What Will Cause Oil Pump to Drop When Hot?

Oil pumps play a vital role in the hydraulic systems of construction machinery, responsible for providing hydraulic energy to drive various hydraulic actuators. However, when a hydraulic system is operating in a hot environment, oil pumps decreasing efficiency or stopping working can become a problem. The following will explore what will cause oil pumps to drop when hot.

 

Hydraulic Fluid Viscosity Changes

At high temperatures, the viscosity of the hydraulic fluid may change. Excessive temperatures may cause the oil to become thinner, reducing its performance in the hydraulic system. Oil pumps require a certain amount of oil lubrication and sealing performance to maintain proper operation, and when the oil becomes too thin, the efficiency of the pump may be reduced.

 

Oil Leaks

In high temperature environments, seals and pipes in a hydraulic system may be subjected to greater pressure and thermal expansion and contraction, leading to an increased risk of leaks. Oil leaks will reduce the working pressure of the system, lowering the performance of the pump and may even cause the pump to stop working altogether.

 

Fluid oxidation

The oxidation process in hydraulic fluids may accelerate in high temperature environments. Oxidation can produce deposits that form deposits inside the oil pump, affecting the normal operation of the pump. These deposits may also cause fluid contamination, affecting the operation of the entire hydraulic system and diesel engine parts.

 

Oil pump overheating

The diesel oil pump itself may overheat due to prolonged high load operation. Overheating may cause a drop in fluid performance and wear on the internal parts of the pump. Prolonged overheating may also cause the pump's seals to fail, affecting its normal operation.

 

Hydraulic system overload

In high-temperature environments, construction machinery often faces more severe working conditions, leading to overloading of the hydraulic system. Overloading causes the oil pump to constantly struggle to deliver higher operating pressures, which in turn increases the risk of the pump degrading at high temperatures.

 

Unsuitable type of fluid

Using an unsuitable hydraulic fluid may also cause the oil pump to lower at high temperatures. Certain hydraulic fluids may lose their lubricating properties at high temperatures, leading to increased friction in the pump, which in turn reduces its efficiency and may also affect other parts of the equipment such as the starter motor.

 

What will cause oil pump to drop when hot? There are various reasons for oil pumps to drop in high temperature environments, which need to be systematically analyzed and tested. In order to prevent oil pumps from dropping when hot, a series of preventive measures should be taken, including regular replacement of hydraulic oil, paying attention to the sealing condition of the hydraulic system, and reasonably controlling the working load of the hydraulic system. Through effective maintenance and monitoring, the risk of oil pump failure under high temperature conditions can be minimized to ensure the stable operation of the hydraulic system.