Komatsu 705-41-08080 hydraulic pump for Komatsu PC38UU-3 mini excavator
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Product Overview
This OEM-grade variable axial piston hydraulic pump with part numbers 705-41-08080 and 705-41-03060 serves as the core hydraulic power source exclusively designed for Komatsu PC38UU-3 mini excavator. As the key pressure output component of the entire hydraulic system, it converts engine mechanical rotation into stable and controllable high-pressure hydraulic flow, supporting full machine functions including bucket digging, boom lifting, arm telescoping, crawler traveling and upper structure slewing. Widely used in urban narrow-space construction, residential trench excavation, garden renovation, indoor demolition and small earthwork projects, the PC38UU-3 often works with frequent start-stop actions and irregular load changes. Long-term continuous operation and contaminated hydraulic oil will gradually wear the internal cylinder block, piston shoes and valve plate, causing increased internal leakage, pressure drop and system heat accumulation. Replacing this high-precision aftermarket hydraulic pump can thoroughly restore the original working efficiency and responsiveness of the excavator hydraulic system.
Core Advantages
1. Upgraded wear-resistant internal friction pair
Key internal components such as piston assembly, cylinder block and valve plate are finely ground and heat treated. The friction pair maintains excellent stability under frequent variable-load operation, effectively reducing internal leakage, resisting cavitation and slowing down component aging, greatly extending the overall service life of the hydraulic pump.
2. Stable pressure output and sensitive variable response
Each pump is strictly calibrated and tested on professional hydraulic test bench. It provides consistent pressure output during light, medium and heavy-load working conditions, avoiding slow action, insufficient digging force and power drop caused by pump attenuation.
3. Perfect OEM interchangeability for fast repair
All mounting dimensions, shaft spline parameters, oil port positions and regulator settings fully comply with original factory standards. The pump can be directly installed and replaced, greatly saving on-site maintenance time and reducing machine downtime for repair shops and fleet owners.
4. Reinforced pump housing and anti-vibration structure
The integral cast housing effectively resists vibration and pressure impact generated during frequent mini-excavator operation. It avoids structural deformation and oil leakage problems commonly seen on low-grade replacement pumps, ensuring long-term stable operation under complex working environments.
5. Cost-effective OEM replacement solution
Comparing with expensive original pumps with long delivery cycles, this aftermarket pump provides identical OEM working performance at a more competitive price. It is the ideal long-term maintenance solution for equipment rental fleets, repair workshops and global spare parts distributors.
Manufacturing & Quality Control
Our factory specializes in the production of OEM-standard hydraulic pumps for Komatsu mini and compact excavators. We implement full-process quality control including raw material inspection, precision machining, heat treatment cleaning assembly and finished product hydraulic pressure testing. Each unit undergoes load simulation, flow detection and noise testing before packaging. All products are treated with professional anti-rust oil, wrapped with shockproof materials and packed in export-grade cartons or wooden cases to ensure safe long-distance cross-border transportation. We support bulk wholesale, customized packaging and stable long-term supply for global clients.
Frequently Asked Questions
Q1: What failure symptoms need main pump replacement?
A: If your PC38UU-3 shows weak digging power, slow compound movements, hydraulic oil overheating, obvious pump humming noise, traveling weakness and internal pressure loss, the main pump internal friction pair has worn and needs professional replacement.
Q2: Can this hydraulic pump fit other Komatsu mini excavator models?
A: This pump is specially tailored for Komatsu PC38UU-3. Different mini excavator pumps have different displacement, spline and oil circuit design. Please confirm your original part number before ordering to avoid mismatch.
Q3: What installation suggestions should be followed?
A: Thoroughly clean the hydraulic tank and pipeline, replace new hydraulic oil and filter elements. Keep the installation environment clean to avoid impurity entering the pump. Perform no-load running-in after installation before heavy-load construction.
Q4: What about after-sales quality guarantee?
A: All products pass strict factory inspection and support quality guarantee against manufacturing defects. Damage caused by improper installation, contaminated oil, cavitation and human error is not covered by warranty.