1.0 Hydraulic Pump

1.0 Hydraulic Pump

Genuine replacement hydraulic gear pump for the AM10 1.0T mini excavator (KOOP KD192F engine). Supplies pressurized hydraulic fluid to all excavator control circuits: boom, arm, bucket, and travel drive.

Specifications

• Type: External spur gear pump (tandem or dual-displacement)
• Primary Displacement: 6–7 cc/rev
• Secondary Displacement: 2–3 cc/rev (pilot circuit)
• Max Operating Pressure: 16 MPa (160 bar)
• Flow Rating: 16–18 L/min at 2000 rpm, rated pressure
• Connection Ports: SAE flange (ISO 4401-05)
• Rotation: Clockwise (SAE standard)
• Relief Valve: Integrated or remote

Compatibility

Fits: AM10 1.0T mini excavator (KOOP KD192F single-cylinder engine)

Engine Coupling: SAE flange direct to engine crankshaft

System Pressure: 16 MPa (160 bar) rated

Function

• Primary circuit: Powers boom, arm, bucket hydraulic cylinders
• Secondary circuit: Low-pressure pilot supply for proportional control valves
• Gear design: Smooth, quiet operation with minimal pulsation

Installation Notes

• Flush hydraulic reservoir and all lines with clean ISO VG 46 before installation
• Prime pump with fresh hydraulic fluid (prevents cavitation)
• Inspect SAE flange coupling for proper alignment
• Install new input shaft seal and output gaskets
• Adjust system relief valve to exactly 16 MPa (use calibrated pressure gauge)
• Bleed air from pump casing after connecting engine
• Run engine at idle only for first 2–3 minutes (allow pressure to stabilize)
• Full load test after warm-up (listen for grinding, check pressure steady)

Maintenance Schedule

• Hydraulic Fluid: Change every 500 operating hours or 6 months
• Fluid Filter: Replace every 250 hours (before intervals when working in dust)
• Pressure Check: Verify 16 MPa under load at every 100-hour service
• Noise Inspection: Listen for grinding/cavitation (indicates wear or air in system)
• Seal Inspection: Check shaft seal monthly for slow oil weeping