FS7090 CC190 Separator Assembly FUEL OIL WATER SEPARATOR Filter Assembly For Dongfeng DF354 DF404 Tractor

The division of the fuel filter

Fuel filters are divided into: diesel filters, fuel filters and gas filters. Its function is to filter out harmful particulate matter and water, iron oxide, dust and other solid debris in the engine fuel system, protect the oil pump nozzle, cylinder liner, piston ring, etc., reduce wear and avoid blockage. Reduce mechanical wear, ensure stable engine operation and improve reliability.

The structure of the diesel filter is roughly the same as that of the oil filter, and there are two types: replaceable and spin-on. However, its working pressure and oil temperature resistance requirements are much lower than those of oil filters, while its filtration efficiency requirements are much higher than those of oil filters. The filter element of diesel filter mostly uses filter paper, and some use felt or polymer material.

Diesel filters can be divided into diesel water separators and diesel fine filters. The important function of the oil-water separator is to separate the water in the diesel oil. The presence of water is extremely harmful to the diesel fuel supply system, and corrosion, wear, blockage and even worsen the combustion process of diesel. Due to the high sulfur content in diesel, it will even react with water to form sulfuric acid during combustion, which corrodes engine components. The traditional way of water removal is mainly sedimentation, through the funnel structure.

The diesel fine filter is used to filter the fine particles in the diesel. Diesel engines with emissions above the national three are mainly aimed at the filtration efficiency of 3-5 micron particulate matter.

Fuel filter replacement steps:

1. Release the pressure in the combustion filter system to ensure that the oil does not spray out during the disassembly process.

2. Remove the old fuel filter from the base. and clean the base mounting surface.
3. Fill the new fuel filter with fuel.
4. Apply some oil on the surface of the new fuel filter sealing ring to ensure the sealing
5. Install new fuel filter on base. After the sealing ring is installed on the base, tighten it by 3/4~1 turn

Tips for Using Diesel Filters and Understanding the Importance of Fuel Filters
Misunderstanding 1: It doesn’t matter what filter you use, as long as it doesn’t affect the current operation.
Sticking to Mud: The effect of a poor quality filter on the engine is hidden and may not be noticed right away, but by the time the damage builds up to a certain point, it will be too late.

Misunderstanding 2: The quality of the combustion filter is similar, and frequent replacement is no problem
Reminder: The measure of filter quality is not only the life of the filter, but also the filtration efficiency of the filter. If a filter with low filtration efficiency is used, even if it is changed frequently, the common rail cannot be effectively protected. system.

Myth 3: Filters that don’t need to be changed often are definitely the best filters
Hint: under the same conditions. High-quality filters will be replaced more frequently because they are more effective at removing impurities.

Myth 4: Filter maintenance only needs regular replacement at the service station
Reminder: Since diesel oil contains water, remember to drain the filter regularly during use while doing regular filter maintenance.

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