What to do if a hydraulic motor leaks?

Hydraulic motor is one of the core components of heavy machinery such as excavators, loaders, forklifts, etc. In all hydraulic motor problems, oil leakage is probably a problem that is prone to occur, whether it is in our Prince's live broadcast or private letter, some people ask, below, I will analyze the reasons for hydraulic motor oil leakage for you in detail, and provide the corresponding solutions.

The cause of hydraulic motor oil leakage

The seal is aged or damaged

There are many seals in the hydraulic motor to prevent the leakage of hydraulic oil. Over time, these seals will age, harden, or crack due to the temperature, pressure, and use 

environment of the hydraulic oil. Once the seal fails, the oil will leak out.

Improper installation or improper alignment

The installation of the hydraulic motor needs to be very precise, and if the motor is not aligned, or not properly aligned to other components during installation, it can also lead to leakage. Especially in the case of high load and high speed, improper installation will exacerbate the wear of the seal, resulting in oil leakage.

System overpressure

If the pressure of the hydraulic system exceeds the rated working range of the hydraulic motor, it may cause the seal inside the motor to be subjected to excessive pressure, resulting in damage or leakage. Especially in the case of excessive working load, the hydraulic system may produce excessive pressure, which accelerates the wear of the motor.

Hydraulic oil contamination

If the hydraulic oil contains impurities, particles or moisture, these pollutants will wear the seals and bearings inside the hydraulic motor, resulting in oil leakage. Contaminants may come from the external environment, or they may be due to quality problems in the system's internal pipes, fuel tanks, or hydraulic oil itself.

Overuse or frequent startup

If the hydraulic motor is operated under high load or frequent start-stop for a long time, the seals and other components may cause oil leakage due to excessive wear. This situation is common in some hydraulic equipment with harsh working environment and high working intensity.

The solution of hydraulic motor oil leakage

Check and replace seals

Hydraulic motor oil leakage, the most common reason is the seal problem. If an oil leak is found, first check whether the seal is aged or broken. If the seal problem is more serious, timely replacement is the key to solve the problem. When changing the seal, be sure to choose a high-quality seal that matches the original, which can ensure a better sealing effect and reduce the probability of oil leakage in the later period.

Reinstall and align

If the oil leakage is caused by improper installation, it is recommended to reinstall the hydraulic motor. During installation, ensure that the motor is aligned with other connecting parts to avoid any offset or uneven force. After installation, check that all connections are secure and that there are no loose screws or joints.

Adjust hydraulic system pressure

If the system pressure is too high, adjust the pressure setting in time to avoid exceeding the maximum bearing range of the hydraulic motor. Check that the relief valve is working properly to ensure that it automatically removes excess pressure when the pressure is too high. High system pressure will accelerate the damage of the hydraulic motor, so be sure to check regularly.

Change the oil regularly and clean the system

Hydraulic oil is the "life" of the hydraulic system, if the quality of the oil is poor or seriously polluted, the hydraulic system is easy to fail. Replace the hydraulic oil regularly and ensure the cleanliness of the oil. The fuel tank and pipe should be kept sealed to prevent external impurities from entering the hydraulic system.

Avoid overwork or frequent startup

When the hydraulic motor is overloaded for a long time or starts and stops frequently, it will accelerate wear and lead to oil leakage. Therefore, it is necessary to avoid the hydraulic motor working in the state of high load and ultra-long time operation. If the load is too large, you can consider using a more powerful motor or adding an auxiliary cooling system.

How to prevent oil leakage of hydraulic motor?

Regular inspection and maintenance

The best way to prevent oil leakage from hydraulic motors is to check and maintain them regularly. Check every component in the hydraulic system to ensure that the tightness, connectivity, and pressure Settings are within normal ranges. If a potential problem is identified and resolved as soon as possible, more serious faults can be avoided.

Choose a better quality motor

The quality of the hydraulic motor and the quality of the seal are directly related to the stability of the system. The use of high-quality hydraulic motors and seals can not only extend the service life, but also reduce the probability of failure.