Agricultural machinery repair common mistakes
2018-05-24 20:00:27
Installing the piston sheath for open flame heating Because the piston sheath seat is thick, other parts are thinner, and the coefficient of thermal expansion after the open flame is warmed is large, which easily deforms the piston. Generally, the open flame heating temperature is high. During the natural cooling process, the metal structure inside is damaged, which reduces the wear resistance and service life of the piston. Changing the lubricating oil does not clean the oil path Many operators do not clean the oil pan or the oil path when replacing the oil and inject the lubricating oil into it. This is unscientific because the oil pan and the oil path are not cleaned. Containing many impurities, it will intensify the wear of the parts when it enters the surface of the parts, especially the new or overhauled locomotives. After the trial operation, there will be more impurities. If the cleaning operation is not performed, there will be accidents of burning tiles and shafts. Installing cylinder head gaskets for butter Many people like to apply a layer of butter to the cylinder block when installing cylinder head gaskets. When the butter is melted and lost in high temperature, the gap between the cylinder head, cylinder block, and cylinder head gasket creates a gap, and the gas easily jumps out of it, resulting in air leakage from the cylinder and damage to the cylinder head gasket. The coke produced when butter meets high temperatures can also deteriorate the cylinder mats, increase the difficulty of assembly and disassembly, and bring a lot of trouble to repair. Tightening the connecting rod screw without a torque wrench Most drivers do not use a torque wrench when tightening the connecting rod screw, but tighten it with a special wrench. In this way, the connecting rod screws have excessive internal force due to excessive force, causing excessive fatigue of the metal and causing the connecting rod screws to break, resulting in a motorcycle accident. Do not install air filter while driving. The engine must absorb fresh air during operation and eliminate exhaust gas. If no air filter is installed, a large amount of dust in the air will be sucked into the cylinder by the engine during the operation, which will accelerate the wear of the engine and reduce the power of the engine.
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