YB60000068 YB60000069 HPV118 Hitachi ZX200-5G ZX210-5G ZX240-5G hydraulic pump

This high-precision heavy-duty hydraulic main pump assembly adopts the classic HPV118 series double inclined disc high-pressure plunger pump model from Hitachi, with original part numbers (or alternative codes) of YB60000068 and YB60000069. As the absolute fluid power heart of the entire vehicle system, this assembly is specially designed for Hitachi's new generation of green and environmentally friendly medium-sized hydraulic excavators, seamlessly matching core star models in the 20 to 24 ton industry such as ZX200-5G, ZX210-5G, and ZX240-5G. The product is based on first principles optimization of ultra-high pressure flow channels and full power control logic, perfectly carrying the power load under frequent earthwork excavation and high-frequency reversing composite working conditions, ensuring absolute certainty of power output. The physical dimensions of the product packaging are approximately 680mm × 360mm × 390mm, with an overall net weight of approximately 125kg. The original factory standard position is precisely aligned.

"Extreme cleaning and torque tightening: Dust removal treatment is required for unpacking and lifting environments. All high-pressure oil pipes and feedback signal pipes must be thoroughly cleaned before connecting to a new pump. Tightening bolts must be done using a torque wrench strictly in accordance with the original factory standard torque for symmetrical and phased cross tightening, to prevent local stress unevenness from causing slight stress deformation of the shell.

Forced oil filling (core pit avoidance): After the main pump is lifted in place and the pipeline connection is completed, clean hydraulic oil must be filled from the top oil injection/exhaust port of the main pump before starting the engine. It is strictly prohibited to start dry grinding, otherwise the internal rotating components will undergo irreversible physical erosion within 3 seconds of ignition.

Low pressure transition and full exhaust: After the first ignition, the engine must be kept idling and running at low pressure for 10-15 minutes for automatic exhaust and thermodynamic adaptation of the entire system. After the oil temperature and pressure stabilize and all bubbles are completely expelled, normal operating loads can be gradually applied."