How many steps does it take to disassemble and assemble the engine? The disassembly and assembly ste

1. Disassembly steps: 1. Remove the external components of the body and remove the external parts and components such as the motor and generator as required. Then remove the intake and exhaust manifolds, remove the cylinder head, and then remove the gasoline pumps on both sides, so that the external components of the engine are basically disassembled.

2. Disassemble the body components according to the following requirements: 1) Remove the fixing screws of the cylinder head, pay attention to the screws should be loosened from both ends to the middle, and remove the screws in 3 times. 2) Lift down the cylinder head. 3) Remove the cylinder head gasket and pay attention to the installation direction of the cylinder head gasket.

4) Unscrew the oil drain screws of the oil pan. 5) Turn over the ** motor and remove the oil pan fixing screw (note that the screws should also be loosened from both ends to the middle). Remove the oil pan and oil pan gasket.

6) Unscrew the fixing screws of the primary oil filter, and remove the oil filter, oil pump sprocket and oil pump. 3, disassemble the engine piston connecting rod group 1) rotate the crankshaft, so that the engine cylinder piston is at the bottom dead center. 2) Disassemble the fastening nut of the connecting rod of the cylinder respectively, remove the connecting rod bearing cover, pay attention to the connecting rod pairing mark, and put it in order.

3) Use a rubber hammer or hammer wooden handle to push out the piston connecting rod assembly of the cylinder respectively, catch and take out the piston connecting rod assembly at the cylinder outlet by hand, pay attention to the piston installation direction. 4) Install the connecting rod bearing cover, connecting rod bolt and nut back in their original position, and the connecting rods of different cylinders cannot be exchanged with each other. 5) disassemble the piston connecting rod group of the cylinder with a sample method.

4. Disassemble the engine crankshaft flywheel group 1) Loosen the fastening screws of the flywheel, disassemble the flywheel, the flywheel is heavier, and pay attention to safety when disassembling. 2) Remove the sealing flange and oil seal at the front and rear end of the crankshaft. 3) According to the requirements of the textbook, loosen the fastening screws of the main bearing cover of the crankshaft from both ends to the middle, and pay attention to the assembly mark and orientation of the main bearing cover, and the main bearing cover and bearing pads of different cylinders can not be exchanged with each other.

4) Lift down.

Do you know how to repair an airplane, there are three steps to disassembling and assembling the engine.

Automotive knowledge: Detailed explanation of engine disassembly steps.

The line pipeline is dismantled first, then the wavebox is dismantled, and then the top platform is found to resist the engine and remove the footing rubber to lower the engine.

The process of disassembling and assembling the engine: 1. Remove the fixing screw of the cylinder head, pay attention to the screw should be loosened from both ends to the middle, and remove the screw in 3 times; 2. Lift down the cylinder head, remove the cylinder gasket, pay attention to the installation direction of the cylinder gasket, loosen the oil drain screws of the oil pan, and release the oil in the oil pan; 3. Turn over the engine, disassemble the oil pan fixing screw, remove the oil pan and oil pan sealing gasket, loosen the oil coarse filter fixing screw, disassemble the oil filter, oil pump sprocket and oil pump; 4, rotate the crankshaft, make the engine cylinder piston at the bottom dead center, disassemble the fastening nut of the connecting rod of the cylinder respectively, remove the connecting rod bearing cover, pay attention to the connecting rod pairing mark, and put it in order; 5. The connecting rod bearing cover, connecting rod bolt, nut are installed back in the original position, and the connecting rods of different cylinders can not be exchanged with each other, and the piston connecting rod group of the cylinder is disassembled by the sample method.

First, remove the battery ground wire, drain the coolant, remove the cover and baffle, remove the tubing and other pipes, and remove the flywheel cover. Put it back in the opposite direction. The specific steps are as follows:

1.Remove the battery grounding wire to avoid accidental damage to the electrical equipment.

2.Adjust the empty switch to the "warm air" position to ensure that the coolant can be drained completely.

3.Open the radiator cap and coolant drum lid and remove the pump large circulation connection hose.

