Hydraulic hose bursting is a headache for many excavator masters. Because the bursting of the pipe will cause hydraulic oil leakage, the subsequent maintenance is time-consuming, labor-intensive and expensive. So what are the common reasons for hydraulic pipe bursts?
1. The use of inferior hydraulic hoses
After the original hydraulic hose is damaged, many people choose low-quality hydraulic pipes that are not up to standard in order to be cheap. The performance and reliability of this hydraulic pipe are far inferior to the original ones.
In addition, the withholding process of the metal joints at both ends of the hydraulic pipe is poor, and the sealing and reliability cannot be guaranteed. After a period of use, it will save fuel and even leak. Therefore, when replacing hydraulic pipes, you must choose products from regular big brands.
2. The hydraulic system pressure is too high
If the preset pressure of the hydraulic system is too high, it will increase the probability of pipe bursting. The method is to test the pressure value generated by the main pump in combination with various actions. If it is confirmed that the pressure value is too large, the pressure of the multi-way valve can be appropriately lowered.
3. Hydraulic oil temperature is too high
If the hydraulic system of your machine is high temperature, it will also affect the sealing of hydraulic components and cause tube burst leakage; in addition, the high temperature will also expand the hydraulic components, causing the valve core and valve body to be stuck, resulting in local high temperature and tube bursting.
4. Mix hydraulic oil of different grades
Excavators generally use 46# hydraulic oil by default when they leave the factory. If you add 68# hydraulic oil that is common in parts stores during use, it will cause the hydraulic oil to be unstable and damage components. High-viscosity hydraulic oil has poor fluidity, which will cause high pressure locally in the hydraulic system, which is easy to cause pipeline leakage.