The standardized operation of vehicle maintenance in standardized operating processes is a central element in safeguarding vehicle performance, extending service life and ensuring vehicle safety. Scientificly regulated processes not only improve the quality of maintenance but also optimize operational efficiency and reduce the risk of human error. This paper combines industry norms and practical experience with the development of standardized operational points for the whole process, from car-to-car delivery, and provides professional reference for practitioners and drivers. 1. Vehicle attachment and pre-check. Vehicle receipt and information registration are fully communicated with the owner, recording basic vehicle information (type, mileage, last maintenance/repair time), failure description or maintenance requirements, and completing the " receiving registration form " . At the same time, the description and contents of the vehicle are checked, multiple angle photographs are kept (avoiding subsequent disputes) and the owner is identified with the damage or abnormality existing in the vehicle. 2. Initial detection and diagnosis of start-up vehicles, observation of instrument lamps, glitch stability, aerobics; testing of basic functions such as lights, rain scratches, air conditioning, etc. Access to vehicle failure codes (for failure maintenance type requirements) using diagnostic devices, combined with a description by the owner of the preliminary determination of the direction of the problem. For maintenance type requirements, check the maintenance cycle (e. G. Oil replacement cycle, filter replacement mileage, etc.) and confirm the list of maintenance items. Standardized maintenance operation process (in the case of routine maintenance). 1. Replacement of oil and filters for safety protection: development of warning triangles, lifting of hand brakes, holding of p/n block (automatic) or blank ( manual block) and initiation of electronic stationary vehicles (if any). Lifting and discharge: steady lift of vehicles to a suitable height (or with a jack + safety stub) with a lift to confirm support. Oil bolts are found in the oil casings, gloves, goggles are worn, oil bolts are slowly opened, old engine oils are discharged (with regard to high temperature burns) and oil bolts are re-loaded when the oil is running out (with twists meeting the requirements of the plant to avoid slips or leaks). Machine filtering replacement: removal of old machine oil filters (part of the vehicle type requires specialized tools) and cleaning of installation of oil stains; placement of a small amount of new machine oil on the new machine filter seal and manual wrenching followed by 3/4 loops (or recoiling as prescribed by the manufacturer). Add new oil: lower vehicles, add new engine oil from the point where the oil is inserted (reference user's manual), which is based on the scale of the meter (in the case of a cold car, the position is between the top and bottom scales). Inspection and repositioning: start the vehicle and see if the oil casing and filter interface are leaking; turn off the engine and wait five minutes to re-check the metering to confirm that the oil level is normal. Some of the models are subject to a diagnostic device or a system repositioning reminder. Air filters and air-conditioning filters replace air filters: open engine compartments, find empty filtration casings (most of which are buttons or bolts fixed), remove shell covers, remove old filtrations and clean up dust in the shell; install new filtrations (head and back, sealed tape adhesion), restore the hulls and secure them. Air-conditioning filters: find air-conditioning filtering positions (mostly behind glove boxes, below the middle console or engine compartment) based on the type of vehicle, remove lids, remove old filtrations (note dust scattered), install new filtrations (the arrow direction corresponds to the direction of the air flow), and restore the lids. Brake system inspection and maintenance brake fluid inspection: observe the fluid level of the brake liquid tank below the lower limit and require the addition of the same type of brake fluid (avoiding mixing of different brands/models); test the water content of the brake fluid and complete replacement of the excess water content (usually > 3%). Brake plates/discretion checks: remove tyres and observe the thickness of brake blades (the remaining thickness <2 mm to be replaced), whether the wear and tear are evenly balanced; check the surface of brake plates for grooves, deformations, cd-roms or replacements as necessary. (b) bracing tube road inspection: visual inspection of whether the brakes were broken, oil leaked and the connections loosed; start-up of the vehicle, stepping on the brake pedal to feel hardness, and the vacuum enabler abnormalities require further scrutiny. Tyres and chassis maintenance tyre checks: measuring the tyre pressure (reference to the side of the door bearing marking) adjusted to standard values; checking the depth of the tyre wreaths (<1. 6 mm to be replaced), whether drums are in place, nails and grinding; and changing tyres (following the plant's suggested switch, such as cross-place or back-to-back shifts). Underground inspection: visual inspection of oil spills and deformations from the arm, ball head, shock-mitigator; examination of damage to the transfer axis, semi-axis dust shield; tight bolting of the chassis (as required), lubricating ball head, liner (as required). Standardised process for maintenance operations (in the case of failure maintenance). 1. Design of a failure diagnosis and programme that combines pre-inspection data, failure code, owner description, and locates the failure point through a three-step "call-test-validation" (e. G. Engine shaking requires inspection of spark plugs, ignition rings, oil-jet mouths, etc.). A maintenance programme is in place to identify parts to be replaced, maintenance hours, spare parts models/brands, and maintenance orders are signed after communication with the owner. 2. Spare parts dismantling and replacement safety codes: power outages (dismantling negative poles of bottles), discharges (e. G. Fuel systems, air conditioning systems) and avoidance of high-pressure injuries or short circuits. Use of specialized tools: use of tools such as drums, wrenchs and lammas that match specifications to avoid violent dismantling (e. G., use of specialized tools to remove rubbers and oil seals to prevent damage to installation slots). Installation of components: new components will need to be checked for model matching and look good; they will be installed in the order prescribed by the manufacturer, with the twisting of the rigid bolts (e. G., cylindrical lid bolts will need to be sharpened in fractions); compliance seals will be applied evenly to the parts that need to be sealed (e. G. Oil hulls, gaskets). 3. System debugging and testing for vehicle recovery after maintenance, linking diagnostics to remove failure codes and matching systems (e. G., air-saving door matching, speedbox learning). Test: test vehicle power, brakes, brakes, diversions, etc. In a safe segment, verify whether the failure has been removed, and observe whether any new malfunctions have occurred. Quality check and hand-over 1. Multi-level test system self-check: once the repair/maintenance technician has completed the operation, check item by item against the process list (e. G., whether the tool is missing, whether the fluid is leaking and whether the function is normal). Cross-checking: re-checking of key areas (e. G. Brake system, engine tank fluids, chassis bolts) by squad leader or another technician. Final inspection: the mass examiner conducts a comprehensive examination, including physical cleaning, functional testing, examination of the test vehicle report, confirming compliance with the standards of the plant and signing the release. 2. Prepares to notify the owner of the vehicle about the cleaning of the vehicle (elementary vacuuming, appearance washing) and arranges maintenance/maintenance documents (including spare parts lists, working hours, warranty period). Provide the owner with details of the repair/maintenance contents, information on replacement accessories, follow-up matters (e. G., wear-over driving advice, next maintenance time) and demonstrate whether the vehicle function has returned to normal. Maintain vehicle owner contact details and create vehicle protection files to facilitate follow-up services. 5. End-of-service and safety code 1. Tool and site organization inventory tools to be placed in a tool vehicle or cabinet; clean-up of oil pollution, waste (e. G. Old machine oil, filters, broken parts) in the area of operation and treat them in a manner consistent with environmental requirements. Check the return of equipment, such as lifts and jacks, and shut down power and gas sources to ensure that the site is clean and safe. 2. Safety and environmental protection requires that hazardous wastes such as waste fluids and batteries be recovered by qualified institutions and that dumping be prohibited at will。(c) operating with protective equipment (mittens, goggles, work clothes) to avoid mechanical injury and chemical burns; fire-fighting operations (e. G. Welding) need to be equipped with fire-fighting equipment
