Oil-water separator is mainly used to separate fuel water and impurities with high particle size limits, and then fine filtration, called fine filtration (main filter), separates smaller impurities.
As for the current filter configuration in the Chinese market, it is fuel tank-coarse filter-low pressure oil pump-fine filter-high pressure oil pump-system fuel injection. The third layer of filter you mentioned can be arranged in another way, namely the fuel tank - coarse filter with low filtration efficiency - coarse filter with medium filtration efficiency - low pressure oil pump - fine filter - high pressure oil pump - fuel injection system.
If it is the latter arrangement, generally speaking, in order to reduce costs during maintenance, the filter element of the secondstage can be removed and placed on the first stage filter element, then replaced with a second one. -Stage filter element and rear filter element Just a fine filter.
To be safe, I suggest that once the maintenance time and kilometers have passed, it is best to replace them all, and be sure to choose original parts.
There are too many fake fuel filters in the Chinese market. If you choose wrong ones, it will have a huge impact on your high and low pressure fuel pumps and engine fuel injection systems. cause corrosion and microorganisms. Impurities containing larger particles will cause wear and blockage of the engine injection system.
You can calculate it yourself. How much money you save by replacing the fuel filter will be enough to replace a pump, not to mention the impact of engine wear. It may not even beenough to clean it. he. . .
The oil circuit is not trivial. Think about why the same batch of machines has a very harsh working environment. Why do some industrial machines have more engine problems caused by the oil circuit, while others have fewer. problems. . .
The replacement steps are as follows:
1. Remove the old one, fill the new filter with engine oil (diesel) and seal it. a little lubricating oil on the ring and tighten the filter.
2. Start the engine and check for a leak at the gasket.
The oil filter element is the oil filter. The function of the oil filter is to filter impurities, colloids and moisture present in the oil and supply clean oil to various lubricated parts.