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Disassembly and Casino redeeminstallation of the engine (disassembly and assembly of the engine: repair from scratch) The engine of the car is the "heart" of the vehicle_, and the performance and maintenance of the engine are directly related to the service life and safety of the vehicle. Therefore, when When the motive fails, timely repair and maintenance are very important. This article will introduce the disassembly and installation of the engine to help the owner have a preliminary understanding of the structure and maintenance methods of the engine. 1. To remove the top cover, first of all, you need to remove the top cover of the engine. The top cover is usually composed of two parts: the valve head and the cylinder head. The valve coverLocated above the cylinder head, it is used to fix the cylinder head. The cylinder head covers the cylinder and closes the combustion chamber of the engine upwards. When removing the top cover, you need to pay attention to retaining and marking the top cover accessories, such as valve springs, camshafts and rocker arms. Two. Dismantling the crankshaft connecting rod. When disassembling the engine, the crankshaft connecting rod of each cylinder needs to be removed separately to connect the piston and the crankshaft to form a reciprocating motion of the engine. The connection point between the crankshaft and the connecting rod is called "pin", and special tools are required to disassemble the pin. 3. After removing the piston and components and removing the crankshaft connecting rod of each cylinder, it is necessary to release the exhaust gas in the cylinder through the exhaust valve, and then use professional tools to push the piston out of the cylinder. At the same time, it is necessary to keep and mark all piston rings, piston pins, piston rods, valves and other components for future reinstallation.Four. Remove the crankshaft. When disassembling the engine, you need to disassemble the crankshaft. The crankshaft is the core part of the engine and one of the most difficult parts to disassemble. When disassembling the crankshaft, you need to use special tools, such as crowbars and universal wrenches, and pay attention to avoid scratching or deformation of the crankshaft. 5. After testing and replacing the internal parts of the engine, it is necessary to check and replace or repair the problematic parts. For example, it is necessary to check the degree of wear of the cylinder liner and crankshaft, and replace components such as piston rings and crankshaft bearings. 6. Assemble the engine. After replacing all the problematic engine parts, the engine needs to be assembled. During the assembly process, it is necessary to tighten the connection according to specific sequences and torque specifications to ensure that all parts can be installed correctly. At the same time, it is also necessary to pay attention to the replacement of oil seals and seals to ensure that there is no oil leakage inside the engine.When disassembling and installing the engine, it is necessary to pay attention to: first of all, have certain skills and experience, as well as certain professional tools; secondly, be careful to ensure that the engine will not be damaged or cause danger. If you are confused or unsafe about the disassembly and installation of the engine, please seek professional technical support.

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