Maintenance secrets of rotary digging engine in winter
For rotary drilling machine, the engine is the source of equipment power, just like the human heart, to protect, if there is a small problem, must be resolved in a timely manner. For example, the air filter precision is small, leading to the engine ash into the early wear, maintenance, do not pay attention to the protection of the fuel port, leading to dust with oil into the engine, resulting in oil pump wear and other problems, are due to the entry of foreign bodies and lead to.
The engine maintenance needs attention:
First, lubricating oil mainly plays a role in lubrication, in addition to cooling, cleaning, sealing, rust prevention. As the oil runs through the system, it transfers the heat generated by the engine through the oil cooler to the antifreeze so that the engine works in a suitable and stable temperature range. The oil will deteriorate over time, and the additives will gradually fail because of temperature. At this point, we need to replace the new oil.
Two, how long then replace the oil is appropriate, the provisions of each manufacturer are not the same, for example leiwo rotary drill is actually using the Carter engine, Carter once every 250 hours to replace oil and Cummins regulation replaced every 500 hours of use, or make two manufacturers the oil is quite different. In fact, the oil replacement cycle is determined by the sulfur content of diesel, the replacement cycle of sulfur content in diesel oil in more than 0.5% will need to shorten the corresponding oil label should be replaced, but we really measure so professional to do so in accordance with the provisions of manufacturers is relatively reliable.
Three, replace what brand, what label of the engine oil? - here it is necessary to tell you about how the oil label is divided. Oil classification is now used in two ways, one is the classification of API (American Petroleum Institute American Petroleum Institute) standards -- assessment of oil quality series, the first letter of C is S in diesel oil, the oil is said, if two signs appear at the same time it said diesel gasoline universal oil. In addition to a SAE (Society of Automotive Engineers American Society of Automotive Engineers) standards -- assessment of oil viscosity, such as the common SAE 15W-40 W is the abbreviation of Winter, on behalf of W in front of the winter, the smaller the number, the low temperature viscosity is small, low temperature flow performance is good, the car will start more easily, the lowest temperature the oil is lower. The larger the number behind the W, the better the viscosity of the oil at high temperature (such as long distance running on the high speed road), the higher oil film strength and better protection effect. The highest temperature applicable to the engine oil is higher.
Each moment manufacturers claim to oil are added according to what special additives of their own equipment situation to ensure a longer service life of the engine, but now there are many manufacturers are producing their engines? Generally the traditional fuel injection pump type engine to use CE or CF grade oil is no problem, you need to use the EFI engine CF4 or CG4 grade oil. It is very important to choose the right engine oil according to the environmental temperature of the equipment location. At present, all the manufacturers use the multi-stage oil, and the 15W-40 belongs to the multi stage engine oil. Its applicable temperature range is -20-40 degrees centigrade.
Four, finish the oil, now talk about the filter, the oil filter is best to choose the original parts, although these are also manufacturers of OEM, but at least if in the process of using what problems can find manufacturers claim (out of warranty period does not matter). A good filter can filter out impurities such as abrasive particles, iron filings and so on, which will keep the oil clean, so that the fine oil passages on the crankshaft and camshaft will not be blocked. The internal filter is a folded filter paper, folding is to increase the filtration area, the general filter base will have oil bypass valve, its role is to filter the blockage in the case can bypass the oil to ensure that the whole system will not cause greater failure due to lack of oil.
Five engine maintenance, there is a diesel filter, diesel filter manufacturers must choose formal, formal production of filter paper filter filter aperture remained at 2-5 microns (the thickness of a human hair is about 70 microns), so in order to ensure the filter filter precision, filter out most of the impurities in diesel oil. Because it is related to the service life of the fuel injection system, diesel filter filtration precision quality is not up to the requirements, once a user to buy a us that he said this is what you had broken filter ah, installed in less than two days on the alarm, I bought a used outside month all right, our parts manager smiled and said to him, your school is better than the filter clogging pump. After the explanation of the part manager, the user has understood the truth, and has been using the genuine filter, the original may be half an year to have a fuel injection pump, and then basically a year without school. Air filter should pay attention to cleaning at ordinary times, general air filter can use compressed air for purging, purging to the required number of times to replace the new. Replace the words is not what to say, put the oil to make the equipment parked on a flat ground, the best time of the hot oil will go, time can be a little long, try to let the old oil dry clean, do not pay attention to the ground, the pollution of the environment is not good add oil! We must pay attention to the cleanliness of oil height and the surrounding environment, to avoid the dust entering, refueling can be carried out using occluder occlusion. Pay attention to the oil level, the engine itself will consume the oil, so add the oil as much as possible to add to the middle of the scale. Install the machine filter, the filter must pay attention to the absolute can not to the center of the filter into the oil, just need to put a little oil on the rubber ring, and then hand tightening can be.
Finally, after the maintenance done, must start the engine idle running for a few minutes to see whether there is oil leakage and other problems, but also to check the fan, pump belt tightness, the connection tube interference, whether the clip loose and so on, daily need to do inspection.
In short, the engine is powerful, but it is also very fragile, the majority of owners need to machine hard care, especially the weather too hot or too cold, one does not pay attention to, possibly will cause the engine to "strike", we should learn a lesson.
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