Hydraulic Pump 708-3s-00332 Fan Motor Komatsu

Product Overview

708-3S-00332 hydraulic fan motor is OEM-grade heavy-duty cooling replacement part tailor-made for Komatsu PC30-8, PC35MR-1 and PC35MRX compact mini excavators.

As the core power unit of radiator cooling loops for these three popular compact excavator variants, this electro-proportional hydraulic fan motor intelligently adjusts fan rotational speed according to real-time variations of engine coolant and internal hydraulic oil temperatures. It delivers steady heat dissipation for diversified small-scale construction assignments, including narrow municipal trenching, residential landscape renovation, confined indoor demolition, small farmland excavation and compact foundation works. Adaptive speed regulation effectively prevents engine thermal overload amid frequent start-stop work cycles, and optimizes fuel economy by cutting redundant fan rotation during idle breaks that commonly occur at small job sites.

Product Highlights

✅ Triple-Model Matched Proportional Speed System

Compact built-in DC12V proportional solenoid delivers smooth stepless speed tuning adapted to the operating features of PC30-8, PC35MR-1 and PC35MRX. Fan speed rises automatically during sustained digging for adequate cooling output, and lowers amid frequent work pauses to reduce idle engine power consumption and cut long-term fuel expenses.

✅ High-Precision OEM Mount Design for Cramped Engine Compartments

Downsized reinforced mounting flanges, finely machined hydraulic port threads and matched shaft splines perfectly suit the narrow installation space of the three excavator models. No on-site metal cutting or pipeline rework is needed during replacement, greatly shortening downtime in crowded urban streets and residential work zones.

✅ Compact Anti-Vibration Cast Iron Housing

Thickened mini cast iron casing absorbs repeated micro-shocks generated by short-stroke digging motions and uneven-site travels, preventing shell deformation and loosening of delicate internal hydraulic components throughout intensive daily operation cycles.

✅ Multi-Working-Scenario Dust & Mud Resistant Sealing

Layered premium fluorine rubber sealing rings together with mini outer dust gaskets block concrete powder, horticultural soil and damp trench sludge, slowing seal abrasion in municipal trench projects, courtyard landscaping works and muddy rural construction plots.

✅ Multi-Stage Pre-Shipping Quality Screening

All finished units undergo 22MPa 30-minute pressure retention leak inspection, precision linear speed calibration and a 2.5-hour continuous full-load aging test. Hidden manufacturing flaws are eliminated beforehand to decrease frequent subsequent on-site maintenance.

✅ Dual Budget-Oriented Procurement Solutions

Brand-new factory-standard units satisfy strict official dealership maintenance criteria; remanufactured products thoroughly refresh worn internal hydraulic cores, bringing obvious cost advantages for wholesalers maintaining bulk mini excavator spare inventories.

✅ Optimize Stock Management Efficiency

One single spare is compatible with three mainstream Komatsu mini excavator models, cutting down the number of required SKUs, simplifying warehouse sorting and lowering capital locked in scattered spare stocks.

✅ Dynamically Balanced Mini Internal Rotor

Scaled-down rotating internal components go through professional dynamic balancing treatment to suppress vibration and operational noise, offering steady protection for fragile compact radiator fins inside narrow engine bays.

✅ Extend Service Life of Compact Hydraulic Circuits

Stable thermal regulation keeps small-displacement engines and matched hydraulic fittings within ideal working temperature ranges, slowing ageing of miniature pump internals, slim rubber hoses and peripheral seals under frequent startup-shutdown operation patterns.

✅ Adaptable Global Logistics Performance

Small overall dimensions reduce international freight expenditure, shockproof industrial packaging performs reliably in sea freight, air shipment and ordinary parcel delivery. Tiered bulk discounts are available, backed by unified 6-month global warranty excluding man-made damage and incorrect installation.

Condition: Brand new

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