4617512 Original Excavator Strainer for ZX35B

Part number 4617512 is the original filter screen provided by Hitachi for the ZX35B series (with a total working weight of approximately 3.5 tons) ultra small hydraulic excavator. This filter is mainly used in hydraulic systems and is likely a precision filter for return oil lines or pilot oil lines. Its universal models usually cover ultra small models on the same platform with similar tonnage and hydraulic system design, such as ZX35B, ZX35U, ZX50, etc. As the core filtering component of the original factory, its interface size, filtering accuracy, and system flow and pressure are perfectly matched

This product is a metal fiber sintered or high-strength filter paper folding filter. The main body is a gray brown cylindrical metal filter material, which adopts an extremely fine and uniform longitudinal fold design to achieve maximum filtration area and excellent pollutant holding capacity within a limited volume. The top is a light gray engineering plastic end cap, and the inner side of the end cap is designed with an O-ring sealing groove to ensure reliable sealing after installation. The central circular hole is the oil outlet. Its filtration accuracy is high, usually 20-40 microns, which can effectively intercept small wear particles in the oil. The working pressure depends on its application circuit (the return oil filter is usually 0.1-1.0MPa, and the pilot filter may be higher), with a temperature resistance range of about -20 ℃ to+100 ℃, and can withstand long-term immersion in hydraulic oil. Its core function is to ensure that the oil flowing back to the tank or entering the pilot system is highly clean.

Replacement cycle: It is recommended to replace it every 1000 working hours or once a year. In high pollution conditions such as dust and fragmentation, the working hours should be shortened to 500. Replacement steps: 1 Shutdown pressure relief: Turn off the engine and operate all handles to release residual system pressure. 2. Disassemble old parts: Place an oil pan under the filter screen and use tools to remove the old filter screen. 3. Clean installation: Thoroughly clean the sealing surface of the filter seat with a lint free cloth. 4. Install new parts: Apply a small amount of clean hydraulic oil on the top sealing ring of the new filter screen (4617512), place it in the installation seat, tighten it by hand until the sealing ring contacts the base, and then use tools to tighten it 3/4 to 1 turn (reference torque 15-25 N · m).