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Car maintenance knowledge and cycle

2018-03-15 01:36:19

Many owners will have such a question: 4S maintenance cycle and the car user manual said maintenance cycle is different how to do? So who is in charge of the car maintenance cycle? The maintenance cycle of 4S is not the same as the maintenance cycle on the vehicle user manual, which not only exists in some imported brands, but also in many joint venture brands. On the problem of shortening the maintenance cycle, a 4S after-sales manager in the southern suburbs said: "The user manual of our brand's models is 7,500 kilometers of maintenance once, but we will recommend that customers come back every 5,000 kilometers to do maintenance." The reason is poor road conditions and oil products, every 5,000 kilometers to help the long-term maintenance of the engine, and remind the owner to form good car habits." The after-sales manager of a 4S brand said: "The maintenance cycle written in the user manual is for the best economic consideration, and 7500 kilometers is the bottom line." Not only the quality of gasoline and oil is not good abroad, but also the air quality can not meet the standard, therefore, the replacement cycle of oil and three filters must be shortened." Subsequently, an engineer of a European joint venture brand told reporters: "The maintenance cycle of the vehicle's on-board user manual is developed by the car according to the design of the engine and after long-term testing, therefore, the maintenance cycle on the on-board user manual is scientific." In a German imported car 4S, a staff member said: "The original European literal translation version of the on-board maintenance manual of all our models is used, and the maintenance cycle is every 15,000 kilometers." However, taking into account the quality of the oil, road conditions and air quality, the maintenance cycle will be shortened to every 5,000 km. However, if the maintenance cycle is followed according to the European manual, it will cause great damage to the use of the vehicle. For this point of view, an unnamed staff member of the China Consumer Association said: "No vehicle is imported or in production, since the maintenance manual is printed in simplified Chinese, then consumers think that the maintenance cycle in the manual is formulated for China's road conditions." If the owner uses the vehicle according to the requirements of the maintenance manual, how to solve the problem, the home must explain accordingly." The staff also said: "In the new car handover, dealers have the responsibility and obligation to explain the instructions to consumers, and regular training or other forms of car maintenance knowledge." But for the purpose of profit, it is obviously not advisable to fool consumers into frequent maintenance." The auto industry believes that: "The current vehicle maintenance cycle is formulated by the car owners, if the car owners feel that the road conditions and oil problems affect the engine life, please come up with evidence." Dealers do not have the power to change the vehicle maintenance cycle. Car maintenance is a big cost, many owners are worried about car maintenance. Having a clear maintenance schedule and keeping it on schedule can keep your car looking as healthy as new. The maintenance period is determined by the reading on the odometer or the time since the last service and the conditions of use. Under any one or more of the following conditions, the vehicle shall use a maintenance cycle under strict load conditions. 1. Tow a car or often engage in outdoor activities. 2. Drive on dusty roads, bumpy roads, muddy or salty surfaces. 3. Repeat short drives within 32 km. 4. Often idle for a long time or drive long distances at low speeds. Oil oil quantity standard method: start the engine, let the car run, so that the engine reaches the working temperature; Park the car on a flat road, pull the hand brake, turn off the engine, and wait a few minutes for the oil to flow back into the oil pan. Remove the dipstick and wipe it clean with a clean cloth. Put the dipstick back in, all the way down. Take out the dipstick again, and the normal oil level height must be between the top (MAX) and bottom (MIN) of the dipstick. Transmission oil self-discharge standard measurement method: start the engine, let the car run, so that the water temperature gauge pointer reaches the normal working temperature; Park the car on a flat road and pull the hand brake (do not turn off the engine). Keep the engine idle with your foot on the brake pedal; Shift the shift lever from P gear to L gear one by one and hold it in each gear for a few seconds. Finally, arrange the shift lever in N gear position. Remove the dipstick and wipe it clean with a clean cloth. Put the dipstick back in, all the way down. Take out the dipstick again, and the normal oil level must be in the HOT range on the dipstick. Brake oil Brake oil is the most important kind of oil, according to the regulations usually a year or 30,000 kilometers to replace once (whichever comes first), if not yet to replace the time, but also to check the brake oil stock, you can first distinguish by the scale outside the brake oil pot, the brake oil must be between Max and Min, if there is a reduction must be added to the Max position, The number of different brake oil is not mixed. 