Hydraulic Pump 708-3S-00512 Fan Motor Komatsu

Product Overview

708-3S-00512 hydraulic fan motor is OEM heavy-duty cooling replacement part purpose-built for Komatsu PC30MR-2 and PC35MR-2 compact micro excavators.

Serving as the core power unit of the radiator cooling loop for these two compact excavator variants, this electro-proportional hydraulic fan motor dynamically adjusts fan rotational speed following real-time shifts in engine coolant and hydraulic oil temperatures. It delivers dependable heat dissipation amid narrow municipal trenching, backyard landscaping, indoor small-scale demolition, greenhouse land preparation and tight residential construction assignments. Adaptive speed regulation prevents engine thermal overload amid frequent start-stop work cycles, while cutting superfluous fuel consumption by lowering fan rotating speed during the short idle breaks typical of micro-excavator job schedules.

Product Highlights

✅ Twin Micro Excavator Proportional Speed Adaptation

Miniature built-in DC12V proportional solenoid offers seamless stepless speed tuning matched to PC30MR-2 and PC35MR-2 operating traits. Fan output rises automatically under continuous digging for stronger cooling, and reduces during frequent work pauses to cut idle power loss and lower routine fuel expenditure.

✅ Space-Optimized OEM Mounting Layout

Downsized reinforced mounting flanges, finely threaded hydraulic ports and precision splined shafts perfectly fit the constrained engine bay installation space of the two micro excavator models. No on-site frame cutting or pipeline modification is required during swap-out, shortening downtime greatly at cramped urban and residential work locations.

✅ Compact Shock-Resistant Cast Iron Casing

Thickened mini cast iron housing absorbs recurring subtle vibration generated by light digging impacts and bumpy pathway travel, avoiding casing cracks and loosening of delicate internal hydraulic elements throughout dense daily operation cycles.

✅ Multi-Worksite Dust and Mud Resistant Seal Design

Stacked premium fluorine rubber oil seals together with enlarged external dust gaskets block rocky grit, dry mine dust and construction mud, slowing seal degradation in windy quarry zones, muddy foundation sites and unpaved mine roads.

✅ Multi-Step Factory Quality Assurance

All finished products undergo a 22MPa 30-minute pressure holding leak test, linear speed calibration and 2.5 hours of continuous full-load aging. Potential manufacturing flaws get eliminated before shipment to decrease recurring on-location maintenance work.

✅ Dual Purchase Options for Different Budget Plans

Factory-new units meet stringent official maintenance standards for authorized service centers; remanufactured versions comprehensively replace all worn internal hydraulic core components, delivering evident cost advantages for wholesale warehouse inventory.

✅ Optimize Warehouse SKU Count

One spare part covers two mainstream Komatsu micro excavator models, simplifying stock categorization and lowering capital tied up in scattered small-sized spare inventories.

✅ Precision Dynamic Rotor Balancing

Mini internal rotating assemblies receive professional dynamic balancing treatment to mitigate vibration and operational noise, safeguarding fragile compact radiator fins within confined engine compartments.

✅ Prolong Compact Hydraulic System Service Life

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

✅ Friendly Cross-Border Shipping Performance

Small overall dimensions reduce international freight expenses, while shock-absorbing industrial packaging holds up well for sea, air and parcel express transportation. Tiered bulk discounts are available, protected by standard 6-month worldwide warranty that does not cover man-made damage and incorrect installation.

Condition: Brand new

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