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 ensure that the filter element is clean and undamaged, and the upper and lower gaskets are intact and well sealed; All filters should be clean and securely installed.

3. Check the heights of crankcase oil level, coolant level and brake fluid level to make them conform to the regulations.

4. Visually inspect the crankcase ventilation device and the three-way catalytic conversion device, which shall be complete and free from damage.

5. Check and tighten the connecting bolts of radiator, oil pan, front and rear support pads of engine, water pump, air compressor, intake and exhaust manifold and fuel injection pump. It is required that the bolts and nuts of each connection part are fastened, and the locking pins, washers and rubber pads are in good condition and effective.

6, check the air compressor, generator drive belt wear and aging degree, adjust the tightness of the drive belt, make it conform to the regulations. Check the liquid level and sealing condition of steering gear, and lubricate steering knuckle parts such as cross shaft, tie rod, ball joint pin and steering knuckle to make them conform to the regulations.

7. Check and adjust the clutch to make its operating mechanism sensitive and reliable; The free stroke of clutch pedal meets the requirements.

8. Check the liquid level and sealing condition of the transmission and differential, lubricate the universal joint cross shaft and intermediate shaft bearing of the transmission shaft, tighten the connecting bolts of each part, and dredge the exhaust plug. Requirements should comply with the regulations.

9. Check and tighten the brake pipe, and check and adjust the free stroke of the brake pedal. It is required that there is no leakage in the brake pipeline and joint, the bracket bolts are fastened reliably, the brake linkage mechanism is sensitive and reliable, the air reservoir is free of water, and the free stroke of the brake pedal meets the requirements.

10, check and fasten the frame, car body and accessories, and ensure that the bolts, traction hooks and hooks of all parts are fastened reliably, without cracks or movement, complete and effective.

1 1, check the wheel and bead retaining ring; Check the air pressure of tires (including spare tires) and replenish air appropriately; Check the hub bearing clearance. The wheel and bead guard ring are required to be free from cracks and deformation; The tire pressure meets the requirements and the valve cap is complete; There is no obvious looseness in the wheel bearing clearance.

12. Check that the suspension mechanism should be connected reliably without damage.

13. Check the battery to ensure that the electrolyte level meets the requirements, the air vent is unblocked, and the stack chuck is clean and firm.

14, check the lights, instruments, signal devices, complete and effective requirements, and firm installation.

15. To lubricate the lubrication points of the whole vehicle, it is required that all lubrication nozzles are installed correctly, completely and effectively.

16. Check the whole vehicle to ensure that there is no oil leakage, liquid leakage, air leakage, electric leakage and dust leakage, and all dust covers are complete and effective.

Focus on lubrication and fastening, require oil change, and systematically check the lubricating oil quantity of each assembly. When the car travels to the specified interval mileage (generally 1500 to 2000 kilometers), the maintenance union will cooperate with the driver. In fact, the first-class maintenance later fell into the category of "first maintenance".

In the first-level maintenance, the inspection focuses on the oil quantity of engine, transmission, braking system, power steering system and differential, as well as the liquid level of cooling system, cleaning system and battery. If it is insufficient, it must be supplemented. Lubricate the moving nodes according to the regulations (grease injection nozzles are generally set at these designated positions to facilitate lubrication with grease guns). The exposed part of the connector should be inspected and fastened. Clean all kinds of filters, carburetors and gasoline pumps.

Lubrication and fastening are emphasized in the first-class maintenance because the moving parts are not well run-in in the initial operation of the automobile, especially the moving parts of high-speed engines will have some metal chips falling into the engine oil, which will aggravate the wear and tear of the moving parts if they are not removed in time. However, the high temperature caused by the high-speed relative motion of the moving parts will volatilize the grease, and once dry friction is formed, the moving parts will be damaged soon. So be sure to add oil regularly. Many maintenance workers and car owners often do not pay attention to check the fastening of connectors, which is very dangerous. If there are omissions, it may lead to great things.