Pacific Auto Network includes machine maintenance, electronic control, sheet metal, painting, beauty, new energy vehicle maintenance and so on. Mechanical maintenance refers to the mechanical maintenance of the engine and chassis; Electronic control refers to automobile circuit maintenance; Sheet metal and painting are commonly known as copper painters in the market, that is, body shaping and paint surface repair.

Beauty includes many items, such as car washing, polishing, waxing, glaze sealing, crystal plating, film coating, invisible car clothes, film pasting, color-changing film, electrical appliance installation and so on. Inspection and fastening, check the condition of each connector during inspection and fastening operation, and fasten or replace the lost and damaged connectors (screws, nuts, pins, etc.). ).

Due to vibration, alternating load, material deformation or aging, thread damage and other factors, the connector gradually loosens. If it is not fastened in time, the assembly gap will be enlarged, the parts will be worn and damaged, and the safety, power and economy of the automobile will be affected.

For example, the engine cylinder head nut is not tight, resulting in air leakage failure and increased fuel consumption; Leakage of coolant from the cooling system will overheat the engine; The connecting bolts in many parts are loose, which leads to noise when the car is driving. (Photo/Text/Photo: Pacific Auto Network Chen Jie 2)