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HP5V76 (A10V076-14T) Hydraulic Main Pump for Liugong LG906 — Q&A Introduction
Q: What is this product?
A: HP5V76 (also marked A10V076-14T) is a swash-plate type axial piston variable displacement hydraulic main pump (open circuit), designed and manufactured by Hengli Hydraulics (China). It is a high-performance replacement/main pump assembly specifically for Liugong CLG906C / 906D / 906E 6-ton mini-excavators.
- Type: Variable axial piston pump (single pump) + integrated pilot gear pump
- Industry equivalent: Often cross-referenced to Rexroth A10V076 series
- Function: Supplies high-pressure oil for boom, arm, bucket, travel, swing, and breaker operations
Q: Core model & specifications?
| Item | Details |
|---|---|
| Model | HP5V76 / A10V076-14T |
| Structure | Variable piston pump + fixed gear pump (pilot) |
| Displacement | 76 cc/rev |
| Rated pressure | 32 MPa (320 bar) |
| Max pressure | 35 MPa (350 bar) |
| Input shaft | 14T spline (14 teeth) |
| Speed range | 2000–3000 rpm |
| Mounting | SAE B 2-hole flange (standard for Liugong 906) |
| Control | Load-sensitive /constant power (液控，non-solenoid for LG906) |
Q: Key technical features?
A:
- High-pressure & durable:
- Continuous 32 MPa, peak 35 MPa
- Hardened cylinder block, valve plate, slipper, piston — wear-resistant, long service life
- Compact & high power density:
- Lightweight (≈25% lighter than older designs)
- High power-to-weight ratio, fits small excavator engine bay
- Excellent self-priming & low noise:
- Strong suction capability; low pressure pulsation, quiet running
- Precise variable control:
- Swash-plate adjusts automatically to load — constant power control
- Prevents engine stalling; matches flow to demand (energy efficient)
- Direct fit for Liugong:
- 14-tooth spline shaft, 2-bolt SAE mounting — direct replacement for original pump on CLG906
- Integrated gear pump for pilot control (matches LG906 hydraulic system)
Q: Which machines does it fit?
A:
- Primary: Liugong CLG906C / 906D / 906E / 9055E (6-ton mini-excavator)
- Alternative fits:
- Sany SY55 / SY60
- Sunward SWE60 / SWE70
- Shantui SE60
- Other 5–7 ton mini-excavators with 14T shaft, 2-hole mounting, 76 cc pump
Q: Quality & warranty?
A:
- Brand: Original Hengli HP5V series (OEM-quality for Chinese excavators)
- Testing: 100% factory tested for pressure, flow, leakage, noise
- Warranty: 6–12 months (new pump)
- Advantage: Lower cost than imported Rexroth A10V076; same performance; perfect fit for Liugong
Q: Can it replace other pumps?
A:
- Direct replacement: For original Liugong 906 pump / Rexroth A10V076-14T
- Not interchangeable with:
- Smaller pumps (e.g., PSVD2-17E/21E: 17–21 cc) — too low flow
- Larger pumps (e.g., K3V63/112) — too big, overpowers engine
- Solenoid-type pumps (unless machine has solenoid controls)
