Hydraulic Pump 708-3S-00561 Fan Motor Komatsu

Product Overview

708-3S-00561 hydraulic fan motor is OEM-grade heavy-duty cooling replacement part specially manufactured for Komatsu PC55MR-2 compact mini excavator.

As the core power component of the radiator cooling assembly for PC55MR-2, this electro-proportional hydraulic fan motor intelligently adjusts fan rotational speed in accordance with real-time variations of engine coolant and internal hydraulic oil temperatures. It delivers steady and reliable heat dissipation in diversified working scenarios including municipal narrow trenching, residential landscape construction, small foundation excavation, indoor renovation and light farmland earthmoving. Adaptive speed regulation effectively prevents engine overheating amid frequent start-stop operation cycles typical of compact excavator assignments, and optimizes fuel consumption by cutting redundant fan rotation during intermittent idle periods.

Product Highlights

✅ Model-Specific Proportional Speed Tuning

Dedicated compact DC12V proportional solenoid achieves smooth stepless fan speed matching the operating features of PC55MR-2. Fan speed rises automatically under continuous heavy digging to deliver adequate cooling output, and lowers during frequent work pauses to reduce idle power wastage and cut daily fuel expenditure.

✅ Precise OEM Mount Dimensions for Compact Engine Bay

Optimized small-size reinforced mounting flanges, finely machined hydraulic port threads and matched shaft splines perfectly adapt to the narrow installation space of PC55MR-2. No on-site metal cutting or pipeline rework is required, which greatly shortens equipment downtime at crowded urban and residential construction sites.

✅ Shock-Resistant Mini Cast Iron Casing

Thickened compact cast iron shell buffers repeated micro-shocks produced by frequent short-stroke digging, preventing casing deformation and loosening of delicate internal hydraulic components in dense daily work cycles.

✅ Multi-Environment Dust & Mud Resistant Sealing System

Layered premium fluorine rubber sealing rings paired with compact outer dust gaskets keep concrete dust, horticultural dirt and wet trench sludge away from internal structures, slowing seal abrasion in landscaping projects, municipal trench tasks and muddy suburban construction plots.

✅ Multi-Stage Pre-Shipping Quality Screening

All finished units pass 22MPa 30-minute pressure retention leak inspection, precision linear speed calibration and 2.5-hour continuous full-load aging testing. Hidden manufacturing defects get eliminated in advance to decrease frequent follow-up maintenance work on construction sites.

✅ Two Practical Procurement Choices

Brand-new factory-standard products satisfy strict official dealership maintenance criteria; remanufactured versions fully renew worn internal hydraulic cores, bringing prominent cost advantages for wholesalers stocking bulk mini excavator spare inventory.

✅ Simplify Independent Inventory Planning

This exclusive spare part is tailor-made for PC55MR-2, you can make targeted stock arrangements without preparing extra compatible SKUs, reducing redundant inventory capital occupation.

✅ Dynamically Balanced Mini Internal Rotor

Downsized rotating internal parts receive professional dynamic balancing treatment to suppress vibration and operational noise, delivering solid protection for fragile compact radiator fins within cramped engine compartments.

✅ Extend Compact Hydraulic Circuit Lifespan

Stable temperature control keeps the small-displacement engine and matched hydraulic fittings within ideal working temperature ranges, slowing ageing of miniature pump internals, slim rubber hoses and peripheral seals amid frequent startup-shutdown work rhythms.

✅ Convenient Global Shipping Adaptability

Compact overall dimensions help cut international shipping costs, shockproof industrial packaging performs reliably during sea freight, air transportation and parcel delivery. Tiered bulk purchase discounts are available, backed by unified 6-month global warranty excluding human damage and improper mounting.

Condition: Brand new

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