KYB PSVD2-17E-23 Hydraulic Main Pump – Genuine Japanese for Yanmar 40 / 50 Excavator

Description

Detail Information

1. Key Features & Benefits

• Genuine KYB Japan hydraulic pump – Model PSVD2-17E-23. Manufactured by KYB Corporation (formerly Kayaba), a world‑renowned Japanese hydraulic specialist and OEM supplier to leading excavator manufacturers including Yanmar, Kubota, and Hitachi. This is a brand‑new, factory‑fresh unit – not remanufactured, not a generic substitute.

• Engineered specifically for Yanmar 40/50 series and 3.5–5 ton mini excavators – Designed for Yanmar VIO40‑2, VIO40‑3, VIO45‑5, VIO50‑2, VIO50‑3, VIO55‑2, VIO55‑3, and related 3.5–5 ton class machines. This pump powers the boom, arm, bucket, swing, and travel circuits with precise, responsive hydraulic flow matched to mini excavator duty cycles.

• PSVD2 series – KYB’s proven mini excavator platform – The PSVD2 series is KYB’s dedicated hydraulic pump family for 2–5 ton compact excavators. The PSVD2-17E features a swash plate type axial piston pump with a displacement of 17 cc/rev (adjustable range: 0–17 mL/rev). The pump automatically adjusts flow by changing the swash plate angle via the servo regulator, delivering efficient power exactly when needed.

• Four-in-one integrated pump assembly – The PSVD2-17E integrates two variable piston pumps (P1/P2: 17.2 cc/rev × 2) and two gear pumps (P3/P4: approx. 14.5 cc/rev + 4.5 cc/rev) into a single compact housing. This all‑in‑one design eliminates external plumbing, reduces potential leak points, and simplifies installation – critical for the tight engine compartments of mini excavators.

• High‑pressure capability for mini excavator work – Rated pressure of 24.5 MPa (≈3,553 psi) and maximum relief pressure of 26.5 MPa (≈3,843 psi). Maximum input speed of 2,500 rpm with rated flow of approximately 37.8 L/min × 2 plus auxiliary gear pump flows, delivering consistent digging force, swing torque, and attachment power in the tight spaces and variable loads that define mini excavator work.

• Electric control capability – The PSVD2-17E-23 is an electric control pump, meaning it is primarily operated and controlled through an electric system. This makes it suitable for modern hydraulic systems that require automation and advanced control functionalities, allowing for remote operation and integration with electronic control systems.

• Pressure‑compensated design – Features a pressure‑compensated design that adjusts the flow rate based on the system’s pressure demands. This prevents excessive flow and minimizes energy waste, making the pump energy‑efficient.

• Constant Pressure / Total Horsepower Control – Advanced control system ensures the pump delivers optimal performance across varying load conditions, preventing engine stall and maximizing productivity.

• Robust construction for harsh environments – Built with high‑quality materials and precision engineering to enhance durability and longevity. The housing is made from sturdy and corrosion‑resistant materials, ensuring resistance to harsh operating conditions and extending the pump’s lifespan. Internal components are meticulously machined to minimize internal leakage and maximize overall efficiency.

• Modular design for easy maintenance – Features a modular design with replaceable components, allowing for quick repairs and minimizing downtime. Routine maintenance tasks such as fluid changes and filter replacements can be easily performed, ensuring the pump operates at its best.

• Replaces multiple OEM part numbers – Compatible with and replaces OEM part numbers B0600-16023, B0600-16017, and 172458-73100 for Yanmar VIO series excavators.

• Direct bolt‑on replacement – Mounting flange and hydraulic port configurations match the original KYB PSVD2-17E-23 specifications exactly. Features a drive shaft with 13‑tooth or 15‑tooth spline matching Yanmar engine coupling. No modifications, no adapters – your mechanic unbolts the old pump and bolts this one in.

• Pre‑shipment visual verification – Before packing, we send you detailed high‑resolution photographs of the actual unit (mounting flange, splines, port threads, castings, overall condition). You approve shipment – we never ship blind.

• Fast delivery – 5–8 working days lead time from our Guangzhou warehouse. Monthly supply capacity of 300 units, available for single‑piece or bulk orders.

2. Applications

The genuine KYB PSVD2-17E-23 hydraulic main pump is the power source for Yanmar 40/50 series and 3.5–5 ton class mini excavators used across a wide range of job sites:

• Urban construction & utilities – Sidewalk repairs, water and gas line trenching, fibre‑optic cable installation, and small‑scale demolition in tight access spaces. The pump’s compact design, low noise operation, electric control capability, and precise flow control are essential for working near existing structures and utilities. The twin‑pump architecture provides “fine‑touch” flow for delicate digging near existing utilities while delivering enough power for breaking compacted surfaces.

