18V48/60CR

Häufige Probleme

• Common-rail high-pressure pump wear or leakage
• Injector control valve failures triggering a cylinder cut-out
• Turbocharger fouling reducing charge air pressure across the multiple turbochargers fitted to this size
• Exhaust valve seat burning or cracking under sustained high load
• Piston ring/liner wear from incorrect cylinder lubrication feed rate
• SCR/exhaust after-treatment fouling affecting back-pressure, where fitted for Tier III compliance
• Camshaft-driven valve train wear
• Crankcase oil mist detector fouling reducing detection sensitivity

Prüfliste

• Check exhaust temperature spread and common-rail pressure trend per cylinder
• Inspect turbochargers for fouling and vibration
• Check injector control valve function via the engine monitoring system's alarm history
• Measure cylinder liner wear against the maker's limits
• Inspect the SCR catalyst and reductant system, if fitted
• Check main/big-end bearing clearances at scheduled intervals
• Verify governor and safety system function (overspeed, low lube oil pressure trips)
• Inspect charge air coolers for fouling and leakage
• Check crankcase oil mist detector function
• Inspect vibration damper condition

Wartungsintervalle

Typische Intervalle für diese Bauart, keine Herstellerangabe für Ihr Modell. Verbindlich ist das Handbuch des Herstellers.

Typische Verschleißgrenzen

Die Bereiche sind für diese Bauklasse typisch. Maßgeblich sind stets die Herstellerunterlagen zur jeweiligen Seriennummer.

Kritische Ersatzteile

• Injector/injection valve units
• Common-rail high-pressure pump spares
• Cylinder head gasket set
• Piston ring set
• Main/big-end bearing shells
• Turbocharger repair kit
• Exhaust valve and seat set
• SCR catalyst elements, if fitted, on a condition basis

Sicherheit

• Crankcase explosion risk - respect the mandatory cooling period before opening inspection doors after an overheat or bearing alarm
• High-pressure common-rail fuel system carries a residual-pressure hazard - follow the maker's depressurization/lock-out procedure before opening injection components
• Hot surfaces on the exhaust manifold, turbochargers and SCR system
• Starting air system stored pressure
• Large rotating masses - flywheel and coupling guarding must be in place, and the engine locked out before barring

Klassenbesichtigung

Engines this size are typically enrolled in Continuous Survey of Machinery (CSM), allowing component-based renewal instead of a fixed overhaul date. For Tier III compliance via SCR, class will also want NOx Technical Code documentation and SCR maintenance records. Crankcase inspection, governor/overspeed trip tests and bearing clearance records are typically required at each survey window.

Geschätzte Lebensdauer: Large medium-speed trunk piston main engines of this class are typically designed for 80,000-120,000+ running hours between major overhauls or renewals, with liners, pistons and injection components renewed on shorter condition-based cycles - actual life depends on load profile, fuel quality and maintenance regime.