4679980 Excavator Fuel Filter for ZX200-3

The original fuel filter part number 4679980 is the core component of the fuel filtration system provided by Hitachi Construction Machinery for the ZX200-3 hydraulic excavator (equipped with 4HK1 engine). This filter is mainly used to filter impurities, moisture, and particulate matter in diesel, and protect precision components such as the high-pressure oil pump and fuel injector of the engine. Its universal models include 4642641 and are widely applicable to Hitachi excavators of the ZX110-3, ZX120-3, ZX130-3, ZX240-3, ZX270-3, ZX330-3 and other series. As an integrated design of the original factory, it is deeply matched with the fuel pipeline of the whole vehicle. It is strictly prohibited to use non-standard auxiliary filter elements to ensure filtration accuracy and system reliability.

This product is an original fuel filter assembly, which uses a plastic and steel composite shell and integrates high-efficiency filter paper (chrysanthemum shaped structure to increase flow area) and oil-water separation device inside. Main technical parameters: height 205/193mm, outer diameter 94mm, inner diameter 26mm, filtration accuracy ≤ 10 μ m, water separation efficiency ≥ 93%. The working pressure range is 0.1-0.5MPa, the compressive strength is ≥ 1.2MPa, and the working temperature range is -30 ℃ to+100 ℃. The interface is a standard M22 × 1.5 thread, equipped with an O-ring seal (made of fluororubber). This filter complies with the ISO 4020 fuel filter testing standard and is suitable for harsh working conditions such as high dust, high vibration, and large temperature differences in excavators.

Replacement cycle: It is recommended to replace every 500 working hours or every 6 months (whichever comes first); If frequently in dusty environments or using low-quality diesel, it should be shortened to every 250 working hours. Replacement steps: 1 Release the fuel system pressure (unplug the fuel pump relay, start the engine until it stalls); 2. Position the filter (usually located on the engine compartment or chassis oil pipe); 3. Disassemble the old parts (place the oil pan below and loosen the oil pipe clamp); 4. Install new parts (pay attention to the arrow indicating the fuel flow direction and ensure that the sealing ring is intact); 5. System re inspection (start the engine and run it at idle speed, check that there is no leakage at each interface). Fault diagnosis: If there is a decrease in engine power, difficulty starting, or idle shaking, check if the filter is clogged; If the water in fuel warning light is on, drain or replace the filter element. Preventive maintenance: Check the appearance of the filter for cracks and oil leakage every 100 working hours; Every 50 working hours, manually drain the accumulated water through the drainage valve. Safety regulations: Before operation, the negative terminal of the battery must be disconnected and carried out in a well ventilated and flame free environment; Dispose of discarded filters according to hazardous waste regulations. Always use genuine original parts and operate according to the maintenance manual to ensure long-term stable operation of the fuel system.