High Quality Fuel Water Separator Filter YN21P01068F1 For Excavator SK130-8 SK140-8 SK200-8 SK210-8 SK250-8

The role of the fuel filter

There are three types of fuel filters: Diesel filter, Fuel Filter and Gas filter. Its function is to filter out harmful particles and moisture, iron oxide, dust and other solid debris in the engine fuel gas system to 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 engine fuel supply system, and corrosion, wear, and jamming will even worsen the combustion process of diesel. Due to the high sulfur content in diesel, when combustion occurs, it will even react with water to form sulfuric acid that corrodes engine components. The traditional way of water removal is mainly sedimentation, through the funnel structure. Engines with emissions above the National III level have higher requirements for water separation, and high requirements require the use of high-performance filter media.

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

Fuel filter replacement steps:

1. Release the pressure in the combustion filter system to ensure that the oil will not be sprayed 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 the new fuel filter on the base. When the sealing ring is attached to the base, tighten it by 3/4~1 turn

Tips for using diesel filters and understand the importance of fuel filters
Misunderstanding 1: It doesn’t matter what filter is used, as long as it does not affect the current operation.
Sticking to the soil: The impact of inferior filters on the engine is hidden and may not be detected immediately, but when the damage accumulates to a certain extent, it will break out before it is too late.

Misunderstanding 2: The quality of the combustion filter is almost okay, and there is no problem with frequent replacement
Tips: 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 replaced frequently, it cannot effectively protect the common rail. system.

Myth 3: A filter that doesn’t have to be changed often is definitely the best filter
Tips: under the same conditions. High-quality filters will be replaced more frequently because they are more effective at removing impurities.

Misunderstanding 4: Filter maintenance only needs to be replaced regularly at the service station
Tips: Since diesel oil contains water, while doing regular filter maintenance, remember to drain the filter regularly during use

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