In the use of excavators, it is very important to change the oil on time. If it is not replaced in time, it will accelerate the wear of parts, affect the service life, and even cause the machine to be overhauled. It will cause a safety accident, so it is very important to check the oil frequently and replace it in time.
1. Why should the excavator engine change the oil on time?
1. The engine oil has a shelf life, which will reduce performance after a long time, resulting in accelerated wear of mechanically worn parts.
2. After the engine oil runs at high temperature in the engine, its physical and chemical properties will change, and its mechanical properties will also change accordingly.
3. If the engine runs for a long time, the impurities in the oil will increase, which will increase the wear rate of mechanical parts.
2. What are the serious consequences of not changing the oil on time?
1. Failure to change the oil on time will cause the fault of low oil pressure. The most direct consequence of the low oil pressure is that it will cause semi-dry friction or dry friction between the matching parts. The engine will have obvious abnormal noise, and in severe cases, it will cause tile burn.
Burning tiles
Failure to change the oil on time will cause the following problems that cause the oil pressure to decrease:
The oil storage capacity is too small, resulting in no or little oil in the lubrication system;
Dirty or viscous oil prevents the oil pump from effectively sucking and pumping out the oil;
If the engine oil is lean or the engine temperature becomes high due to high engine temperature, it will leak from the friction of the engine.
2. Failure to change the oil on time will also cause the problem of excessively high oil pressure. If the oil pressure is too high, the gasoline filter will be damaged prematurely, causing carbon deposits in the engine cylinder and other malfunctions. It will also reduce the life of the engine.
Carbon deposit in the cylinder
Failure to change the oil on time will cause the following problems that cause the oil pressure to rise:
The viscosity of the engine oil is too large (such as the winter engine oil is not replaced by the summer engine oil in time);
The deterioration and gelation of the engine oil leads to a decrease in the fluidity of the engine oil;
The filter element or the oil passage is blocked.
3. Failure to change the oil on time will also cause the problem of excessive sludge. The sludge is generally caused by the high-pressure unburned gas, acid, moisture, sulfur and nitrogen oxides in the combustion chamber into the crankcase oil through the gap between the piston ring and the cylinder wall, and then mixed with the metal powder generated by the wear Together, it slowly accumulates, and then sludge forms.
Too much sludge
Failure to replace the engine oil on time will result in increased sludge, and increased sludge will result in clogging of filters and oil holes, resulting in difficulty in engine lubrication and increased engine wear.
4. Failure to replace the engine oil on time, the most serious consequence is the wear of various mechanical parts of the engine, such as pistons and cylinders. Once there is a problem with the piston and cylinder, the machine needs to be overhauled, and overhaul is something that every owner does not want to see.
Cylinder barrel is badly worn
Lack of engine oil, excessive sludge in the engine oil, and reduced performance of the engine oil will cause severe wear of the cylinder and piston. If you do not change the oil in time, the above problems will basically occur, so it is still very necessary to change the oil on time.
5. Failure to change the oil on time will result in high water temperature. As mentioned above, failure to replace the oil on time will result in too little oil storage, resulting in no or little oil in the lubrication system. At this time, all mechanical parts of the engine will be in a semi-dry friction or dry friction state.
The semi-dry friction or dry friction state generates a lot of heat, which makes the water temperature rise sharply.
Water temperature is too high
If the water temperature is too high, the cylinder head and cylinder body will be deformed or even damaged. If such a failure occurs, the machine will not be far from overhaul.
Two reminders:
1. When changing the oil, you must replace the oil filter at the same time. Never try to save trouble and money and ignore the replacement of the oil filter. Why is this?
Because the dirt in the filter of the old machine will destroy the quality of the new oil, which will reduce the service life of the new oil.
2. In autumn, you must remember to change the winter oil, and in the spring, you must change the summer oil, unless your oil is a four-season universal oil.
Because the engine oil is slightly thinner in winter, in summer, the engine oil will be thinner in winter, which is not conducive to the formation of oil film and will also increase the wear of mechanical parts.
In the summer, the engine oil will be more viscous after the winter, which is not conducive to the flow of the engine oil, which will cause excessive carbon deposition in the engine cylinder, which will aggravate the wear of mechanical components.
