装载机机油压力过低的原因是什么？

装载机在工作过程中，如果机油的压力低于0.2 MPa，应立即停机查找原因，待排除故障后方可继续工作，否则会酿成烧瓦、拉缸等重大机械事故。现将山东装载机机油压力过低的主要原因介绍如下。Shandong loader in the work process, if the oil pressure is lower than 0.2 MPa, should immediately stop to find out the reasons, troubleshooting before it can continue to work, otherwise it will lead to the tile burning, cylinder and other major mechanical accident. The main reason for the low oil pressure of Shandong loader is introduced as follows.

1.发动机温度过高。若装载机发动机温度过高，不但加速机油老化、变质，也容易使机油变稀，导致油压下降。Engine temperature is too high. If the Shandong loader engine temperature is too high, not only to accelerate the aging of the engine oil, deterioration, but also easy to make oil thinning, resulting in decreased oil pressure.

2.曲轴与连杆轴承配合间隙过大。发动机长期使用后，曲轴与连杆轴承的配合间隙会逐渐增大，装载机的机油压力也随着下降。Crankshaft and connecting rod bearing clearance is too large. Long term use of the engine, the crankshaft and connecting rod bearing clearance will gradually increase, the oil pressure of the Shandong loader also decreased.

3.机油滤油器堵塞。当机油因滤油器堵塞而不能流通时，设在滤油器底座上的安全阀就被顶开，机油便不经过滤而直接进入主油道。如果安全阀的开启压力调得过高，滤油器被堵塞时，安全阀就不能及时打开，于是机油泵压力升高，内漏增加，装载机主油道供油量减少，引起油压下降。Oil filter plug. When the oil is blocked because of the oil filter and can not flow, the safety valve is arranged on the base of the oil filter, and the oil can be directly entered into the main oil pump without filtering. If the pressure is too high to open the safety valve, the oil filter is blocked, the safety valve can not be opened, so the pump pressure increases, the internal leakage increases, Shandong loader main oil reduced oil supply, caused by pressure drop.

4.机油散热器或管路漏油。机油散热器及管路漏油，会使油压下降。装载机的管路若被脏物堵塞，也会因阻力增大而使油的流量减少、油压下降。Oil radiator or oil leakage. Oil radiator and pipeline leakage, will make the oil pressure drop. If the pipe is clogged by dirt, the Shandong loader will reduce the flow of oil and reduce the oil pressure due to the increase of resistance.

5.油压传感器失灵或油管堵塞。若油压传感器失灵，或由主油道至油压传感器的油管因污垢积聚而流通不畅时，装载机的油压表将显示机油压力下降。Oil pressure sensor failure or tubing blockage. If the oil pressure sensor is out of order, or the oil pipe from the main oil path to the oil pressure sensor is accumulated and the circulation is not smooth, the oil pressure gauge of the Shandong loader will display the oil pressure drop.

6.机油牌号不对或质量不合格。不同型号的发动机须添加不同的机油，装载机同种机型在不同的季节也应采用不同牌号的机油。如果机油牌号不对，发动机运转时会因机油黏度太低而加大泄漏量，从而使油压降低。Incorrect grade or quality of oil. Different types of engines must be added with different oil, the same type of Shandong loader in different seasons should be used in different grades of oil. If the engine oil is not right, the engine will run because the oil viscosity is too low and increase the leakage, so that the oil pressure to reduce.

7.装载机的调压阀设定压力偏低。如果调压阀设定油压低，机油就不能有效地输送到各润滑部位，从而发生机械故障。如果油压过高，就会增加油耗，给机油泵和润滑部位增加负荷，损坏油路密封件并引发机油泄漏。Shandong loader pressure regulating valve set pressure is low. If the setting pressure of the pressure regulating valve is low, the oil can not be effectively delivered to each lubricating part, and the mechanical failure occurs. If the oil pressure is too high, it will increase fuel consumption, oil pump and lubricating parts to increase the load, damage to the oil seal and lead to oil leakage.