Hydraulic Pump 708-1L-00431 Fan Motor Komatsu

Product Overview

708-1L-00413 hydraulic fan motor is OEM-grade heavy-duty cooling replacement part precisely engineered for Komatsu PC120-6 and PC130-7 medium-sized excavators.

Serving as the core power assembly of the radiator cooling system built for these 12-to-13-ton class excavators, this electro-proportional hydraulic fan motor intelligently adjusts fan rotational speed in response to real-time variations in engine coolant and internal hydraulic oil temperatures. It delivers stable and reliable heat dissipation across a wide range of construction scenarios, including municipal roadworks, residential foundation excavation, medium-scale earthmoving projects, urban renovation demolition and suburban infrastructure construction. Adaptive speed regulation effectively prevents engine thermal overload during prolonged medium-load excavation cycles, and optimizes fuel efficiency by cutting unnecessary fan rotation during intermittent idle periods on construction sites.

Product Highlights

✅ 12-13 Ton Class Calibrated Proportional Speed System

Purpose-built DC12V proportional solenoid achieves smooth stepless speed adjustment tailored to the medium-load thermal characteristics of PC120-6 and PC130-7. Fan speed automatically ramps up during sustained excavation operations to guarantee sufficient cooling capacity, and lowers during frequent work pauses to reduce idle power wastage and long-term fuel expenditure.

✅ High-Precision OEM Mounting for Standard Engine Compartments

Heavy-duty reinforced mounting flanges, accurately machined hydraulic port threads and matched shaft splines perfectly fit the standard engine bay layout of both excavator models. No on-site metal cutting or hydraulic pipeline rework is required during replacement, significantly shortening equipment downtime for construction projects.

✅ Heavy-Duty Anti-Vibration Cast Iron Shell

Thickened high-strength alloy cast iron casing effectively dampens continuous shocks from regular digging operations, preventing housing deformation and loosening of precision internal hydraulic components even under long-duration daily shifts.

✅ High-Performance Dust & Mud Resistant Sealing Design

Multi-tier premium fluorine rubber sealing rings paired with robust outer dust barriers isolate concrete dust, site sand and damp trench sludge from internal structures, slowing seal abrasion in municipal construction, foundation excavation and muddy job site operations.

✅ Multi-Stage Industrial-Grade Pre-Delivery Quality Screening

All finished units undergo a 30-minute 24MPa pressure retention leak inspection, precision linear speed calibration and a 2.5-hour continuous full-load aging test. Hidden manufacturing defects get eliminated in advance to decrease the frequency of on-site maintenance and downtime losses.

✅ Dual Budget-Oriented Procurement Solutions

Factory-new products meet strict Komatsu official aftermarket quality standards; remanufactured units fully refurbish worn internal hydraulic core components, bringing notable cost advantages for wholesalers maintaining medium excavator spare inventories and fleet maintenance departments.

✅ Optimize Fleet Maintenance Inventory Planning

This single spare part fits two mainstream 12-13 ton excavator models, simplifying warehouse SKU management for construction companies and rental fleets operating PC120-6 and PC130-7 equipment and lowering capital locked by redundant spare stock.

✅ Dynamically Balanced Heavy-Duty Rotor Assembly

Internal rotating components receive professional high-precision dynamic balancing treatment to suppress vibration and operational noise, delivering solid protection for standard-area radiator fins inside engine compartments.

✅ Extend Whole Hydraulic System Service Lifespan

Stable thermal regulation keeps the medium-displacement engine and supporting hydraulic system within optimal temperature ranges, slowing ageing of main pump internals, high-pressure rubber hoses and peripheral seals under repeated operation cycles.

✅ Excellent Global Logistics Compatibility

Standardized packaging dimensions suit international freight requirements, shock-resistant industrial packaging maintains stable performance during sea freight, air transport and regular cargo delivery. Tiered bulk purchase discounts are available, backed by unified 6-month global warranty excluding man-made damage and incorrect mounting.

Condition: Brand new

Other model specifications

Technical Specifications:

Specifications：