209-3258 plunger pump For cat 980G II wheel loader

209-3258 plunger pump For cat 980G II wheel loader Featured Image
  • 209-3258 plunger pump For cat 980G II wheel loader

Short Description:

187-9090 (alternate part number 10R-6685) variable axial plunger pump is aftermarket replacement for Caterpillar 735,730B articulated dump truck.

Product Detail

Product Tags

description

209-3258 axial variable piston pump serves as core hydraulic power source for CAT980G II wheel loader. Driven by 3406E engine, it converts mechanical power into adjustable high-pressure hydraulic energy to feed bucket lifting, tilt and steering system. Built-in load sensing control valve dynamically modifies pump displacement based on real-time load. When lifting heavy material bucket, it delivers large flow and high pressure; during travelling or light-load operation, it reduces displacement to save engine power and reduce hydraulic heat accumulation. Core internal components including plungers, cylinder block, valve plate and slippers are forged from high-strength alloy steel, processed with precision grinding and nitriding hardening treatment. The friction pair maintains stable volumetric efficiency under repeated impact and cyclic load typical for quarry loading work. The thick cast iron pump housing undergoes stress relief annealing to eliminate casting residual stress, resisting heavy impact and continuous vibration in dusty stockyard and quarry roads.

product parameters

Part No：209-3258
Product Type：Variable Displacement Axial Piston Pump
Applicable Equipment：CAT 980G II Wheel Loader, 3406E Engine
Control Mode：Load Sensing Swash Plate Control
Displacement：72 cc/rev
Max Instantaneous Peak Pressure：33 MPa (330 bar)
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-25℃ ~ +110℃
Main Material：High-density cast iron housing, high-strength alloy steel core components, FKM fluorine rubber seal
Surface Treatment：Precision grinding, nitriding hardening, stress relief annealing, anti-rust coating
Shaft Specification：Original standard splined shaft
Interchangeability：1:1 OEM original interchangeable, direct installation without modification
Product Condition：Brand new aftermarket part, 100% hydraulic bench tested
Packaging：Independent anti-rust packaging + export wooden case

advantage

- 1:1 OEM fully interchangeable, bolt-on installation without modification
Manufactured strictly according to CAT original hydraulic drawings for 980G II wheel loader. Mounting holes, oil ports and spline shaft fully match original part. Direct replacement shortens machine downtime and cuts quarry site maintenance cost.
- Nitrided alloy steel friction pair, stable performance under heavy loading cycles
Plunger, cylinder block and valve plate adopt deep nitrided alloy steel. It keeps stable volumetric efficiency during long-time bulk material loading, reduces internal leakage and extends service life under frequent impact load.
- Reinforced thick cast iron housing, excellent anti-shock and dust resistance for quarry site
Thickened reinforced cast iron housing with stress relief treatment. It withstands continuous bumping vibration and heavy dust on quarry and stockyard roads, preventing pump housing deformation and cracking under peak load.
- Complete bench inspection before delivery, consistent performance and low failure rate
Each pump undergoes pressure retention, flow curve and load-sensing response testing. Strict QC meets OEM hydraulic system requirements for CAT large wheel loaders.

FAQ 

Q1: Which machine does 209-3258 plunger pump fit?
A1: This hydraulic plunger pump is designed for CAT980G II wheel loader with 3406E engine, supplies hydraulic power for bucket lifting, tilting and steering. It is not compatible with other CAT wheel loader generations. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides pressurized hydraulic oil for bucket lifting and tilting, as well as vehicle steering system. It handles heavy bulk material loading, stacking and material transfer for quarry and stockyard operation.

Q3: What symptoms appear when the plunger pump is worn?
A3: Common signs: slow bucket lifting speed, insufficient lifting capacity under full load, steering becomes heavy, abnormal noise generated from pump body, oil leakage at shaft seal and pressure drop under heavy load.

Q4: What inspection items should be checked before installing new pump?
A4: Inspect lift cylinder, tilt cylinder, steering valve and filter assemblies. Flush hydraulic tank and pipelines thoroughly to remove metal debris. Replace contaminated hydraulic oil before assembly.

Q5: Why the wheel loader still lifts slowly after pump replacement?
A5: Fault may not come from pump. Check relief valve pressure setting, stuck control spool, blocked filter, damaged cylinder seal or trapped air in hydraulic circuit. Air bleeding is required after installation.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

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our warehouse

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