Talking about the main content of regular maintenance of excavators

The main content of regular maintenance of excavators

① The fuel filter element and additional fuel filter element should be replaced after the new machine has been working for 250 hours; check the clearance of the engine valve.

②Daily maintenance; check, clean or replace the air filter; clean the inside of the cooling system; check and tighten the track shoe bolts; check and adjust the anti-tension of the track; check the intake heater; replace the bucket teeth; adjust the bucket clearance; check before Window cleaning fluid level; check and adjust the air conditioner; clean the cab floor; replace the breaker filter element (optional). When cleaning the inside of the cooling system, after the engine is fully cooled, slowly loosen the water inlet cover to release the internal pressure of the water tank, and then release the water; do not clean when the engine is running, the high-speed rotating fan will cause danger; when cleaning or replacing the cooling system In case of liquid, the machine should be parked on level ground.

③Inspection items before starting the engine. Check the liquid level of the coolant (add water); check the engine oil level, add oil; check the fuel oil level (add fuel); check the hydraulic oil level (add hydraulic oil); check whether the air filter is blocked; check the wires; Check whether the horn is normal; check the lubrication of the bucket; check the water and sediment in the oil-water separator.

④ Every 100 maintenance items. Boom cylinder head pin; boom foot pin; boom cylinder rod end; stick cylinder head pin; boom, stick connecting pin; stick cylinder rod end; bucket cylinder head pin ;Connecting pin of half-rod connecting rod; Rod end of bucket rod and bucket cylinder; Pin shaft of cylinder head of bucket cylinder; Connecting pin of arm connecting rod; Drain water and sediment.

⑤Maintenance items every 250h. Check the oil level in the final drive box (add gear oil); check the battery electrolyte; replace the oil in the engine oil pan, replace the engine filter element; lubricate the slewing ring (2 places); check the tension of the fan belt, and check Adjust the tension of the air conditioner compressor belt.

⑥Maintenance items every 500h. Carry out maintenance items every 100 and 250 hours at the same time; replace the fuel filter; check the height of the rotary pinion grease (add grease); check and clean the radiator fins, oil cooler fins and cooler fins; replace the hydraulic oil Filter element; replace the oil in the final drive box (only at 500h for the first time, and once every 1000h thereafter); clean the air filter element inside and outside the air conditioner system; replace the hydraulic oil vent filter element.

⑦Maintenance items every 1000h. Carry out maintenance items every 100, 250 and 500 hours at the same time; replace the oil in the slewing mechanism box; check the oil level of the shock absorber housing (back to the engine oil); check all the fasteners of the turbocharger; check the turbocharger rotor Check and replace the tension of the generator belt; replace the anti-corrosion filter element; replace the oil in the final drive box.

⑧Maintenance items every 2000h. First complete the maintenance items every 100, 250, 500 and 1000h; clean the filter screen of the hydraulic oil tank; clean and check the turbocharger; check the generator and starter motor; check the engine valve clearance (and adjust); check the shock absorber.

⑨Maintenance over 4000h. Increase the inspection of the water pump every 4000h; increase the replacement of hydraulic oil every 5000h.

Long-term storage. When the machine is stored for a long time, in order to prevent the piston rod of the hydraulic cylinder from rusting, the working device should be placed on the ground; the whole machine should be washed and dried and stored in a dry indoor environment; The machine is parked on a well-drained concrete floor; before storage, fill up the fuel tank, lubricate all parts, replace hydraulic oil and engine oil, apply a thin layer of butter to the exposed metal surface of the piston rod of the hydraulic cylinder, and remove the negative terminal of the battery, or Remove the battery and store it separately; add an appropriate proportion of antifreeze to the cooling water according to the lowest ambient temperature; start the engine once a month and operate the machine to lubricate the moving parts and charge the battery at the same time; turn on the air conditioner and run it for 5-10 minutes.

There is a saying that “a worker must first sharpen his tools if he wants to be good at his work”, effective maintenance can reduce the chance of machine failure. The above is the maintenance method of the excavator, and I hope to help friends in need.