Fitment and part numbers
Hydraulic Gear Pump - AM12 suits the AM12 1.2T Mini Excavator (KOOP KD192F / KD192FE engine). Stocked locally in Derwent Park, Tasmania.
Not sure it is the right part? Send us a photo of the part or your machine's serial plate and we will confirm the match before you order. Ask about fitment
Part details
| Our SKU | AM-PRT-AM12-GPM |
|---|---|
| System | Hydraulics & Fluid Power |
Genuine replacement hydraulic gear pump for the AM12 1.2T mini excavator (KOOP KD192FE engine). Powers all hydraulic functions: boom, arm, bucket, and travel drive systems.
Specifications
- Type: External gear pump (tandem or dual-section)
- Primary Displacement: 6–8 cc/rev
- Secondary Displacement: 3–4 cc/rev (pilot circuit)
- Max Operating Pressure: 16 MPa (160 bar)
- Flow Rating: 18–22 L/min at 2000 rpm, rated pressure
- Connection Ports: SAE flange (ISO 4401-05)
- Rotation: Clockwise (SAE standard)
- Relief Valve: Integrated or remote-mounted
Compatibility
Fits: AM12 1.2T mini excavator (KOOP KD192FE engine)
Hydraulic System: 16 MPa (160 bar) rated system
Engine Coupling: Direct SAE flange to engine crankshaft
Function
- Primary section delivers main circuit pressure for boom/arm/bucket
- Secondary section supplies low-pressure pilot circuit for control valves
- Dual-pump design ensures smooth proportional control across all functions
Installation Notes
- Flush all hydraulic lines and reservoir with clean ISO VG 46 before installation
- Prime pump with fresh hydraulic fluid before connecting engine
- Check engine-to-pump coupling alignment (critical for SAE flange connection)
- Install new shaft seal and gaskets
- Set relief valve pressure to 16 MPa (use calibrated gauge)
- Bleed air from pump housing after connection
- Run engine at half-speed for 2–3 minutes before full load
Maintenance
- Hydraulic fluid change: Every 500 operating hours
- Filter replacement: Every 250 hours
- Pressure check: Every 100 hours (should hold 16 MPa steady)
- Noise/vibration inspection: Monthly (grinding indicates wear)
Parts and filters ship Australia-wide. Freight is calculated at checkout from size and weight. Bulky items such as engines, cylinders, tracks and hydraulic motors are click-and-collect from Derwent Park at checkout; ask us for a freight quote if you cannot collect.
Free pickup from Derwent Park. We hold stock locally rather than drop-shipping from overseas, so most parts leave the same week.
How do I know this part fits my machine?
Every listing states the machine or engine it suits. If you are unsure, send us a photo of the part or your machine's serial plate and we will confirm the match before you order.
Which engine does my machine run?
The KOOP KD192F and Laidong KM385 are the engines fitted across the AM10, AM12 and AM16 machines. A photo of the serial plate is the quickest way to confirm which one you have.
Are wear parts covered by warranty?
Wear parts such as teeth, pins, bushings and cutting edges are excluded from warranty by nature, so we keep them stocked and priced to be replaced rather than nursed.
Do you stock this locally?
We hold stock in Derwent Park, Tasmania, rather than drop-shipping from overseas, so most parts leave the same week.