Hydraulic Pump 708-7S-00730 Fan Motor Komatsu

Product Overview

708-7S-00730 hydraulic fan motor is OEM heavy-duty cooling replacement part custom manufactured for Komatsu WA380Z-6 wheel loader.

As the core power component of radiator cooling circuit for WA380Z-6 loader, this electro-proportional hydraulic fan motor automatically adjusts fan rotation speed responding to real-time coolant and hydraulic oil temperature variations. It delivers stable, sufficient heat dissipation during continuous quarry loading, aggregate stockpile handling, highway construction earthwork and long-hour heavy-duty loading cycles. Adaptive proportional speed control effectively prevents engine overheating under full-load working conditions and cuts idle fuel consumption by lowering fan speed during waiting and light-load transit.

Product Highlights

✅ Loader-Specific Proportional Speed Regulation

Built-in DC12V heavy-duty proportional solenoid enables smooth stepless fan speed adjustment dedicated to WA380Z-6 loader. Fan speed rises automatically during heavy loading for enhanced cooling, and reduces during idle waiting to lower parasitic power loss and save fuel.

✅ 100% OEM Matching Mounting Structure

Reinforced mounting flanges, thickened hydraulic port threads and precision machined shaft splines perfectly fit the factory installation cavity of WA380Z-6. No on-site cutting or pipeline rework required, greatly shortening loader downtime at construction and quarry sites.

✅ Vibration-Proof Thick Cast Iron Shell

Integrated extra-thick anti-corrosion alloy cast iron housing absorbs persistent vibration from frequent loading impact and rough site travel, avoiding shell cracks and loose internal hydraulic components after long continuous construction cycles.

✅ Multi-Layer Sand & Mud Resistant Sealing System

Stacked high-performance fluorine rubber oil seals plus oversized outer dust gaskets intercept fine construction sand, hard aggregate debris and wet mud slurry, slowing seal abrasion in quarries, road construction yards and muddy job sites.

✅ Multi-Round Strict Factory Quality Inspection

All finished units pass 22MPa 30-minute pressure leak test, precise speed calibration and continuous full-load aging test. Hidden manufacturing defects are eliminated before shipment to reduce recurring field maintenance costs.

✅ Dual Procurement Options for Different Budgets

Brand-new full standard motors meet strict maintenance standards of large construction groups; remanufactured motors fully replace all worn internal core parts, with obvious cost advantages for bulk warehouse stocking.

✅ Exclusive Single-Model Perfect Compatibility

Custom dimensional parameters realize zero-adaptation installation for WA380Z-6, eliminating mounting mismatch and leakage risks during aftermarket replacement.

✅ Dynamic Balanced Internal Rotor Assembly

Large rotating internal parts are processed by professional dynamic balancing technology to cut vibration and running noise, reliably protecting fragile radiator fins and surrounding heavy hydraulic pipelines on rough construction roads.

✅ Extend Loader Hydraulic Circuit Service Life

Stable temperature control keeps the medium-duty engine and key hydraulic assemblies within optimal temperature range, slowing aging of pump internal parts, rubber hoses and peripheral seals under round-the-clock loading workloads.

✅ Global Adaptable Logistics & Wholesale Discount

Shockproof industrial packaging fits sea freight, air cargo and international express delivery. Tiered bulk order discounts available, supported by unified 6-month global warranty excluding artificial damage and faulty installation.

Condition: Brand new

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