Some operators believe that changing parts is very simple, and it is enough to install damaged parts. In actual fact, if it is improperly assembled, the power will drop, the fuel consumption will increase, and the start-up will be difficult. If it is severe, the machine will be damaged. Therefore, the replacement of new parts is stressful: 1. When buying new parts, pay attention to the quality of the parts and identify the defective parts. Carefully inspect the parts for defects such as rust, cracks, and deformation, and if the surface size meets the requirements. 2 The anti-rust paint on the surface of new parts should be cleaned before assembly, especially for precision parts, so as to avoid potential accidents. 3. Deformation products are not universal, and some diesel engine manufacturers produce the same type of deformed products, and their parts are not universal. 4. Replace some fittings should be replaced in pairs. If the gear is replaced, it is not possible to replace only the one with the more serious wear; when replacing the double-row sleeve roller chain in the gearbox, replace the main and driven sprocket in pairs; when replacing the cylinder sleeve, replace the piston at the same time. Piston rings. 5. The same type of standard parts and enlarged parts are not common. Manufacturers will choose to increase the size of spare parts for users to repair, so when buying accessories must be identified purchased parts, is a standard or an increase. Such as standard parts, journals can only be equipped with standard crankshaft watts, otherwise, scraping a large amount of processing when the bearing bush, not only a waste of time, it can not guarantee the quality of repair, but also greatly reduce the service life. 6. When replacing new parts, make the new and old parts of the model exactly the same. When some pilots replaced the new injectors, they did not pay attention to the original injector specifications and models, and often mistakenly purchased the needle valves. 7. Must pay attention to directionality when installing. Some parts have directionality. If you do not pay attention to it, it will cause difficulty in starting after installation, or even damage the parts.
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