Main Engine 4-Stroke · Main Engines (4-Stroke)
The MAN 9LL28/32S is a medium‑speed, inline 9‑cylinder four‑stroke diesel engine delivering about 2 200 kW at ~775 rpm, designed for flexible fuel use (MGO/HFO) and equipped with constant‑pressure turbocharging.
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| oil_change | 400-600 hours |
|---|---|
| fuel_filter_change | 200-400 hours |
| air_filter_change | 100-200 hours |
| cooling_system_flush | 1000-2000 hours |
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_ring | 0.5-1.0 mm wear limit |
| crankshaft_bearing | 0.1-0.5 mm wear limit |
| fuel_injector | 1-2% flow rate deviation limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
The class surveyor will typically check the engine's overall condition, including the cylinder head, piston, and crankshaft. They will also inspect the fuel, lubrication, and cooling systems, as well as the exhaust and starting air systems. The surveyor will verify that the engine is in compliance with the relevant regulations and standards, including those related to emissions and safety.
Estimated lifetime: 20000-30000 hours
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