Some Suggestions For Hydraulic Crane Plunger Pump Oil And Venting

Oil filling is a crucial step before starting a hydraulic pump and is integral to the smooth operation and long-term stability of the hydraulic system.  Why is this operation so important? There are several main reasons:

Lubrication
The hydraulic pump contains many precise moving parts, such as the plunger, the cylinder block, the oil distribution pan and the filling pump. These parts need to maintain a high degree of lubrication during operation to reduce friction and wear and extend their life. Oiling ensures that the lubricating oil adequately lubricates these parts, reducing friction losses during operation.

Heat conduction
In a hydraulic system, the fluid takes on the task of transferring energy from one component to another. If the hydraulic pump is not properly lubricated and cooled, its internal temperature may increase, causing the performance of the hydraulic oil to decline and possibly even triggering the failure of the pump.

Sealing performance
Oil injection also helps maintain the sealing performance of the hydraulic system. The seals in the hydraulic system must be kept well elastic to prevent fluid leakage. Proper oiling can help keep the seals soft and sealed, thereby reducing the risk of leakage. Hydraulic pump oiling operation recommenda.

 

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Hydraulic pump oiling operation recommendations

Cleaning
Before filling the oil, make sure that the working environment and the oil filling equipment are clean. Prevent impurities and dirt from entering the hydraulic system and damaging the pump and other critical components.

Filling Point
On hydraulic pumps, there are usually clear oil filling points, such as the drain port (T port) located above the hydraulic pump housing. Make sure the oil is injected accurately into these points to ensure that the components inside the pump are adequately lubricated.

Venting
After completing the hydraulic pump filling, venting is a crucial step. The purpose of venting is to remove air or bubbles from the system, ensuring that the hydraulic system can function properly and avoid problems caused by the air, such as noise, reduced performance, or damage to hydraulic components. Here are some common ways to vent a hydraulic system:

Manual exhaust: In the key parts of the hydraulic system, there is usually a special exhaust valve or exhaust plug. These are usually located high up or where the oil needs to enter, such as the top of the hydraulic cylinder or the high point of the line. By opening these exhaust valves or plugs, air bubbles and air can be removed manually. Usually, you will need to use a specific tool, such as a wrench or spanner, to open these exhaust valves.

Run a hydraulic pump: Another method of venting is to expel the air by running a hydraulic pump. When initially starting the hydraulic system, you can run the pump several times to allow the air in the system to gradually drain out. Be aware that this may take some time, so patience is required.

Progressive venting: This method involves gradually increasing the pressure in the hydraulic system to push the air out. During the gradual pressurization of the system, the air bubbles are compressed and gradually expelled from the system.

Check regularly Check the hydraulic oil level of the hydraulic system regularly and replenish it as needed. Make sure that filling is done regularly to maintain optimal system performance.