Many people ask how many hours of maintenance is more appropriate for excavators, and how many levels of maintenance are needed. This article will share the specific time of four-level maintenance of excavator for reference only.
1. Generally, the excavator can be maintained for about 250 hours
Maintenance items: drain the water and dirt in the fuel tank; Replace the engine lubricating oil and filter element. Check the wear and damage of track roller, drag chain wheel and guide wheel, and repair as appropriate. Clean the sediment from the fuel prefilter. Fill the rotary roller with grease. Check the air conditioning compressor belt tension and adjust it if necessary. Conduct a comprehensive cleaning of the whole machine to remove dust and dirt.
2. Generally, the excavator works for about 500 hours to perform secondary maintenance
Maintenance items: check the grease height of the rotating part and add grease; Clean and check the heat sink and oil cooler heat sink. Check the wear of pin shaft and bushing, and repair or replace as appropriate. Check the crawler tensioning device, adjusting oil cylinder, etc. and add lubricating grease. Replace the hydraulic tank breather filter element. Replace the hydraulic oil filter element, etc.
3. Generally, the excavator works for up to 1000 hours to perform three-level maintenance
Maintenance content: replace the lubricating oil in the rotary mechanism box. Replace the hydraulic oil and filter element of the hydraulic system; Check the wear of the return mechanism gear, and clean and add oil. Check the installation and fastening of each part, deformation, damage and abnormal sound. Check whether the electrical components, switches and circuits are aging. Replace the lubricating oil in the final drive box; Replace the lubricating oil of the roller, drag chain wheel and guide wheel. Clean, check or replace the air cleaner element. Check or adjust the valve clearance according to the engine instructions. Tighten the cylinder head bolts according to the engine instructions. Check the clearance of turbocharger rotor and clean the carbon deposit. Replace the anti-corrosion filter element; Check the shock absorber and add lubricating oil. Check and maintain starter, engine, etc.
4. When the working hours of the general excavator reach 2000 hours, level 4 maintenance shall be carried out
Maintenance content: carry out maintenance and inspection for all hours above. Replace the hydraulic oil and clean the oil filter. Check the engine and starter. Check all shockproof rubber blocks. Conduct and record the results of each cycle test. Check the machine weldments for cracks or open welds or other structural parts for damage. Check the shock absorber, etc.
