澳门现金娱乐网投

The mixer truck is not strong in winter, depending on whether you treat it so well! -Mixer truck_Concrete mixer truck price video pictures in Chengli mixer truck network

Welcome to Chengli Mixer Truck, China's leader in high-end mixer trucks and concrete mixer trucks!
183-7222-3611

The mixer truck is not strong in winter, depending on whether you treat it so well!
2019/11/25 10:58:33 Source: Mixer manufacturer

搅拌车 车主已经开始着手进行车辆冬季保养,但是在保养之前,这十个禁忌还是要牢记。 The beginning of winter season has passed, and the chill is stronger. The experienced mixer owners have begun to carry out winter maintenance of the vehicles, but before maintenance, these ten taboos must be kept in mind.

Don't know what are the taboos? 小编给你细细道来。 Let Xiaobian take care of you.

First bogey

忌机油只加不换 Don't change oil for concrete mixer truck

Motor oil is indispensable in the use of diesel engines, and mainly plays the role of lubrication, cooling and cleaning. Therefore, many drivers will pay attention to check the amount of lubricating oil and add it according to the standard, but they ignore the inspection of the quality of the lubricating oil and the replacement of the deteriorated oil, resulting in the moving parts of some engines always in poor lubrication Operating in the environment, thereby accelerating the wear of various parts. Under normal circumstances, the loss of engine oil is not great, but it is easily contaminated, thereby losing the role of protecting the diesel engine. During the operation of the diesel engine, many pollutants (soot, soot, and fouling generated by incomplete combustion of fuel) will enter the engine oil. For new or overhauled machinery, there will be more impurities after trial operation. If it is rushed to use only if it is not replaced, it may easily cause accidents such as burning of the tile and holding the shaft. In addition, even if the engine oil is changed, some drivers will not thoroughly clean the oil passage during the replacement due to lack of maintenance experience or save trouble, so that mechanical impurities still remain in the oil pan and the oil circuit.

搅拌车图片

Second bogey

Concrete mixing truck avoid butter and messy coating

● Butter the cylinder pads. Butter is a commonly used grease in the repair of construction machinery, which can play a role of lubrication and sealing. Therefore, some repairmen will apply a layer of butter to the cylinder gasket when installing the cylinder gasket, which is believed to increase the tightness of the diesel engine. As everyone knows, this will actually affect the working performance of the diesel engine. Cylinder gasket is the most important seal between the cylinder block and the cylinder head of the diesel engine. It can not only seal the high temperature and high pressure gas generated in the cylinder, but also seal the cooling water and lubricant in the cylinder head and cylinder. When installing the cylinder gasket, pay special attention to its sealing quality. If grease is applied to the cylinder pad during installation, when the cylinder head bolts are tightened, a part of the butter will be squeezed into the cylinder waterway and oil passage. The butter remaining between the cylinder pads will flow into the cylinder due to the high temperature during the work of the cylinder. The cylinder burns, and the other part remains on the joint surface between the cylinder block and the cylinder head, creating a gap between the cylinder head, the cylinder head and the plane of the body. High-temperature and high-pressure gas can easily hit the cylinder head from here, destroy the cylinder head, and cause air leakage. . In addition, when the butter is in a high temperature for a long time, it will also cause carbon deposits, which will cause premature aging and deterioration of the cylinder liner. Therefore, do not apply butter when installing the cylinder gasket. If you cannot achieve the sealing effect, you can add a few more gaskets, so that the above situation will not occur and the effect is better.

● Butter the tire nut. In order to easily tighten the nut and prevent rust, many repairmen apply anti-rust oil to the bolt and nut of the tire. This is actually a wrong approach. Because after the tire nut is tightened, there is a self-locking feature between the threads. This is because the thread helix angle is smaller than the equivalent friction angle between the threads. In a given bolt connection, the spiral lift angle is a certain value, and the equivalent friction angle varies with the friction state between the threads. Obviously, after oiling, the equivalent friction angle between the threads is reduced, and the self-locking performance of the bolt connection is deteriorated. Therefore, never grease or drip oil on the tire bolts and nuts. Doing so will loosen the nut and even cause an accident.


