4317008 Original Excavator Strainer for ZX470-5G

Part number 4317008 is the original oil suction filter (hydraulic oil filter) provided by Hitachi for hydraulic excavators such as ZX470-5G. This component is clearly applicable to models such as Hitachi ZX450-3, ZX470-3, ZX850LC-3, etc. For ZX470-5G, it is recommended to check the equipment nameplate to confirm its exact compatibility. As the core unit of hydraulic system oil filtration, it is used to efficiently intercept solid impurities such as metal debris, dust, and gum in hydraulic oil, protecting precision components such as hydraulic pumps, valve groups, and oil cylinders. Its common numbers include similar models such as 4317007 and 4317009, but the use of non-standard spare parts is strictly prohibited to avoid contamination or damage to the hydraulic system.

This product is a Hitachi pure oil absorbing filter cartridge, which uses a high-strength metal shell and high-performance filter paper (usually made of fiberglass composite material). The filtration accuracy is usually 10-25 μ m, and the initial pressure difference is ≤ 0.02MPa. The typical structure is a cylindrical folding design to increase the filtering area and reduce flow resistance; The sealing surface is made of nitrile rubber (NBR) or fluororubber (FKM) to ensure no leakage under high pressure. The working pressure range is about 0.1-1.6MPa, the flow rate is about 100-200L/min, and the working temperature range is -30 ℃ to+100 ℃, suitable for high vibration and high load working environments of construction machinery.

Replacement cycle: It is recommended to replace every 1000-2000 working hours, and in dusty and highly polluted environments (such as mines and crushing operations), it should be shortened to 500-1000 hours. Daily inspection: Check the filter blockage indicator (if equipped) or oil inlet vacuum gauge every week. If the vacuum value exceeds 0.03MPa, replace it immediately. Replacement steps: 1 Stop the engine and operate the hydraulic handle to release system pressure; 2. Clean the filter cartridge housing and its surroundings to prevent pollutants from entering the oil circuit; 3. Use a specialized tool to unscrew the old filter element and pay attention to collecting any spilled hydraulic oil; 4. Clean the sealing surface of the filter seat and apply a small amount of clean hydraulic oil on the sealing ring of the new filter element; 5. Manually tighten the filter element until the sealing ring contacts the filter seat, and then rotate it 3/4-1 turn (or according to the torque requirements in the manual); 6. Start the engine and run it at low speed for 5-10 minutes to check for leaks. Caution: It is strictly prohibited to use filter cartridges that have been deformed, corroded, or expired; Moisture proof, pressure resistant, and avoid high temperatures during storage