Hydraulic Pump 708-3S-00882 Fan Motor Komatsu

Product Overview

708-3S-00882 hydraulic fan motor is OEM-certified heavy-duty cooling replacement part custom-built for Komatsu PC35MR-2, PC40MR-2, PC40MR-2-AC, PC50MR-2 and PC50MR-2-AC compact mini excavators.

As the essential power component for radiator cooling assemblies of these five excavator variants including regular and AC editions, this electro-proportional hydraulic fan motor dynamically adjusts fan rotational speed following real-time changes of engine coolant and internal hydraulic oil temperatures. It delivers stable heat dissipation across diverse construction work scenarios, such as narrow municipal trench excavation, residential landscape renovation, small foundation digging, confined indoor refurbishment and scattered rural farmland earthmoving. Adaptive speed regulation effectively avoids engine thermal overload during frequent start-stop operation cycles, and cuts redundant fan rotation in short idle intervals to reduce overall fuel expenditure on compact construction sites.

Product Highlights

✅ Multi-Model Adaptive Proportional Speed Tuning

Compact built-in DC12V proportional solenoid delivers smooth stepless speed adjustment that matches the operating habits of ordinary and AC versions among PC35MR-2, PC40MR-2 and PC50MR-2 series. Fan speed rises automatically in heavy continuous digging for sufficient heat dissipation, and drops during frequent work pauses to minimize idle power waste and regular fuel costs.

✅ Universal OEM Mount Layout for Narrow Engine Bays

Downsized reinforced mounting flanges, finely threaded hydraulic ports and precision splined shafts perfectly adapt to the constrained engine bay space of all five applicable excavator variants. No on-site frame cutting or pipeline remodeling is required during replacement, drastically cutting downtime in densely built urban and residential construction zones.

✅ Shock-Resistant Mini Cast Iron Casing

Thickened compact cast iron housing absorbs repeated micro-vibration caused by light digging motions and bumpy narrow-path commutes, preventing casing cracks and loosening of delicate internal hydraulic components throughout intensive daily operation cycles.

✅ High-Performance Sealing Adaptable to Varied Job Sites

Stacked premium fluorine rubber oil seals alongside compact outer dust gaskets block concrete dust, garden soil particles and wet trench muck, slowing seal degradation for courtyard landscaping, narrow municipal trenches as well as damp rural construction plots.

✅ Rigorous Multi-Step Factory Quality Control

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. Potential manufacturing flaws get eliminated before delivery to lower the frequency of repeated on-site maintenance.

✅ Dual Procurement Choices Matching Diverse Budget Plans

Factory-new units satisfy official maintenance criteria of authorized Komatsu service centers; remanufactured versions fully replace worn internal hydraulic core components, bringing prominent cost advantages for wholesalers stocking large inventories of compact excavator spare parts.

✅ Greatly Simplify Warehouse SKU Planning

One single spare fits five mainstream mini excavator variants covering regular and AC editions, simplifying stock classification greatly and decreasing capital occupied by scattered small spare inventories.

✅ Precision Dynamic Balancing for Internal Rotors

Mini rotating inner assemblies receive professional dynamic balancing processing to cut vibration and running noise, offering stable protection for fragile compact radiator fins placed inside cramped engine compartments.

✅ Prolong Service Lifespan of Compact Hydraulic Loops

Stable thermal stabilization keeps small-displacement engines and matched hydraulic accessories within optimal temperature bands, slowing ageing of tiny pump internals, slim rubber hoses and peripheral seals under recurring start-stop working rhythms.

✅ Outstanding Cross-Border Shipping Suitability

Compact overall dimensions reduce international freight expenses, shock-absorbing industrial packaging remains intact in sea, air and ordinary parcel transportation. Tiered bulk purchase discounts are available, covered by standard 6-month worldwide warranty excluding man-made damage and faulty installation.

Condition: Brand new

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