In the use of the vehicle, oil leakage faults often occur, which will directly affect the technical performance of the vehicle, resulting in the waste of lubricating oil and fuel, power consumption, affecting the cleanliness of the vehicle, and causing environmental pollution. Due to the leakage of oil and the reduction of lubricant inside the machine, resulting in poor lubrication of the parts and insufficient cooling, it may cause early damage to the parts and even cause hidden accidents.
First, the main reason for the leakage of common vehicles
1. Poor product quality, material or process; structural design problems.
2. Improper assembly of high speed, improper mating surfaces, broken gaskets, displacement, or failure to install according to operating specifications.
3. The tightening force of the tightening nut is not uniform, the slide wire breaks, or the loose lock comes off.
4. The seal material wears too long after long-term use, aging deterioration, deformation failure.
5. Too much lubricating oil, too high oil level or wrong oil.
6. Deformation and deformation of the joint surface of the component and the damage of the housing cause the oil to leak out.
7. After the air plug and the one-way valve are blocked, due to the pressure difference between the inside and outside of the box, it often causes oil leakage in the weak sealing area.
Second, prevent vehicle oil leakage measures
1. Pay attention to the role of cushions. The gasket between the parts where the vehicle rests serves as a leak-proof seal. If the material, production quality and installation do not meet the technical specifications, it will not achieve sealing leakage, even accidents. Such as the oil pan or valve cover, due to the large contact area and difficult to compact, resulting in oil spills.
2. All types of fastening nuts on the vehicle must be tightened according to the specified torque. If the pressure is too tight, the gasket will leak; too tight will cause the metal around the screw hole to protrude or cause the screw to become leaky. In addition, if the oil drain plug of the oil pan is not tightened or loosened, it will easily cause the loss of oil, and then the machine damage of “burning and holding the shaft†will occur.
3. Replace the failed oil seal in time. Many moving parts in the car will be improperly installed, the journal and the oil seal edge are not the same, and the oil is thrown off. Some oil seals used for too long will lose their elasticity due to aging of the rubber. Found that leakage should be updated.
4. Avoid check valve, vent valve blocked. As a result, the temperature in the enclosure rises, oil and gas fill the entire space, and emissions do not go out. As a result, the pressure in the enclosure increases and the lubricant consumption increases and the replacement cycle shortens. After the engine ventilation system is blocked, the piston's movement resistance is increased and the fuel consumption is increased. Due to the pressure difference between the inside and outside of the enclosure, it often causes oil leakage in the weak sealing area. Therefore, vehicles need to be regularly inspected, dredged and cleaned.
5. Properly solve all types of oil pipe joint seals. The joint nut of the vehicle is often disassembled and assembled, and it is easy for the slip wire to break and loosen, which can cause oil leakage. Replace the union nut, use a grinding method to solve the cone seal, make the nut tight and solve the seal.
6. Avoid hub throwing oil. Wheel hub bearings and cavity too much lubricating oil, or its oil packaging with inappropriate, poor quality and aging failure; brakes frequently caused by the hub temperature is too high; axle nut loose, etc. will cause the hub to throw oil. Therefore, use the "cavity lubrication method" to clear the ventilation hole.
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