In the whole process of work, if the working pressure of the oil is too low, it needs to be shut down for maintenance immediately. Today, let's talk about the various reasons for the low oil pressure of the mining loader:

(1)机油剩余油不够若机油剩余油不够，会使机油泵的泵油量少，造成机油压力降低，加重发动机曲轴与滚动轴承、气缸套与活塞杆的损坏。

(1) The remaining oil of the engine oil is insufficient. If the remaining oil of the engine oil is insufficient, the pump oil of the engine oil pump will be less, resulting in the reduction of the oil pressure and aggravating the damage of the engine crankshaft and rolling bearings, cylinder liner and piston rod.

(2)柴油发动机溫度过高若柴油发动机溫度过高，不仅加 快机油脆化、霉变，矿用装载机，也非常容易使机油变稀，造成汽压降低。

(2) The temperature of diesel engine is too high. If the temperature of diesel engine is too high, it will not only accelerate the embrittlement and mildew of engine oil, but also easily dilute the engine oil and reduce the steam pressure.

(3)机油泵转停或泵油量不够机油泵的驱动齿轮与转动轴的固定不动销或相互配合键掉下来，巷道井下矿用装载机，及其小铲车机油泵吸进脏东西而将泵油传动齿轮卡死，都是使机油泵终止运行，机油压力也随着降0。当机油泵泵轴与轴套中间的间隙、传动齿轮内孔与泵盖的间隙、齿侧间隙或轴向间隙因损坏而*出控制值时，都是造成泵油量少，导致机油压力降低的不好响。

(3) When the oil pump stops or the pump oil volume is insufficient, the fixed pin or mutual matching key of the driving gear of the oil pump and the rotating shaft of the oil pump falls off, and the oil pump of the underground mine loader and its small forklift sucks in dirt and blocks the pump oil transmission gear, all of which terminate the operation of the oil pump and reduce the oil pressure to 0. When the clearance between the oil pump shaft and the shaft sleeve, the clearance between the inner hole of the transmission gear and the pump cover, the tooth side clearance or axial clearance * exceed the control value due to damage, it is caused by less pump oil and the reduction of oil pressure.

(4)发动机曲轴与连杆轴承相互配合间隙过大柴油发动机长期性应用后，尾气水过滤矿用装载机，发动机曲轴与连杆轴承的相互配合间隙会慢慢扩大，机油压力也伴随着降低。(5)机油滤油器阻塞当机油因滤油器阻塞而不可以商品流通时，建在滤油器基座上的阀门就被弹开，机油便没经过虑而直接进入主油道。

(4) The matching clearance between engine crankshaft and connecting rod bearing is too large. After the long-term application of diesel engine, the matching clearance between engine crankshaft and connecting rod bearing will slowly expand and the oil pressure will also decrease（ 5) The oil filter is blocked. When the oil can not be circulated due to the blockage of the oil filter, the valve built on the base of the oil filter will be popped open, and the oil will directly enter the main oil passage without consideration.

假如阀门的打开工作压力调得过高，井下矿用装载机，滤油器被阻塞时，阀门就不可以立即开启，因此机油泵工作压力上升，漏气提升，主油道提供的油量少，造成汽压降低。

If the opening working pressure of the valve is adjusted too high, when the underground mine loader and oil filter are blocked, the valve can not be opened immediately. Therefore, the working pressure of the oil pump rises, the air leakage rises, and the oil provided by the main oil passage is less, resulting in the reduction of steam pressure.