Section 8.3 Defective Turbocharger

Section 8.3
Defective Turbocharger

To determine if a defective turbocharger is causing excessive crankcase pressure, perform the following:‪

NOTICE:

Ensure that the engine is not allowed to operate longer than necessary to perform the crankcase pressure test. A complete loss of crankcase oil will severely damage the engine.‪

  1. Remove the turbocharger drain line connected to the crankcase and place the drain line into a suitable container; refer to the MBE 4000 Service Manual (6SE420), Chapter 6, “Air Intake System — Turbocharger”.
  2. Perform a crankcase pressure test; refer to "2.1 Crankcase Pressure Test" .
    1. If the engine crankcase pressure is less than 0.62 kPa (2.5 in. H2 O), replace the turbocharger; refer to the MBE 4000 Service Manual (6SE420), Chapter 6, “Air Intake System — Turbocharger”. Shut down the engine.
    2. If the engine crankcase pressure indicates no change, check for a worn or damaged valve or cylinder kit;

Section 8.3.1
Turbocharger Replacement

Perform the following steps to replace a defective turbocharger:‪

  1. Remove the defective turbocharger from the engine; refer to the MBE 4000 Service Manual (6SE420), Chapter 6, “Air Intake System — Turbocharger”.
  2. Tag the removed turbocharger for remanufacture.
  3. Install a replacement turbocharger to the engine; refer to the MBE 4000 Service Manual (6SE420) , Chapter 6, Air Intake System Chapter — Turbocharger.
  4. Verify replacement of new turbocharger; refer to "8.3.1.1 Test Engine with New Turbocharger"
Section 8.3.1.1
Test Engine with New Turbocharger

To determine if a new turbocharger resolved the excessive crankcase pressure, perform a crankcase pressure test;refer to "2.1 Crankcase Pressure Test" .‪

  1. If the engine crankcase pressure is 0.62 kPa (2.5 in. H2 O) or less, no further troubleshooting is required. Shut down the engine.
  2. If the engine crankcase pressure is greater than 0.62 kPa (2.5 in. H 2 O), shut down the engine. Check for a worn or damaged valve or cylinder kit; refer to "8.4 Worn or Damaged Valve or Cylinder Kit"


EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568
Generated on 10-13-2008

Leave a Reply

Your email address will not be published. Required fields are marked *