12VM46DF-GS-60Hz
The MaK 12VM46DF-GS-60Hz is a 12‑cylinder V‑type dual‑fuel auxiliary engine delivering up to 7.3 MW of electrical power, capable of running on LNG or HFO with IMO Tier II (diesel) and Tier III (gas) emissions compliance.
Engine Specifications
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Verify functional relief valve systems on fuel gas manifolds and exhaust; check valve set pressure calibration annually
Inspect crankshaft bearing thermoelectric voltage via Caterpillar Bearing Condition Monitoring System; examine bearing shells for lead precipitation and surface wear patterns
Measure cylinder liner wear with inside micrometer; inspect piston ring grooves for cracks; perform borescope inspection of turbocharger turbine for blade erosion or damage
Test LNG regulator pressure response and heater thermostat setpoint; inspect heat exchanger for blockages; verify glycol system circulation and temperature control
Type-general inspection and maintenance points for this equipment category — not model-specific.
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