Main Engine 4-Stroke · Main Engines (4-Stroke)
The MTU 8V396 is a high‑speed V‑type, turbocharged and aftercooled 4‑stroke diesel engine delivering about 1080 kW at 1800 rpm, designed for main propulsion on medium‑size commercial vessels and fast craft.
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| Lube oil and filter change | typically 500 h for MDO service - confirm against the engine's own manual |
|---|---|
| Gearbox oil change | typically 1000-2000 h - confirm against the gearbox manual |
| Charge air cooler cleaning | typically 1000-2000 h |
| Valve clearance check | typically 1000-1200 h |
| Injector exchange | typically 4000-6000 h - confirm against the engine's own manual |
| Turbocharger overhaul | typically 8000-12000 h |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Piston ring end gap | typically 0.3-0.6 mm for this bore class - confirm against the engine's own manual |
|---|---|
| Valve clearance (cold) | typically 0.3-0.5 mm intake / 0.5-0.7 mm exhaust - confirm against the engine's own manual |
| Big-end / main bearing clearance | typically 0.05-0.15 mm - confirm against the engine's own manual |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Usually under Continuous Survey Machinery; class reviews injector/turbocharger exchange records, crankcase relief valve maintenance, and gearbox/clutch condition at survey.
Estimated lifetime: typically 25,000-35,000 hours to major overhaul for high-speed marine diesels of this class, depending on load profile
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