The purpose of regular maintenance on the excavator is to reduce machine failures, extend machine life, reduce machine downtime, increase work efficiency, and reduce operating costs. By managing fuel, lubricants, water and air, you can reduce your failure by 70%. In fact, about 70% of the failures are caused by poor management.
First, the fuel management should be based on different environmental temperatures to choose different grades of diesel; diesel can not be mixed with impurities, lime and water, otherwise the fuel pump will wear prematurely; the inferior fuel in the paraffin and sulfur content, will produce the engine Damage; after the daily operation, the fuel tank should be filled with fuel to prevent water droplets from forming on the inner wall of the tank; before the operation, open the drain valve at the bottom of the fuel tank to release water; after the engine fuel is exhausted or the filter element is replaced, the air in the road must be drained.
Second, the grease management The use of lubricating oil (butter) can reduce the wear of the moving surface to prevent noise. When storing and storing grease, do not mix dust, sand, water and other impurities. When filling, try to extrude all the old oil and wipe it clean to prevent sand from sticking.
3. The filter element of the filter element acts to filter the impurities in the oil path or the gas path, preventing it from invading the inside of the system and causing malfunction; various filter elements should be replaced regularly according to the requirements of the operation and maintenance manual; when replacing the filter element, it should be checked whether Metal is attached to the old filter element. If metal particles are found, timely diagnosis and improvement measures are taken; use a pure filter element that meets the machine specifications. The filter capacity of the counterfeit filter element is poor, and the surface of the filter layer and the material quality of the filter layer are not in accordance with the requirements, which will seriously affect the normal use of the machine.
Fourth, the content of regular maintenance:
1 After the new machine is working 250H, the fuel filter and the additional fuel filter should be replaced; check the clearance of the engine valve.
2 routine maintenance; check, clean or replace the air filter; clean the inside of the cooling system; check and tighten the track plate bolts; check and adjust the track tension; check the intake heater; replace the teeth; adjust the bucket clearance; Window cleaning liquid level; check and adjust air conditioning; clean the floor of the cab; replace the breaker filter (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 before releasing the water; do not perform cleaning when the engine is working, the high-speed rotating fan may cause danger; when cleaning or replacing the cooling When the liquid is in use, the machine should be parked on a level surface; the coolant and corrosion preventer should be replaced.