Third bogey

New concrete mixer truck avoids cylinder liners and pistons

Install without options

When replacing cylinder liners and pistons, the new cylinder liners and pistons are considered standard parts and are interchangeable, so they can be used after being installed. In fact, the dimensions of the cylinder liner and the piston have a certain tolerance range. For example, if the largest size cylinder sleeve is fitted with the smallest size piston, the fit clearance will be too large, resulting in weak compression and difficulty in starting. Therefore, the size group code of the standard cylinder liner and piston must be checked during the replacement. The size group code of the standard piston and the piston must be the same as the size group code of the standard cylinder liner. Only in this way can the two be guaranteed. With standard fit clearance. In addition, when the cylinders and pistons of the same group code are installed in each cylinder, pay attention to the inspection of cylinder plug clearance before installation. In order to ensure the assembly standard, a test should be performed before installation to prevent fake and inferior products from being installed. . 福田搅拌车图片


Fourth taboo

Concrete mixer trucks do not check the plunger stroke margin

In the adjustment of the plunger fuel injection pump, many maintenance personnel do not pay attention to check the plunger stroke margin. The stroke allowance of the plunger refers to the amount of movement that the plunger can continue to move upward after being pushed by the cam on the camshaft to the top dead center. After adjusting the oil supply start time, the reason for checking the stroke margin is because the stroke margin of the plunger is related to the wear of the plunger and the sleeve. After the plunger and the sleeve are worn, the plunger needs to move up a little more to start the oil supply, which delays the start of the oil supply. When the adjustment bolt is unscrewed or a thicker adjustment block or washer is used, the lowest position of the plunger is moved up, so that the stroke allowance of the plunger is reduced. Therefore, when repairing and debugging the fuel injection pump, the stroke margin should be checked first to determine whether the fuel injection pump can still be adjusted. During the inspection, the following different methods should be adopted according to the different structures of the fuel injection pump: a) After turning the camshaft, pushing the plunger to the top dead center, remove the oil outlet valve and valve seat, and measure with a depth vernier. b) After the plunger is pushed to the top dead center, use a screwdriver to pry up the spring seat of the plunger spring to raise the plunger to the highest point. Then use a thick gauge to measure between the lower plane of the plunger and the tappet adjustment bolt. The standard stroke allowance of the plunger is about 1.5mm, and the limit stroke allowance after wear should not be less than 0.5mm.


Fifth taboo

Cylinder gap measurement is not allowed for concrete mixer truck

When measuring the cylinder clearance, the piston skirt was not measured in a direction perpendicular to the piston pin hole, and was measured in other directions. The structural characteristics of the aluminum alloy piston are that the upper part is smaller, the lower part is larger, and it is a cone, and the partial cross section is oval, so the cylinder clearances along the circumferential direction are not equal. During the measurement, the clearance in the direction of the major axis of the ellipse shall prevail, that is, the clearance between the piston skirt and the direction of the piston pin hole shall be measured. This measurement is more convenient and accurate, and in the reciprocating motion, the direction of the piston skirt perpendicular to the piston pin hole is subject to greater wear due to the lateral pressure. Therefore, when measuring the cylinder clearance, the piston skirt should be perpendicular to the piston Measure the direction of the pin hole.

Sixth taboo

Concrete mixer truck avoid fire and open flame heating

Due to the interference fit between the piston and the piston pin, the piston should be heated and expanded when installing the piston pin. At this time, some maintenance personnel will directly heat the piston on an open flame. The thickness of each part of the piston is uneven, and the degree of thermal expansion and contraction will be different. The heating of the open flame will cause the piston to be unevenly heated and easily cause deformation; carbon ash will also adhere to the surface of the piston, reducing the service life of the piston. If the piston naturally cools after reaching a certain temperature, its metallographic structure will be damaged and the wear resistance will be greatly reduced, and its service life will be significantly shortened. When installing the piston pin, the piston can be evenly heated in hot oil to make it expand slowly. Do not directly heat it with an open flame.


