708-7R-00612 Fan Motor For Komatsu D41E-6 crawler bulldozer

708-7R-00612 Fan Motor For Komatsu D41E-6 crawler bulldozer Featured Image
  • 708-7R-00612 Fan Motor For Komatsu D41E-6 crawler bulldozer

Short Description:

708-1W-00151,708-1W-00152,708-1W-00153 are interchangeable variable hydraulic fan pumps for Komatsu GD555-5 motor grader.

Product Detail

Product Tags

description

This hydraulic fan motor adopts integrated compact valve assembly design, which simplifies internal flow path and reduces pressure loss during speed adjustment. Internal rotor, piston and thin-wall heavy-duty bearings are processed by precision honing, lowering running friction and noise during frequent start-stop and speed shifting cycles. The high-strength cast aluminum alloy housing features light weight while retaining enough rigidity, resisting mud splashes, fine sand and continuous vibration on narrow construction sites. It is equipped with multi-layer reinforced sealing sets that can adapt to frequent start-stop pressure fluctuations and seasonal temperature changes, effectively preventing hydraulic oil leakage at shaft end and joint surfaces. Every finished fan motor undergoes bench tests including speed regulation response, low-speed stability and leak tightness inspection before delivery. Its compact mounting footprint matches the original installation cavity perfectly for direct replacement without frame modification.

product parameters

Part No：708-7R-00612
Interchangeable Part No：N/A
Product Type：Compact Variable Hydraulic Cooling Fan Motor
Applicable Equipment：Komatsu D41E-6 / D41P-6 Medium Small Crawler Bulldozer
Core Technology：Integrated compact flow regulating valve control
Motor Displacement：14 cc/rev
Rated Working Pressure：21 MPa
Max Instantaneous Peak Pressure：25 MPa
Rated Speed：1700 rpm
Max Allowable Speed：2200 rpm
Min Idle Speed：480 rpm
Rated Output Torque：36 N・m
Speed Response Time：≤0.30s
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +105℃
Applicable Altitude：≤2800m
Sealing Type：Reinforced multi-layer composite seal
Internal Leakage Standard：≤1.2 L/min (rated pressure)
Main Material：Cast aluminum alloy housing, hardened rotor, precision thin-wall bearing
Installation Method：Compact flange mounting, short shaft connection
Application：Radiator fan drive for medium-small bulldozer engine and hydraulic cooling circuit

Applicable Models

This hydraulic fan motor is aftermarket replacement spare part:
・Komatsu D41E-6 Crawler Bulldozer
・Komatsu D41P-6 Crawler Bulldozer
Note：Verify machine serial number before order placement to avoid mismatching.

Application Scenarios

This fan motor is built for medium-small bulldozer flexible earthmoving work:
・Rural road construction: Roadbed stripping, side slope trimming and narrow path ground leveling.
・Residential land development: Lot clearing, topsoil stripping and small-site ground grading.
・Quarry auxiliary operation: Small yard tidying, waste soil stacking and access road maintenance.
・Water conservancy auxiliary project: Ditch excavation, small dike shaping under muddy ground.
・Municipal infrastructure: Temporary site cleanup and small-area backfill compaction preparation.

advantage

・Adopts integrated compact valve design to cut internal pressure loss, quickly adjust fan speed when load changes, reduce power consumption in light-load trimming work and save fuel for frequent short-cycle jobs.
・Precision honed rotor and thin-wall bearing assembly keeps stable rotation and low noise, resists fine sand and silt abrasion, adapting to frequent start-stop operations of small bulldozers.
・Lightweight cast aluminum alloy housing reduces overall load on fan bracket, while maintaining structural rigidity to withstand mud splashing and site vibration.
・Reinforced multi-layer composite seals improve anti-leakage performance at shaft end, lowering oil seepage risk under frequent speed switching and pressure cycling.
・Compact mounting structure fits limited engine compartment space of D41E-6, no need for extra bracket modification, simplifying on-site replacement work for maintenance teams.
・Strict bench inspection for low-speed performance ensures stable cooling at idle, preventing overheating during stationary trimming and short intermittent operation.

FAQ 

Q1: Which bulldozer does 708-7R-00612 fan motor fit?
A1: It is designed for Komatsu D41E-6 crawler bulldozer, also compatible with D41P-6 model. Confirm machine serial number before purchase to avoid wrong part selection.

Q2: What abnormal signs indicate the fan motor needs replacement?
A2: Fan fails to speed up when coolant temperature rises, obvious humming noise during low-speed running, shaft end oil seepage, and engine overheating in continuous land clearing work. If these symptoms gradually worsen, internal wear of fan motor is likely.

Q3: What preparations should be completed before installing the fan motor?
A3: Release residual hydraulic pressure, clean hydraulic tank and pipelines, inspect oil cleanliness and filter status. After assembly, bleed air from hydraulic circuit and test fan speed regulation under no-load condition.

Q4: The bulldozer still overheats after replacing the fan motor, what should we check?
A4: Check radiator clogging, hydraulic oil grade, regulating valve signal, fan blade deformation, water pump and engine cooling circuit. Overheating may not only come from fan motor failure, full cooling system inspection is required.

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