Restore peak hydraulic performance to your Komatsu wheel loaders with this precision-engineered Hydraulic Main Pump GP (708-1S-00970). Manufactured to original Komatsu specifications, this aftermarket solution delivers identical flow rates and pressure control for demanding loading operations.
✅ Expanded Machine Compatibility
Fits Komatsu Models:
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WA380-5 (Serial: 50001-59999)
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WA380-6 (Serial: A70001-UP, B30001-UP)
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WA430-5 (Serial: 50001-52999)
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WA430-6 (Serial: A70001-UP, B80001-UP)
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WA380-5L | WA380-6H | WA430-5L | WA430-6H
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HST Transmission Models with Closed-Center Hydraulics
⚙️ Technical Specifications
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Pump Type: Tandem axial piston design
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Flow Rate: 98 L/min @ 2,200 RPM (25.9 GPM)
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Operating Pressure: 3,335 PSI (230 bar)
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Displacement: 55+45 cm³/rev
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Fluid Compatibility: Komatsu HHF-2, ISO VG 46
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Port Configuration: 3/4″ SAE J1926-1 ORFS
🔧 Performance Features
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Precision-Matched Curves: Within 2% of OEM pressure/flow specs
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Thermal Stability: Operates at -30°C to 110°C (-22°F to 230°F)
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Anti-Cavitation Design: Hardened chromium cylinder blocks
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Zero-Leak Seals: Triple-lip shaft seal (FKM material)
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Plug-and-Play Installation: No hydraulic recalibration
⚠️ Critical Failure Symptoms
Immediate replacement required when experiencing:
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Slow bucket/attachment response (>3-second cycle time)
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Hydraulic whining under load
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Oil temperature exceeding 90°C (194°F)
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Pressure fluctuations >15% on gauge
- Error codes: SAA7379, HCA00D7
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