Seventh bogey

Abrasive cloth is not used to grind bearing pads for concrete mixer trucks

For some inexperienced repairmen, the bearing bush is a difficult job. Because the scraping technique is difficult to master, it is difficult for the bearing bush to meet the technical requirements. Therefore, when someone replaces the bearing bush, it is necessary to increase the bearing bush and crankshaft. The contact area, use abrasive cloth to replace the scraper. This method is extremely undesirable in actual maintenance, because the abrasive particles on the abrasive cloth are harder, and the material of the bearing pad is softer. In this way, the sand particles can be easily embedded in the alloy during grinding. The diesel engine will accelerate the wear of the journal and shorten the time. Crankshaft life.


Eighth Taboo

Do not overtighten the bolts of the concrete mixer truck

During the disassembly and assembly of construction machinery, many parts of the bolts have specified torque requirements, such as transmission boxes, cylinder heads, tires, connecting rods, and front axles. The tightening torques are specified in the instructions. Feel free to change. However, many users mistakenly believe that it is safer to tighten tightly, but tightening too tightly may cause the screws or bolts to break, and may cause failure due to the thread or nut sliding buckle.


Ninth Taboo

Concrete mixer trucks avoid too high tire pressure

The tire inflation pressure of wheeled construction machinery is an important factor that determines its service life and work efficiency. Too high or low tire pressure will affect its service life, and it is also not conducive to safe driving, especially in the hot summer. The scientific inflation standard should be: take the tire's standard air pressure as a benchmark, and as the temperature changes, slightly adjust the tire air pressure. For example: summer should be 5% -7% lower than winter. Considering that the summer temperature is high, the gas is heated, and the pressure is increased, on the contrary, it must reach the standard pressure or a little higher in winter.

搅拌车图片

Tenth taboo

Concrete mixer truck avoids adding cold water to the water tank

Engine overload operation, poor heat dissipation or lack of water in the water tank will cause the water tank to open. At this time, if cold water is added immediately, the cylinder head and cylinder will burst due to thermal expansion and contraction. Therefore, once the water tank is found to be in use during the use, emergency measures should be taken to stop the operation to cool the cooling water of the diesel engine by itself.

搅拌车 车主已经开始着手进行车辆冬季保养,但是在保养之前,这十个禁忌还是要牢记。 The beginning of winter season has passed, and the chill is stronger. The experienced mixer owners have begun to carry out winter maintenance of the vehicles, but before maintenance, these ten taboos must be kept in mind.

Don't know what are the taboos? 小编给你细细道来。 Let Xiaobian take care of you.

First bogey

忌机油只加不换 Don't change oil for concrete mixer truck

Motor oil is indispensable in the use of diesel engines, and mainly plays the role of lubrication, cooling and cleaning. Therefore, many drivers will pay attention to check the amount of lubricating oil and add it according to the standard, but they ignore the inspection of the quality of the lubricating oil and the replacement of the deteriorated oil, resulting in the moving parts of some engines always in poor lubrication Operating in the environment, thereby accelerating the wear of various parts. Under normal circumstances, the loss of engine oil is not great, but it is easily contaminated, thereby losing the role of protecting the diesel engine. During the operation of the diesel engine, many pollutants (soot, soot, and fouling generated by incomplete combustion of fuel) will enter the engine oil. For new or overhauled machinery, there will be more impurities after trial operation. If it is rushed to use only if it is not replaced, it may easily cause accidents such as burning of the tile and holding the shaft. In addition, even if the engine oil is changed, some drivers will not thoroughly clean the oil passage during the replacement due to lack of maintenance experience or save trouble, so that mechanical impurities still remain in the oil pan and the oil circuit.

