Original Isuzu 6BG1 fuel injection pump for Hitachi ZX210LC-5G excavator

This high-precision heavy-duty mechanical fuel injection pump assembly is an Isuzu original high-quality power component. The large plunger high-pressure oil pump assembly serves as the absolute heart of engine fuel supply control, specifically designed for deep matching with Hitachi hydraulic excavators equipped with the classic Isuzu 6BG1 inline six cylinder engine. It is precisely suitable for 20 ton industry flagship models such as the Hitachi ZX200-5G, ZX210-5G, and long wheelbase ZX210LC-5G. The product is based on first principles optimization of the mechanical governor and high-pressure plunger distribution system architecture, seamlessly resisting the extreme impact under continuous alternating load excavation conditions, ensuring absolute certainty of fuel quantity and pressure delivery. The physical dimensions of the product packaging are approximately 580mm × 260mm × 340mm, with an overall net weight of approximately 22.5kg.

"Accurate timing alignment (core avoidance): Before lifting and docking, it is necessary to ensure that the engine cylinder is in the compression top dead center position. During installation, it is necessary to strictly align the timing marks between the fuel injection pump transmission gear and the engine timing gearbox to prevent the engine from failing to ignite, emitting black smoke from the exhaust, or experiencing irreversible power abnormalities due to timing misalignment.

Extreme cleaning and torque tightening: Before connecting the high-pressure oil pipe, all joint flanges and sealing surfaces must be kept extremely clean. All high-strength fastening bolts and high-pressure pipe fittings must be tightened using torque wrenches, strictly following the original factory technical specifications for multi-stage, symmetrical cross tightening, to prevent local abnormal shear stress from causing slight deformation of the pump body.

Low pressure hand pump exhaust transition: After the pipeline connection is completed, the hand pump on the fuel coarse filter must be repeatedly pressed before the first ignition to thoroughly exhaust the air in the low-pressure fuel delivery pipeline and pump body cavity. After the first ignition, keep running at low idle speed for 10-15 minutes to confirm that the thermodynamic state of the fuel is stable and there is no oil leakage before gradually applying normal operating loads."