Hydraulic tubing electric squibs are a headache for many excavator masters. Due to the leakage of hydraulic oil caused by the electric squib, maintenance after the accident is time consuming and costly. So what are the common causes of hydraulic tube bursts?
1. use inferior hydraulic pipe
Many people in the original hydraulic pipe damage, in order to be cheap, many people choose quality inferior hydraulic pipe that does not meet the standard, the performance and reliability of this hydraulic pipe is far lower than the original.
In addition, the metal joints at both ends of the hydraulic pipe are poorly crimped, and the sealing and reliability cannot be guaranteed. After using for a period of time, there will be fuel consumption and even oil leakage. Therefore, the replacement of hydraulic pipes must use regular large brand products.
2. the hydraulic system pressure is too high
The pre-set pressure of the hydraulic system increases the likelihood of an explosion. The method is to test the pressure generated by the main pump in combination with various actions. If the pressure value is confirmed to be too large, the pressure of the multi-way valve can be appropriately reduced.
3. the hydraulic oil temperature is too high
If your machine's hydraulic system is hot, it will also affect the sealing of the hydraulic components, causing the pipe to explode; in addition, high temperatures can cause the hydraulic components to expand, causing the valve plug and the valve body to get stuck, causing local high temperatures and causing the pipe to burst.
4. Mix different grades of hydraulic oil
The excavator factory uses 46 hydraulic oil by default. If you add 68 hydraulic oil commonly used in the accessory library during use, the hydraulic oil will be unstable and damage the parts. High viscosity hydraulic oil has poor fluidity, which can cause high pressure in the hydraulic system, causing pipeline leakage.
5. bad operating habits
If the operator is rude during operation, a large impact load can create a transient impact pressure in the hydraulic system. Impact pressure can cause premature failure of high pressure tubing joints and hoses, pressure or bursts, greatly reducing hydraulic pressure. The service life of the pipe. In addition, rude operations can affect the durability of other components, resulting in frequent mechanical failures. Therefore, the operation of the excavator must be gentle, do not do high-intensity, high-risk movements.
6. hydraulic tube corrosion
Although most hydraulic pipes currently have a certain degree of corrosion resistance, after a long period of exposure of rubber products to diesel oil, the colloids are fluffy. Produce certain adverse effects, try not to let the hose contact with gasoline and diesel. Generally, rubber will expand the colloid and fluff when soaking gasoline and diesel for a long time. Therefore, in normal use, contact with corrosive liquids such as diesel should be avoided, and the outer surface of the hydraulic pipe should be cleaned frequently.
7. Abnormal vibration of hydraulic pipe
Both the gear pump and the plunger pump have oil pulses during operation. This pulsation causes high frequency vibration of the hydraulic pipe, and this high frequency vibration cannot be completely eliminated. Long-term abnormal vibrations can cause fatigue and wear of the hydraulic pipe. Therefore, be sure to check the pipe clamps and protective sleeves of the hydraulic pipes. Once the pipe clamp is loose, it will wear the hydraulic pipe and even wear the hydraulic pipe.
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