The purpose of carrying out regular maintenance on the excavator is to minimize the failure of the machine and prolong the service life of the machine; Reduce the downtime of the machine; Improve work efficiency and reduce operation cost. As long as the fuel, lubricating oil, water and air are well managed, 70% of failures can be reduced. In fact, about 70% of failures are caused by poor management.
1. The management of fuel oil shall select different brands of diesel oil according to different ambient temperatures; Diesel oil shall not be mixed with impurities, ash and water, otherwise it will cause premature wear of fuel pump; The high content of paraffin and sulfur in inferior fuel will damage the engine; After daily operation, the fuel tank shall be filled with fuel to prevent water droplets on the inner wall of the tank; Open the drain valve at the bottom of the fuel tank to drain water before daily operation; After the engine runs out of fuel or the filter element is replaced, the air in the pipeline must be exhausted. The minimum ambient temperature is 0 ℃ -10 ℃ -20 ℃ -30 ℃. The grade of diesel oil is 0\.
2. Management of other oils other oils include engine oil, hydraulic oil, gear oil, etc; Oils of different brands and grades shall not be mixed; Different kinds of excavator oils have different chemical or physical additives added in the production process; Ensure that the oil is clean and prevent sundries from mixing; The oil grade shall be selected according to the ambient temperature and application. If the ambient temperature is high, the engine oil with high viscosity shall be selected; if the ambient temperature is low, the engine oil with low viscosity shall be selected; The viscosity of gear oil is relatively large to adapt to large transmission load, and the viscosity of hydraulic oil is relatively small to reduce liquid flow resistance.
3. Lubricating oil management the use of lubricating oil can reduce the wear of moving surfaces and prevent noise. The grease shall not be mixed with dust, sand, water and other impurities during storage; Lithium base grease G2-L1 is recommended, which has good anti-wear performance and is suitable for heavy load conditions; When filling, try to squeeze out all the old oil and wipe it clean to prevent sand adhesion.
4. Maintenance of filter element the filter element plays the role of filtering impurities in the oil or gas circuit to prevent them from invading the system and causing faults; Various filter elements shall be replaced regularly according to the requirements of; When replacing the filter element, check whether there is metal attached to the old filter element. If any metal particles are found, timely diagnose and take improvement measures; Use a pure filter element that meets the requirements of the machine. The filtering capacity of fake and inferior filter elements is poor, and the surface and material quality of the filter layer do not meet the requirements, which will seriously affect the normal use of the machine.
