708-2K-00122 708-2G-00120 Komatsu Main Pump PC2000-8 HPV375
| Model Number | 708 -2K-00122, 708-1T-00433, 708-1G-00041, 708-2G-00120 |
|---|
Product Description
Product Overview
The 708-2G-00120, 708-1G-00041, 708-1T-00433 and 708-2K-00122 are Komatsu main hydraulic pump assemblies (PUMP ASS’Y). The 708-2K-00122 is a confirmed main pump assembly for the PC2000-8 mining excavator (HPV375+375 tandem configuration). These are variable-displacement axial piston pumps matched to the open-center load-sensing system (E-OLSS). They provide direct bolt-on interchangeability with OEM units and are suitable for PC2000-8 and related large excavators (aftermarket coverage includes PC3000-6; verify serial number and interfaces).
Heavy-duty cast housing and precision piston components undergo 100% simulated duty testing to deliver high volumetric efficiency, stable high-pressure output and long service life under continuous mining and heavy earthmoving loads.
Technical Specifications
- Models: 708-2K-00122 (PUMP ASS’Y for PC2000-8, approx. 470 kg); 708-2G-00120 (PUMP ASS’Y, primarily listed for WD600-6 series, also in related listings); 708-1G-00041, 708-1T-00433 (related hydraulic pump assemblies)
- Pump type: Variable displacement axial piston pump; PC2000-8 uses HPV375+375 tandem main pumps
- System match: Open-center Load Sensing System (E-OLSS) with electronic proportional control (EPC)
- System maximum flow (PC2000-8 reference): Approx. 2317 L/min for attachment/swing/travel; approx. 324 L/min for fan drive
- Relief / set pressure (PC2000-8 reference): Attachment/swing approx. 29.4 MPa (300 kgf/cm²); travel approx. 32.9 MPa (335 kgf/cm²)
- Control method: Electronic load sensing + pressure compensation (EPC current controls displacement for power matching)
- Weight (reference): 708-2K-00122 approx. 470 kg
- Applications: Primary fitment PC2000-8; aftermarket compatibility with PC3000-6 and selected WD600-series machines (confirm serial number and mounting interfaces)
- Note: Exact single-pump displacement and maximum speed should be verified from official Komatsu service data or measured values
Key Technical Advantages
- True drop-in interchangeability: Manufactured to OEM dimensional, flange and spline standards for bolt-on replacement without hose or bracket modifications, minimizing downtime on large machines.
- High-flow HPV375 series output: Tandem large-displacement design meets the simultaneous multi-actuator demands of PC2000-8 class mining excavators.
- Precision machining & high volumetric efficiency: Tightly controlled piston, cylinder block and valve-plate surfaces minimize internal leakage for consistent high-pressure performance.
- Electronic control & power matching: EPC proportional control adjusts displacement according to load, reducing engine load and fuel consumption.
- 100% simulated duty testing: Full pressure, flow, noise and durability verification before shipment ensures reliable installation performance.
Application Areas
- Main pump replacement on Komatsu PC2000-8 large hydraulic excavators (mining and heavy earthmoving)
- Related large excavators such as PC3000-6 hydraulic system repair and upgrade
- Open-pit mining, major infrastructure and continuous heavy-duty earthmoving operations
- Equipment requiring restoration of original open-center load-sensing characteristics and high-flow output
Expert Maintenance Tips
- Thoroughly flush the hydraulic system, replace filters and fluid before installation; maintain strict ISO cleanliness to protect large-displacement pumps.
- Verify flange, shaft spline and port orientation match the original unit; run at low speed unloaded on first start and check for leaks, noise and system pressure.
- Monitor main-pump outlet pressure and EPC signals against machine set points (approx. 29.4 MPa for attachment circuits); avoid prolonged over-pressure or high-temperature operation.
- Large pump mass (approx. 470 kg) requires proper lifting equipment and precise alignment during installation.
- For extended-model applications always cross-check serial numbers and parts-catalog drawings; contact technical support for fitment confirmation when required.
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