The high pressure oil pipe of the excavator is always bursting, but the reason cannot be found, which is really annoying. What I share with you today is the cause of the oil pipe burst and the troubleshooting method, I hope it will be useful to you.

1 Reasons for high pressure oil pipe burst

Aging of high-pressure oil pipes: After the excavator has been used for 3 years, the withholding part is the weakest part of the pipe, and the leakage and pipe burst problems are mostly concentrated here. After long-term sun and rain, the rubber will age. The site may also leak. "

Excessive pressure: The pressure value generated by the main pump can be tested in combination with each action. If it is confirmed that the pressure value is too large, the main overflow pressure of the multi-way valve can be reduced a little.

Pressure adjustment method: Find the main relief valve, turn it counterclockwise to make it smaller, generally turn it about 90 degrees first, and check whether the pressure is reduced in the overflow state.

Abnormal vibration of hydraulic oil pipe

Vibration is generally accompanied by noise, and the noise sources include hydraulic pumps, multi-way valves, hydraulic cylinders, etc.

The causes of noise are as follows:

The first suction phenomenon, check whether the hydraulic oil level is normal;

The internal components of the second pump and motor are worn and need to be opened for inspection;

Third, when the temperature is low, the oil will condense. It is recommended to be active for a while when the car is hot.

High temperature of hydraulic system: At high temperature, the sealing performance of hydraulic components is reduced, resulting in leakage of pipe bursts. Secondly, the expansion of hydraulic components due to high temperature will cause the valve core and valve body to be stuck, resulting in local high temperature and pipe bursting.