The pressure of the engine oil is suddenly reduced. In some models, the oil pressure alarm is installed. When the pressure is too low, the alarm indicator light and the driver should stop checking.

The reasons for low oil pressure are: (1) Baotou North run heavy card accessories crankcase crankcase lack of oil. (2) Baotou North run heavy truck accessories engine temperature is too high. (3) the viscosity of the oil is too thin. (4) Baotou North run heavy card accessories bearing clearance is too large. (5) the control pressure of the return valve is too low. (6) indicating damage to the instrument. (7) the wear of the oil pump or the leakage of the pressure limiting valve.

The sudden decrease of the oil pressure may also be due to the loosening, breaking or burning of the bearing screws. At this time, the abnormal noise from the crankcase bearing can be heard from the oil inlet. After determining the cause of the failure, it should be repaired and excluded in time.