Used excavator using diesel oil is essential, mainly from the lubrication, cooling, cleaning and so on. Therefore, many drivers will pay attention to check the oil in the oil, according to the standard Add, but it ignores the check the oil quality and oil change has changed, causing some of the engine's moving parts are always in poor lubrication operating environment to accelerate each mechanical wear and tear. Under normal circumstances, the loss of oil is not large, but very easily contaminated, thus losing a role in protecting the diesel engine. In the diesel engine operation, the used excavators merchant site, many contaminants (fuel incomplete combustion of soot, coke and fouling, etc.) will enter into the engine oil. For new or overhauled machinery, after the commissioning of impurities will be more, if the increase is not only eager to change in use, can easily lead to bush-burning, axle and other accidents. In addition, even if the replacement of oil, some drivers due to the lack of maintenance experience or the easy way, will not be thoroughly cleaned when changing the oil passages, mechanical impurities still remains in the sump and the oil circuit. Used excavator plunger injection pump test of ridicule, many engineering machinery maintenance personnel do not pay attention to check construction machinery piston stroke margin. The so-called plunger stroke margin, used excavators businesses, refers to the amount of movement of the plunger by the cam on the camshaft after top dead center supremacy, but also to continue upward. Adjusted supply start time, the reason also check the travel allowance, travel allowance because the plunger and plunger sleeve worn related. After the plunger and sleeve wear, the plunger movement to some to start up more oil, used excavators recycling businesses, so that the oil supply start time delayed. When screwing the adjusting bolt to adjust or switch thicker pads, pads, used excavators business sales, the lowest position of the plunger on the move, the plunger stroke margin decreases. Therefore, when the fuel pump engineering machinery maintenance, debugging, first check the travel allowance, to determine whether the fuel pump also allows you to adjust. Used excavator business _ _ Kim Ho used excavators used excavators businesses recover from Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Used excavator business _ _ Kim Ho used excavators used excavators business recovery is Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Mr. Chairman.