The hydraulic system of wheel loader is contaminated during maintenance, testing, use and storage. Cleaning is an important means to remove pollution and keep hydraulic oil, hydraulic components and pipelines clean. In production, the cleaning of the hydraulic system usually has the main system cleaning and the whole system cleaning. The entire system cleaning refers to cleaning the entire circuit of the hydraulic device, and the system should be restored to the actual operating state before cleaning.
Cleaning media can be used with hydraulic oil. The cleaning time is generally 2-4 hours, under special circumstances, not more than 10 hours. The cleaning effect is based on the absence of impurities on the loop filter.
Precautions when cleaning:
1. When cleaning general hydraulic system, please use hydraulic oil or test oil to work. Do not use kerosene, gasoline, alcohol, steam or other liquids to prevent corrosion of hydraulic components, pipes, oil tanks and seals;
2. Install a filter or filter on the circuit of the clean oil circuit. At the beginning of cleaning, due to the high content of impurities, you can use an 80 mesh filter, and use a filter mesh of more than 150 mesh in the later cleaning process;
3. The intermittent operation of the hydraulic pump is conducive to improving the cleaning effect. The interval time is generally (10-30) minutes;
4. During the cleaning process, the non-metallic hammer rod can be used to impact the tubing, which can be continuously tapped or continuously tapped to facilitate the removal of deposits in the pipeline;
5. During the cleaning process, the hydraulic pump is running and the cleaning medium is heated at the same time. When the cleaning fluid temperature is (50-80) ° C, the rubber residue in the system is easily removed;
6. In order to prevent external moisture corrosion, the hydraulic pump should continue to run until the temperature returns to normal;
7, the cleaning time is generally (48-60) hours, depending on factors such as the complexity of the system, filtration accuracy requirements and pollution levels;
