One, the role of oil filter: filter impurities
Under normal circumstances, the engine parts is through the lubricating oil to achieve the normal work, but metal debris generated during the operation of the parts, into the dust, high temperature is oxidation product of carbon and water vapor will constantly mixed with oil, a long time will reduce oil service life, when severe may affect the normal operation of the engine.
Therefore, this time the role of oil filter is reflected. Simply said, the role of the oil filter is mainly filter oil in the vast majority of impurities, to clean the oil to be clean, to extend its normal service life. In addition, the oil filter should also have strong filtering capability, small flow resistance, long service life, etc..
Two, oil filter composition: shell filter
In brief, the oil filter is mainly composed of two parts: filter paper and the housing. Of course, of which there is a sealing ring, a supporting spring, bypass valve and other auxiliary parts, these auxiliary parts is not a small role, such as the role of bypass valve is that when filter paper due to impurities and failure, oil through the by-pass valve into the engine lubrication. However, only from the appearance of what we see is the oil filter this whole, filter paper, bypass valve and other parts can not see.
Three, oil filter maintenance cycle: a vulnerable parts
Typically, the brand dealers will be included in the oil filter to the vulnerable parts, FAW TOYOTA, for example, the warranty period of the oil filter for the delivery date of 6 months or less than 10000 km mileage. And in the replacement, basically in the oil, oil filter is replaced together. If the long time does not change, it is possible to cause the loss of the oil filter function, and ultimately affect the engine work.
Four, the disassembly and assembly of oil filter:
The disassembly of the oil filter is in the 4S shop maintenance, the owners will not change their own, here I just for you to bring some simple introduction. When the filter is changed, the vehicle is lifted by the lifting device, and then the oil plug is screwed off to be used for discharging oil.
After the old engine oil is discharged clean the machine filter wrench will be the old oil filter, when the car is no longer leaking oil can be installed after the new oil filter. During installation, the machine repair master will in new oil filter coated with a layer of oil, as is can achieve a better sealing effect.
Five, the pros and cons of oil filter to distinguish method:
1, appearance: the appearance of delicate, rough points
False oil filter on the surface of the shell is relatively rough printing, the font is usually blurred. Really oil filter surface of the standard font is very clear, and the paint on the surface texture is very good. Careful friends through the comparison is still relatively easy to see the difference between the.
2, filter paper: filtration capacity of the points
Fake engine oil filter impurities ability is poor, which is mainly reflected on the filter paper, filter paper will affect the oil normal circulation; and filter paper too loose will lead to a lot of that has not been filtered impurities continue with the oil flow, a long time will lead to dry friction or excessive wear of the internal parts of engines.
3, bypass valve: auxiliary role of the sub
The function of the bypass valve is to use a device that is used for emergency transport of oil when filter paper is blocked due to excessive impurities. However, most of the built-in bypass valve of the oil filter is not obvious, so when the filter paper is invalid, the oil can not be transported in time, will lead to the engine parts dry friction.
4, gaskets: sealing, oil seepage points
Although the gasket seems to be somewhat obscure, but the seal between the parts to rely on it. False oil filter gasket material is relatively poor, in the engine high temperature, high strength work is likely to cause its sealing failure, and ultimately lead to leakage of oil.