14778109/14675326 fan pump For Volvo EC950E excavator

product parameters

Part No：14778109 / 14675326
Type：Variable Displacement Piston Fan Pump
Applicable Equipment：Volvo EC950E large 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
Rated Working Pressure：29 MPa
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 EC950E large 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 EC950E large excavator with proportional flow control**
14778109 / 14675326 variable piston fan pump perfectly fits Volvo EC950E large 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.
• **Stable pressure & rapid response, low internal leakage**
Precision ground piston, valve plate and swash plate assembly. Optimized clearance and sealing structure. Stable pressure output under fluctuating load. Maintains low volumetric leakage to prevent insufficient fan speed caused by inadequate hydraulic supply.
• **Heavy-duty cast iron housing, shock & vibration resistant**
Cast iron shell treated by stress relief annealing to eliminate residual internal stress. It can withstand continuous vibration, hydraulic impact and dust corrosion on job sites. Less shell deformation and slower wear of internal components for longer service life.
• **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 EC950E overhaul and daily maintenance.

FAQ 

Q1: What machine does this 14778109/14675326 fan pump fit? Is it universal?
A1: Part 14778109 /14675326 fan pump is engineered for Volvo EC950E large 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: What is the warranty term, and what is excluded from warranty coverage?
A3: We offer a 12-month warranty. The warranty covers performance defects under proper installation, clean hydraulic oil and normal operating conditions. Damage caused by contaminated hydraulic oil, particle blockage, overpressure shock, incorrect installation and human damage is not covered by warranty.

Q4: Is professional commissioning required after installation?
A4: Direct replacement without modification. After installation, bleed air from the cooling hydraulic circuit and verify pump rotation direction. If the machine still overheats, check the cleanliness of hydraulic oil and proportional solenoid signal.

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