搅拌车图片

Second bogey

Concrete mixing truck avoid butter and messy coating

● Butter the cylinder pads. Butter is a commonly used grease in the repair of construction machinery, which can play a role of lubrication and sealing. Therefore, some repairmen will apply a layer of butter to the cylinder gasket when installing the cylinder gasket, which is believed to increase the tightness of the diesel engine. As everyone knows, this will actually affect the working performance of the diesel engine. Cylinder gasket is the most important seal between the cylinder block and the cylinder head of the diesel engine. It can not only seal the high temperature and high pressure gas generated in the cylinder, but also seal the cooling water and lubricant in the cylinder head and cylinder. When installing the cylinder gasket, pay special attention to its sealing quality. If grease is applied to the cylinder pad during installation, when the cylinder head bolts are tightened, a part of the butter will be squeezed into the cylinder waterway and oil passage. The butter remaining between the cylinder pads will flow into the cylinder due to the high temperature during the work of the cylinder. The cylinder burns, and the other part remains on the joint surface between the cylinder block and the cylinder head, creating a gap between the cylinder head, the cylinder head and the plane of the body. High-temperature and high-pressure gas can easily hit the cylinder head from here, destroy the cylinder head, and cause air leakage. . In addition, when the butter is in a high temperature for a long time, it will also cause carbon deposits, which will cause premature aging and deterioration of the cylinder liner. Therefore, do not apply butter when installing the cylinder gasket. If you cannot achieve the sealing effect, you can add a few more gaskets, so that the above situation will not occur and the effect is better.

● Butter the tire nut. In order to easily tighten the nut and prevent rust, many repairmen apply anti-rust oil to the bolt and nut of the tire. This is actually a wrong approach. Because after the tire nut is tightened, there is a self-locking feature between the threads. This is because the thread helix angle is smaller than the equivalent friction angle between the threads. In a given bolt connection, the spiral lift angle is a certain value, and the equivalent friction angle varies with the friction state between the threads. Obviously, after oiling, the equivalent friction angle between the threads is reduced, and the self-locking performance of the bolt connection is deteriorated. Therefore, never grease or drip oil on the tire bolts and nuts. Doing so will loosen the nut and even cause an accident.


Third bogey

New concrete mixer truck avoids cylinder liners and pistons

Install without options

When replacing cylinder liners and pistons, the new cylinder liners and pistons are considered standard parts and are interchangeable, so they can be used after being installed. In fact, the dimensions of the cylinder liner and the piston have a certain tolerance range. For example, if the largest size cylinder sleeve is fitted with the smallest size piston, the fit clearance will be too large, resulting in weak compression and difficulty in starting. Therefore, the size group code of the standard cylinder liner and piston must be checked during the replacement. The size group code of the standard piston and the piston must be the same as the size group code of the standard cylinder liner. Only in this way can the two be guaranteed. With standard fit clearance. In addition, when the cylinders and pistons of the same group code are installed in each cylinder, pay attention to the inspection of cylinder plug clearance before installation. In order to ensure the assembly standard, a test should be performed before installation to prevent fake and inferior products from being installed. . 福田搅拌车图片


Fourth taboo

Concrete mixer trucks do not check the plunger stroke margin

In the adjustment of the plunger fuel injection pump, many maintenance personnel do not pay attention to check the plunger stroke margin. The stroke allowance of the plunger refers to the amount of movement that the plunger can continue to move upward after being pushed by the cam on the camshaft to the top dead center. After adjusting the oil supply start time, the reason for checking the stroke margin is because the stroke margin of the plunger is related to the wear of the plunger and the sleeve. After the plunger and the sleeve are worn, the plunger needs to move up a little more to start the oil supply, which delays the start of the oil supply. When the adjustment bolt is unscrewed or a thicker adjustment block or washer is used, the lowest position of the plunger is moved up, so that the stroke allowance of the plunger is reduced. Therefore, when repairing and debugging the fuel injection pump, the stroke margin should be checked first to determine whether the fuel injection pump can still be adjusted. During the inspection, the following different methods should be adopted according to the different structures of the fuel injection pump: a) After turning the camshaft, pushing the plunger to the top dead center, remove the oil outlet valve and valve seat, and measure with a depth vernier. b) After the plunger is pushed to the top dead center, use a screwdriver to pry up the spring seat of the plunger spring to raise the plunger to the highest point. Then use a thick gauge to measure between the lower plane of the plunger and the tappet adjustment bolt. The standard stroke allowance of the plunger is about 1.5mm, and the limit stroke allowance after wear should not be less than 0.5mm.


