708-3D-00020 hidraulična pumpa za Komatsu PC130-8 PC138US-8 bagera

1. Part Number Evolution & Compatibility
These numbers represent the engineering progression of the same pump family. The -00030 is the latest factory revision, offering improved internal seal longevity and refined regulator response.

OEM Part Numbers: 708-3D-00020, 708-3D-00021, 708-3D-00030

Machine Fitment: * Komatsu PC130-8

Komatsu PC138US-8 (Ultra-Short Tail)

Komatsu PC138USLC-8

Condition: Genuine Original Brand New

2. Technical Superiority of the Dash-8 Original Pump
The PC130-8 and PC138US-8 rely heavily on the communication between the engine's ECM and the pump's LS (Load Sensing) valve.

Matched Power Curves: The original regulators are factory-set to the specific torque curve of the Komatsu SAA4D95LE-5 engine. This prevents the "engine bogging" common with aftermarket pumps that aren't calibrated to the Dash-8's logic.

Precision in Tight Spaces: The PC138US-8 is often used in confined urban environments. The genuine pump provides the ultra-fine "metering" or "creep" control necessary for working inches away from structures.

High-Pressure Reliability: These units are built to sustain continuous pressures of 34.3 MPa (343 bar). The original metallurgy in the cylinder blocks and piston sets prevents internal "blow-by" and excessive heat generation.

3. Expert Installation: The "Must-Do" Protocol
To protect a high-value original pump and ensure your warranty remains valid, follow these four critical steps:

Mandatory Case Priming: Before cranking the engine, you must fill the pump housing with clean hydraulic oil through the highest case drain port. Running the pump "dry" for even 5 seconds will cause the piston shoes to gall the swash plate, leading to immediate failure.

System Decontamination: If your old pump failed mechanically (sending metal shavings into the system), you must flush the hydraulic tank, clean the oil cooler, and replace the pilot filters.

Filtration & Oil: Always use new genuine Komatsu suction and return filters. We recommend ISO VG46 anti-wear hydraulic oil for standard operating temperatures.

Air Purging: After startup, run the engine at low idle for 10 minutes. Slowly cycle the boom, arm, and bucket to their full extent several times to purge trapped air from the hydraulic circuit.

4. Global Logistics & Support
Authenticity: We provide only genuine brand-new units in original factory packaging, complete with protective port plugs.

Fitment Verification: Every pump is cross-referenced against your Machine Serial Number to ensure the input shaft spline and mounting pilot are a 100% match.

Shipping: Units are secured in reinforced, moisture-protected export wooden crates and shipped via DHL, FedEx, or UPS, typically arriving in 3 to 7 business days.

To provide an accurate quote and confirm current stock for the 708-3D-00030, please provide your Machine Serial Number and delivery location.