• Residential landscaping & pool excavation – Pool digs, retaining walls, grading, and drainage work. The pump’s smooth response, quiet operation, and pressure‑compensated design minimise disturbance to nearby homes, while the high‑pressure capability (24.5 MPa continuous, 26.5 MPa peak) provides the power needed for attachments like augers and trenchers.

• Agriculture & land management – Drainage ditch cleaning, irrigation trenching, pond maintenance, and fence post holes. The pump’s rated pressure of 24.5 MPa provides the attachment power needed for rippers and post‑hole augers, while the variable displacement control and Total Horsepower Control system adapt to changing load conditions, improving efficiency and reducing fuel consumption in long‑duration agricultural work.

• Equipment rental fleet – Mini excavators are the most frequently rented machines. A genuine new pump provides predictable service life and eliminates the gamble of remanufactured or used units – avoiding costly mid‑rental failures, towing bills, and customer complaints.

• Forestry & vegetation clearance – Steep slopes, fallen timber, and uneven terrain demand reliable hydraulic performance. The integral electric control system prevents engine stall under sudden load spikes, maintaining consistent power for saws, grapples, and mulchers.

• Road & bridge maintenance – Shoulder repairs, guardrail replacement, and drainage cleaning. The pump’s responsive electric control allows operators to position attachments precisely for roadside work, even in tight work zones with limited space.

3. FAQ – Frequently Asked Questions

Q1: Is this pump an exact replacement for my Yanmar VIO40, VIO45, or VIO50?
A: Yes. The PSVD2-17E-23 is the genuine KYB hydraulic main pump for Yanmar VIO40‑2, VIO40‑3, VIO45‑5, VIO50‑2, VIO50‑3, VIO55‑2, VIO55‑3, and related 3.5–5 ton class mini excavators. It also replaces OEM part numbers B0600-16023, B0600-16017, and 172458-73100. To confirm compatibility for your specific machine variant, send us your machine serial number and a photo of the old pump nameplate – we will verify within 2 hours.

Q2: Is this a new pump or a remanufactured unit?
A: It is brand new / genuine original, not remanufactured. All internal components are new. The pump is manufactured by KYB Corporation to original specifications and meets all OEM performance standards. KYB is one of the world’s leading suppliers of hydraulic pumps for mini excavators.

Q3: What are the key specifications of this pump?
A: The PSVD2-17E-23 is a swash plate type axial piston pump with a displacement of 17 cc/rev (adjustable range: 0–17 mL/rev), a rated pressure of 24.5 MPa (≈3,553 psi), a maximum relief pressure of 26.5 MPa (≈3,843 psi), and a maximum input speed of 2,500 rpm. The pump architecture integrates 2 × variable piston pumps (17.2 cc/rev each) + 2 × gear pumps (approx. 14.5 cc/rev + 4.5 cc/rev). Total max flow is approximately 37.8 × 2 + 31.9 + 9.9 L/min (@ 2200 RPM). The pump is electric control operated and features Constant Pressure / Total Horsepower Control.

Q4: What is the warranty on this pump?
A: Warranty period is 3 to 6 months depending on product details. We do not provide warranty service for genuine original parts. Our value is delivered up front: genuine KYB Japan components, new‑condition pump, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote aftermarket alternatives – ask our sales team.

Q5: How long does delivery take?
A: Delivery is 5–8 working days after order confirmation from our Guangzhou warehouse. Express shipping (DHL/FedEx/UPS) is available for urgent orders.

Q6: What payment methods do you accept?
A: We accept L/C, T/T, XTransfer, PayPal, and Western Union.

Q7: How can I verify the pump is genuine before shipping?
A: Before packing, we send you clear, high‑resolution photographs of the actual unit – mounting flange, splines, port threads, casting marks, and overall condition. You approve shipment only after reviewing these images. We never ship blind.

Q8: What oil should I use with this pump?
A: Use a mineral oil‑based anti‑wear hydraulic fluid as recommended by KYB. Proper hydraulic fluid contamination control is essential to prevent premature wear and extend the pump’s working life. Always refer to your Yanmar operator’s manual for the correct viscosity and specification.

Q9: What are the factory pressure settings for this pump?
A: The factory pressure settings are: Main Relief (Digging): 24.5 MPa, Travel Relief: 24.5 MPa, Swing/Blade Relief (P3): 20.6 MPa, Pilot Control (P4): 3.4 – 3.9 MPa.

Q10: What drive shaft spline does this pump use?
A: The pump features a drive shaft with 13‑tooth or 15‑tooth spline matching Yanmar engine coupling. Confirm your machine’s coupling type when ordering.