Hydraulic Pump 708-1S-00280 Fan Motor Komatsu

Product Overview

708-1S-00280 hydraulic fan motor is OEM-grade cooling replacement part specially designed for heavy-duty Komatsu bulldozer D85EX and D85PX series.

As the vital power component of bulldozer radiator cooling circuits, this electro-proportional hydraulic fan motor intelligently adjusts fan rotation speed based on real-time engine coolant temperature and hydraulic oil temperature. It delivers steady heat dissipation during heavy-duty land levelling, mine earthmoving and long uphill pushing tasks, effectively preventing thermal overheating under prolonged intensive shifts and cutting redundant fuel consumption via adaptive speed control.

Product Highlights

✅ Adaptive Proportional Variable-Speed Cooling

Built-in DC12V proportional solenoid enables stepless fan speed adjustment. Rotation speed rises automatically when the bulldozer bears heavy thermal loads in mines, and reduces under light workloads to cut engine power wastage and fuel usage.

✅ Fully OEM-Compatible Installation Dimensions

Mounting hole layout, hydraulic port threads and output splines match original factory parameters perfectly. On-site replacement can be completed quickly without drilling, welding or pipe refitting, shortening costly downtime of large dozers.

✅ Heavy-Duty Vibration-Resistant Cast Iron Shell

Thickened integrated cast iron casing absorbs intense vibration generated during heavy blade cutting and bumpy off-road mine travel, preventing shell cracks and internal component dislocation.

✅ Mine-Grade Dust & Mud Blocking Seal System

Tiered fluorine rubber oil seals paired with outer dust gaskets adapt harsh mining environments with dense rock dust and mud splashes, protecting internal precision parts and extending seal lifespan remarkably.

✅ Multi-Round Strict Factory Quality Screening

All finished products undergo pressure holding leak tests, rotating speed precision calibration and hours-long full-load aging trials, filtering defective batches to reduce subsequent maintenance expenses.

✅ Two Purchasing Choices for Different Budget Levels

Brand-new full assemblies satisfy strict maintenance standards of large mining fleets; premium remanufactured versions replace all worn internal core components, bringing cost-saving advantages for bulk procurement.

✅ Precise Adaptation for D85 Heavy Bulldozer Series

Purpose-built to fit D85EX and D85PX heavy bulldozer variants, eliminating stocking confusion and simplifying spare part inventory management for distributors.

✅ Low-Vibration Smooth Rotation Performance

Internally machined rotating components go through dynamic balancing treatment, lowering operational vibration and noise, meanwhile safeguarding fragile radiator fins and surrounding hydraulic fittings.

✅ Enhance Long-Term Reliability of Heavy Machines

Accurate temperature control keeps engine and main hydraulic assemblies within ideal temperature ranges, slowing down aging of internal pump parts, rubber hoses and peripheral seals under heavy mining workloads.

✅ Complete Global Logistics & After-Sales Arrangement

Sea shipping, air freight and international express delivery are all accessible worldwide; tiered wholesale discounts apply to bulk orders, backed by standardized six-month global warranty coverage.

Condition: Brand new

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