Restore factory-grade hydraulic performance to your Komatsu bulldozer with this precision-engineered Hydraulic Main Pump GP (708-1T-00472). Manufactured to original Komatsu specifications, this aftermarket solution delivers identical pressure curves and flow rates for demanding earthmoving operations.
✅ Detailed Machine Compatibility
Fits Komatsu Models:
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D155A-1 (S/N: 50001-59999)
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D155A-2 (S/N: 60001-79999)
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D155A-3 (S/N: 80001-A29999)
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All blade configurations: U-blade, S-blade, PAT blade
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Winch and ripper-equipped variants
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Models with closed-center hydraulic systems
⚙️ Technical Specifications
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Pump Type: Axial piston variable displacement
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Flow Capacity: 185 L/min @ 2,000 RPM (48.9 GPM)
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Operating Pressure: 3,335 PSI (230 bar)
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Displacement: 100 cm³/rev
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Fluid Compatibility: Komatsu HHF-1/2, ISO VG 46
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Port Configuration: 1″ SAE J1926 ORFS fittings
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Weight: 28.5 kg (62.8 lbs)
🔧 Performance Advantages
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Precision-Matched Curves: ±3% deviation from OEM specs
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Thermal Management: Operates -30°C to 120°C (-22°F to 248°F)
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Anti-Wear Design: Hardened steel swashplate & valve plate
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Zero-Leak Seals: Quad-lip shaft seal (FKM/Viton®)
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Vibration Damping: Precision-balanced piston group
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Plug-and-Play Installation: No hydraulic system flushing required
⚠️ Critical Failure Indicators
Immediate replacement recommended when observing:
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Slow blade response (>4-second cycle time)
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Hydraulic whining during ripping operations
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Oil temperature exceeding 95°C (203°F)
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Pressure drop >20% at standard RPM
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Metal particles in hydraulic filter (ISO 18/15)
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Error codes: KOMTRAX Alert 325-3