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 The fracture of the crankshaft usually starts from the smallest crack, and most of the cracks occur in the connection part with the crank arm at the fillet of the connecting rod journal of the head cylinder or the end cylinder. During the operation, the crack gradually expands and suddenly breaks when it reaches a certain level. The brown part is often found on the broken surface, which is an old crack, and the shiny and shiny tissue is the trace that developed to the sudden breakage later. LandTopMall is a store that integrates various engine parts such as excavators and diesel engines. There are many high-quality parts in our store. For instance, crankshafts fit for Yanmar 4tnv94l engine were the best-selling.     Engine Crankshaft Fracture Problem The rounded corners at both ends of the crankshaft journal are too small When grinding the crankshaft, the grinder failed to correctly control the axial fillet of the crankshaft. In addition to the rough surface processing, the fillet ra

  Consequences of Using Different Types of Filter Elements: 1. Use low-priced filter paper and filter screen, because the filter paper and filter screen have large pore size, poor uniformity, and low filtering effect, and cannot effectively remove harmful impurities from the excavator, thereby causing wear and tear to the excavator. service life is shortened. 2. Use low-quality adhesives with a small amount, which are neither oil-resistant nor water-resistant, nor can they be firmly bonded, resulting in a short circuit outside the excavator filter element bonding; The harmful substances enter the generator, reducing the service life of the excavator. 3. Using ordinary rubber parts, due to the failure of the internal seal, the internal short circuit of the filter will cause the excavator engine to wear, shorten its life, or deform the external seal, and a large amount of oil will be released in a short time, causing serious damage. 4. The welding point of the excavator filter element is

 According to relevant statistics, about 70% of hydraulic system failures of excavators are caused by the improper selection of hydraulic oil, careless use, and untimely replacement. Therefore, the correct and reasonable selection and replacement of hydraulic oil is an important condition for exerting the working performance and economic performance of the excavator and prolonging the service life of the hydraulic system and its components.     Generally, the hydraulic equipment manufacturer stipulates the type, grade, and viscosity level of the hydraulic oil used in the equipment system in the equipment manual or user manual. The user should first select the hydraulic oil according to the equipment manufacturer's recommendation. But sometimes, you need to choose hydraulic oil by yourself, how to choose it? As a professional editor of LandTopMall , I will introduce you to the principles of selecting hydraulic oil for excavators, as follows: Environmental Conditions According to the

 Many people know that excavator accessories require long-term maintenance, but do not know their real purpose and importance. There are three main reasons for maintaining the excavator. One is to reduce the failure of the machine, thereby prolonging the service life of the machine; the second is to shorten the downtime of the machine; the third is to improve work efficiency and reduce operating costs. As long as the daily management of fuel, lubricating oil, water, and the air is done well, 70% of the failures can be avoided.     Fuel Management Different brands of diesel oil should be selected according to different ambient temperatures; diesel oil should not be mixed with impurities, lime soil, and water, otherwise, the fuel pump will be worn out prematurely; the paraffin and sulfur content in inferior fuel oil will cause damage to the engine; daily work After finishing, the fuel tank should be filled with fuel to prevent water droplets from forming on the inner wall of the fuel tan

  What's the Reaction to a Broken Engine Connecting Rod Bearing? The main manifestations of broken car engine connecting rod bearing are lack of car oil or no car oil, the engine crankshaft will suddenly report dead when the car engine is running so that the car engine can be immediately judged to be pulled; when the engine has car oil, the car engine After a long time, if the car engine is running, there will be a rattling sound of the car engine, and this noise will go with the sound of the oil, and the bigger the accelerator pedal, the louder it will be.   Symptoms of car engine Lava: the lack of lubricating car oil is more serious when the car engine is running; it is found that the car oil used in the car engine is moldy and cannot provide lubrication; the oil pressure is low or there is no oil pressure The car engine still runs; in the crankcase of the car engine Aluminum alloy powder with blocks was found in the engine oil of the ventilated engine; there was abnormal noise w

 The thrust plate structure of the engine is in the form of a semi-circular sheet. The two sides are made of different materials, and one side is made of steel, which is harder. The other side is made of aluminum-based bearing alloy material, which is relatively soft and is in contact with the crankshaft. When the engine is running, it slides relative to the crankshaft. To reduce friction, there is an oil groove on one side of the bearing alloy. Correctly installing the thrust plate will help the engine run better, but if the thrust plate is installed backward, the service life of the engine will be lost. LandTopMall is a mall with 8 years of spare parts sales experience. We have professional spare parts experts and highly acclaimed high-quality products. Welcome to buying engine spare parts such as thrust plates.     How to Install the Engine Thrust Plate? 1. There are two crankshaft thrust plates, which are only installed on the front and rear thrust surfaces of the main bearing sea

