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if there is a black smoke when drivers first start, after a period of time and start the black smoke disappear gradually, it is normal phenomenon, if you have doubts can check (drivers a / Oil filter, diesel filter, air filter. Actually not three excavator filter, two diesel filter, a coarse filter, a filter, an oil filter, two spatial filter, a filter, a filter, two hydraulic oil filter, an oil inlet and an oil return, some excavator and the guide on the filter) 。
1, common failure cause analysis abnormal injector fuel injection spray; Spray too much; Uneven injection of oil into the engine combustion chamber; The quality of diesel oil is bad. Cylinder pressure is not enough, the combustion is not sufficient.
2, conduct all-round inspection immediately to mend the injector, ensure stable atomization, does not produce oil droplets. In order to reduce the engine air intake system resistance, immediately to maintain clean air filter cartridge, can guarantee the accuracy of the phase distribution. Precision on the calibration table to mend the fuel injection pump, trimmed fuel supply advance Angle. Choose completely conform to the specifications of the fuel. Burning high cetane number of diesel, cetane value of 45 ~ 60, sulfur content should be low.
3, accurate operation habit in use should be uniform, precise operation. If the engine is in normal operation, all of a sudden fierce foot throttle, also can appear the phenomenon of exhaust smoke. To ensure that the cylinder seal. Such as piston ring wear serious, should be replaced excavator accessories ( Piston ring) ; Such as piston and cylinder liner wear is also serious, also should be replaced; If the valve is closed is bad, should be grinding.
is excavator smoke above solution, the master again remind excavator, must do in your leisure time repair and maintenance of excavator parts, if there is damage to the timely replacement. 【 Mechanical 】 Some information from the Internet, and strive to secure timely, accurate, aims to deliver more information, does not represent the views or responsibility for their authenticity. If this net reprint information involves the issues such as copyright, please contact with this net.
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