Turbocharger · Turbochargers
The Mitsubishi MET42MA-HE is a marine turbo‑charger featuring a radial‑flow compressor and an axial‑flow turbine, designed to boost air intake for medium‑speed 4‑stroke diesel engines (bore 200–400 mm) with a pressure ratio of about 4:1.
Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.
| Compressor/turbine water washing | per maker/operator schedule, typically every 250-500 running hours or as boost/EGT trend indicates |
|---|---|
| Bearing/seal inspection | typically every 8,000-12,000 hours or at engine top-end overhaul, whichever comes first - confirm against the Mitsubishi MET series manual |
| Full overhaul (bearings, seals, balancing) | typically every 16,000-24,000 hours - confirm exact interval against current maker documentation, as this varies with fuel type and duty |
| Lube oil filter/strainer check | monthly or per running-hour schedule |
| Radial bearing clearance | typically renewed once clearance has increased well beyond the as-new setting - confirm the exact Mitsubishi MET series figure in the maker's manual |
|---|---|
| Rotor axial (thrust) float | wear limit is generally a few tenths of a mm above the as-new setting - confirm exact figure against maker's tables before condemning |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Turbochargers on main and auxiliary engines are checked as part of the engine's Continuous Machinery Survey scope; class typically expects evidence of scheduled overhaul per the maker's interval, or a condition-based extension supported by vibration/EGT trend data and oil analysis, so keep overhaul and washing records on file.
Estimated lifetime: Marine turbochargers of this size commonly run 20,000-30,000+ hours between major overhauls with regular water washing and oil analysis; actual life is strongly influenced by fuel quality and compressor/turbine fouling control
Free of charge — send us your request for Mitsubishi equipment. Our team checks it and replies by e-mail.
Other models of the same equipment type, Mitsubishi first.
Tell us what you need for this Mitsubishi MET42MA-HE — a part, a service call, a second opinion. Are you Mitsubishi? Claim this brand page.
Service engineer? Write the day report for this MET42MA-HE 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.