Main Engine 4-Stroke · Main Engines (4-Stroke)
The MTU 20VSeries 4000 M63 is a V‑20, four‑stroke marine diesel engine delivering up to 2 900 kW at ~1 800 rpm, featuring common‑rail high‑pressure injection and sequential twin turbochargers for fast response and compact power density.
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| item | every 1000-1500 hours for routine maintenance, 3000-4000 hours for intermediate overhaul, and 12000-15000 hours for major overhaul |
|---|
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_rings | 0.2-0.5 mm wear limit |
| crankshaft_bearings | 0.1-0.3 mm wear limit |
| camshaft_bearings | 0.1-0.3 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 Tier III emissions regulations, proper maintenance and record-keeping, and condition of critical components such as cylinder liners, piston rings, and turbochargers
Estimated lifetime: 20000-25000 hours before major overhaul
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