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Let's put it bluntly. When a domestic car travels about 100,000 km, it needs to be overhauled. Imported vehicles can be overhauled after driving more than 150,000 km.
After a major overhaul, the engine's performance can be restored to more than 90% of its previous performance. However, it is not necessary to overhaul the mileage, and it is generally based on meeting the requirements of 100,000 km of domestic cars or 150,000 km of imported cars, and the following aspects are carried out:
Inspection of engine overhaul:
1.When the oil consumption is serious and the engine is weak, there is no oil leakage.
If there is an oil leak, it is likely to be caused by aging of the valve seal, or it may be caused by the notched alignment of the piston rings. In both cases, the overhaul of these two auto parts groups should be prioritized before deciding whether an overhaul of the engine is required.
2.When the engine has an abnormal noise.
If the engine is found to have a severe knocking sound or if the engine has severe ablation of the size of the pad and the crankshaft is severely worn, an overhaul should be considered.
3.When the cylinder is worn to the overhaul standard.
Regardless of the phenomenon of the car, the final decision on whether to overhaul the standard time of the cylinder wear amount, the cylinder out of circle to reach every 100mm bore wear, or the cylinder cone wear to reach every 100mm bore wear, as long as one of these two conditions is met, should be considered for overhaul.
Overhaul is not equal to major repair, overhaul is a proper term in the automobile repair industry, with its fixed items and costs, of which boring cylinder is one of the main items. The maintenance cost of car overhaul is relatively high in car repair. Hyundai Motor Overhaul Engine is the repair project with the most complex maintenance process, the most maintenance tools and equipment, the longest man-hours, and the most precise degree of standardization of maintenance technology.
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When the car is overhauled, the size of the crankshaft of the car: it needs to be divided into large tiles and small tiles The large tiles are the tiles used in the middle of the large tiles and the crankshaft The good and bad of the large tiles directly affect whether the whole crankshaft is running in a line The small tiles are the standard of the tiles are more accurate and will affect the power of the automobile engine The parameters of each small tile are basically different The small tiles are the connecting rod crankshaft if it is a 4-cylinder engine crankshaft is composed of cylinder block, cylinder head, piston, connecting rod, crankshaft and flywheel. This is the engine to generate power, and the linear reciprocating motion of the piston into the crankshaft rotation motion and output power to the outside The pad parameters of each cylinder are not the same, which will lead to the vaping cylinder and the broken piston ring, so the good and bad of the size of the tile directly affect the power of the car, the temperature of the engine, and the process looks very simple, but it must be accurate.
Measures for engine shingles:
1. Clean the connecting rod, install the connecting rod bearing, apply a little oil on the surface of the bearing, wash the connecting rod journal of the crankshaft, load the connecting rod into the corresponding journal, pay attention to the front and rear direction of the connecting rod, and the direction of the tile mouth do not install it in reverse, 2. Then tighten the connecting rod bolt to the specified torque in three times (each time it is tightened, you can rotate the crankshaft or connecting rod to see if the rotation is flexible), after the connecting rod bolt is tightened to the specified torque, the connecting rod should rotate flexibly and not loose.
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There is no need to change the crankshaft. Just grind it. Large and small tiles.
Piston. piston rings, and cylinders. Valve.
Clutch plates. Belt. In the right era, (water pump, timing wheel, connecting rod is not necessary to change) there is also a full set of pads, and the estimated cost is about 1500 yuan
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If it is an overhaul, as long as the crankshaft is not strained, there is no need to replace, only need to replace the standard crankshaft pads, connecting rod pads, intake and exhaust valves, pistons, cylinder liners, piston rings, engine up and down repair kits, timing belts and tensioners on it, as for the clutch three-piece set to depend on the situation, excluding the cost of the clutch, it should be about 1200, and the clutch three-piece set is about 300.
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According to what you want to exchange, including the cost of working hours, it will be close to 3,000 yuan.
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The 490 engine is changed to crankshaft, size tile, steel and copper, piston connecting rod, a total of about 1500.
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Hello, about 1700 to 2500 hundred yuan, processing, engine oil, brother to adopt the next [car questions, ask the car master. 4S shop professional technician, 10 minutes to solve. 】
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**In more than 1,200 or so [car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】
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Take good care of it, and like a new car, be sure to buy the best accessories.
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Check whether there is a blockage in the oil channel, check whether the oil pressure regulating valve is stuck and the pressure is too low, and measure whether the crankshaft connecting rod pad is too large.
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Then the situation you are talking about should be caused by too large a gap.
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It is very likely that the timing is not aligned, and what is the smoke color?
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In this way, it is estimated that the problem of gas mixtures is the main one.
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Just change the tile, pay tens of yuan for the small tile, repair cost two or three hundred yuan, if you want to change the crankshaft, the price of the crankshaft is different depending on the car, ** is also different. The repair cost is more than 1,000 yuan.
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Lack of oil or lubrication failure, engine burst, belongs to the category of overhaul, maintenance costs will not be very low, need local specific consultation, talk about the maintenance and replacement of parts, not to mention the model, replace the size of the bearing, the use of special equipment grinding crankshaft, maintenance and replacement of cylinder piston piston rings, maintenance of cylinder head and cylinder head internal parts camshaft and bearing rocker arm rocker arm shaft, etc., check the oil pump, other ancillary materials, accessories ** online check,
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The four-cylinder engine has burst tiles, and the repair cost needs to be determined according to the repair situation. Just to change the tile, pay dozens of yuan for the small tile, and repair the cost of two or three hundred yuan; If you want to change the crankshaft, the price of the crankshaft varies from car to car. The repair cost is more than 1,000 yuan.
An engine is a machine that can convert other forms of energy into mechanical energy, such as internal combustion engines (gasoline engines, etc.), external combustion engines (Stirling engines, steam engines, etc.), electric motors, etc. For example, the internal combustion engine usually converts chemical energy into mechanical energy. An engine applies to both a power generation unit and an entire machine including a power unit (e.g
gasoline engines, aero engines). The engine was first born in England, so the concept of the engine also originated from the English language, and its original meaning refers to the "mechanical device that produces power".
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It's just more than 300 if you change tiles, and if you still have crankshafts, it's different, thousands.
Let me give you an analysis of this problem, first of all, the clutch you said, the clutch itself is bad, and it can't be separated, so the clutch has nothing to do with you. Secondly, the drive shaft you said should be the crankshaft, the crankshaft is impossible to break under normal circumstances, unless the quality of the crankshaft is not up to standard, the car is overloaded for a long time, and the crankshaft will be broken when it reaches the overhaul period, and it is impossible to damage it if you only drive 10 kilometers. Again, the cylinder block you said is pulled, it is even more unlikely that you broke it, it is because the oil is unqualified or the lack of engine oil, as well as the cooling water is not good, the heat dissipation conditions are worse and other reasons, you can only blame the oil and coolant he uses is not good, and it has nothing to do with you. >>>More
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Although engine overhaul is a general concept, there is also the so-called "engine overhaul package", but the overhaul engine we usually talk about is mostly for the core components of the engine such as cylinder liners, pistons and valves, including boring cylinders, grinding valves, grinding shafts, cold-pressed ducts and other processes and valve oil seals, front and rear crankshaft oil seals, camshaft oil seals, piston rings, timing chains, tensioners, crankshaft bearings, connecting rod bearings and other extended operations. >>>More
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Hello! For this model, if the replacement of the engine, it must not be able to be reviewed normally, for the engine, this can not be changed privately, even if the same model of engine is modified, it is also necessary to go to the vehicle management for the record.