01 Remember that the oil should be replaced regularly. The oil is equivalent to the blood of construction machinery, and each oil needs regular replacement and maintenance. Oil as a lubricant for the normal operation of the engine is of course no exception, the oil is used for a long time, the oil viscosity decreases, the lubrication and cooling is poor, and the temperature in the engine is too high, and the cylinder piston is deformed at high temperature. In order to filter the impurities in the engine oil, the oil filter should also be replaced regularly.

02 Do not use inferior oil in the purchase of oil, do not buy inferior oil because of the desire for small and cheap, because the quality of the oil directly affects the service life of construction machinery and equipment, inferior oil makes the turbocharger poor lubrication, wear is too large, the intake effect is not good. It is recommended that you choose pure oil.

03 Different grades of oil can not be mixed with different varieties of oil in the production process to add chemical or physical effects of different additives, different additives mixed together may cause chemical reactions, in addition, the same manufacturer of the same grade of oil can not be mixed, can not cower this little cheap.

04 oil do not add the more the better to replace the oil when there are many misunderstandings, oil is not added the more the better, add more oil will cause a lot of harm, first of all, too much oil will reduce the engine output power, but also increase a certain amount of fuel consumption; Secondly, adding too much oil may also damage the oil seal, causing the engine to leak oil.

The excavator can rotate left and right in the work, and it cannot be separated from the rotary device, and the rotary support is an important part of the rotary mechanism. Excavator slewing support is mainly used to support the weight of the car body and bear the working load, and this part is also the place where the excavator is prone to failure. Since the slewing support of the excavator is generally working under large load conditions, and the working environment of the excavator is relatively harsh, the slewing support is easy to fail, and the most common is a variety of abnormal noises. Then when there is a strange sound, what will be the cause? What should be done to troubleshoot the problem?

First of all, it needs to be clear that when the slewing support is idling shortly after the factory, it will make a uniform sound of the steel ball rolling, which is a normal sound; If it has just been installed, the small abnormal sound does not matter, and it will generally disappear after a period of time. What we’re talking about today is louder and more specific sounds, and you need to pay attention when you hear a particular noise.

First, when the installation surface is uneven and the installation bolt is loose in the occurrence of abnormal noise, it is necessary to solve the problem of installation operation. When the roughness of the installation surface does not meet the requirements, it will cause the raceway to form a negative gap, resulting in abnormal noise; In addition, when the pinion mesh is not good, it may also produce abnormal sound, which will cause the fault of broken teeth; In addition, when the mounting bolt is loose, resulting in elastic deformation of the slewing support and negative clearance at the deformation position, you need to check immediately and tighten the bolt as required.

Second, there are foreign bodies in the slewing support When there are sand, iron filings and other foreign bodies in the slewing support, non-periodic vibration will occur, and there will be a failure of rotation inflexible. In this case, it is necessary to strictly clean the bearings, shafts, seat holes and matching parts before installation, and remove foreign bodies in the lubricant in time; Remember to avoid using plastic cages with impure materials or embedded foreign objects, so as to remove the corresponding abnormal noise.

Third, the abnormal sound caused by the grease problem is lubricated by the rotary bearing of the excavator, and the abnormal sound is likely to be caused by the lubrication problem. The common reasons are lack of grease in the raceway, uneven grease filling, poor quality aging of grease, and wrong selection of lubricants. To solve this problem, only the use of appropriate lubricants, timely filling, timely replacement can be solved.

Fourth, the abnormal sound caused by the damage of the seal to check whether the seal is worn, because the structure of the slewing bearing seal plays a key role in the sealing, when the seal and the slewing support can not be fully fitted, easy to cause grease leakage. In addition, the aging resistance and yellow oil resistance of the sealing strip material are also issues that need to be considered.

Fifth, the abnormal noise caused by cracks, indentation or rust when the rolling surface of the slewing support has cracks, indentation or rust, it also heard periodic vibration like riveting rivets, scars will occur continuously in the channel, scars on the steel ball will disappear and appear, and this noise varies with the installation and lubrication conditions. The liberation method is not to knock the bearing or use high viscosity grease when installing.

