Main Engine 4-Stroke · Main Engines (4-Stroke)
The MAN 9LL35/44CD is a medium‑speed, 9‑cylinder inline four‑stroke main engine delivering 5 940 kW at 720 rpm, featuring common‑rail fuel injection for improved efficiency and emissions.
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| oil_change | 1000-1500 hours |
|---|---|
| fuel_filter_change | 500-1000 hours |
| air_filter_change | 1000-2000 hours |
| coolant_change | 2000-4000 hours |
| injector_overhaul | 4000-6000 hours |
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_ring | 0.5-1.5 mm wear limit |
| crankshaft_journal | 0.1-0.5 mm wear limit |
| camshaft_lobe | 0.1-0.5 mm wear limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyor typically checks for compliance with classification society rules and regulations, including verification of maintenance records, inspection of critical components, and review of safety procedures and emergency preparedness
Estimated lifetime: 20000-30000 hours
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