For mechanized construction company, engineering machinery technology condition is good or not is direct factors of normal production of the enterprise.In the case of a engineering machinery hydraulic transmission, the normal operation of hydraulic system is one of the main sign of the state of its good technology.Qualified hydraulic oil system is the guarantee of reliable operation, correct maintenance is essential for reliable operation of the hydraulic system.
1. Choose a suitable hydraulic oil in the hydraulic system plays a transfer pressure, lubrication, cooling and sealing effect, the hydraulic oil choice is inappropriate early malfunction of hydraulic system and the main reason for decline in durability.Should press random "instruction manual" in the regulation of hydraulic oil brand choice, special circumstances need to use the generation of oil, to its performance is the same as the original brand performance.Different type of the hydraulic oil cannot be mixed use, to prevent the hydraulic oil to produce chemical reaction, the performance change.Cannot use the air filter.
2.To prevent solid impurities mixed with clean the hydraulic oil hydraulic system is the life of the hydraulic system.There are a lot of precision coupling in the hydraulic system, if the solid impurity invasion will cause a precise accidentally strain, hairpin, oil blockage, endanger the safe operation of hydraulic system.Can prevent the invasion of solid impurities system from the following several aspects:
2.1 The hydraulic oil added must be filtered, reliable refueling tools should be clean.
2.2 Remove the hydraulic tank of fuel cap, filter cover when maintenance, test hole, hydraulic tubing parts, cause system oil when exposed to avoid dust, remove the parts need to thoroughly clean before they can open.Clean the filter oil change at the same time.
2.3 cleaning oil hydraulic system must use the same brand and the system of the hydraulic oil, the oil temperature is between 45 ~ 80 ℃.Hydraulic system to clean more than three times repeatedly, each time after washing, it all while oil heat release system.After completion of cleaning filter, add new oil after replacement of the new filter.
3.Prevent air and water invasion of the hydraulic system
3.1.Prevent air invasion of hydraulic system Hydraulic oil compression will increase after much air come into oil,which reduce efficiency result in insecurity. In addition, the air will oxygenate hydraulic oil, which causes the deterioration of the oil.
Pay attention to the followings in case of air invasion
1)According to instruction manual,eliminate air in hydraulic system quickly after maintenance and oil change.
2)Oil level should always above oil suction pipe of hydraulic oil pump,hydraulic suction line must be properly sealed.
3)Drive shaft of oil pump should be properly sealed.
3.2 Prevent water invasion of the hydraulic system Oil contains much moisture, can rust the hydraulic components, cause oil emulsification metamorphism, reduce lubricating oil film strength,increasemechanical wear and tear.Oil contains much moisture should be filtered,dry paper filter replacement each time .
4.Regular maintenance attention
Clean deposits attached to the filter mesh.If found too much metal powder on the mesh,its means that oil pump has been damaged.Take measures then restart.If found mesh damage,dirt accumulation, should change filter mesh in time, the oil can be replaced if necessary.