Sixth, the serious wear of the raceway and the rolling body excavator in the process of rotation abnormal sound, it is likely to be caused by the serious wear of the slewing support raceway and the rolling body, this time it is necessary to repair the slewing support.

Don’t use a bucket to pry open objects and dig
Why is that? Very simply, when you try to move an object, the lever principle will exert a force several times higher than the oil pressure on the bucket, especially the bucket teeth. This is particularly harmful to the bucket teeth, which is easy to crack and break the bucket teeth, such as tearing the front plate of the bucket and even cracking the bucket weld.

The bucket and forearm should be relatively fixed against the target, and then dragged backwards, the biggest advantage of this is that when a large stress is generated, the hydraulic system’s safety valve can automatically adjust the force used to the appropriate range. Avoid the use of buckets falling impact on rock operations

Just imagine, such a sudden smash down, the bucket and forearm joint to bear a considerable instant impact, there may be a large bending deformation, serious cracking.
Do not use this method of work, there are enough examples to prove that compared with normal operation, such a black operation will reduce the life of the bucket by about a quarter. Do not hit the object, too hurt the bucket

The third prohibited operation behavior is to use the impact force on the side wall of the bucket to move objects or the rotary force to move large objects.

Because when the bucket collides with the rock, the bucket, boom, working device and frame will produce excessive load, and the use of rotary force when moving large objects will also produce excessive load, greatly reducing the service life of the excavator.
Therefore, be sure to remember to be kind to your bucket, this operation is not allowed. High work rotating bucket teeth hit the rock

Do not use a rotating way to make the bucket cross objects! Doing so, on the one hand, will greatly speed up the wear rate of the bucket teeth, on the other hand, if the solid rock is encountered during the rotation process, it will also affect the big arm and the working device pin. Similarly, when using rotary to move large objects and using bucket side wall impact forces to move objects, the probability of cracks in the frame will be reduced by 1/2 compared to the normal use of excavation rack life.

John Doe

This excavator can be said to be a good buddy who accompanies the owner through thick and fast, and also a love machine who has made great contributions for the owner, and is usually driven by the owner himself, so it is very careful in the maintenance environment, including daily inspection, to ensure that the machine does not have a major failure, so although the machine is very long, But from beginning to end did not drop the chain to the boss at the critical moment, but the recent construction of the underground no small rain, just shut down the machine for nearly a week, and so on after the resumption of construction, the owner found that all the indicators on the dashboard are not bright, the owner suspected that there is a serious problem in the circuit, did not dare to look for the shear engineer to troubleshoot the problem immediately.
Troubleshooting process:

1. After the engineer rushed to the scene, he carefully understood the operation state of the machine for a recent period of time and whether there had been any problems in the circuit before. The owner recalled that the CPU insurance burned out not long ago and returned to normal after maintenance.

2, the maintenance master along this idea to check the CPU power line has no current, and then push the fuse box and the CPU line to continue to check, at this time found the anomaly!

3. At this time, carefully check and find that the left handle pilot pipe passes through the cab bottom plate, and a wire in the main line bundle is worn off! The location is very hidden, and if you do not carefully find it can not be found, so the owner did not find the fault point at the first time!

4, and through the wear of the wire, the problem has existed for a long time, find the fault point after the maintenance master wire connection, properly wrap the anti-leakage protective tape, re-test the machine to return to normal

Nature And Human Health

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• Stick to posting schedules that work
• Giveaways are a great way to get people into your community
• Look into your insights to see when your audience is active on Instagram
• Always be clear on what your CTA is

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Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Viverra aliquet eget sit amet. At ultrices mi tempus imperdiet nulla. Arcu dui vivamus arcu felis bibendum ut. Arcu cursus euismod quis viverra nibh. Cursus vitae congue mauris rhoncus. Faucibus ornare suspendisse sed nisi lacus sed viverra.

