Hydraulic Pump 708-3S-00130 Fan Motor Komatsu

Product Overview

708-3S-00130 hydraulic fan motor is OEM-certified heavy-duty cooling replacement part tailor-made for Komatsu PC40MR-1, PC45MR-1 and PC45MRX-1 compact mini excavators.

Serving as the core power component of radiator cooling assemblies for these three compact excavator variants, this electro-proportional hydraulic fan motor intelligently modulates fan rotational speed according to real-time fluctuations of engine coolant and internal hydraulic oil temperatures. It delivers steady heat dissipation across diverse light construction assignments, including municipal narrow trench digging, residential landscape upgrading, small foundation excavation, confined indoor renovation and scattered rural farmland earthworks. Adaptive speed control effectively prevents engine thermal overload amid frequent start-stop operation cycles, and optimizes fuel consumption by lowering unnecessary fan rotation during the intermittent idle breaks common at small construction sites.

Product Highlights

✅ Triple-Model Customized Proportional Speed Regulation

Compact built-in DC12V proportional solenoid delivers smooth stepless speed adjustment matching the operating features of PC40MR-1, PC45MR-1 and PC45MRX-1. Fan speed automatically rises during continuous digging work for adequate heat dissipation, and reduces during frequent work pauses to cut idle power loss and routine fuel expenses.

✅ Space-Friendly OEM Mount Layout for Narrow Engine Bays

Downsized reinforced mounting flanges, finely threaded hydraulic ports and precision splined shafts perfectly adapt to the constrained installation space of the three excavator models. No on-site frame cutting or pipeline modification is required in replacement procedures, greatly shortening downtime at crowded urban streets and residential construction zones.

✅ Shock-Resistant Mini Cast Iron Casing

Thickened compact cast iron housing absorbs subtle recurring vibration brought by frequent light digging impacts and bumpy narrow-path travels, avoiding casing cracks and loosening of delicate internal hydraulic components throughout dense daily operation cycles.

✅ Multi-Working-Site Dust and Mud Resistant Seal Structure

Stacked premium fluorine rubber oil seals paired with compact outer dust gaskets block concrete dust, loose gardening dirt and sticky trench muck, slowing seal abrasion in courtyard landscaping works, narrow municipal trenches and damp rural construction plots.

✅ Multi-Step Factory Quality Control Workflow

All finished products pass a 22MPa 30-minute pressure retention leak test, accurate linear speed calibration and 2.5 hours of continuous full-load aging screening. Hidden manufacturing defects get removed before delivery to reduce repeated field maintenance demands.

✅ Dual Practical Procurement Options

Factory-new units satisfy strict official maintenance criteria for authorized Komatsu service centers; remanufactured versions comprehensively replace all worn internal hydraulic core parts, bringing evident cost advantages for wholesalers stocking bulk compact excavator spare inventory.

✅ Cut Down Warehouse SKU Burden

A single spare fits three mainstream compact Komatsu excavator models, simplifying stock categorization and lowering capital locked into scattered small spare inventories.

✅ Precision Dynamic Balancing for Internal Mini Rotors

Scaled-down rotating internal assemblies receive professional dynamic balancing treatment to mitigate vibration and operational noise, safeguarding fragile compact radiator fins inside narrow engine compartments.

✅ Prolong Compact Hydraulic Circuit Lifespan

Stable thermal stabilization keeps small-displacement engines and matched hydraulic modules within optimal temperature bands, decelerating ageing of tiny pump internals, slim rubber hoses and peripheral seals under frequent start-stop work rhythms.

✅ Optimized Cross-Border Shipping Performance

Compact overall dimensions decrease international freight expenditure, shock-absorbing industrial packaging performs reliably across sea freight, air shipment and parcel express delivery. Tiered bulk purchase discounts are available, backed by standard 6-month global warranty excluding man-made damage and faulty installation.

Condition: Brand new

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