on a regular basis.

Routine maintenance, primary maintenance, secondary maintenance.

The first-level maintenance is carried out by professional maintenance personnel, and the content of the operation center focuses on cleaning, lubrication, fastening, and inspection of relevant components in addition to daily maintenance operations. In addition to the first-level maintenance of the engine and clutch assembly, chassis and electrical equipment, the content of the first-level maintenance includes:

1. Check the front and rear suspension bolts and nuts of the cab, which should be fastened reliably, and the devices of each part should be complete;

2. Tighten the cab pedal fixing bolt;

3. Tighten the U-shaped bolts of the carriage, and all parts are complete and effective;

4. Tighten the engine cover hinge and the front end safety hook fixing screw, which should be locked reliably;

5. Check the tow hook and hook, which should be complete and effective.

The main contents of the first-level maintenance of the car are as follows:1. Cleaning. The meaning of cleaning here refers to meticulous things such as cleaning and replacing the air filter of the engine, checking the handle of the rotating machine, cleaning the sediment inside, and so on.

2. Body. Check and tighten the screws of the body and other accessories for safe tightening. In order to ensure that the parts of the body are not out of condition during the driving process of the vehicle.

3. Grease. Check the crankcase and carburetor.

and brake fluid.

The height of the liquid level, if it exceeds or exceeds the standard height, it is harmful to the car. And also to check the whole car for water leakage, oil leakage, and electricity leakage.

4. Check the device.

Inspect various devices in the car, such as three-way catalytic converters.

conversion device; Radiators, intake and exhaust manifolds, carburetors, fan scales, air compressors.

Generators and other small but important parts in the car.