John Doe

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Experiencing Nature Fully

• Remain Top of Mind
• Be Seen to Sell
• Learn Something New

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Bibendum est ultricies integer quis. Risus quis varius quam quisque id diam vel. Lorem mollis aliquam ut porttitor leo a diam sollicitudin. At tempor commodo ullamcorper a. Faucibus scelerisque eleifend donec pretium vulputate sapien nec. Aliquet bibendum enim facilisis gravida neque convallis. In hendrerit gravida rutrum quisque.

The more common flameout problem in the construction process is basically around the following three situations, the first is a very common automatic flameout in the work, the second is the machine flameout after working for a period of time, the third is more serious, may just start the car after a few minutes automatically flameout, and even repeatedly start repeatedly will flameout, resulting in the entire engine to suffer!

Then the above several cases, the cause of the failure is mostly in the engine fuel system, the owner of the machine as long as the focus on checking the fuel system can follow the lead to solve the problem. Fault phenomenon ▊ but there are several kinds of automatic flameout fault phenomenon, quite tricky, there have been many maintenance masters are helpless, let’s take a look!

1. This problem is believed to have been encountered by many friends, that is, the entire starting circuit is detected to work normally, the test is started, although there are signs of fire, the engine can not start.
2. The hand oil pump can pump oil normally, but the oil comes out with air at the same time, when the air is discharged and the machine is started, the engine will automatically turn off after about ten minutes of operation.
3. Check that the filter on the fuel hand pump is smooth, and there is no blockage problem, but the machine will still fail for no reason.
4. Replace the fuel filter and fill it with oil, start the excavator after exhaust, and the fault still exists without any improvement.
5. There is always air in the fuel pump oil circuit, and the air is repeatedly eliminated but cannot be completely drained.
   Compared with the above several fault situations, if everyone’s love machine meets, then the first thing to check is whether the location of the high and low pressure pipeline interface has oil leakage problems, if there is no oil leakage problem after a close inspection, then focus on checking the interface rubber pad above the filter element.

We must not underestimate this rubber pad, if after a long time of use, because of thermal expansion and contraction and other reasons, the rubber pad will be aging, deformation and other problems because of the material, if not disassembled inspection, it is difficult to find such a secret fault point.
Because the probability of the problem is very large, many friends want to know whether there is no trouble, with the naked eye can quickly detect whether the rubber pad has oil leakage problem?

Don’t worry, the old driver gives you a trick, dip in the water after the dilution of dishwashing liquid, smear in the interface to be checked, if you find that there are bubbles repeatedly bulge, then enough to show that the part of the leakage problem! In addition, there is a reference to the use of time, if the machine construction more than 2 years, then the probability of leakage in the fuel system, such as rubber MATS, is very high, in order to avoid unnecessary valuation situation, we can refer to the time in advance to replace a batch of quality assurance rubber MATS, a few cents can avoid starting difficulties, automatic flame failure!

Nature And Human Health

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• Stick to posting schedules that work
• Giveaways are a great way to get people into your community
• Look into your insights to see when your audience is active on Instagram
• Always be clear on what your CTA is

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Viverra aliquet eget sit amet. At ultrices mi tempus imperdiet nulla. Arcu dui vivamus arcu felis bibendum ut. Arcu cursus euismod quis viverra nibh. Cursus vitae congue mauris rhoncus. Faucibus ornare suspendisse sed nisi lacus sed viverra.

John Doe

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Experiencing Nature Fully

• Remain Top of Mind
• Be Seen to Sell
• Learn Something New

At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.

Bibendum est ultricies integer quis. Risus quis varius quam quisque id diam vel. Lorem mollis aliquam ut porttitor leo a diam sollicitudin. At tempor commodo ullamcorper a. Faucibus scelerisque eleifend donec pretium vulputate sapien nec. Aliquet bibendum enim facilisis gravida neque convallis. In hendrerit gravida rutrum quisque.

#1 Avoid long idle time Avoid long idle time, in the daily operation of excavators, many construction site equipment idle time as high as 40%-50%.