4.Unplug the dual temperature switch of the radiator and the connecting plug of the electric fan.

5.Remove the engine hood and bezel. First, loosen the six nuts that hold the front cover and the left and right fixing bolts of the radiator in place, and then remove the front bumper. Loosen the four hex retaining nuts on the front of the front hood and remove the front hood.

6.Unplug the generator and the empty compressor. At the same time, remove the radiator.

7.Remove the inlet pipe from the gasoline pump.

8.Remove the air filter and air guide hood above the carburetor, and seal the opening on the carburetor with a film to prevent foreign matter from falling off.

9.Unplug the coolant hose on the carburetor and the coolant hose connecting the generator to the heater.

10.Unplug the wire plug on the coolant temperature sensor and the wire plug on the starter.

11.Loosen the cover of the rear engine bracket and remove the exhaust pipe.

12.Remove the fixing bolts on the engine and transmission, as well as the bolts on the rear suspension of the engine, as well as the flywheel cover.

The engine installation sequence is reversed from disassembly, and the control cables, flexible shafts, tubing, and cables are installed in the correct position. After installation, check and adjust the following items: free stroke of the throttle cable; adjust the free travel of the rear brake; Adjust the free travel of the rear brake light switch. ==

Steps to remove the engine: 1. Remove the battery cable to avoid accidental damage to the electrical equipment; 2. Adjust the air conditioner switch to the warm windshield to ensure that the coolant can be completely discharged; 3. Open the radiator cover and coolant barrel cover, and remove the hose of the large circulation interface of the water pump; 4. The connecting plug of the double temperature switch of the radiator and the electric fan under the cherry blossom; 5. Remove the front hood and baffle of the engine, first loosen the six nuts that fix the cover plate of the front auspicious difference cover and the two fixing bolts on the left and right of the radiator, remove the front bumper, loosen the four hexagonal fixing nuts in front of the front cover, and remove the front cover; 6. Unplug the wiring plugs of the generator and air conditioning compressor, and remove the radiator of the Nianyancong at the same time; 7. Remove the oil inlet pipe on the gasoline pump; 8. Remove the air filter and the deflector above the carburetor, and seal the upper mouth of the carburetor with a film; 9. Unplug the coolant hose on the carburetor and the coolant hose connected to the generator and the heater; 10. Loosen the cover plate of the rear bracket of the engine and remove the exhaust pipe.

Disassemble the engine in the order of machine, assembly, component, assembly and parts. When disassembling, pay attention to proofreading the assembly marks to ensure the original assembly. When disassembling various threaded joints, only by disassembling them in a professional symmetrical order can Busun ensure the complete disassembly of the threaded joints.

Disassembly of engine block components.

1.Place the engine vertically.

2.Remove the set screws of the cylinder head. Note that the screws should be loosened crosswise from both ends to the middle, and the screws should be removed in three steps.

3.Lift the cylinder head, remove the cylinder head gasket, and pay attention to the mounting direction of the cylinder head gasket. Loosen the drain screws of the oil pan and drain the oil from the oil pan.

4.Turn over the motor, remove the oil pan fixing screws (note that the screws should also be loosened from both ends to the middle), remove the oil pan and oil pan gasket. Loosen the set screws of the primary filter and remove the primary filter, oil pump sprocket, and oil pump.

Disassembly of engine piston linkage sets.

1.Turn the crankshaft so that the pistons of the engines 1 and 4 are at the bottom dead center. Remove the fastening nuts of the connecting rod cluster and the 4-cylinder respectively, remove the connecting rod bearing cover, pay attention to the matching mark of the connecting rod, and place it neatly.

Gently push out the piston connecting rod assembly of the 1st and 4th cylinders with a hammer, grasp and take out the piston connecting rod assembly at the outlet of the cylinder with your hand, and pay attention to the piston installation direction.

2.Put the connecting rod bearing cover, connecting rod bolt and nut back in place, and the connecting rods of different cylinders are not interchangeable. Disassemble the piston linkage sets of cylinders 2 and 3 in the same way.

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