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. |
- Remove the turbocharger drain line connected to the crankcase and place the drain line into a suitable container; refer to MBE 900 Service Manual (6SE9007), air intake system chapter-turbocharger.
- Perform a crankcase pressure test. Refer to "2.1 Crankcase Pressure Test"
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- If the engine crankcase pressure is less than 0.62 kPa (2.5 in. H2 O), replace the turbocharger; refer to MBE 900 Service Manual (6SE9007), air intake system chapter. Shut down the engine.
- If the engine crankcase pressure indicates no change, check for a worn or damaged valve or cylinder kit; refer to "8.3.1.1 Test Engine with New Turbocharger" . Shut down the engine.
Section 8.3.1
Turbocharger Replacement
Perform the following steps to replace a defective turbocharger:
- Remove the defective turbocharger from the engine; refer to MBE 900 Service Manual (6SE9007), air intake system chapter.
- Tag the removed turbocharger for remanufacture.
- Install a replacement turbocharger to the engine; refer to MBE 900 Service Manual (6SE9007), air intake system chapter.
- 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" .
- 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.
- 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 900 DDEC VI Troubleshooting Guide - 6SE580 |
Generated on 10-13-2008 |