4331923HCS Excavator Outer Filter Element for EX3600-6

Part number 4331923HCS is an original pure air filter sold by Hitachi Building Machinery (Shanghai) Co., Ltd., with the label clearly labeled as "Air Filter". This component is an external safety filter specially designed for EX3600-6 and other ultra large mining excavators. It is usually used in conjunction with the main filter element (such as 4675640) to form a secondary filtration system. Its universal models mainly cover large platform models such as EX3600-6, EX3600-5, and EX2600-6. As the last designated intake barrier by the original factory, its size perfectly matches the installation position of the safety filter element inside the filter housing

This product is a dry safety filter element, with a cylindrical main body and high-performance synthetic fibers in white/off white color. It adopts an extremely fine and uniform pleated design to achieve high filtration accuracy and is used to intercept extremely fine particles that may penetrate the main filter element. The top and bottom are equipped with sturdy plastic end caps in dark gray to ensure structural stability and provide reliable installation sealing surfaces. Its filtration efficiency far exceeds that of the main filter element, making it the last absolute line of defense to protect the engine.

Replacement cycle: The safety filter does not need to be cleaned and cleaning is strictly prohibited. The replacement depends on the maintenance and self condition of the main filter element. It is generally recommended to replace the main filter element 2-3 times (approximately 1500-2000 working hours) or replace the safety filter element once a year. In extreme working conditions with extremely high dust or when the main filter element is damaged or the seal fails, this safety filter element must be immediately inspected and replaced.