Auxiliary Engine (Generator Set) · Auxiliary Engines
The Wärtsilä 12VW38‑GS‑60Hz is a V‑type 12‑cylinder, 4‑stroke diesel engine coupled to an integrated generator set delivering approximately 5.5 MW at 60 Hz, designed for high‑power auxiliary applications on large vessels.
Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.
| Lube oil sample analysis | every 500 running hours, or per the maker's schedule |
|---|---|
| Fuel injector inspection/exchange | typically every 4,000-8,000 running hours depending on fuel quality - confirm against the maker's schedule |
| Turbocharger inspection/cleaning | every 4,000-8,000 hours, or condition-based on trend |
| Cylinder head/valve overhaul | typically every 12,000-18,000 hours, engine and fuel-grade dependent - confirm against the maker's manual |
| Crankshaft deflection check | every 3-6 months as part of the running survey |
| Major overhaul (piston/liner exchange) | commonly in the region of 24,000-32,000 hours for medium-speed trunk piston diesels of this class - confirm against the specific engine's maintenance manual and hours run since last overhaul |
| Piston ring end gap | typically on the order of 0.9-1.4 mm for a 380 mm bore engine of this class, following the usual 0.04-0.05 x bore diameter rule for medium-speed diesel rings - confirm against the engine's own manual, not a pass/fail figure on its own |
|---|---|
| Main/big-end bearing clearance | typically in the region of 0.2-0.4 mm on engines of this bore and speed class - the maker's manual governs the actual renewal limit |
| Cylinder liner bore wear | normally judged against a wear-per-1,000-hours trend and the maker's ovality limit rather than a single absolute figure |
| Exhaust valve seat recession | monitored by trend/condition rather than a fixed universal figure - confirm the maker's regrind/renewal limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Medium-speed diesel generator sets of this size are normally Continuous Survey Machinery (CMS) items; class typically reviews running hours since last overhaul, crankshaft deflection records, lube oil analysis trends, governor/safety trip test records and turbocharger overhaul history against the maker's recommended intervals, rather than opening the engine at every annual survey.
Estimated lifetime: Medium-speed four-stroke diesel engines of this class are typically designed for a major overhaul interval in the tens of thousands of running hours (commonly quoted around 24,000-32,000 hours before piston/liner renewal) and an overall service life well beyond 100,000 hours with correct overhaul practice; actual figures depend heavily on fuel quality, load profile and maintenance history - confirm against the engine's own maintenance manual.
Free of charge — send us your request for Wärtsilä equipment. Our team checks it and replies by e-mail.
Other models of the same equipment type, Wärtsilä first.
Tell us what you need for this Wärtsilä 12VW38-GS-60Hz — a part, a service call, a second opinion. Are you Wärtsilä? Claim this brand page.
Service engineer? Write the day report for this 12VW38-GS-60Hz in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →
Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.
Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.
Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.