Reduce the idle time before the shutdown. When loading/unloading, the truck waits for more than 5 minutes, please stop the engine.

#2 Maximize the digging force When the bucket cylinder and the connecting rod, the head rod cylinder and the head rod are 90°, each cylinder has the greatest force to push the excavator.

#3 Horizontal ground excavation Horizontal ground excavation, the bucket or soil reliever floor Angle is maintained at about 30°, and the bucket rod is collected. When the bucket rod is close to the vertical, the bucket rod has the greatest force and can carry more load.

In order to efficiently load the truck, the excavator will build the loading platform. The loading platform is higher than the truck height, the driver’s vision is wider, and the lifting distance of the loading working device is shorter, which can improve the construction efficiency.

The change of construction method has greatly helped to reduce fuel consumption.

#5 To choose high-quality fuel must choose high-quality fuel, high cetane value of diesel, easy to start, uniform combustion, output power, the cetane value of 40 ~ 55 is appropriate. The freezing point refers to the lowest temperature that the fuel can be transported without heating, and the point of diesel is generally lower than the ambient temperature of 3 ° C ~ 5 ° C.

When the temperature is above 4℃, 0# diesel oil is selected; When the temperature is from 4℃ to -5℃, -10# diesel oil is selected; Choose -20# diesel when the temperature is -5℃ to -14℃; Choose -35# diesel when the temperature is -14℃ to -29℃. Need to be reminded that please be sure to use regular gas station fuel.

#6 Improve the loading rate During the work process, it is necessary to improve the loading rate. It is recommended to double digging and loading, double parking space waiting, faster loading speed.

These fuel-saving operation tips may not even be noticed by old operators, but as long as you can develop good operating habits, over time, you can indeed save considerable fuel costs.

1. The fault of the diesel oil circuit of the excavator is caused. In general, when the diesel oil circuit is blocked, the speed loss may be caused.
2. The hydraulic system of the excavator fails, so that the hydraulic pump can not change the displacement normally, resulting in too high system pressure, speed loss and possibly holding machine failure.
3. The output power of the excavator engine is insufficient, the output power is lower than the rated power, and the speed is too low. There is also a problem with the main pump.
4. The engine uses poor fuel quality or high fuel water content, which will lead to insufficient power of the engine, resulting in speed loss.
5. When the air intake system leaks or is blocked, it will cause insufficient air supply to the engine, resulting in insufficient fuel combustion, and there will be speed loss and black smoke.
6. Because the solenoid valve clearance is too large, the oil supply is insufficient, which causes the engine to lose speed.
7. The fuel system oil supply circuit pipe joint is loose or the pipeline is broken, causing fuel leakage or foreign body blockage, resulting in insufficient oil supply, in addition to speed loss may also cause flame failure.
8. There are many reasons for speed failure, such as wrong valve clearance, wrong fuel injection timing, turbocharger damage, brake problems and so on. Said so the cause of the excavator engine speed loss, then when the speed loss should be done?
9. First check whether the diesel used by the excavator is deteriorated, whether there are impurities in the oil, and check whether the oil circuit is blocked.
10. Check the valve clearance size of the excavator engine and check the speed of the engine.
11. Check the intake pipe, clean the air prefilter and air filter element, and start the engine again.
12. Check whether the speed loss problem of the excavator occurs under the load of the engine?
13. Carefully check the engine to see if it is caused by engine failure.
14. In addition, electrical control, hydraulic system, fuel system and so on need to be checked.

1. Avoid walking and sudden turning on inclined terrain ░ if you repeatedly walk on inclined ground for a long time and turn suddenly, the side of the rail link will contact with the side of the drive wheel and the guide wheel, thus increasing the degree of wear. Therefore, walking in inclined areas and sudden turning should be avoided as much as possible. Straight line travel and large turns can effectively prevent wear.

