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What are the key performance advantages of this regulator?
- Precise Matching to EC210B & K3V112: 1:1 dimensional and functional matching with Volvo EC210B’s original regulator (Part No. 14525814) and Kawasaki K3V112 hydraulic pump, ensuring seamless replacement without system modifications.
- High Load Adaptability: Optimized 9N24 configuration adapts to the dynamic load changes of excavators (e.g., heavy digging vs. light traveling), maintaining stable pump output pressure/flow and reducing hydraulic shock.
- Durable & Reliable: Anodized aluminum alloy body resists vibration (up to 15 g) and corrosion in dusty/wet construction environments; Viton seals ensure leak-proof operation for ≥ 6,000 operating hours.
- Fast Response & Energy Saving: Rapid response time (≤80 ms) ensures timely adjustment to load demands, reducing fuel consumption by 8-12% compared to faulty or mismatched regulators.
- Easy Calibration: Built-in pressure adjustment screws allow on-site calibration of pilot pressure and flow limit, simplifying maintenance without specialized tools.
What is the role of this regulator in the EC210B excavator’s hydraulic system?
The regulator is a critical control component of the EC210B’s K3V112 hydraulic pump, responsible for:
- Controlling the pump’s swashplate angle to adjust displacement (output flow) based on pilot signals from the excavator’s main control valve.
- Limiting the maximum output pressure of the pump to protect the hydraulic system (pipes, cylinders, valves) from overpressure damage.
- Matching the pump’s output to the excavator’s operational needs (e.g., increasing flow for fast traveling, adjusting pressure for heavy digging) to optimize overall performance.
- Reducing idle load loss by minimizing pump output when the excavator is in standby mode.
What are the installation requirements for this regulator?
- Compatibility Check: Confirm the excavator model is EC210B and the hydraulic pump is Kawasaki K3V112 (verify pump interface matches the regulator’s flange holes).
- Cleanliness Assurance: Thoroughly clean the regulator mounting surface, pilot signal ports, and hydraulic lines to avoid contaminant-induced jamming or wear.
- Torque Specification: Tighten the mounting bolts to 25 – 30 N·m (18.4 – 22.1 ft-lbs) using a torque wrench; over-tightening may deform the flange or damage the pump body.
- Calibration Steps:
- After installation, connect a hydraulic pressure gauge to the pilot signal port.
- Adjust the pressure screw to set the pilot pressure to 1.5 bar (21.8 psi) (default value for EC210B’s standard operation).
- Test the excavator’s key actions (digging, swinging, traveling) to ensure smooth pressure/flow adjustment.
- Leak Test: Start the excavator and run the hydraulic system at idle speed; check for oil leaks around the regulator body, mounting bolts, and pilot signal connections.
