Caterpillar каталог.

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The turbocharger makes excessive noise.

Probable Cause

• The air filter element is dirty.
  The air filter element must be cleaned or replaced.
• The air filter element is not sealed correctly. A connection between the air filter and the turbocharger is loose.
  Inspect the air filter element and the air supply line to the turbocharger for correct installation.
• A restriction exists in the tube between the air filter and the turbocharger.
  The component must be repaired or replaced.
• A air leak or restriction exists in the line between the turbocharger and the intake manifold.
  The component must be repaired or replaced.
• A restriction exists in the exhaust system.
  The component must be repaired or replaced.
• The turbocharger is loose or the clamps and bolts on the turbocharger are loose.
  Correctly position the turbocharger and tighten the clamps and bolts.
• The intake manifold is cracked, loose or the flange is distorted.
  The intake manifold must be repaired or replaced.
• The exhaust manifold is cracked, loose, or the flange is distorted.
  The exhaust manifold must be repaired or replaced.
• The flow of the engine oil is delayed to the turbocharger when the engine is started. Insufficient oil flows to the turbocharger when the engine is running.
  Check the following components for correct operation:
  • Engine oil pump
  • Engine oil bypass valve
  • Engine oil filter
  • Viscosity of the engine oil
  • Restrictions in oil lines
• The engine oil is dirty.
  Drain the engine oil. Install the correct type of engine oil. Replace the engine oil filter.
• The incorrect type of engine oil is installed.
  Drain the engine oil. Replace the engine oil filter. Install the correct type of engine oil.
• The oil supply line from the engine oil pan is restricted.
  The oil supply line must be repaired or replaced.
• The turbine housing is damaged or restricted.
  The turbine housing must be repaired or the turbocharger must be replaced.
• The bearings of the turbocharger are worn.
  Replace the turbocharger.
• Excessive dirt exists in the compressor housing.
  Clean the compressor housing.
• Carbon has collected behind the rotor of the turbine.
  Remove the carbon.
• The engine rpm increases too rapidly when the engine is started.
  Check the fuel injection pump for correct operation and settings.
• The period of time at high idle is insufficient.
  Check the fuel injection pump for correct operation and settings.
• Engine oil is leaking from the oil supply line.
  The oil supply line must be repaired or replaced.
• A restriction exists in the bearing housing of the turbocharger.
  The bearing housing must be repaired or the turbocharger must be replaced.
• A restriction exists in the engine oil filter.
  Clean the engine oil filter base and the housing for the engine oil filter. Check the operation of the engine oil bypass valve. Replace the engine oil filter.
• The engine stopped too soon from a high load condition.
  Check the following components for correct operation or damage:
  • Compressor impeller of the turbocharger
  • Coolant system
  • Fuel injection pump
  • Air/fuel ratio control
  • Valve lash
  • Fuel injection nozzles