【 Abstract 】 Regular maintenance of the car is something that every car owner has to do. Vehicle maintenance projects are complex, and there are many contents to consider. Here are some of them for you. First, after the car should check the maintenance of the main items to check and supplement fuel, lubricating oil. Clean the inside and outside of the vehicle and the engine and chassis. In the severe winter season, if there is no antifreeze in the cooling system, the radiator cover and the water release switch and the water release switch of the engine should be opened, the cooling water should be drained, and the water should be drained for a short time, so as to avoid remaining frozen cracked cylinders, radiators, and air brake vehicles should exhaust the sewage in the air reservoir. Close the switch and tighten the hand brake after extinguishing, and check whether the ammeter has leakage phenomenon (the pointer points to the "-" side). Check horns, lights, wipers. Check whether the leaf spring is broken, and whether the spring lifting lug and riding bolt are loose. Check the axle and tire nut for non-destructive cracks in the steel ring. Check tires for cracks and air loss. After the completion of the first-level maintenance of the vehicle, the car should be clean, firmly connected, and the three filters should be smooth, no oil leakage, no water leakage, no air leakage, and no electricity leakage. The cleaning operations of the first level of vehicle maintenance include: cleaning the body and wiping the engine and chassis parts. Clean and maintain the air filter. Clean the gasoline filter. Release the sediment in the oil filter, turn the filter handle 3-4 turns, clean the oil filter, and replace the filter element according to the degree of pollution. Release oil and water deposits from the reservoir. Check the oil plane of the engine, transmission, rear axle and steering gear, and add lubricating oil according to the regulations. All parts of the vehicle are equipped with complete and effective oil nozzles, and fill grease (water pump, rotating shaft and universal joint, steering joint, steering rod, etc.) according to regulations. Fourth, the vehicle level maintenance inspection fastening operation items check steering gear, cross tie rod, straight tie rod, each steering arm connection fastening. Check and adjust the tightness and fixing of the air compressor, engine and fan belt. Check the brake valve and brake channel for air leakage, check the brake fluid level of the hydraulic brake master cylinder, and add brake fluid according to the regulations. Check the adjustment clutch pedal, brake pedal free travel, check brake pedal fixed shaft and cotter pin is intact and reliable. Check and tighten all parts of the car connection and bolts. Check the tire pressure and check the tire for damage. Check the battery shell, dredge the small cover vent, and replenish the electrolyte. Check whether lights, wiring, wiper switches are complete and intact. Whether the horn volume tone is normal, whether the various instruments are working well. There are many types of regular maintenance items, and the maintenance items of different vehicles are also roughly the same. Many items in the regular maintenance project are not easy to damage under normal driving conditions, so it only needs to be checked, such as: Tire sideslip condition, brake action and pedal clearance, hand brake action, clutch clearance and clutch oil amount, steering wheel clearance, air conditioning system, instrument function, seat belt and warning system, power window, sunroof, rearview mirror, light, wiper, horn, antenna, central control lock, battery fluid, cool air compressor belt, distributor cap and distributor head, high voltage wire, ignition timing Idle speed and exhaust gas, power steering system, gasoline, drive shaft dust jacket, exhaust silencer, suspension fixed nuts (chassis inspection), tires and disks, wheel bearings, front brake brake vane pump oil, deceleration secondary air intake system, active crankcase ventilation system, evaporative exhaust gas control system, intake temperature control system, coal contact converter and oxygen sensor, etc., If the above equipment is damaged (abnormal) after inspection, the maintenance will be replaced or adjusted. When the new car is driving 1000 kilometers, it needs to replace the engine oil, oil filter and transmission oil, because all the parts of the new car are new combinations, so they can not be completely smooth and close when in contact with each other, such as: Friction between the piston and the piston ring, and between the gears in the gearbox will produce a fine residue after friction, and these residues will flow into the oil and transmission oil that lubricate the machine. The replacement of spark plugs is about 20,000 kilometers once, and some cars are replaced 30,000 kilometers once. The mileage (or time) of some items only needs to be lubricated when reached, such as: door buckle, throttle valve and electric pile head; The brake pump oil is cleaned in 15,000 kilometers, and then cleaned every 10,000 kilometers; In addition, the valve clearance is adjusted every 20,000 kilometers. Some oils and parts need to be replaced as soon as the mileage (or time) is up