Main Engine 4-Stroke · Main Engines (4-Stroke)
Regular maintenance and attention to potential common failures are crucial for ensuring the reliability and longevity of this marine engine. The Alaska diesel electric L6140AL is a robust propulsion engine designed for demanding maritime applications. This six-cylinder engine boasts a power output of 447 kilowatts at 2100 revolutions per minute, delivering a torque of 1730 Newton-meters. The L6140AL features a four-stroke combustion cycle, mechanical direct injection fuel system, and turbo air-to-water (TAW) aspiration. It adheres to EPA engine family standards 7ADEM15.0RLR and is certified for operation within the E3 general cycle. To maintain optimal performance, it's essential to address potential issues such as poor combustion, lubricating oil problems, cooling system deterioration, valve train faults, fuel system leaks, and bearing or alignment issues. A comprehensive spare parts inventory should include fuel and lubricating oil filters, seals, gaskets, injector components, valve train parts, and essential pump service items. Critical installations may require additional spares such as sensors, relays, control modules, starting system components, and bearings.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
Other models of the same equipment type, Alaska diesel electric first.
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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