Diesel Engineering

Servicing, repairs and overhaul

Diesel engines are the heart of every vessel and therefore form the backbone of Marine Power Systems Diesel Engineering services.

Our workshop in Kopu, near Thames, serves as the New Zealand repair facility for Steyr Motors and we provide mobile service for these engines throughout New Zealand. Within the local area we also provide service for Caterpillar, Cummins, Doosan, MAN, John Deere, and Scania engines.

As well as our marine services, we also offer servicing for standby and prime power generator and industrial diesel sets. 



Engine servicing

Routine servicing for most makes and models or engine.


Repair and rebuilds

Minor repairs through to complete overhaul.


Fuel system maintenance

Injector testing and overhaul. Fuel pump timing and complete pump overhauls.


Water pump repairs

Seawater and freshwater pump repairs


Borescopic Inspections

Assessment of internal items using borescopic visual inspection


Cylinder head overhauls

Head machining, valve guide and seat replacement, crack testing.


Turbocharger repair and maintenance

For larger turbochargers


Heat exchanger cleaning

Heat exchanger, intercooler and auxiliary cooler maintenance



Diagnostic tooling for most modern electronic engines


Power measurements

In-situ power measurements direct from the output shaft or dyno testing