14644494/14666085 fan pump For Volvo EC480E excavator

product parameters

Part No：14644494 / 14666085
Type：Variable Displacement Piston Fan Pump
Applicable Equipment：Volvo EC480E excavator, two part numbers interchangeable, matched with corresponding fan motor
Material：Cast iron housing, alloy steel piston, bronze valve plate, heavy-duty roller bearing
Surface Treatment：Anti-rust coating, ultrasonic deep cavity cleaning, thoroughly remove casting sand, metal scraps and burrs inside flow channel
Control Mode：Proportional solenoid control, output flow varies with temperature signal
Feature：Variable piston structure, proportional flow regulation, stable pressure output, fast response, low internal leakage, good contamination resistance, interchangeable OEM numbers, specially designed fan pump for Volvo EC480E excavator independent cooling system
Working Temperature：-20℃ ~ +115℃
Rated Rotation Speed：1650 rpm, Max allowable speed:2400 rpm
Package：Independent anti-rust packing + Standard export carton
Storage suggestion：Keep dry, avoid moisture, rust and collision, indoor constant temperature storage, stay away from corrosive gas

• **Dual interchangeable part numbers, custom fit for Volvo EC480E with proportional flow control**
14644494 / 14666085 variable piston fan pump perfectly fits Volvo EC480E excavator, two OEM numbers interchangeable. It works seamlessly with supporting fan motor. The output flow automatically adjusts according to engine temperature signal to match heat load, effectively solving overheating under heavy-duty working conditions.
• **Good anti-pollution & anti-cavitation performance**
Optimized suction and discharge flow path reduces oil turbulence and cavitation risk. Tolerates slightly contaminated hydraulic oil on site. Effectively prevents particle jamming, abnormal noise and premature component wear, ensuring continuous stable operation and less downtime.
• **100% bench tested, high interchangeability**
Each replacement pump passes flow, pressure and leakage test on hydraulic test bench. All installation dimensions, port positions and spline shaft size fully consistent with OEM specs. Direct plug-and-play replacement, no modification required, shorten machine downtime and reduce maintenance cost.
• **Precise cooling regulation to protect whole machine**
Proportional control realizes intelligent cooling adjustment. It keeps engine and hydraulic components operating within safe temperature range, preventing thermal damage to radiator and engine caused by overheating. It is the premium replacement part for Volvo EC480E overhaul and daily maintenance.

FAQ 

Q1: What machine does this 14644494/14666085 fan pump fit? Is it universal?
A1: Part 14644494 /14666085 fan pump is engineered for Volvo EC480E excavator. These two part numbers are interchangeable. It belongs to the independent cooling hydraulic system and is not universal for other excavator models. It has to work with the matching fan motor. Wrong part selection will lead to low fan speed and machine overheating.

Q2: What inspections are carried out before shipment?
A2: Every fan pump is fully tested on hydraulic test bench before delivery, including flow test, pressure curve test, high & low pressure sealing test and internal leakage inspection. Strict quality control ensures stable field performance. Test reports can be supplied upon request.

Q3: How to prolong the service life of the fan pump?
A3: Fully flush the hydraulic pipeline and replace new hydraulic filters before installation to remove dirt and debris. Inspect spline shaft, sealing rings and mounting bracket for wear. Complete no-load test run after installation, check noise, pressure and temperature rise, then put into heavy-duty operation only after confirmation.

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