Low oil pressure in a mobile crusher may be caused by 11 reasons, including insufficient oil, high engine temperature, oil pump failure, and oil filter blockage. Timely troubleshooting can avoid equipment wear and performance degradation.

For mobile crushing machines, the working process is closely related to the oil pressure. Too high or too low oil pressure will cause production failures and changes in output. Here we analyze the reasons for low oil pressure for reference only.

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1. Insufficient oil. If the oil volume of the mobile crushing station is insufficient, the amount of oil in the oil pump will decrease, resulting in a drop in oil pressure. This phenomenon will aggravate the wear of the crankshaft and bearings, cylinder liners and pistons;

2. The engine temperature is too high. This phenomenon will not only cause the oil to become thinner, causing the oil pressure to drop, but also cause the mobile crushing station oil to age and deteriorate faster;

3. The oil pump stops or the oil volume is insufficient. The fixing pin of the oil pump drive gear and the drive shaft is broken or the mating key falls off, and the oil pump sucks in foreign matter and the oil pump gear is stuck, which will cause the oil pump to stop. At this time, the oil pressure of the mobile crushing station will drop to 0, and when the gap between the oil pump shaft and the bushing, the gear end face and the pump cover are When the clearance, tooth side clearance or radial clearance exceeds the allowable value due to wear, the pump oil volume will decrease and the oil pressure will drop;

4. After long-term use, the clearance between the crankshaft and the connecting rod bearing of the mobile crushing station engine will gradually increase, which is also one of the reasons for the drop in oil pressure;

5. The oil filter is blocked. At this time, the safety valve on the oil filter base is pushed open, and the oil enters the main oil channel without filtering. If the opening pressure of the safety valve is adjusted too high, the oil filter is blocked, and the safety valve cannot be opened in time, so the oil pump pressure increases, the internal leakage increases, and the oil supply of the main oil channel decreases, causing the oil pressure to drop;

6. The return oil valve is damaged or malfunctions. Generally speaking, during the use of the mobile crushing station, if the return oil valve is damaged or malfunctions, the oil pump pressure will increase, the internal leakage will increase, and the oil supply of the main oil channel will decrease, causing the oil pressure to drop;

7. The return oil valve is damaged or malfunctions. Generally speaking, during the use of the mobile crushing station, if the return oil valve is damaged or malfunctions, the oil pump pressure will increase, the internal leakage will increase, and the oil supply of the main oil channel will decrease, causing the oil pressure to drop. When the oil valve spring is fatigued and softened or improperly adjusted, the matching surface of the valve seat and the steel ball is worn or stuck by dirt and not closed tightly, the return oil volume will increase significantly, and the oil pressure of the main oil channel will also decrease;

7. The oil radiator or pipeline leaks oil. This phenomenon will also cause the oil pressure to drop. If the pipeline is blocked by dirt during the use of the mobile crushing station, the oil flow rate will decrease and the oil pressure will drop due to increased resistance;

8. The oil pressure sensor of the mobile crushing station fails or the oil pipe is blocked. The oil pressure gauge will show that the oil pressure has dropped;

9. The oil suction plate is blocked. For the mobile crushing station, if the oil is too dirty or too sticky, it is easy to block the oil suction plate. During the use of the station, when the engine is running at a low speed with a small throttle, the oil pump does not absorb much oil, and the main oil The road can still build up a certain pressure, and the oil pressure will be normal, but when the throttle is increased and the high-speed operation is carried out, the oil suction volume of the oil pump will be significantly reduced due to the excessive resistance of the suction cup, which will cause the displayed value of the oil pressure gauge to drop;

10. The oil brand is incorrect or the quality is unqualified. Different types of mobile crushing stations need to use different oils in production. If the equipment has the wrong brand or unqualified quality, it will cause the oil pressure to drop and the working performance of the equipment to drop;

11. The pressure setting of the pressure regulating valve is too low. At this time, the oil cannot be effectively delivered to the lubrication parts, resulting in mechanical failure. However, if the oil pressure is too high, it will increase fuel consumption, increase the load on the oil pump and lubrication parts, damage the oil circuit seals and cause oil leakage.