In the use of vehicles, oil leakage often occurs, which will directly affect the technical performance of vehicles, lead to the waste of lubricating oil and fuel, consume power, affect the appearance of vehicles, and cause environmental pollution. Mercedes Benz maintenance experts suggest that due to oil leakage and reduction of lubricating oil inside the machine, poor lubrication and insufficient cooling of the parts will cause early damage to the parts, and even leave potential accidents.
1. Pay attention to the function of cushion. The gasket between parts of automobile static parts (such as joint end face, end cover, shell, cover pad, flat enamel cover plate, etc.) plays a role of leak proof and sealing. If the material, manufacturing quality and installation do not meet the technical specifications, it will not play the role of sealing and leakage prevention, and even accidents. For example, the oil pan or valve cover is not easy to be compacted due to large contact area, resulting in oil leakage.
2. All kinds of fastening nuts on the vehicle should be tightened according to the specified torque. If the gasket is too loose or not tight, it will leak; if it is too tight, it will make the metal around the screw hole bulge or screw the screw thread to slide, causing oil leakage. In addition, if the oil drain plug of oil pan is not tightened or loose, it is easy to cause oil loss, and then the engine damage accident of "burning tile and holding shaft" occurs.
3. Replace the failed oil seal in time. Mercedes Benz thinks that many moving parts (such as oil seal and O-ring) on the car will throw oil due to improper installation, misalignment between journal and oil seal edge, and deflection. Some oil seals will lose elasticity due to rubber aging if they are used too long. If leakage is found, it should be updated in time.
4. Avoid blocking the check valve and vent valve. As a result, the temperature in the tank increases, the oil and gas fill the whole space and cannot be discharged, the pressure in the tank increases, the consumption of lubricating oil increases and the replacement period shortens. After the engine ventilation system is blocked, the movement resistance of the piston is increased and the fuel consumption is increased. Due to the effect of the air pressure difference inside and outside the box shell, oil leakage often occurs at the weak part of the seal. Therefore, it is necessary to inspect and clean the vehicle regularly.
5. Properly solve all kinds of tubing joint sealing. The automobile union nut is often disassembled, which is easy to slide, break and loosen, and cause oil leakage. Replace the union nut, and use the grinding method to solve its cone sealing, so that the nut is compressed to solve the sealing problem.
6. Avoid hub oil spilling. Liaobu Benz automobile repair factory thinks that too much lubricating grease in the hub bearing and cavity, or improper oil packaging, poor quality and aging failure, too high hub temperature caused by frequent braking, loose axle nut, etc. will cause hub oil rejection. Therefore, it is necessary to use "cavity lubrication method" (that is, proper lubrication) "to dredge the air vent.