Hydraulic Pump 708-1t-00420 Fan Motor Komatsu

Product Overview

708-1T-00420 hydraulic fan motor is OEM-grade heavy-duty cooling replacement part built for Komatsu heavy bulldozers D275A, D155AX and D275AX.As the vital power part of radiator cooling circuits for these large dozers, this electro-proportional hydraulic fan motor dynamically modulates fan rotating speed responding to real-time fluctuations of engine coolant temperature and hydraulic oil temperature. It delivers powerful and stable heat dissipation in demanding large-scale mining, bulk earthmoving and steep-slope land reclamation projects, effectively preventing severe engine overheating under round-the-clock heavy-duty shifts and cutting unnecessary fuel consumption through adaptive intelligent speed regulation.

Product Highlights

✅ Mining-Grade Adaptive Proportional Speed Adjustment

Robust DC12V proportional solenoid achieves reliable stepless fan speed tuning. Fan speed automatically rises when bulldozers undertake high-heat heavy pushing work in mines and decreases during light-duty intervals, lowering parasitic engine power draw and optimizing long-cycle fuel efficiency.

✅ Precise OEM Heavy-Duty Mounting Parameters

Heavy-spec mounting flanges, reinforced threaded oil ports and sturdy output splines fully match factory installation specs of three large bulldozer models. Field swap can be completed efficiently without machining the heavy vehicle frame, sharply cutting costly downtime at remote mining sites.

✅ Ultra-Sturdy Anti-Vibration Cast Iron Casing

Thickened monolithic cast iron structure absorbs powerful shock from rocky mine travel and deep-earth pushing tasks, avoiding shell fracture and displacement of internal precision hydraulic components under long-term harsh operation.

✅ Enhanced Multi-Layer Dust & Mud Resistant Sealing

Thick tiered fluorine rubber oil seals paired with heavy-duty outer dust gaskets intercept coarse mine dust, rock particles and thick mud, greatly slowing seal abrasion in open-pit mining and muddy earthwork settings.

✅ Stringent High-Pressure Factory Inspection Workflow

All finished units pass heavy-duty pressure holding leak tests, high-precision speed calibration and prolonged full-load aging trials, screening out unqualified products to reduce expensive on-site maintenance in isolated mining zones.

✅ Dual Feasible Procurement Options

Brand-new factory-spec assemblies meet strict maintenance standards of large mining corporations; premium remanufactured versions fully replace all worn internal heavy components to deliver remarkable cost savings for bulk bulk orders.

✅ Broad Cross-Series Bulldozer Compatibility

One spare unit is applicable for D275A, D155AX and D275AX heavy dozers, decreasing SKU quantities and streamlining warehouse inventory management for hydraulic spare part distributors.

✅ Dynamically Balanced Heavy Rotor Design

Large internal rotary parts go through strict dynamic balancing procedures to cut down strong running vibration and noise, offering steady protection for bulky radiator assemblies and thick surrounding hydraulic piping.

✅ Extend Overall Bulldozer Service Lifespan

Consistent thermal stabilization keeps large engines and main hydraulic assemblies staying within optimal temperature bands, decelerating degradation of heavy pump internals, thick rubber hoses and robust peripheral seals during continuous mining workloads.

✅ Flexible Global Bulk Shipping Solutions

Sturdy packaging adapts ocean, air and international express transportation for bulky parcels; tiered wholesale discounts are available for bulk purchases, protected by standardized six-month worldwide warranty clauses.

Condition: Brand new

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