Genuine Isuzu 4HK1 turbocharger for Hitachi ZX230-3 excavator

This high-precision heavy-duty exhaust gas turbocharger assembly is an Isuzu original high-quality power component. The product is specially designed for deep matching of Hitachi medium-sized hydraulic excavators equipped with Isuzu 4HK1 turbocharged direct injection engine, and is accurately applicable to the absolute core star models in the 20 to 24 ton industry, such as Hitachi ZX200-3, ZX210-3, ZX230-3, ZX240-3, etc. The product is based on first principles optimization of fluid dynamics impeller architecture, ensuring absolute efficiency and stable output of power supply for the impeller under ultra-high speed and high temperature continuous alternating working conditions. The physical dimensions of the product packaging are approximately 280mm × 260mm × 240mm, with an overall net weight of approximately 8.5kg. It is seamlessly connected with the original factory packaging.

"Cleaning pipelines and pre lubrication (core pit avoidance): Before installation, the inlet and outlet pipelines must be thoroughly cleaned to ensure that there are no carbon deposits or impurities. Before connecting the oil inlet pipe, it is necessary to fill the top oil inlet of the turbocharger with clean new engine oil and manually rotate the impeller by hand to ensure that the fully floating bearing receives absolute lubrication within 3 seconds of initial ignition, and dry grinding is strictly prohibited.

Sealing and torque tightening: The exhaust manifold joint surface and all gaskets must be kept extremely clean, and new original high-temperature resistant gaskets must be replaced during installation. It is strictly prohibited to use any liquid sealant (to prevent it from falling off and blocking the micrometer level oil return hole after extrusion). All fastening bolts must be symmetrically and cross locked in stages using a torque wrench to the specified torque.

Idle transition exhaust: After installation, the first ignition must keep the engine running at low speed idle for 3-5 minutes, relying on idle to establish a stable oil pressure and drain the air in the bearing cavity. It is strictly prohibited to immediately press the accelerator after ignition. Normal operating loads can only be applied after confirming that the thermodynamic state is stable and there are no air leaks or abnormal noises."