Fifth taboo

Cylinder gap measurement is not allowed for concrete mixer truck

When measuring the cylinder clearance, the piston skirt was not measured in a direction perpendicular to the piston pin hole, and was measured in other directions. The structural characteristics of the aluminum alloy piston are that the upper part is smaller, the lower part is larger, and it is a cone, and the partial cross section is oval, so the cylinder clearances along the circumferential direction are not equal. During the measurement, the clearance in the direction of the major axis of the ellipse shall prevail, that is, the clearance between the piston skirt and the direction of the piston pin hole shall be measured. This measurement is more convenient and accurate, and in the reciprocating motion, the direction of the piston skirt perpendicular to the piston pin hole is subject to greater wear due to the lateral pressure. Therefore, when measuring the cylinder clearance, the piston skirt should be perpendicular to the piston Measure the direction of the pin hole.

Sixth taboo

Concrete mixer truck avoid fire and open flame heating

Due to the interference fit between the piston and the piston pin, the piston should be heated and expanded when installing the piston pin. At this time, some maintenance personnel will directly heat the piston on an open flame. The thickness of each part of the piston is uneven, and the degree of thermal expansion and contraction will be different. The heating of the open flame will cause the piston to be unevenly heated and easily cause deformation; carbon ash will also adhere to the surface of the piston, reducing the service life of the piston. If the piston naturally cools after reaching a certain temperature, its metallographic structure will be damaged and the wear resistance will be greatly reduced, and its service life will be significantly shortened. When installing the piston pin, the piston can be evenly heated in hot oil to make it expand slowly. Do not directly heat it with an open flame.


Seventh bogey

Abrasive cloth is not used to grind bearing pads for concrete mixer trucks

For some inexperienced repairmen, the bearing bush is a difficult job. Because the scraper technology is difficult to master, it is difficult for the bearing bush to meet the technical requirements. Therefore, when replacing the bearing bush, some people have increased the bearing bush and the crankshaft. The contact area, use abrasive cloth to replace the scraper. This method is extremely undesirable in actual maintenance, because the abrasive particles on the abrasive cloth are harder, and the material of the bearing pad is softer. In this way, the abrasive particles are easily embedded in the alloy during grinding, and the diesel journal will accelerate the wear of the journal and shorten Crankshaft life.


Eighth Taboo

Do not overtighten the bolts of the concrete mixer truck

During the disassembly and assembly of construction machinery, many parts of the bolts have specified torque requirements, such as transmission boxes, cylinder heads, tires, connecting rods, and front axles. The tightening torques are specified in the instructions. Feel free to change. However, many users mistakenly believe that it is safer to tighten tightly, but tightening too tightly may cause the screws or bolts to break, and may cause failure due to the thread or nut sliding buckle.


Ninth Taboo

Concrete mixer trucks avoid too high tire pressure

The tire inflation pressure of wheeled construction machinery is an important factor that determines its service life and work efficiency. Too high or low tire pressure will affect its service life, and it is also not conducive to safe driving, especially in the hot summer. The scientific inflation standard should be: take the tire's standard air pressure as a benchmark, and as the temperature changes, slightly adjust the tire air pressure. For example: summer should be 5% -7% lower than winter. Considering that the summer temperature is high, the gas is heated, and the pressure is increased, on the contrary, it must reach the standard pressure or a little higher in winter.

搅拌车图片

Tenth taboo

Concrete mixer truck avoids adding cold water to the water tank

Engine overload operation, poor heat dissipation or lack of water in the water tank will cause the water tank to open. At this time, if cold water is added immediately, the cylinder head and cylinder will burst due to thermal expansion and contraction. Therefore, once the water tank is found to be in use during the use, emergency measures should be taken to stop the operation to cool the cooling water of the diesel engine by itself.

Previous post: Class lessons for old drivers to save fuel!
Next: No information

澳门现金娱乐网投

Sales Manager : Manager Liu

Car purchase phone : 183-7222-3611

Address : No. 1, Dali Road, Liangshui Avenue, Suizhou City, Hubei Province

After sales service

○ Technical training program

○ After-sales service

○ Free maintenance plan and deadline

○ Parts supply and price

We are the mixer truck, cement mixer truck and concrete mixer truck.

  • Copyright ? lemoenbos.com Hubei ICP No. 15005532-331
  • Chengli mixer truck network, China's leader in high-end mixer trucks, concrete mixer trucks