Maintenance tips for excavators

Daily inspection work is an important link to ensure that the hydraulic excavator can maintain efficient operation for a long time, and doing daily inspection work can effectively reduce maintenance costs.

1. When the excavator stops, it is necessary to carefully check whether the anchor screws and bearing tile seat screws are loose, whether the gear meshing and lubrication of each part, and whether the bearing, power device, control system, lock, reducer, track plate, foundation parts, cables, steel cables, bucket teeth and other parts are abnormal wear and damage;

2, during the operation, pay attention to the operation of the motor, mechanical transmission and braking system, control system, cooling fan, lighting and signal, there are no abnormal phenomena, in the inspection of various problems to be found in time, timely treatment;

3. For the newly installed excavator, all parts must be filled with oil before trial operation, and the lubrication condition must be checked by shift within the first week of work; For excavators that have been shut down for a long time, all the original old dry oil must be squeezed out before use. Good lubrication can reduce mechanical wear and failure during operation. Lubrication work must be carried out in strict accordance with the time limit, oil quantity and lubricating oil type stipulated in the excavator instruction manual.

4, the filter element plays the role of filtering impurities in the oil or gas path to prevent its intrusion into the system and cause failure; Various filter elements should be replaced regularly according to the requirements of the (operation and maintenance manual); When replacing the filter element, check whether there is metal attached to the old filter element, if there are metal particles found, timely diagnosis and improvement measures; Use pure filter element in accordance with the regulations of the machine. The filtration capacity of the fake filter element is poor, and if the quality of the material on the surface of the filter layer does not meet the requirements, it will seriously affect the normal use of the machine.

5, daily maintenance; Check, clean or replace the air filter element; Clean the inside of the cooling system; Check and tighten the track plate bolts; Check and adjust track tension; Check the intake heater; Replace the bucket teeth; Adjusting bucket clearance; Check the front window cleaning liquid level; Check and adjust air conditioning; Cleaning the cab floor; Replace crusher filter element (optional). When cleaning the inside of the cooling system, after the engine is fully cooled, slowly loosen the water injection port cover to release the internal pressure of the water tank, and then the water can be released; Do not clean while the engine is working, high-speed rotating fans will cause danger; When cleaning or changing the coolant, the machine should be parked on a level floor.

6, every 250H maintenance project. Check the oil level in the final transmission box (add gear oil); Check the battery electrolyte; Replace the oil in the engine oil pan and replace the engine filter element; Lubricate slewing supports (2 places); Check the tension of the fan belt, and check the tension of the air conditioning compressor belt, and adjust.