Table of Contents

Project

Complete 72K Major Overhaul of Wartsila W8L26A Engine on Multi-Purpose Construction Vessel (MPCV) in Mexico

Table of Contents

Background

Industry
Marine
Solution
72K Major Overhaul
(MoH) of Main Engine
Make & Model
Wartsila W8L26A
Main Engine
Asset
Multi-Purpose
Construction Vessel
(MPCV)

Summary About The Project

Neptunus successfully completed a 72K major overhaul of a Wartsila W8L26A main engine onboard an Multi-Purpose Construction Vessel (MPCV) operating in Mexico. The overhaul was carried out after the engine completed approximately 76,491 running hours to restore operational reliability, improve performance, and ensure safe long-term operation.

The scope included complete dismantling, inspection, calibration, servicing, and reassembly of major engine systems in accordance with OEM procedures. Critical components such as cylinder heads, pistons, connecting rods, cylinder liners, crankshaft bearings, fuel injection systems, lubrication systems, cooling systems, and camshaft assemblies were overhauled and calibrated.

Following completion of the overhaul, successful load trials were conducted, and all engine operating parameters, including temperatures, pressures, vibration levels, and exhaust gas readings, were found within acceptable limits, confirming stable engine performance.

Planning

Procedure Carried Out

1. Cylinder Head System:
2. Rocker Arms and Valve Mechanism:
3. Piston and Connecting Rod Assembly:
4. Cylinder Liners and Engine Block :
5. Crankshaft and Bearing System:
6. Fuel Injection System:
7.Governor and Control System:
8. Cooling and Lubrication System:
9. Air Cooler and Turbocharger System:
10. Pre-Commissioning and Load Trials:

Scope for Improvement

Recommendations

Conclusion

Neptunus successfully completed the 72K major overhaul of the Wartsila W8L26A main engine in Mexico with successful restoration of engine reliability and operational stability. Through systematic inspection, precision calibration, component renewal, and strict adherence to OEM procedures, the engine was returned to service with stable operating performance.

This project demonstrates Neptunus expertise in delivering complex marine main engine overhaul services for offshore and marine applications.

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