9LM20-GS-60Hz
The MaK 9LM20‑GS‑60Hz is a 9‑cylinder, 4‑stroke dual‑fuel auxiliary engine delivering up to 1 620 kW (≈1 540 kW generator output) at 900 rpm, capable of running on HFO/MDO or LNG with IMO Tier II/III 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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