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MAN ES Turbocharging

NA-LV NA40-LV

Turbocharger · Turbochargers

Technical data from manufacturer or class sources · not yet verified by a person​‍​‍⁠⁠​‍⁠‍‍​​​⁠​‌‌⁠⁠

MAN ES Turbocharging NA-LV NA40-LV — NA-LV, 5500 kW max.

Specifications

Technical data.reference — unverified

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Frame SizeNA40-LV
Power max (kW)5500
Inspection

Inspector Detail ✓ verified

Common issues

  • Compressor wheel fouling due to poor air filtration
  • Turbine blade erosion from high-temperature exhaust gases
  • Bearing wear and vibration caused by misalignment or imbalance
  • Oil leakage from turbocharger bearings or seals
  • Compressor surge and stall due to incorrect turbocharger sizing or operation
  • Turbine housing cracking from thermal stress or vibration
  • Wastegate valve malfunction or sticking

Inspection checklist

  • Visual inspection of compressor and turbine blades for fouling or erosion
  • Check turbocharger bearings for wear, vibration, and oil leakage
  • Verify proper turbocharger alignment and balancing
  • Inspect compressor and turbine housings for cracks or damage
  • Check wastegate valve operation and adjust as needed
  • Monitor turbocharger performance using pressure and temperature sensors
  • Check oil supply and drainage systems for leaks or blockages
  • Verify proper operation of turbocharger control systems

Service intervals

major_overhaul25000 to 30000 hours
bearing_replacement10000 to 15000 hours
compressor_blade_cleaning5000 to 10000 hours
turbine_blade_inspection10000 to 20000 hours

Typical wear limits

compressor_blades5% to 10% of blade tip clearance
turbine_blades5% to 10% of blade tip clearance
turbocharger_bearings0.1 to 0.5 mm of radial clearance

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

Critical spares

  • Compressor and turbine blades
  • Turbocharger bearings and seals
  • Wastegate valve and actuator
  • Oil supply and drainage system components
  • Compressor and turbine housing gaskets and seals
  • Control system components, such as sensors and solenoids

Safety

  • High-temperature exhaust gases and potential fire hazard
  • Rotating machinery and potential entanglement or crushing hazard
  • Oil leakage and potential slip or fire hazard
  • Electrical shock from control system components

Class survey

Verify turbocharger performance, inspect for signs of wear or damage, and check control system operation during class surveys

Estimated lifetime: 40000 to 60000 hours

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