170-9918 Fan Pump for Caterpillar 365C excavator

product parameters

Part No：170-9918
Type：Hydraulic Axial Piston Variable Fan Pump
Applicable Equipment：CAT365C Excavator / Construction Machinery Cooling System
Working Pressure：21–29MPa
Rated Pressure：26MPa
Peak Instantaneous Pressure：33MPa
Displacement：36cc/r
Rated Flow：60–80 L/min
Working Temperature：-20℃ ~ +120℃
Hydraulic Oil Viscosity Range：16~100 mm²/s
Filtration Precision Requirement：≤10μm
Feature：Variable displacement proportional control, stable output, low internal leakage, high temperature resistance, low vibration
Internal Structure：Precision nine-piston axial piston structure, high-precision valve plate pairing
Sealing Grade：High-temperature resistant fluororubber full sealing, zero leakage standard
Protection Grade：IP54 dustproof and waterproof
Material：High-strength wear-resistant alloy steel (pump housing), bearing steel (piston & shaft)
Package：Independent anti-rust packing + Standard export carton
Storage suggestion：Keep dry, avoid moisture, rust and collision, indoor constant temperature storage

• High strength forged pump housing. Made of wear-resistant alloy material, strong compression and deformation resistance. Not easy to leak oil under long-time high pressure and high temperature, guarantees stable hydraulic output.
• Precise variable proportional control. Matches original machine hydraulic control logic. Output flow changes dynamically following water temperature and hydraulic oil temperature, reduces idle power consumption and saves fuel.
• Strong adaptability to harsh working conditions. Optimized internal oil passage and sealing assembly. Adapt to high temperature, heavy load and dusty construction sites, reduce premature wear and early failure.
• Strict full inspection before shipment. Each pump is tested for torque, flow stability and static sealing. Smooth running, low noise, consistent batch performance.
• Stable hydraulic supply for cooling circuit. Fast response for flow adjustment. Solves overheating alarm and high-temperature power reduction during heavy loading operation.

FAQ 

Q1: Can this fan pump fit all CAT excavators?
A1: No. The 170-9918 fan pump is specially for CAT365C excavators. Different CAT models have different pump displacement and mounting interfaces. Please verify machine model and original part number before ordering. Wrong part will lead to insufficient cooling, engine overheating and related faults.

Q2: What tests are performed before shipment?
A2: All fan pumps are 100% fully inspected before delivery, including torque test, flow stability test, high-temperature sealing test and no-load running test. Products can only be packed after all indicators meet standards.

Q3: What preparations are needed before installation?
A3: Thoroughly clean hydraulic oil circuit to remove dirt and metal debris; replace hydraulic filter and check hydraulic oil cleanliness. Inspect fan motor and pipeline sealing. Keep installation area clean to prevent dust entering hydraulic circuit and wearing new pump.

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