Is your Komatsu GD705 motor grader losing hydraulic efficiency during fine grading? Our OEM-spec Hydraulic Main Pump (708-1U-00280 / 7081U00280) delivers exact performance for Komatsu GD705 series, ensuring blade control responsiveness at 30% lower cost.
Engineered for Motor Grader Precision
This GP Hydraulic Pump is precision-manufactured to match Komatsu OEM part 708-1U-00280, critical for maintaining the hydraulic stability required for:
✅ Accurate Blade Control: Consistent pressure for smooth surface finishing
✅ Reduced Cavitation: Optimized inlet design prevents air bubbles
✅ Thermal Management: Handles extended operation in high-heat conditions
✅ Zero Downtime Installation: Direct bolt-on fit for GD705-1 to GD705-7 models
✅ Leak-Free Guarantee: Triple-layered shaft seals rated for 5,000+ hours
Critical Symptoms Addressed:
• Unresponsive blade adjustments
• “Chattering” during fine grading
• Hydraulic system overheating alarms
• Increased engine load during operation
• Visible hydraulic oil foaming
Technical Specifications:
| Parameter | Specification |
|---|---|
| OEM Part # | 708-1U-00280 / 7081U00280 |
| Compatibility | Komatsu GD705 all series (GD705-1/3/5/7) |
| Displacement | 64 cm³/rev (±1% tolerance) |
| Max Operating Press. | 24.5 MPa (3,550 PSI) |
| Flow Rate | 98 L/min @ 2200 rpm |
| Replaces | Komatsu 7081U00280, 708-1U-00280 |
Why Choose This Over Generic Pumps?
• Grading-Specific Calibration: Pressure curves optimized for moldboard lift/circle rotation
• Anti-Pulsation Design: Minimizes vibration for sensor-sensitive control systems
• Hardened Components: Tungsten-carbide coated swashplate resists scoring
• Built-in Pressure Relief: Protects against shock loads during blade strikes
Keywords Integrated:
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Don’t Compromise on Grading Accuracy!
⚠️ Worn pumps cause blade drift and costly rework.
Our Komatsu-certified 708-1U-00280 replacement ships same-day with 24-month warranty. Includes installation torque specs.
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