There are many hydraulic components in the engineering machinery and need sufficient hydraulic oil. When the hydraulic oil because of the use of long deterioration and need to replace, some people mistakenly believe that only the oil in the hydraulic cylinder shining, full of new hydraulic oil can. However, the hydraulic tubing and control valves still have many old hydraulic oil, the equipment used to mix the old oil will accelerate the deterioration of the new oil.
The correct oil change step should first drop the hydraulic oil in the cylinder, clean the hydraulic cylinder after adding the new hydraulic oil, and then remove the Loop Explorer. Start the engine after low-speed operation, so that the oil pump, respectively, to operate the agencies, the hydraulic oil will be the circuit of the old oil by one, until the return to the oil flow of new oil outflow, finally, will return to the oil explorer and the tank connection, to the fuel tank to supplement the new hydraulic
Of course, this change of oil also has its defects, said with the pilot loader bar, so the oil, first idle speed, the pilot oil pressure has 35 kg, just launched the machine, the pilot (is the new oil) to the back of the tubing, is to prepare 3 barrels of hydraulic oil is not necessarily enough, in addition, the back of the tubing is not only one, need to be dismantled individually, so it is troublesome to do.
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