  Why is it difficult to start the excavator in winter? It is not only determined by its technical conditions but also affected by the outside temperature. It is more difficult to start at a low temperature in winter, mainly due to the following reasons:   (1) In winter, the climate is cold, the ambient temperature is low, the viscosity of the oil increases, and the frictional resistance of various moving parts increases, which reduces the starting speed and makes it difficult to start.   (2) The capacity of the battery decreases as the temperature drops, which further reduces the starting speed.   (3) Due to the reduction of the starting speed, the leakage of compressed air increases, and the heat dissipation of the cylinder wall increases, which greatly reduces the temperature and pressure of the air at the end of compression, which increases the delay period of diesel ignition, and even cannot be burned in severe cases.   (4) The viscosity of diesel oil at low-temperature increases,

 Generally, the failure rate of hydraulic equipment is relatively high in the initial stage of use due to reasons such as design, manufacture, transportation, installation, and debugging. In the later period of equipment use, the failures gradually increase due to wear, corrosion, aging fatigue, etc. during long-term use. Only in the middle period of use, do equipment failures tend to be random and relatively stable, that is, the effective working life of the equipment. However, if it is used improperly or the potential faults are not diagnosed and eliminated in time, even in the valid life period, sudden serious faults cannot be ruled out. Therefore, it is the premise of correct and timely elimination of various faults to carefully study and summarize the faults and diagnosis techniques of each equipment. If you need to replace excavator accessories, please go to LandTopMall to purchase, we will provide you with the most professional answers and high-quality products.     What Mainte

 The oil cylinder is one of the most important parts of the excavator. The improper operation will damage the function of the oil cylinder. Next, the editor of LandTopMall will introduce to you what are the misunderstandings of the oil cylinder damage operation? Correctly mastering the operation method of the oil cylinder can save you more money and prolong the life of the excavator. However, if the cylinder of your excavator has been damaged and you need to replace such spare parts, you can contact LandTopMall's spare parts experts for consultation and purchase.     1. The working device is not fully recovered before walking If the working device is not fully retracted, the bucket will easily hit the rock, and the cylinder piston will generate a large load, which will cause internal damage to the cylinder and the cracking around the pin shaft. 2. Digging with walking force Hydraulic oil is easily emulsified and deteriorated after being mixed with water, and entering the hydraulic

 We all know that the engine of an excavator is a very important power component, and a good engine is composed of its extremely important accessories. To avoid the failure of the engine of the excavator, in addition to strictly maintaining the engine of the excavator according to the maintenance manual, it is also necessary to maintain the engine of the excavator. Pay attention to the maintenance of the excavator engine and its accessories in extreme weather conditions such as winter. The following will tell you about the daily maintenance knowledge of the excavator engine, and how to maintain the excavator in winter. If you need to purchase excavator accessories, please call: (+852) 63548665 to contact our accessories experts or visit LandTopMall .com to choose. 1. Excavate the content of the daily maintenance work of the engine. The maintenance of the excavator requires experienced maintenance personnel to complete the maintenance work after proper procedures, and the maintenance p

The turbocharger uses the exhaust gas discharged from the engine to drive the turbine. No matter how advanced it is, it is still a set of mechanical devices. Because its working environment often works at high speed and high temperature, the temperature of the turbocharger exhaust gas turbine end is above 600 degrees, and the turbocharger is supercharged. The speed of the supercharger is also very high, so to ensure the normal operation of the supercharger, it is very important to use and maintain it correctly.   Under low-temperature conditions, the increase of fuel viscosity is not conducive to the atomization and combustion of fuel, the poor fluidity of lubricating oil increases the resistance of various moving parts, coupled with the influence of factors such as the reduction of battery working capacity, it is easy to cause difficulty in starting the engine, Parts wear, power decreases, fuel consumption increases and power performance decreases. To ensure that all kinds of construc

