The purpose of regular maintenance of the excavator is to minimize the failure of the machine and extend the service life of the machine; shorten the downtime of the machine; improve work efficiency and reduce operating costs. As long as fuel, lubricating oil, water and air are managed, the number of failures can be reduced by 70%. In fact, about 70% of failures are caused by poor management.
1. The management of fuel oil should use different grades of diesel oil according to different ambient temperatures; diesel oil should not be mixed with impurities, lime soil and water, otherwise the fuel pump will wear prematurely; the high content of paraffin and sulfur in poor quality fuel will produce engines Damage; fill the fuel tank with fuel after daily operations to prevent water droplets from forming on the inner wall of the tank; open the drain valve at the bottom of the fuel tank to drain water before daily operations; after the engine runs out of fuel or replaces the filter element, the air in the road must be exhausted. Minimum ambient temperature 0 ℃ -10 ℃ -20 ℃ -30 ℃ Diesel brand 0 # -10 # -20 # -35 #.
2. Management of other oils Other oils include engine oils, hydraulic oils, gear oils, etc .; oils of different brands and different grades cannot be mixed; different types of excavator oils added in the production process play a chemical or physical role The additives used are different; it is necessary to ensure that they are cleaned with oil to prevent mixing of debris; according to the ambient temperature and use, select the oil label. When the ambient temperature is high, the motor oil with high viscosity should be selected. If the ambient temperature is low, the oil with low viscosity should be selected. The viscosity of the gear oil is relatively large to adapt to the larger transmission load. The viscosity of the hydraulic oil is relatively small to reduce the liquid flow. resistance.
3. Lubricating grease management The use of lubricating oil can reduce the wear of moving surfaces and prevent noise. When the grease is stored, it must not be mixed with dust, sand, water and other impurities; it is recommended to use lithium-based grease G2-L1, which has good anti-wear performance and is suitable for heavy-duty working conditions; when filling, try to squeeze out all the old oil Remove and wipe clean to prevent sand from adhering.
4. Maintenance of the filter element The filter element plays the role of filtering impurities in the oil or gas path, preventing it from invading the system and causing failure; various filter elements should be replaced regularly according to the requirements; If any metal particles are found on the filter element, timely diagnosis and improvement measures should be taken; use pure filter elements that comply with machine regulations. The filtration capacity of the inferior and inferior filter element is poor, and the quality of the individual and material of the filter layer does not meet the requirements, which will seriously affect the normal use of the machine.
