KOMATSU

Fan Motor 708-7S-00550 for Komatsu Loader

Model 708-7S-00550 hydraulic fan motor is a core cooling spare part for Komatsu WA6 series wheel loaders, compatible with WA380-6, WA430-6, WA450-6, WA470-6, WA480-6. It drives the radiator fan with variable hydraulic speed to stabilize engine temperature and prevent overheat breakdowns. Manufactured with heavy-duty cast iron housing and leak-proof seals, it matches OEM dimensions for direct plug-and-play replacement. Every unit passes strict pressure and aging tests for reliable performance under heavy construction working conditions.

CHINA

◆BRAND NAME  

HYH

◆MODEL NUMBER

708-7S-00550

◆MINIMUM ORDER QUANTITY

1SET

◆PACKAGING DETAILS        

PAPER AND WOODEN PACKING

◆DELIVERY TIME   

1-4WORKING DAYS

◆PAYMENT TERMS        

T/T, WESTERN UNION, L/C


Description

Product Overview

This remanufactured cooling fan motor Part Number 708-7S-00550 is a direct OEM replacement hydraulic component exclusively for Komatsu construction machinery. As the core part of the equipment cooling system, it drives the radiator fan with variable hydraulic speed to control heat dissipation of engine and hydraulic system, effectively solving overheating failure during heavy-load mining, road construction and earthmoving work.

All remanufactured fan motors are fully disassembled, worn internal parts replaced, shell polished and sealed renewed, then pass strict leakage, pressure resistance and continuous aging tests before delivery. It matches the original installation size perfectly, plug-and-play without modification, a cost-effective alternative to brand-new original parts.

Product Highlights

✅ Cost-Effective Remanufactured Solution

We replace all worn valve plates, bearings and oil seals with brand-new high-precision accessories, restore full performance at a much lower price than original new fan motors, greatly cutting your machinery maintenance budget.

✅ 1:1 OEM Matching Size

Consistent flange size, shaft diameter, oil port position and installation hole layout with original 708-7S-00550, no cutting, drilling or refitting required, fast on-site replacement within 30 minutes.

✅ Stable Variable Speed Heat Dissipation

Hydraulic variable speed design automatically adjusts fan RPM based on equipment working load, balances cooling efficiency and fuel consumption, avoids high-temperature shutdown and engine damage under long-time heavy duty.

✅ Heavy-Duty Anti-Leakage Structure

Multi-layer high-temperature resistant oil seals are installed during refurbishment, the cast iron housing is polished and anti-rust treated, effectively preventing hydraulic oil leakage in dusty, high-temperature construction sites.

✅ Strict Factory Testing

Every remanufactured fan motor undergoes 3 professional tests: hydraulic leakage test, high-pressure endurance test, 2-hour continuous running aging test to guarantee stable long-term operation.

✅ Wide Compatibility

Covers multiple sub-models of Komatsu WA6 series wheel loaders and GD675-3A motor grader, one part meets the repair demand of multiple devices, convenient for spare parts inventory management.

Applications:
Fit For Komatsu Loader: WA380-6, WA430-6, WA430-6E0, WA450-6, WA450-6-W1, WA470-6, WA470-6 LC, WA470-6A, WA470-6R, WA480-6, WA480-6 LC
Fit For Komatsu Motor Grader: GD675-3A

Condition: Brand new

Other model specifications

708-7S-00550708-7S-00352708-7S-00720708-7W-00021708-7W-00230
708-7W-00220708-7W-00140 708-1W-00882708-1W-00741708-1U-00171
709-1T-00710708-7W-00160708-7W-00130708-7S-00820708-7W-00350
708-7W-00320708-7T-00710 708-7H-00650708-7S-00671708-7S-00710
708-7R-00690708-7R-00700708-7R-00710708-7R-04160708-7R-11210
708-7W-00120708-7W-00130708-7W-00220708-7W-00330708-7W-11520
708-7W-00160708-7W-00021419-03-33242708-7S-00550708-7S-00610
708-7S-00710708-7S-00740708-7S-01330708-7S-00352708-7H-00650
708-7H-00680708-7H-11410708-7S-00350708-7S-00351708-7S-00352
708-7W-00140708-8F-00111708-8F-00171708-8F-00192708-8F-00211
708-8F-00250708-8F-33310708-7S-00420708-7S-00430708-7W-00410

708-7W-0042

708-8F-33310708-8F-33320708-8F-33330708-8F-33340
708-8F-33350




Technical Specifications:

Item

Specification

Part Number

708-7S-00550 / 7087S00550

Product Type

Electro-proportional variable hydraulic fan motor

Displacement

Max 45cc/rev (variable)

Rated Working Pressure

180 Bar (18MPa)

Peak Pressure

245 Bar (24.5MPa)

Control Voltage

DC 12V (built-in solenoid valve)

Max Fan Speed

2800 RPM

Shaft Type

OEM standard spline threaded shaft

Mounting Method

6-hole OEM matching flange, direct replacement

Housing Material

Reinforced cast iron

Net Weight

14.8 KG

Compatible Equipment

Komatsu WA380/430/450/470/480-6 series loader & GD675-3A grader

Factory Test Standard

Pressure leakage test, full-load aging test before delivery

Specifications:

Item

Detailed Specification

Part Number

708-7S-00550 / 7087S00550

Product Name

Hydraulic Variable Speed Cooling Fan Motor

Product Type

Electro-proportional hydraulic variable piston motor

Displacement

Max 45cc/rev (stepless variable)

Rated Working Pressure

180 Bar / 18MPa

Max Peak Pressure

245 Bar / 24.5MPa

Control Mode

DC 12V built-in solenoid valve electro-hydraulic proportional control

Max Fan Rotating Speed

2800 RPM

Shaft Specification

OEM standard spline threaded shaft, perfect fan hub matching

Mounting Standard

6-hole OEM integral flange, 1:1 original size, direct plug-and-play replacement

Housing Material

High-strength reinforced cast iron, anti-rust and anti-deformation

Sealing System

Multi-layer high-temperature resistant fluorine rubber seals, zero leakage

Net Weight

14.8 KG

Working Temperature Range

-20℃ ~ +95℃ (hydraulic oil working temperature)

Compatible Models

Komatsu WA380-6, WA430-6, WA430-6E0, WA450-6, WA450-6-W1, WA470-6, WA470-6 LC/A/R, WA480-6, WA480-6 LC Wheel Loader; GD675-3A Motor Grader

Factory Inspection Standard

20MPa 30-minute pressure holding leakage test, 2-hour full-load aging operation test, 100% speed regulation performance test

Core Feature

Automatic speed adjustment with load, energy-saving and low noise, effectively prevent equipment high-temperature shutdown



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HENGYUHANG Power Technology Co., LTD

Location

No. 173, Xiacuo, Sihuang Village, Xiamei Town, Nan 'an City, Fujian Province

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+86 19918575358

WhatsApp Email +86 19918575358