 The correct maintenance of the five major parts of the excavator can keep the excavator in good working condition and improve the service life of the excavator, which is a very important thing! The editors of LandTopMall will give you the following explanations: Engine P art The oil and oil filter elements must be replaced with genuine parts and replaced according to the specified maintenance cycle. Use diesel fuel provided by regular gas stations as much as possible, and it is best to filter it before adding it. Drain water at the bottom of the diesel tank and the oil-water separator before starting work every day. Check the air filter frequently. Do not use idle speed for a long time to save fuel to prevent carbon deposition. Check the water tank pump every day to prevent water shortage and leakage, so as not to cause a high temperature of the engine or cylinder flushing. Hydraulic Travel Rotation System Replace the hydraulic oil, oil return filter element, and pilot filter element

 There is much auxiliary operating equipment at the front end of the excavator, and the variety is complete. According to statistics, there are about 20 kinds of excavator attachments that can handle various messy working conditions, but many customers know little about them. Today I will introduce some of the more common devices for your reference. Excavator Accessories - Breaker The breaker is also called the hydraulic breaker, and in the south, the breaker is also called the gun head. It is mainly used for mining and concrete blasting. Hydraulic Shears, Excavator Accessories Hydraulic shears, also known as hydraulic pliers, are mainly used for the demolition of high-rise buildings, and their power is much higher than that of breakers. Excavator Accessories - Vibration Tamping A vibratory compactor, also known as a hydraulic compactor or road roller, is mainly used for the protection of hydraulic slopes and the construction of high-speed railway slopes. A single mini excavator is equ

  Quickly Identifying Whether the Main Pump of an Excavator Accessory is Broken Can Save a Lot of Extra Time If the main pump of the excavator parts suddenly ruptures during the use of the excavator, it will cause serious adverse effects on the excavator, so we should learn how to quickly identify whether the main pump of the excavator parts is ruptured, only by learning How to identify, so that many unnecessary losses can be avoided when using the excavator later, and quick identification can also help us save a lot of extra time. The rupture of the sliding shoe of the main pump of the excavator part sounds complicated. Let's take an example: an excavator is working, and suddenly there is an abnormal "click" sound in the hydraulic main pump part. At this time, the operation site is far away from the maintenance station and spare parts supply point, and the construction period is tight and cannot tolerate too much downtime, but it is not possible to exclude the possibilit

 When the parts of the excavator fail, it will affect the excavator's inability to work smoothly, so it is necessary to replace the parts of the excavator in time, but because the progress of the project is often in a hurry, there may not be enough time. Let everyone choose the excavator accessories carefully, so some friends just take one and replace it when choosing accessories. It is necessary to know that if the excavator accessories are not matched, it will cause serious damage to the excavator.     the Model Does Not Match In the maintenance process, the phenomenon of substituting or misusing excavator parts is still very common. Emergency substitution of some parts is feasible, but long-term use is harmful and unhelpful, which has a great impact on the safety and technical performance of the excavator. If the parts suitable for Yanmar gc950 engine are applied to the parts suitable for Komatsu 4d94le engine, there will be serious adverse consequences. Some maintenance perso

 A car is an important personal investment, but owning one, whether new or used, takes a lot of effort. It must be well cared for to ensure its reliability and prevent malfunctions. Used cars, in particular, need special attention as they are harder to maintain and more expensive than new cars. Following a regular maintenance routine will help extend the life of your car and keep your car performing at its best. It can also save you a lot of repair costs. But when you need to buy accessories but don't know how to choose, you can contact LandTopMall's accessories experts to help you. We not only provide accessories for Kubota v2607-t engine but also various engine accessories for Yanmar Yanmar b55w engine, etc. Here are 10 tips for car care: maintain the car Drive Carefully Do not accelerate the engine during start-up as this will rapidly increase the wear on the car's engine. Accelerate slowly when you start driving. Shift into neutral at a red light to give the engine tim

 In the era of mass production and high maintenance costs, it is very necessary to know some theoretical knowledge about car engines, which can not only help you better understand your car but also save some unnecessary maintenance costs to a certain extent. . When you need to buy accessories but don't know how to choose, you can contact LandTopMall's accessories experts to help you. We not only provide a turbocharger with model number 3599355 but also various engine accessories suitable for Yanmar 129407-01340 engine. The following is the theoretical knowledge about the engine: Crank Link Mechanism The crank connecting rod mechanism is the main moving part for the engine to realize the working cycle and complete the energy conversion. It consists of a body group, a piston connecting rod group, and a crankshaft flywheel group. During the power stroke, the piston moves linearly in the cylinder under the gas pressure, converts it into the rotational motion of the crankshaft throu