What are the items for vehicle secondary maintenance?

[LeGeorge]

Automobile secondary maintenance includes the following items: 1. Engine: The secondary maintenance requires checking the engine's idle, medium-speed, and high-speed operation conditions, as well as whether the cylinder pressure and vacuum degree meet the standards. It also involves verifying if the engine's various indicators after the three-clean and three-filter operations comply with specifications. 2. Clutch: This item involves testing the convenience, smoothness, and reliability of clutch operation to ensure the clutch is easy to use, free of abnormalities, and that the hydraulic system has no oil leaks. 3. Tires: Check whether the tire pressure is normal, whether there are debris such as small stones in the tire tread that could damage the tires, and whether there are signs of aging or bulging in the tires. 4. Whole vehicle inspection: This item involves checking the overall condition of the vehicle, such as cracks in the frame, loose screws, the functioning of lighting, and any abnormal noises while driving. If any issues are found, they will be immediately inspected, adjusted, and resolved.