MAS 850
Mitsubishi Heavy Industries Engine & Turbocharger MAS 850 — Marine Auxiliary Generator / Diesel-Electric Propulsion (ferries, tankers, cruise vessels).
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Visual inspection of engine oil level and condition (color, contamination) before and after each operation period
Check and replace fuel filters and water separators at specified intervals to prevent injector fouling
Inspect and test cooling water system including thermostat, heat exchanger, and seawater pump impeller for wear or corrosion
Verify turbocharger condition: check for oil leaks, unusual noise, and clean compressor/turbine housing as per OEM schedule
Inspect and test the alternator: check insulation resistance, bearing condition, brush wear, and AVR (automatic voltage regulator) function
Check flexible mounts, coupling alignment, and anti-vibration elements for wear or deterioration
Test safety shutdown systems: high water temperature, low oil pressure, overspeed trip, and emergency stop function
Verify emission compliance systems (e.g. SCR catalyst condition for IMO Tier III units) and check exhaust back-pressure
Type-general inspection and maintenance points for this equipment category — not model-specific.
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