708-2L-00680 hydraulic pump for Komatsu PC1250-8 ,PC1250LC-8 ,PC1250-8R ,PC1250SP-8, PC1250SP-8R excavator
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These high-pressure pumps are engineered for the entire PC1250-8 family, including standard, long-carriage, and "Super Production" (SP) variants.
Compatible Machine Models:
Komatsu PC1250-8 / PC1250LC-8
Komatsu PC1250-8R / PC1250SP-8R (Regional/Reinforced variants)
Komatsu PC1250SP-8 (Super Production)
Part Number Breakdown:
Main Piston Pumps: 708-2L-00680, 708-2L-00681, 708-2L-00690, 708-2H-00440, 708-1L-00800.
Gear/Transfer Pump: 705-22-40380.
2. Technical Superiority of Genuine PC1250-8 Pumps
In a mining environment, hydraulic efficiency directly translates to "tons per hour." Original pumps provide several advantages:
HPV Series Heavy-Duty Design: These pumps utilize Komatsu's HPV architecture, designed to handle the massive torque loads from the SAA6D170E-5 engine without internal fatigue.
Precision CLSS Integration: The Closed-center Load Sensing System on a PC1250 requires micro-second response times from the pump regulators. Genuine units ensure the machine can swing and lift simultaneously at maximum speed without "stalling" the engine.
Metallurgical Endurance: Original cylinder blocks and swash plates are treated with proprietary hardening processes to resist cavitation and heat-soak during 24/7 mining operations.
Pre-Set Flow Calibration: Mining pumps are pre-calibrated to factory "Standard Values." This ensures all pumps in the tandem/triple sets are balanced, preventing one pump from over-working and failing prematurely.
3. Critical Installation Protocol for Mining Pumps
Due to the massive oil volume and pressure in the PC1250-8, installation errors can be extremely costly.
Case Priming (Absolute Requirement): You must fill the pump housing with filtered hydraulic oil through the highest case drain port before starting. A dry start on a pump of this size will cause catastrophic internal failure in less than 10 seconds.
System Decontamination: If the previous pump "grenaded" (internal mechanical failure), the entire hydraulic circuit, including the massive oil coolers and the tank, must be professionally flushed.
Suction Strainer Inspection: Always replace the suction strainers and the high-pressure filters with genuine Komatsu 10-micron elements.
Air Bleeding Procedure: After installation, run the engine at low idle for a minimum of 15 minutes while cycling the controls gently to purge air from the massive cylinders and lines.
4. Global Logistics & Expertise
With over 13 years of experience in heavy mining hydraulics, we understand the urgency of a "Machine Down" (DOW) situation.
Authenticity: We supply only Original Brand New units in genuine factory export packaging.
Fitment Verification: We cross-reference your Machine Serial Number to ensure the specific shaft splines and port configurations match your regional machine variant (e.g., standard vs. SP).
Secure Freight: These pumps are extremely heavy. They are shipped in reinforced, steel-banded, export-grade wooden crates via global freight (Air or Sea) with full insurance.