7S90ME-C10.5

Common issues

• Excessive cylinder liner wear due to inadequate fuel quality or improper injection timing
• Scavenge air leakage leading to reduced engine efficiency and increased emissions
• Fuel pump and injector wear, resulting in poor combustion and increased maintenance costs
• Crankpin bearing wear, potentially causing engine vibration and damage
• Turbocharger fouling or failure, impacting engine performance and efficiency
• Lube oil contamination, affecting engine longevity and reliability
• Exhaust valve issues, including leakage or burning, due to inadequate maintenance or overheating

Inspection checklist

• Cylinder head and valve condition
• Piston and ring condition
• Crankshaft and bearing condition
• Fuel injection system and pump condition
• Turbocharger condition and performance
• Lube oil system and filter condition
• Exhaust system and valve condition
• Scavenge air system and filter condition
• Engine control system and sensor condition

Service intervals

Typical wear limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

• Cylinder liners
• Piston rings
• Fuel injectors
• Crankshaft bearings
• Turbocharger components
• Exhaust valves
• Lube oil pumps

Safety

• Risk of explosion or fire due to fuel leakage or improper handling
• Injury from moving parts or hot surfaces
• Asphyxiation from inadequate ventilation in enclosed spaces

Class survey

The class surveyor will typically check the engine's overall condition, including the cylinder head, piston, and crankshaft, as well as the fuel injection system, turbocharger, and lube oil system. They will also verify that the engine is properly maintained and that all necessary repairs and overhauls have been performed.

Estimated lifetime: 30000-50000 hours