(1) The fuel filter element and additional fuel filter element shall be replaced after the new machine has worked for 250h; Check the engine valve clearance.
(2) Routine maintenance; Check, clean or replace the air filter element; Clean the inside of the cooling system; Check and tighten the track shoe bolts; Check and adjust the reverse tension of the track; Check the air inlet heater; Replace the bucket teeth; Adjust bucket clearance; Check the front window washer fluid level; Check and adjust the air conditioner; Clean the floor in the cab; Replace the crusher filter element. When cleaning the inside of the cooling system, after the engine is fully cooled, slowly screw the water injection cap to release the internal pressure of the water tank, and then drain the water; Do not clean the engine when it is working. The high-speed rotating fan will cause danger; When cleaning or replacing the antifreeze coolant, park the machine on a level ground.
(3) Check items before starting the engine. Check the coolant level; Check the engine oil level and add oil; Check the fuel level; Check the hydraulic oil level; Check whether the air filter element is blocked; Check wires; Check whether the horn is normal; Check the lubrication of the bucket; Check the water separator for water and sediment.
(4) Every 100 maintenance items. Komatsu excavator repairs the electrical parts and main components of engine, hydraulic device, height control engine and hydraulic device, which are all developed and produced by Komatsu company. Patrol the oil level in the rotary mechanism box; Drain water and sediment from the fuel tank.
(5) Maintenance items every 250h. Patrol the oil level in the final drive box; Check battery electrolyte; Replace the oil in the engine oil pan and replace the engine filter element; Lubricate the slewing ring; Check the tension of fan belt and air conditioning compressor belt and make adjustment.
