Liebherr 9074208A Axial Piston Hydraulic Pump LPV250 Replacement Part

This high-precision heavy-duty hydraulic main pump assembly adopts the classic LPV250 series inclined disc axial piston pump architecture from Liebherr, with the original core part number 9074208A. As the absolute core heart of high-pressure fluid power for the whole machine, this assembly is specially designed for Liebherr's high standard heavy engineering machinery and mining equipment. As a high-end replacement part, it has high platform compatibility and original interchangeability. The product is based on first principles optimization of 250cc large displacement flow channels and anti alternating load rotating components, perfectly carrying continuous high flow, high-pressure excavation and heavy load lifting conditions, ensuring absolute certainty of power output. The physical dimensions of the product packaging are approximately 820mm × 450mm × 480mm, with an overall net weight of approximately 210kg.

"Extreme cleaning and torque tightening: Before lifting and docking, the installation surface of the frame flange and the transmission spline shaft must be kept absolutely clean. All high-strength fastening bolts must be tightened using torque wrenches, strictly following the original factory torque standards for symmetrical and multi-stage cross tightening, to prevent local stress concentration from causing slight deformation of the shell.

Forced oil injection (core pit avoidance): After the main pump is lifted into place and the pipeline connection is completed, clean hydraulic oil must be filled from the top oil injection/exhaust port of the main pump and manually turned before starting the engine for the first time. 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 at low pressure for 10-15 minutes for automatic exhaust and thermodynamic adaptation of the entire system. After observing that there are no bubbles, no abnormal noises, and stable pressure in the circuit, normal operating loads can be gradually applied."