KYB Original PSVD2-13E Hydraulic Pump with Three Solenoid Valves
Brand: KYB Japan | Model: PSVD2-13E Electronically Controlled Piston Main Pump (3-solenoid version) | Application: 1.8~3 Ton Mini Excavators
1. Model & OEM Part Numbers
- Complete Model: PSVD2-13E (3 Solenoid high-end version), sub-code PSVD2-13E-3
- OEM Part No.: B0600-12003 / B0600-12001 (Original equipment code for Kubota & Yanmar)
- Construction: Integrated unit of double variable displacement piston pump + built-in pilot gear pump + three-piece solenoid valve assembly mounted on pump rear cover
2. Core Hydraulic Parameters
1. Displacement: Dual piston pump 13.1cc/rev ×2; pilot gear pump integrally installed for charge oil & pilot supply
2. Rated working pressure: 24.5MPa (245bar), peak pressure 27MPa
3. Max allowable rotating speed: 2550rpm; standard engine working speed:2200~2400rpm
4. Max input torque:60N·m, matched with 30~35HP diesel engine
5. Recommended fluid: ISO VG46 anti-wear mineral hydraulic oil; operating temperature -20℃~+85℃; fluid cleanliness NAS Class 8~9
6. Control logic: LS load sensing + power displacement control + electronic flow regulation via three solenoid valves
3. Functions of Three Rear-mounted Solenoid Valves (Key difference from single-solenoid model)
All three coils: DC24V, DIN43650 connector, IP65 protection grade
1. No.1 Solenoid: Cut-off / Idle control valve
De-energized for small pump displacement at idle to reduce fuel consumption & no-load loss; energized for full pump displacement output.
2. No.2 Solenoid: Hydraulic breaker combining valve
Energize when fitting hydraulic hammer to realize double-pump confluence for large flow requirement of breaker.
3. No.3 Solenoid: Power regulating valve
Electronically controlled power adjustment: reduce pump displacement under heavy load to avoid engine stall; increase displacement under light load for faster working speed; regulated by machine ECU.
Standard PSVD2-13E only comes with one solenoid; the 3-solenoid variant is premium OEM specification with precise ECU-driven pump control.
4. Structural Features
1. Ductile iron pump housing, high-precision valve plate & swashplate variable mechanism, low noise, low internal leakage and strong durability for harsh construction environment.
2. Pilot pump integrated beside main pump, eliminating external pilot gear pump for compact layout and simplified piping.
3. Modular three-solenoid manifold; faulty single solenoid can be replaced individually without full pump disassembly.
4. Built-in LS load sensing spool automatically adjusts pump displacement following load change for energy saving.
5. Compatible Mini Excavator Models
- Kubota: KX135, KX155 (1.8~3t)
- Yanmar: VIO27, VIO30
- Domestic brands: Yuchai YC35, Sunward SWE35, Liugong LG904 and other 3-ton mini excavators
I. Product Overview
• Brand & Model: KYB Original Hydraulic Pump, Model PSVD2-13E.
• Solenoid Valve Configuration: The pump is equipped withthree solenoid valvesfor precise control of hydraulic oil flow and pressure, enabling multiple excavator functions.
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II. Technical Specifications
• Pressure Range: As a high-pressure pump, the PSVD2-13E is designed to withstand elevated working pressures (specific range referenced in KYB’s official technical documentation).
• Flow Characteristics: Delivers stable flow output to meet hydraulic demands under varying operating conditions.
• Solenoid Valve Functions: The three solenoid valves independently or simultaneously control different hydraulic circuits for excavator movements such as travel, digging, and swing.
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III. Structural Features
• Piston Pump Design: Utilizes apiston pump mechanismfor high efficiency, durability, and consistent pressure performance.
• Precision Manufacturing: Critical components (e.g., pistons, port plates) are manufactured with precision to ensure reliability and long service life.
• Integrated Solenoid Valves: The three solenoid valves are tightly integrated with the pump body, offering a compact design for easy installation and maintenance.
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IV. Applications
• Excavator Hydraulic Systems: Widely used in KYB excavators and other compatible models to provide stable, reliable hydraulic power.
• Other Construction Machinery: Adaptable to other heavy equipment requiring high-pressure hydraulic systems, depending on configuration and requirements.
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V. Maintenance & Care
• Regular Inspections: Check oil level, quality, and temperature periodically to ensure proper operating conditions.
• Hydraulic Oil Replacement: Replace hydraulic oil and clean/replace filters as recommended by KYB to maintain system cleanliness.
• Solenoid Valve Checks: Inspect solenoid valves for functionality and sealing performance; replace if damaged or leaking.
• Professional Repairs: For pump failures or performance degradation, contact a KYB-authorized service center or certified hydraulic technician for diagnostics and repairs.
