What does it take to remove a car engine?

Precautions when disassembling the engine: 1. Disassemble the engine after it cools down. Disassembly after the engine is cooled, one is easy to disassemble, and the other is to prevent deformation during disassembly, because the temperature is high, the rigidity becomes weak, and it is easy to deform.

2. Do not warp and deform the oil pan when disassembled. Do not warp hard and deform at high temperatures, otherwise oil leakage after installation. Best way:

Use special tools when dismantling. 3. The bolts should be disassembled in order. The purpose of sequential disassembly is to prevent breakage or deformation during disassembly, etc.

Replace the engine should first pay attention to the relevant procedures of the engine, whether there is a corresponding certificate, whether the packaging is complete, whether the wooden box of the packaging is clearly marked, in principle, the replacement of the engine is to the vehicle management for change, the engine number should be the new number, the general number is mainly due to the engine does not have a certificate or to avoid the cumbersome procedures of the change of the place to be sealed with glue, the body glue on the body, the periphery of the general sealant, some places need to add paper pads, can not be negligent and so on.

Screws are tightened, screwed (not screwed) connecting rod screws, rotating part of the screws should be glued, and special tools should be used if there are special tools! After installation, check it again, and you can load it if there is no problem. If you change an engine without permission, the change in weight will cause the load on the suspension to change, which in turn may affect the height of the body, then the angle between the several transmission joints of the propeller shaft, and finally your safety.

When I was in class, I saw the kind of cases where the suspension stiffness was adjusted without permission, and the propeller shaft was thrown out, and the car was destroyed and people died, not alarmist and so on.

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 cannot be exchanged with each other. Lift down the crankshaft, then put the main bearing cover and spacer back in place, and screw the set screws in a little. Pay attention to the positioning of the crankshaft thrust bearing and the installation direction of the opening, etc.

Precautions for engine disassembly: do not heat up the engine disassembly, do not knock directly, do not disassemble indiscriminately, do not make marks, and use tools indiscriminately. Disassembling the engine can not be disassembled in the state of the engine heating up, and waiting for it to be completely cold at the beginning, otherwise the strength of the material will decrease when the thermal expansion is reduced, and the external force will be damaged during disassembly.

The engine is a precision instrument, and appropriate tools should be used to disassemble it, and wrenches and sleeves should be used.

The original identity certificate of the owner of the motor vehicle (for mainland residents residing in the place of temporary residence, the identity certificate is the "Resident Identity Card" or "Temporary Resident Identity Card", as well as the residence or temporary residence certificate issued by the public security organ);

3. If the person is the first person, the original and copy of the identity certificate of the person shall also be submitted (if the person is a unit, the original and copy of the identity certificate of the person in charge shall also be submitted), as well as the written entrustment of the owner of the motor vehicle;

4. Motor vehicle registration certificate;

5. Motor vehicle driving license;

6. Motor vehicle inspection record form.

It should be noted that it should be removed after cooling, and it must be noted that the oil pan is disassembled without warping, which is prone to some dangers, and it must be noted that the surrounding environment must be very clean.

When disassembling the engine, it should be disassembled when the car is not started, and then be careful not to damage other structures.

Be sure to use the right way, don't disassemble it yourself, be sure to go to the 4S shop to disassemble it, and ask a professional person to repair it.

When disassembling the engine, you must keep the parts, otherwise you will not find the parts when the engine is installed.

The disassembly and assembly of the automobile engine should not be hard at high temperatures. 1. Disassemble the engine after cooling

First, it is easy to disassemble.

The second is to prevent deformation during disassembly, because the temperature is high, the rigidity becomes weak, and it is easy to deform.

2. Do not warp and deform the oil pan when disassembling the oil pan: Wuling B series engine uses an iron oil pan, because there is glue on it when disassembled, so it is not easy to disassemble, do not warp hard at high temperature, deformation, otherwise oil leakage after installation. Best way:

Use special tools when dismantling.

The focus of the car engine:

1. The fan motor does not move or the fan clutch is faulty, and it cannot be cooled down normally.

2. The three-way catalytic converter is blocked or the tube is ruptured, resulting in the exhaust being blocked, resulting in overheating of the engine.

3. The pipe of the cooling system is ruptured, resulting in the loss of coolant and the heat dissipation cannot operate normally.

4. After the long-term use of the water pump is highly worn, the parts are worn out and fall off.

5. If the pressure of the cover of the radiator is different, it will cause the spring to loosen and the cover cannot be tightly closed.

