Due to the increased accuracy and pressure of hydraulic equipment, most hydraulic equipment failures are caused by dirt in the oil circuit. Special care must be taken when filling hydraulic oil or disassembling hydraulic equipment.
Daily maintenance of hydraulic system of excavator:
1. When decomposing or maintaining hydraulic equipment at the construction site: When the hydraulic equipment is decomposed or maintained at the construction site, there is a risk of dust entering the hydraulic equipment, and it is difficult to guarantee the performance after repair. Therefore, it is best to replace the complete set of components. Disassembly and maintenance of hydraulic equipment should be Conducted in a specially prepared dust-free workshop and tested its performance with special test equipment.
2. Pay attention to the working environment: avoid filling the machine with hydraulic oil, replacing the filter element or carrying out repairs in rainy or windy weather or in dusty places.
3. When filling hydraulic oil, do not allow dirt or dust to enter. When refilling hydraulic oil, be careful not to allow dirt or dust to enter. Always keep the fuel port and its surroundings, fuel pump and oil tank clean. Use oil filter device It is a more effective method to filter out the dirt that enters when storing oil.
4. Sealing the pipe mouth: After removing the pipe or equipment, the pipe mouth must be sealed with a sealing cap, tape or plastic bag to prevent dirt or dust from entering. If the pipe mouth is open or only blocked with a rag, it is easy to have dirt The danger of entering or leaking oil to pollute the surrounding environment is absolutely not allowed. It is not allowed to drain waste oil on the ground casually, the oil must be collected and the customer is required to dispose of it properly or bring it back for disposal.
5. Flushing operation: When disassembling and assembling equipment or changing oil, the flushing oil should be used to remove impurities, sludge and old oil in the hydraulic oil circuit. Generally, two flushings should be carried out: the first flushing with flushing oil, then the regulations The second flush of hydraulic oil.
6. Change the hydraulic oil when the temperature is high: hydraulic oil or other oil easily flows when the temperature is high, and the sludge in the oil circuit is also easy to flow out with the oil. Therefore, it is best to change the oil when the oil temperature is high. Drain the old hydraulic oil. (Not only drain the oil from the hydraulic oil tank, but also drain the oil from the filter element and the oil drain plug in the oil circuit) If the old hydraulic oil is left, the contaminants and sludge in the old hydraulic oil will be New oil is mixed to shorten the hydraulic oil life.
