What are the contents of excavator maintenance and maintenance?

What are the contents of excavator maintenance and maintenance?

Excavator, also known as excavating machinery (excavating machinery), is an earthmoving machine that uses buckets to dig materials higher or lower than the bearing surface, and loads them into transport vehicles or unloads them to stockyards. It has become the most important in engineering construction. One of the engineering machinery.

In use, reasonable maintenance is an effective means to prolong the service life of the machine. Daily inspection is an important link to ensure that the hydraulic excavator can maintain high-efficiency operation for a long time. Especially for self-employed individuals, doing a good job in daily inspection can effectively reduce maintenance cost.

First, turn around the machine twice to check the appearance and whether there is any abnormality in the mechanical chassis, and whether there is grease flowing out of the slewing bearing, and then check the deceleration brake device and the bolt fasteners of the track. If it is a wheeled excavator, it is necessary to check whether the tires are abnormal and the stability of the air pressure.

Check whether the bucket teeth of the excavator have large wear. It is understood that the wear of the bucket teeth will greatly increase the resistance during the construction process, which will seriously affect the work efficiency and increase the wear of equipment parts.

Check the stick and cylinder for cracks or oil leakage. Check battery electrolyte, avoid below low level line.

1. Fuel management

Different grades of diesel oil should be selected according to different ambient temperatures; diesel oil should not be mixed with impurities, dust and water, otherwise the fuel pump will be worn out prematurely; the high content of paraffin and sulfur in inferior fuel oil will cause damage to the engine; daily work After the fuel tank is finished, the fuel tank should be filled with fuel to prevent water droplets on the inner wall of the fuel tank; open the drain valve at the bottom of the fuel tank to drain water before daily operation; after the engine fuel is exhausted or the filter element is replaced, the air in the road must be drained.

2. Other oil management

Other oils include engine oil, hydraulic oil, gear oil, etc.; oils of different grades and grades cannot be mixed; different types of excavator oils have different chemical or physical additives added in the production process; to ensure Clean with oil to prevent the mixing of sundries (water, dust, particles, etc.); choose the grade of oil according to the ambient temperature and usage. If the ambient temperature is high, engine oil with high viscosity should be used; if the ambient temperature is low, oil with low viscosity should be used; the viscosity of gear oil is relatively high to adapt to large transmission loads, and the viscosity of hydraulic oil is relatively small to reduce liquid flow resistance.

3. Grease management

The use of lubricating oil (butter) reduces wear on the moving surfaces and prevents noise. When the grease is stored and stored, it should 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 sticking.

4. Maintenance of the filter element

The filter element plays the role of filtering impurities in the oil circuit or gas circuit, preventing them from invading into the system and causing failure; all kinds of filter elements should be replaced regularly according to the requirements of the (operation and maintenance manual); when replacing the filter element, check whether there is metal attached to the old filter element. If there are metal particles found on the filter element, it is necessary to diagnose and take improvement measures in time; use a pure filter element that meets the requirements of the machine. Fake and inferior filter elements have poor filtering ability, 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.