3104596 Original Excavator Air Hose for Hitachi ZX450-3

Part number 3104596 is an original air hose specially designed by Hitachi for the ZX450-3 model (with a total working weight of approximately 45 tons) large hydraulic excavator. This component is a critical connecting pipe for the engine intake system, typically used to connect components such as turbochargers, intercoolers, and intake manifolds. Its universal models usually cover the same platform models as ZX450-3, such as ZX470-3, ZX400-3, etc. As a designated pipeline by the original factory, its length and variable diameter design at both ends are perfectly matched with the layout of the engine compartment. It is strictly prohibited to use non original pipelines with dimensions that do not match, in order to avoid intake leakage, pressure loss, engine power reduction, or dust intrusion.

This product is a rubber composite air hose with a reinforcement layer. The tube body is made of black oil resistant and heat-resistant synthetic rubber, and there is usually a steel wire or fiber woven reinforcement layer inside to withstand the intake pulse and pressure (working pressure is about 0.1-0.3 MPa). Adopting a variable diameter design to accommodate different interface diameters at the connection point. The surface is smooth, with excellent ozone resistance and aging resistance. There are reinforcement ribs and clamp grooves designed at the two ends of the joint to ensure absolute airtightness in the temperature range of -40 ° C to+150 ° C and high-frequency engine vibration after being fastened with constant force spring clamps or turbocharger clamps to the metal joint, preventing unfiltered air from entering the engine. The QR code on the label is used for production traceability and quality management within Hitachi.

Installation specifications: 1 Cleaning: Before installation, clean the connection surface of the metal joints at both ends with a lint free cloth to ensure that there is no dust or oil stains. 2. Lubrication: A thin layer of silicon-based grease can be applied to the surface of the metal joint to facilitate the insertion of the hose and protect the lip edge. 3. Alignment installation: Push the hose evenly into the metal joint until it is fully in place, ensuring that the installation mark on the hose is aligned with the joint. 4. Tighten the clamp: Use a torque wrench to tighten the specialized clamp to the specified torque (usually 8-12 N · m), and ensure that the clamp is located in the reinforcement groove of the hose. Inspection cycle: Check the surface of the hose for cracks, bulges, and oil stains every 250 working hours, manually inspect the connection between the hose and the joint for looseness, and monitor for any "hissing" air leakage sound during engine acceleration.