The most practical method of excavator maintenance and maintenance

"This part is bad, what?" as the excavator machine hand, everyone should have necessary skills is the basic machine maintenance and maintenance, for your love, it is not only a tool to make money you is your partner. In the process of daily construction will inevitably cause damage to the machine, of course, these injuries are the days and months multiplying an operation process, small action will cause slight damage to the car, will make parts wear and tear caused by the days and months multiplying, and reduce the life of the machine. Therefore, the operator should select the correct construction operation and necessary maintenance skills.

The purpose of regular maintenance of excavator is to reduce the breakdown of the machine, prolong the service life of the machine, shorten the down time of the machine, improve work efficiency and reduce operation cost. As long as the fuel, lubricating oil, water and air are managed properly, 70% of the failures can be reduced. In fact, about 70% of the failures were caused by poor management.

1, fuel management

According to the different environmental temperature with different grades of diesel oil; diesel oil can not be mixed with impurities, dust and water, otherwise it will make the fuel pump premature wear; content of paraffin and sulfur in the fuel is high, will cause damage to the engine; the daily operation after the fuel tank to fill the fuel tank wall, to prevent the generation of water drop; drain valve open drain fuel tanks daily before operation; when the engine ran out of fuel or replace the filter, to discharge the air in the pipeline. The lowest environmental temperature is 0 -10, -20, -30, 0#, -10#, -20#, -35#

2, other oil management

Other oil includes engine oil, hydraulic oil, gear oil and so on; different grades and different grades of oil cannot be mixed and additive; different varieties of excavator oil in the production process to add the chemical or physical interaction is different; to ensure clean oil, to prevent debris (water, dust particles, etc.) into the environment according to the label; the temperature and the use of selected oil. The environment temperature is high, should choose the oil viscosity, low ambient temperature should choose low viscosity gear oil; oil viscosity is relatively large, in order to adapt to the larger transmission load, hydraulic oil viscosity is relatively small, in order to reduce the resistance of liquid flow.

3 、 lubricating grease management

The use of lubricating oils (butter) can reduce wear and tear on the surface of the movement and prevent noise. Grease storage, can not be mixed with dust, sand, water and other impurities; recommended lithium based grease G2-L1, good abrasion resistance, suitable for heavy load; when filling, to minimize all the old oil extrusion and clean, prevent sand adhesion.

4 、 filter core maintenance

The filter to filter impurities in the oil or gas, prevent its invasion within the system caused by the fault; according to the different kinds of filter elements (operation and maintenance manual) requires regular replacement; replacement of filters, should check whether the metal is attached to the old filter, if found to have metal particles Yi timely diagnosis and improvement measures; comply with the provisions of the use of pure filter machine. The filtering ability of the inferior filter core is poor, and the surface of the filter layer does not meet the requirements of the quality of each person and the material, and can seriously influence the normal use of the machine.

5, regular maintenance content

When the new engine is 250H, replace the fuel filter and the additional fuel filter. Check the clearance of the engine valve.

The daily maintenance; inspection, cleaning or replacement of the air filter cleaning; internal cooling system; check and tighten the crawler plate bolts; check and adjust track anti tension; check the intake heater; replacement of bucket tooth; adjust the bucket clearance; check the front window cleaning liquid; check and adjust the cab floor cleaning air conditioning; replacement; the broken filter (optional). Internal cleaning the cooling system, the engine to be fully cooled, slowly loosen water cover, release the internal pressure of the water tank, and then drain cleaning work; don't work in the engine, the high-speed rotation of the fan can be dangerous; when cleaning or replacement of the cooling fluid, the machine should be parked on the ground.

Check items before starting the engine. Check the coolant level height (water); check the engine oil level, oil; check the fuel level (fuel oil); check the hydraulic oil level (hydraulic oil); check the air filter is blocked; check the wire; check horn; check lubrication bucket; check the water and oil-water separator deposit.

Every 100 maintenance items. Boom cylinder head pin; boom foot pin; boom cylinder rod end; the bucket rod cylinder head pin; the arm and the bucket rod connecting pin; the bucket rod cylinder rod end; bucket cylinder head pin; half rod connecting pin; the bucket rod and bucket cylinder rod end bucket cylinder; cylinder head pin; the bucket rod connecting pin; oil level check box rotating mechanism (with oil); water and sediment discharge from the fuel tank.

Every 250H maintenance item. Check oil level final transmission box (add gear oil); check the battery electrolyte; replace the engine oil pan oil filter replacement engine; lubricating rotary bearing (2); check fan belt tension, and check the air conditioning compressor belt tension, and make adjustments.

The maintenance item per 500h. At the same time every 100 250H and maintenance projects; fuel filter replacement; check rotary pinion grease height (grease); check and clean the radiator radiator, oil cooler heat sink and chiller heat sink; replacement of hydraulic oil filter replacement; final transmission box oil (only for the first time in 500h when. After a 1000h); air filter cleaning device of air conditioning system of internal and external; replacement of hydraulic oil vent filter.

The maintenance item per 1000h. At the same time every 100, 250 and 500h maintenance projects; replacement of rotary mechanism inside the oil level check; shock absorber shell (return oil); check all fasteners of the turbocharger; clearance check turbocharger rotor; check and replace the belt tension of the generator; anti-corrosion filter; replacement of final drive the oil box.

The maintenance item per 2000h. First complete every 100, 250, 500 and 1000h maintenance items; clean the hydraulic tank filter; clean and check the turbocharger; check the generator, start the motor; check the engine valve clearance (and adjust); check the shock absorber.

4000H above maintenance. Check the water pump every 4000H; increase the replacement hydraulic oil every 5000h.

The long-term storage. The machine being stored for a long time, in order to prevent the hydraulic cylinder piston rod rust, the work should be placed in a device; the washed and dried and kept in dry indoor environment; if conditions are only stored outdoors, the machine should be parked in the well drained cement ground; kept filled before the fuel tank. The various parts of the lubrication, replacement of hydraulic oil and lubricating oil, the metal surface of the piston rod of the hydraulic cylinder exposed coated with a thin layer of butter, remove the battery negative terminals of the battery, or will be unloaded separately; according to the lowest environmental temperature in antifreeze adding cooling water; a month to start the engine and to operate the machine, so that the motor lubricating parts, at the same time to charge the battery; open air conditioning refrigeration operation 5-10min.