Excavator engine is incorrectly started to cause excavator engine scrap failure, senior excavator maintenance engineers avoid excavator engine scrapping faults, and ten precautions when excavator engine starts.
1 To avoid excavator engine scrap failure, you should use the correct way to start the engine in accordance with the regulations, and do a good job in the timing of the engine.
2 Ten precautions at the time of excavator engine starts are as follows:
No coolant or add boiling water start. After the engine is started, the coolant is added, and the hot cylinder line, the cylinder head and other important components are suddenly fell or deformed by sudden cold, and the water flowing of 100 ° C in the cold body. The cylinder head and the body are also treated, and the coolant temperature should be reduced to 60 to 70 ° C.
2 Prohibition of pulling the car start. The engine pulls the car in the case of the cold car oil viscosity, which will exacerbate the wear between the moving parts, thereby reducing the life of the locomotive.
3 Prohibit no change in oil, fuel, fuel. In winter, if it is not timely, it is difficult to start with low viscosity oil and fuel, the engine is difficult to start.
4 prohibiting the open flake oil under shell and fires in the intake pipe. In order to prevent fire, application of fluctuous, coal fire in the oil bottom shell of the outer baking engine, while slowly rotating the crankshaft, so that the oil is uniform, It makes all parts to be lubricated. If the fire is started at the engine intake pipe, the ash and the hard debris in which the material combustion can be combined, resulting in, the exhaust valve is closed, and the wear of the cylinder will be accelerated.
5 For long-term use of electric plugs, flame preheater. Electrophilic plug, flame preheater heat generating body is a electric wire, and its power consumption and heat generation are very large, long-term use can damage the battery due to sharp discharge, At the same time, it can also burn the electric heating wire. Therefore, each continuous use of the electric plug can not exceed 1min, and the flame preheater is controlled within 20s each continuous time.
6 Prohibiting the oil directly to the cylinder directly. The oil is added to the cylinder. Although it can act as a seal of boosting temperature warming, it is easy to start, but the oil can not completely combust, which is easy to produce the aerosolic residue, cylinder The sealing performance decreases; in addition, the wear of the cylinder block can be accelerated, causing the power of the engine to decline, making the starting more difficult, so it cannot directly add oil to the cylinder.
7 Prohibiting gasoline directly into the intake pipe. The gasoline has a low fuel than the diesel, which combusts than the diesel. Therefore, the gasoline is poured directly into the intake pipe, which will cause a strong knocking in the engine, and the engine can occur in severe cases. Turn.
3 Prohibit long-term continuous start. The starter on the engine is in the case of low voltage and high current, and the long-term use will damage the battery. Its continuous time must not exceed 10 s; once the start is not started, it should be restarted by 15S.
4 prohibiting the start of the start of the start. The engine has just started a low temperature, the fluidity is poor, and it is easy to cause each moving part due to lack of lubrication, and the burning hugging axis occurs.
1 It is not stopped when the engine is full.
