For example, clean and replace the three filters, clean the idle motor and throttle position sensor, check or replace the lubricating oil of the engine, transmission, drive axle and steering booster, check the engine valve clearance, cylinder pressure, spark plug and other electrical components, check the functions of accessories such as lights, adjust the free clearance of brakes, clutch pedals and hand brakes, check the installation and fastening of important accessories such as engine and chassis front and rear axles, fan air conditioner generator, and check and debug the braking efficiency of SicBox35 brake. In a regular repair shop, these operating procedures are posted on the wall, so you can judge whether the factory or shop is regular or not.