[Auto Repair Knowledge]Causes and preventive measures of automobile oil leakage

In the use of vehicles, oil leakage failures often occur, which will directly affectcarTechnical performance, leading tolubricating oil, The waste of fuel consumes power, affects the cleanliness of the car, and causes environmental pollution. Due to oil leakage and the reduction of lubricating oil inside the machine, the machine parts are poorly lubricated and the coolant is insufficient, which will cause early damage to the machine parts and even leave hidden accidents.

1. The main reason for common vehicle oil leakage 1. Products (Accessories) Poor quality, material or workmanship; there are problems with structural design. 2. Improper assembly, unclean mating surface, damaged gasket, displacement or failure to install in accordance with operating regulations. 3. Uneven tightening force of the tightening nut, broken buckle of sliding wire or loose and falling off, etc. lead to work failure. 4. After long-term use, the sealing material wears excessively, deteriorates due to aging, and becomes invalid due to deformation. 5. Too much lubricating oil is added, the oil level is too high or the wrong oil is added. 6. The joint surface of parts (side covers, thin-walled parts) is flexed and deformed, and the shell is damaged, causing the lubricant to seep out. 7. After the vent plug and the one-way valve are blocked, due to the pressure difference between the inside and outside of the case, it will often cause oil leakage at the weak seal. 2. Measures to prevent vehicle oil leakage 1. Pay attention to the role of padding. The gasket between the parts of the stationary part of the automobile (such as each joint end face, each end cover, shell, cover cushion, flat enamel cover, etc.) plays a role of leak-proof sealing. If the material, production quality and installation do not meet the technical specifications, the sealing and leak-proof function will not be achieved, and accidents may even occur.Such as an oil pan orValveThe cover is not easy to compact due to the large contact area, which causes oil leakage. 2. All kinds of fastening nuts on the car need to be tightened according to the specified torque. If the packing is too loose or not tight, the gasket will leak; if it is too tight, the metal around the screw hole will bulge or the thread will slip and cause oil leakage. In addition, if the oil drain plug of the oil pan is not tightened or loosened and falls off, it is easy to cause oil loss, and then the machine damage accident of "burning tile and holding shaft" will occur. 3. Timely replacement is invalidOil seal. Many moving parts (such as oil seals, o-rings) on the car will be incorrectly installed, and the shaft journal and the oil seal cutting edge will not be concentric, and will swing and throw oil. Some oil seals will lose their elasticity due to the aging of the rubber when they are used for a long time. Any leakage should be updated in time. 4. Avoid blockage of check valve and vent valve. As a result, the temperature in the tank is increased, and the oil and gas fill the entire space and cannot be discharged, which increases the pressure in the tank and increases the consumption of lubricating oil and shortens the replacement cycle. After the engine ventilation system was blocked, increasedpistonThe movement resistance increases fuel consumption. Due to the pressure difference between the inside and outside of the tank shell, it often causes oil leakage at the weak seal. Therefore, the vehicles need to be inspected, dredged, and cleaned regularly. 5. Properly solve the sealing of various oil pipe joints. Vehicle union nuts are often disassembled and assembled, and they are easy to slip and break and loosen, which may cause oil leakage. Replace the union nut, use the grinding method to solve the conical surface seal, and press the nut to solve the seal. 6. AvoidWheel hubSling oil. Excessive lubricating grease in the hub bearing and cavity, or improper oil packaging, poor quality and aging failure; excessive temperature of the hub caused by frequent braking; loose axle nuts, etc., will cause the hub to throw oil. Therefore, it is necessary to use the "cavity lubrication method (that is, appropriate amount of lubrication)" to clear the vents. Related: ·Car owners should pay attention to the big pollution problem in the small space in the car[汽车维修]
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