Main Engine 4-Stroke · Main Engines (4-Stroke)
Typically found on small to medium-sized commercial vessels, the 13T4L550 engine from CMD (COSTRUZIONe MOTORI DIESEL) is a reliable powerplant designed for propulsion tasks. Operating in a Category 1 environment, it features a direct injection common rail fuel system and turbocharged four-stroke combustion cycle, ensuring efficient performance with a rated power output of 81 kilowatts. The engine can handle various duty cycles, making it suitable for recreational use as well. Maintenance requires regular checks on exhaust temperatures, lubricating oil pressure, cooling systems, and starting behavior to ensure optimal operation and longevity. Common issues include poor combustion from injector wear or fuel contamination, low lubricating-oil pressure due to pump faults, and cooling-system deterioration. Proper spare parts management, including filters, injectors, and valve components, is crucial for minimizing downtime and maintaining vessel efficiency during operations at sea.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
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What our service work and the manufacturer documentation say about keeping this model running.
Review running records for exhaust-temperature spread, lubricating-oil pressure, cooling temperatures, starting behaviour, vibration and abnormal consumption trends. Inspect for fuel, lubricating-oil, cooling-water and exhaust leaks and check the condition of flexible connections, mounts, foundations and coupling or gearbox interfaces. Examine filters, coolers, pumps, valve gear, injectors and accessible combustion components in accordance with the planned-maintenance system. Check crankcase condition, oil analysis and any available bearing or vibration monitoring for developing wear. A surveyor should verify alarms, shutdowns, overspeed protection, emergency stopping arrangements and guarding of moving or hot parts as applicable to the installation. For cylinder dimensions, rotational speed, pressures, clearances, temperatures, wear limits and setting values, refer to the manufacturer documentation for the exact figure.
Carry fuel-filter and lubricating-oil-filter elements, approved seals and gaskets, injector service or replacement components, valve-train wear parts appropriate to the engine, and service parts for essential pumps. Critical installations should also hold selected sensors, relays or control modules, starting-system components, belts or flexible elements where fitted, and manufacturer-recommended bearing or cylinder-head service items. The exact onboard spare scale should follow the manufacturer, class requirements, engine redundancy and the vessel's trading pattern.
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