Excavator maintenance in order to prevent the occurrence of excavator fault, in the daily use process need to pay great attention to the maintenance of the excavator. Routine maintenance, including inspection, cleaning or replacement of the air filter for internal cleaning; cooling system; check and tighten the crawler plate bolts; check and adjust track anti tension; check into the gas heater; replacement of bucket teeth; adjusting bucket clearance; checkthe front window cleaning liquid level inspection, cleaning; conditioning; the cab floor; replacing the broken filter(optional). Internal cleaning the cooling system, the engine completely cooled down, slowly loosen the injection cover,release the internal pressure of the water tank, and then the water; but to cleaning work into the work in the engine,the high-speed rotation of the fan can be dangerous; when cleaning or replacement of the cooling fluid, should be machine park at ground level. At the same time to check in before starting the engine coolant level height (water);check the engine oil level, oil; check the fuel oil (fuel oil); check the hydraulic oil level (add the hydraulic oil); check the air filter is clogged; check the wire; check horn is normal; check lubrication bucket; check oil water separator in thewater and sediment.