708-7S-00352/708-7S-00350/708-7s-00351 Fan Motor For Komatsu D61EX bulldozer

708-7S-00352/708-7S-00350/708-7s-00351 Fan Motor For Komatsu D61EX bulldozer Featured Image
  • 708-7S-00352/708-7S-00350/708-7s-00351 Fan Motor For Komatsu D61EX bulldozer

Short Description:

708-1W-41570 is a variable axial piston main hydraulic pump designed for Komatsu WA380-6 and WA430-6 wheel loaders, equipped with hydraulic power sensing and electronic proportional control.

Product Detail

Product Tags

description

This hydraulic fan motor integrates a built-in solenoid valve for real-time speed adjustment. The internal rotor and bearing assembly are manufactured with high-precision machining, ensuring smooth rotation and low vibration during continuous operation. The robust housing is cast from high-strength alloy, resisting impact and dust contamination on construction sites. The advanced sealing structure prevents hydraulic oil leakage and adapts to wide ambient temperature changes. All finished fan motors undergo strict bench testing for rotation performance, pressure resistance and sealing property before delivery. The mounting interface fully matches the original assembly, supporting direct replacement without extra modification.

product parameters

Part No：708-7S-00352 / 708-7S-00350 / 708-7S-00351
Product Type：Hydraulic Cooling Fan Motor
Applicable Equipment：Komatsu D61EX Bulldozer, also compatible with D65EX, D65PX, D85EX series
Core Technology：Variable speed hydraulic control with solenoid valve
Rated Working Pressure：21 MPa
Max Instantaneous Peak Pressure：25 MPa
Rated Speed：1800 rpm
Max Allowable Speed：2400 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-25℃ ~ +110℃
Sealing Type：Multi-composite high pressure seal
Main Material：Alloy cast housing, hardened rotor, wear-resistant bearing
Installation Method：Flange mounting
Interchangeability：708-7S-00352,708-7S-00350,708-7S-00351 are mutually interchangeable
Application：Engine cooling fan drive for bulldozer

Applicable Models

This hydraulic fan motor is aftermarket replacement spare part:
• Komatsu D61EX bulldozer
• Komatsu D65EX, D65PX, D65WX bulldozer
• Komatsu D85EX, D85PX bulldozer

Application Scenarios

This fan motor is widely used in heavy-duty bulldozer operation scenarios:
• Earthmoving site: Continuous pushing and leveling of soil and gravel.
• Quarry site: Hard rock stripping and material stacking operations.
• Mining project: Bulk material handling and site shaping under high temperature.
• Road construction project: Foundation excavation and land consolidation.
• Land reclamation project: Long-cycle all-day heavy load operation.

advantage

• Variable speed control with built-in solenoid valve, automatically adjust fan speed according to engine temperature, effectively reduce power loss and lower fuel consumption during light load.
• High precision hardened rotor and wear-resistant bearing assembly, stable rotation with low vibration, extend service life under dusty construction conditions.
• High-strength alloy cast housing, strong impact resistance, effectively protect internal components from gravel collision and external damage.
• Multi-stage composite sealing system, stable sealing performance under fluctuating pressure and temperature, greatly reduce hydraulic oil leakage risk.
• Interchangeable multiple part numbers, flexible spare parts stocking, convenient procurement and inventory management for dealers.
• Standard original flange mounting dimension, direct onsite replacement without modification, shorten machine downtime and improve construction efficiency.

FAQ 

Q1: Which machine does 708-7S-00352 fan motor fit?
A1: This hydraulic fan motor is mainly for Komatsu D61EX bulldozer, also compatible with D65EX, D65PX and D85EX series. Confirm machine serial number before purchase to avoid wrong part selection.

Q2: What signs indicate the fan motor needs replacement?
A2: Abnormal noise during fan rotation, fan speed cannot adjust with engine temperature, oil leakage from motor housing, or insufficient engine cooling leading to overheating.

Q3: Are these three part numbers mutually interchangeable?
A3: Yes, 708-7S-00352,708-7S-00350 and 708-7S-00351 are interchangeable for the same bulldozer model.

Q4: What preparations should be completed before fan motor installation?
A4: Release residual hydraulic pressure, clean the hydraulic oil circuit, check the condition of hydraulic oil and filter. After assembly, bleed air from the hydraulic circuit and test fan speed adjustment function.

Q5: What should we do if the engine still overheats after replacing the fan motor?
A5: Check the radiator blockage, hydraulic oil viscosity, solenoid valve signal, fan blade damage, or water pump failure. Overheating issue may not only come from fan motor.

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