Several maintenance techniques and steps for second-hand excavators

Looking at the current development of the second-hand excavator market in China, it can be said to be quite optimistic. At present, the country is increasing its attention to engineering construction while vigorously promoting the concept of sustainable development. Therefore, the development and improvement of the second-hand excavator market have received unprecedented attention and importance. And at this point, we have to mentionShanghai second-hand excavator market. This can be said to occupy a leading position in the market and is the backbone of the domestic old excavator market.

The reason why the second-hand excavator market in Shanghai can develop well is not only because it has sufficient funds invested in the use of this old excavator, but more importantly, its maintenance. Because we know that second-hand excavators are construction equipment that has been used for over 250 hours. So there is still a certain difference in performance or work efficiency compared to those brand new excavators. So in the actual operation process, the probability of second-hand excavators experiencing malfunctions and problems is much higher than that of brand new excavators. So please follow the author below to learn about the maintenance techniques of old excavators! I hope to help construction companies improve the utilization rate of old excavators.

Low pressure is one of the common malfunctions of second-hand excavators. So now let me tell you how to effectively repair this problem! Firstly, we need to determine the cause of this malfunction. Generally speaking, a shortage of refrigerant in the refrigeration system of a second-hand excavator will affect the low pressure of the entire machine equipment. At this moment, we just need to be rightShanghai second-hand excavator marketIf you are familiar with it, you can adopt the following methods to carry out relevant repairs.

If the low-pressure hose of the excavator is blocked or frozen, the relevant maintenance personnel should promptly adjust the refrigeration system back to normal and replenish the amount of refrigerant inside to the normal level. If we are not sure what this amount is, we can refer to the instructions attached to the relevant machine equipment to find out.

The cooling of the inlet side of the expansion valve is another malfunction that occurs in second-hand excavators. When we inspect the expansion valve, we often find that there is still some frost at this position. At this point, the repair techniques can be said to be relatively simple. Just replace it with a new expansion valve. Of course, if you want to respondShanghai second-hand excavator marketRegarding the conservation of engineering construction resources, we can also dismantle the expansion valve and conduct a thorough cleaning. In this way, it can save a lot of additional costs for excavator maintenance.

The hot water valve is a common component of excavators in the second-hand excavator market in Shanghai. And it is highly likely that it was caused by the relevant drivers not closing the hot water valve in a timely manner. At this point, we should promptly conduct corresponding shutdown checks. If so, we should immediately shut it down, otherwise it is easy to cause damage to the hot water valve, and more seriously, it may also affect the cooling effect of the excavator. And once this malfunction occurs, the author suggests that maintenance personnel should replace the hot water valve in a timely manner.