2, find the problem, repair immediately ░ if part of the sprocket and support wheel can not operate in the state of continued use, it may cause the roller wear, but also may cause the wear of the rail link. If a roller that does not work is found, it must be repaired immediately! In this way, other failures can be avoided. ░

3, regularly check the bolts and nuts ░ support wheel, sprocket mounting bolts, track plate bolts, drive wheel mounting bolts, walking pipe bolts, etc., because the machine works for a long time, it is easy to loose because of vibration. For example, if the machine continues to operate when the track plate bolt is loose, it will cause a gap between the track plate and the bolt, which will lead to a crack in the track plate. Moreover, the gap may also increase the bolt hole between the track and the rail chain node, resulting in the serious consequence that the track and the rail chain node cannot be tightened and must be replaced. Therefore, bolts and nuts should be inspected and tightened regularly to reduce unnecessary maintenance costs. ░

4, timely clean the dirt and gravel in the track ░ soil or gravel rolled into the track, will rotate with the track and be squeezed between the guide wheel, drive wheel and track, will make the track is elongated. When the extrusion pressure in the track exceeds the bearing capacity of the chain rail, the chain rail will break, which will accelerate the wear of the track and the four wheels. Therefore, when there is soil and gravel in the excavator track, the Angle between the excavator motor arm and the bucket rod arm should be changed to keep it within 90°~110°, and then the bottom of the bucket should be placed on the ground, and one side of the track should be suspended and rotated several times, so that the soil or gravel in the track can be completely removed from the track, and then the boom can be manipulated to make the track fall back to the ground. Then operate the other track. ░

5, as far as possible to choose a flat road ░ the construction road and site of earth and rock works are uneven. If the driver does not choose a better walking route when moving the excavator, when the track presses on the convex part of the road, a certain point of the track bears the weight of the machine, it is easy to cause damage to the track. Often walk more than 30° slope of the road, when the machine can not climb up, the use of the bucket into the soil, relying on the telescopic force of the bucket arm cylinder as a way to climb, it is also easy to cause strain of the track. Therefore, when the excavator walks, it should try to choose a flat road or soil surface, and the machine should not be moved frequently. When moving within a longer distance, it is best to use a trailer to carry it, and try to prevent the excavator from being moved around in a large range. It should not be too steep when climbing, and when it is necessary to climb a steep slope, the route can be extended to slow down the slope and prevent the track from stretching and straining. Whether it is a new excavator or a second-hand excavator, in short, we should love and maintain it with our hearts. In fact, as long as a little time is spent on proper maintenance, you can avoid the “major operation of the excavator leg” in the future, save you considerable maintenance funds, and avoid the delay caused by maintenance.

The first trick: fully preheat the excavator before starting winter operations, the engine should run at a low speed for 5 minutes, in the preheating process to check whether the excavator oil leakage, oil warning light is off, charging indicator light is off, the engine sound and exhaust color is normal, the machine parts are abnormal. After the engine is preheated, the hydraulic device should be preheated by operating the excavator for various slow movements to prevent damage to the hydraulic device caused by rapid operation.

Second trick: Replace diesel and oil in winter when the temperature around the excavator becomes low, the viscosity of various oils in the fuselage will increase, and the excavator will become difficult to start. At this time, the operator should choose light diesel with low freezing point and good ignition performance and replace the oil with a higher label.

The third trick: Pay attention to the storage capacity of the excavator battery The lower the ambient temperature, the lower the storage capacity of the excavator battery, and the operator should pay attention to keeping the excavator battery warm. There are several methods can be used for reference: first, prepare a quilt to cover the battery location to keep it warm; The second is to directly remove the battery from the fuselage and store it in a warm room, and then install it when used.

The fourth trick: Cooling water needs to be discharged in time. When adding antifreeze to the cooling system in winter, add it in accordance with the proportion of the lowest temperature. If the excavator needs to be parked for a period of time, pay attention to empty the cooling water in the engine at this time. When the water is discharged, the excavator should run at idle speed before extinguishing, and then turn off the water when the cooling water temperature drops below 60℃. Pay attention to be sure to completely discharge the remaining water in the body, so as not to freeze and expand, so as to crack the body.