1, Insufficient oil quantity. If the oil quantity of the mobile crushing station is insufficient, the amount of pump oil in the oil pump will decrease, resulting in a decrease in oil pressure. This phenomenon will exacerbate the wear of the crankshaft and bearings, cylinder liners, and pistons;
2, The engine temperature is too high, which not only causes the oil to become thinner, resulting in a decrease in oil pressure, but also causes aging and accelerated deterioration of the oil in the mobile crushing station;
3,The oil pump stops rotating or the pump oil quantity is insufficient, the fixed pins of the drive gear and the drive shaft of the oil pump are broken or the matching keys fall off, and the oil pump absorbs foreign matter and the pump oil gear gets stuck, which can cause the oil pump to stop rotating. At this time, the oil pressure of the moving crushing station will drop to 0. When the clearance between the oil pump shaft and the bushing, the clearance between the gear end face and the pump cover, the tooth side clearance, or radial clearance exceeds the allowable value due to wear, Will lead to a decrease in pump oil volume and a decrease in oil pressure;
4,After long-term use of the engine of the mobile crushing station, the fit clearance between the crankshaft and connecting rod bearings will gradually increase, which is also one of the reasons for the decrease in oil pressure;
5, The oil filter is blocked. At this time, the safety valve on the base of the oil filter is pushed open, and the oil directly enters the main oil passage without filtering. If the opening pressure of the safety valve is set too high, and the oil filter is blocked, the safety valve cannot be opened in a timely manner. As a result, the pressure of the oil pump increases, internal leakage increases, and the oil supply volume in the main oil passage decreases, resulting in a decrease in oil pressure;
6, The return valve is damaged or malfunctioning. Generally speaking, during the use of a mobile crushing station, if the spring of the return valve is fatigued and softened or improperly adjusted, the mating surface of the valve seat and the steel ball is worn or jammed by dirt, resulting in a loose closure, the amount of return oil will significantly increase, and the oil pressure in the main oil passage will also decrease;
