708-1S-00460 Fan Pump For Komatsu D65EX bulldozer

Short Description:

708-1S-00390 is OEM-grade piston fan pump for Komatsu D375A-6, D375A-6R large bulldozer. It acts as the hydraulic power source of the cooling system, delivering pressurized oil to drive the fan motor.

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Product Detail

Product Tags

description

product parameters

Part No：708-1S-00460
Product Type：Temperature-Sensing Variable Piston Hydraulic Fan Pump
Applicable Equipment：Komatsu D65EX-16, D65PX-16, D65EX-18 Medium Bulldozer
Core Technology：Intelligent temperature linkage variable control, automatic flow matching with thermal load
Theoretical Displacement：42 cc/rev (calibrated for D65 medium dozer heat dissipation requirement)
Rated Working Pressure：23 MPa (230 bar) (long-term stable operating pressure)
Max Instantaneous Peak Pressure：27 MPa (270 bar) (resist instantaneous impact pressure)
Rated Working Speed：2100 rpm (economic stable working speed)
Max Allowable Speed：2600 rpm (limit no-load operating speed)
Rated Output Flow：105 L/min (standard rated heat dissipation flow)
Minimum Standby Flow：24 L/min (low flow energy-saving standby design)
Working Medium：ISO VG46 Anti-wear Hydraulic Oil (special oil for construction machinery)
Working Temperature Range：-22℃ ~ +110℃ (adapt to cold and high-temperature field construction environment)
Sealing Grade：Industrial high-pressure zero visible leakage standard
Main Material：Reinforced thick cast iron housing, carburized hardened alloy movement pair, multi-stage FKM composite seal

advantage

• 42cc variable piston structure with intelligent temperature-sensing linkage control, accurately matching heat generation of D65 medium bulldozer under continuous pushing operation, balancing heat dissipation efficiency and power consumption, reducing fuel loss.
• Heavy-duty reinforced cast iron pump body with high structural rigidity and impact resistance, withstand alternating vibration and load in earthmoving and slope pushing construction, preventing shell deformation and oil leakage.
• Carburized hardened alloy movement pair greatly improves surface hardness and wear resistance, works stably in dusty construction environment with slightly contaminated hydraulic oil, pressure and flow output remains stable for long continuous operation.
• Upgraded multi-stage FKM composite sealing system breaks temperature limit of ordinary seals, runs stably under long-term accumulated high temperature, effectively eliminates internal hydraulic leakage and shaft oil seepage, cuts daily maintenance cost.
• Precision temperature variable control realizes fast flow response, fan speed matches engine heat load in real time, avoids insufficient heat dissipation under heavy load and power waste under light load.
• Verified by full-condition hydraulic bench tests including temperature cycle and pressure impact, strong environmental adaptability, fully meets long-time medium-load earthwork construction of D65 bulldozers.

FAQ

Q1: Which equipment does 708-1S-00460 fan pump fit?
A1: This hydraulic fan pump is specially applicable to Komatsu D65EX-16, D65PX-16 and D65EX-18 medium bulldozers. It is recommended to confirm the equipment serial number before purchasing to ensure accurate matching.

Q2: What is the core function of this fan pump?
A2: It is the exclusive hydraulic power source of D65 bulldozer cooling system. It converts engine mechanical energy into hydraulic energy to provide stable pressure oil for the fan motor. Through temperature-sensing variable control, it dynamically adjusts flow and fan speed to precisely control engine coolant and hydraulic oil temperature, preventing overheating and power drop during continuous heavy pushing operation.

Q3: What are the typical failure symptoms of aging or worn fan pump?
A3: Common faults include insufficient pump flow leading to low fan speed and continuous high engine temperature; unstable flow causing fan jitter and abnormal vibration; internal wear leading to pressure attenuation and weak heat dissipation; internal hydraulic leakage reducing working efficiency; shaft seal aging and oil seepage; slow flow response under high-temperature load.

Q4: What inspections need to be completed before installing a new fan pump?
A4: First, inspect and replace deteriorated, contaminated hydraulic oil and filter elements to ensure oil cleanliness. Second, check cooling system pipelines, relief valves and temperature control valves for blockage, damage or stuck spools. Thoroughly flush the hydraulic tank and pipelines to remove metal debris and impurities, and complete full air bleeding after installation to avoid air resistance.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.