The core of a second-hand excavator is not just the three major components of the computer board

What is the most important thing about excavators? Most people would think that the engine, hydraulic pump, and multi way valve are the three core components of an excavator. In terms of cost alone, these three components are indeed extremely important in the internal price of an excavator. However, we have overlooked a very important core brain of an excavator, which is what we call the excavator computer board. How to control the circuit system of the excavator? All equipment data needs to be operated through the excavator center computer board, and the theft rate of the computer board is much higher than other components of the excavator. Generally speaking, regardless of the size of the model, the value of a computer board is over ten thousand yuan, and many criminals seek huge returns by stealing excavator computer boards for exclusive sales.

The difficulty of repairing computer malfunctions is high, but there are few technicians available. If the computer board malfunctions, it can be determined that the excavator has completely lost its ability to work and can only wait for repairs. The cost of maintenance is usually estimated to be small, ranging from a few thousand to tens of thousands. It is heartbreaking not to mention the long maintenance cycle and the difficulty of repair. If not handled properly, it may even require updating the computer version system, which is very costly. If you want to avoid possible problems with the computer board or solve them, Huacheng can teach you how to reduce computer board failures through a few simple points.

Secondary injury caused by incorrect repair:

For individuals, if there are problems with the computer version, they simply do not have the conditions or technical skills to repair it through a master. Therefore, it is necessary to have an understanding of the master's expertise and skills. In China, there are few professional technicians who can repair excavator computer versions. Improper maintenance and handling can cause circuit short circuits, abnormal operation of electronic components, and low and high voltage caused by electronic components not meeting standards, which will bring devastating damage to the computer version. Especially for testing methods for circuit short circuits, this situation must be rejected.

Accidental water ingress, corrosion and oxidation damage to computer board:

Engineering equipment comes into contact with different engineering environments, especially during water related construction, which inevitably causes damage to the equipment. Currently, excavators have water discharge treatment for computer versions, but it is difficult to guarantee that problems will not occur. Damage and destruction caused by water ingress are very fatal. Internal water ingress can first cause a short circuit in the computer version, causing internal circuit electronic components to burn out and oxidize important precision electronic components. Such situations usually have no repair value. So when working in water, it is necessary to have a certain understanding of the water depth and whether the electronic components of the equipment have drainage indicators.

Difficulty starting and pressure causing the computer version to burn:

Usually, when some old devices have difficulty starting in areas with low temperatures, some people will come up with the idea of increasing the power to start. This method has no basis, causing the computer version to be under pressure, burning out the entire internal coil caused by short circuits between relays and safety relays, and damaging the internal and external instrument systems of the computer board. The overall repair difficulty is high, and the cost is extremely high. Therefore, when encountering start-up difficulties, it is necessary to carefully consider the start-up mode.

Abnormal wiring of the battery cable, minor mistake causing big trouble

If the computer board is powered on carelessly and the two levels are reversed, the destructive power caused is self-evident. Light damage to capacitors and fuses can seriously damage the entire instrument system and computer board motherboard. Usually, the electronic original and circuit systems of the entire computer board will suffer irreparable damage, and it can be basically judged that the excavator computer board is useless for repair.

There are many reasons that can cause harm. Generally speaking, it is important to pay attention to the maintenance and upkeep of the equipment during use. For second-hand excavators, it is also necessary to have a certain understanding of the user manual. Although it is not necessary to read it thoroughly, it can avoid many difficult problems in daily use.

Source:www.shcteng.com Used excavator