423-0097 Hydraulic Pump for Caterpillar CAT305.5E excavator

product parameters

Part No：423-0097
Type：Variable Displacement Axial Piston Hydraulic Main Pump (A10VO60)
Applicable Equipment：CAT305.5E Mini Excavator, compatible with CAT305.5E2
Material：High strength alloy cast iron housing, alloy steel piston & slipper assembly
Surface Treatment：Anti-rust coating, internal cavity flushing & cleaning
Control Mode：Load sensing variable control
Feature：High volumetric efficiency, low internal leakage, stable pressure output, low noise, strong anti-shock capacity
Working Temperature：-20℃ ~ +110℃
Max working pressure：31MPa
Displacement：Variable displacement
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

• Precision ground internal friction pairs. Pistons, slippers and valve plate are processed to tight tolerance. It achieves higher volumetric efficiency and lower internal leakage. Fast response to load change, automatically adjusting flow to match digging, lifting and travel demand.
• Strong adaptability to harsh construction environments. Outer surface is coated with anti-rust protective layer. It can resist dust, mud, temperature fluctuation and continuous vibration on job sites, reducing risks of abrasion, cavitation and premature wear during long service cycles.
• Strict multi-stage inspection before shipment. Each pump is tested on hydraulic bench to check pressure, flow rate and external leakage. Spline dimension and assembly quality are fully verified. Batch consistency is guaranteed, and non-conforming products are eliminated before packing.
• Protect the whole hydraulic circuit. Stable pressure & flow output ensures smooth operation of boom, arm and bucket. Prevent system pressure surge, protect hydraulic cylinder, control valve and pipeline, cutting down secondary damage of hydraulic related parts.
• Direct replacement with good cost performance. All mounting dimensions, port layout and spline specs fully match OE specs. No cutting, drilling or modification needed during installation. Fast field replacement. A trusted aftermarket spare part for overhaul and routine maintenance, balancing quality and procurement cost.

FAQ 

Q1: Which machine does 423-0097 hydraulic pump fit? Can it replace other part numbers?
A1: It is specially designed for CAT305.5E mini excavator and compatible with CAT305.5E2. Not universal for other CAT models. Mismatched pumps may cause insufficient digging power, slow movement, pressure loss, abnormal noise and damage to valves or cylinders. Please carefully verify machine model and OEM part number before purchase.

Q2: What tests are performed before shipment?
A2: Every hydraulic pump is 100% inspected on hydraulic test bench. Tests include pressure test, flow measurement, internal & external leakage inspection and dimensional verification. Simulated load assessment to guarantee stable performance after installation.

Q3: What is your warranty, and what is excluded?
A3: 12-month warranty under correct installation, clean hydraulic oil and normal operation. Warranty excludes damage from contaminated oil, cavitation, wrong piping, overpressure, oil shortage and improper maintenance.

Q4: Is special adjustment required after installation?
A4: Precisely manufactured according to OE dimensions, direct installation normally. After fitting, bleed air from hydraulic circuit, set pressure according to service manual. If machine power is weak or pressure unstable, check system setting and oil cleanliness.

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