Answer: The original identity certificate of the owner of the motor vehicle (for mainland residents residing in the place of temporary residence, the identity certificate is the "Resident Identity Card" or "Temporary Resident Identity Card", as well as the residence or temporary residence certificate issued by the public security organ);

3. If the person is the first person, the original and copy of the identity certificate of the person shall also be submitted (if the person is a unit, the original and copy of the identity certificate of the person in charge shall also be submitted), as well as the written entrustment of the owner of the motor vehicle;

4. Motor vehicle registration certificate;

5. Motor vehicle driving license;

6. Motor vehicle inspection record form.

Wipe down the area where you used to have a steel stamp on the engine, apply a thin layer of red ink, and then stick it off with wide tape.

Because the engine number is marked, so the height is different, so use this method to stick the adhesive tape on the place where the engine you bought is stamped. Polished the old steel stamp in advance, and then the steel stamp was bought as big as it was, and it was marked according to the number on the tape, and 90% of the old orange questions were not answered.

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1. Ordinary wrench:

Wrenches include open-end wrenches, torx wrenches, socket wrenches, adjustable wrenches, torque wrenches, and Allen wrenches. The size of the opening of the selected wrench must match the size of the bolt or nut, as the opening of the wrench is too large and can slip and damage the hexagonal part of the nut.

2. Screwdriver: Screwdriver includes slotted screwdriver and cross-shaped screwdriver. The selection of the screwdriver model specification should be based on the width of the groove as the principle, and it should not be operated live; When using, in addition to applying torsion, appropriate axial force should also be applied to prevent slippage and damage to the parts; Do not pry anything with a screwdriver.

3. Hand hammer: Hand hammer includes fitter hammer. When using a hand hammer, remember to double-check that the hammer head and hammer handle are wedged securely, and that the hammer should be held against the back of the hammer handle.

4. Needle-nose pliers, piston ring disassembly pliers:

When using, pay attention to the cutting edge should not be facing yourself, put it back in its original place after use, and place it in a place that is not easy for children to contact to avoid injury.

A set of Starden tools, including quick wrenches, open-end wrenches, torx wrenches, etc.

The most used is the T-rod and the inner six of 8 to 10.

1.Replace the engine, disassemble: water pump, V-belt, toothed belt, water pump pulley, crankshaft pulley, mechanical pump, oil filter, valve cover, clutch assembly, etc.

2.The role of the engine is to provide power for the car, which determines the power, economy, stability and environmental protection of the car. According to the power of the family, automobile engines can be divided into diesel Zhaoxun gas engine, gasoline engine, electric vehicle motor and hybrid.

3.An engine is a machine that converts other forms of energy into mechanical energy. The engine is not only applicable to power generation devices, but also refers to the whole engine including power units (such as gasoline engines, aero engines).

Its types include internal combustion engines (gasoline engines, etc.). ).External combustion engines (Stirling engines, steam engines, etc.).

Gas turbines (racing cars), electric motors, etc.

1 step 1 The disassembly step of the motor should be disassembled in the order of the machine, components, components, components and parts: the engine is placed upright. Remove the set screws of the sail pants cylinder head.

Note that the screws are loosened from both ends to the middle, and the Jiankai screws are removed in three steps. Lift the cylinder head down, remove the cylinder head gasket, and pay attention to the mounting direction of the cylinder head gasket. Unscrew the drain screw of the oil pan and drain the oil from the oil pan.

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 primary oil filter retention screws and remove the oil filter, oil pump sprocket, and oil pump. 2 step 2 disassemble the engine piston connecting rod assembly:

Rotate the crankshaft to make the engine rotate 1, and the piston of cylinder 4 is positioned at the bottom dead center. Disassemble 1 separately, remove the fastening nut of the 4-cylinder connecting rod, remove the connecting rod bearing cover, pay attention to the fitting mark of the connecting rod, and place it in order. Gently push out 1. For the 4-cylinder piston connecting rod assembly, snap out the piston connecting rod assembly at the cylinder outlet by hand, and pay attention to the installation direction of the piston.

Replace the connecting rod bearing cover, connecting rod bolts and nuts in their original position. The connecting rods of different cylinders are not interchangeable. The piston connecting rod assembly of sampling disassembly method 2 and cylinder 3.

During the disassembly process, take care to check the assembly markings to ensure that they can be the same as when they were reassembled. When disassembling various threaded joints, they should be disassembled in a professional symmetrical order to ensure the complete disassembly of the threaded joints.