MBE 900 DDEC VI Troubleshooting

Section 7.3 Leaking Oil Heat Exchanger

Section 7.3
Leaking Oil Heat Exchanger

To determine if a leaking oil heat exchanger is causing excessive oil consumption, perform the following:‪

  1. Check for oil in the engine coolant or radiator.
    1. If oil is present in either the engine coolant or radiator; go to step 2 .
    2. If no oil is present in either the engine coolant or radiator, check for a defective air compressor; refer to "7.4 Defective Air Compressor" .
  2. Remove the oil heat exchanger and housing.
  3. Clean both the oil side and water side of the oil heat exchanger.
  4. Visually inspect the core for cracks.
    1. If cracks are present, replace oil heat exchanger, refer to MBE 900 Service Manual (6SE9007), lubrication system chapter. Verify the replacement of the oil heat exchanger, refer to "7.3.1 Test Engine with New Oil Heat Exchanger" .
    2. If no cracks are present, complete a lube oil consumption report; call Detroit Diesel Customer Support Center (313-592-5800) for a form.

Section 7.3.1
Test Engine with New Oil Heat Exchanger

Perform the following steps to determine if the replaced oil heat exchanger reduced the oil consumption:‪

warning

PERSONAL INJURY

To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.‪

  1. Start and run the engine to operating temperature: 88°C (190°F)..
  2. Shut down the engine.
  3. Check the engine coolant for the presence of oil.
    1. If no oil is present in the coolant, perform a lube oil consumption test report; refer to "7.3.1.1 Test Engine for Reduced Oil Consumption" .
    2. If oil is present in the coolant, check for a defective turbocharger. Refer to "7.5 Defective Turbocharger" .
Section 7.3.1.1
Test Engine for Reduced Oil Consumption

Perform a lube oil consumption report; call the Detroit Diesel Customer Support Center at 313-592-5800 for a form.‪

    Review the oil consumption report.‪

  1. If the oil consumption report data is within specifications, check for defective air compressor; refer to "7.4 Defective Air Compressor" .
  2. If the oil consumption report data is not within specifications, call Detroit Diesel Customer Support Center at 313-592-5800.


EPA07 MBE 900 DDEC VI Troubleshooting Guide - 6SE580
Generated on 10-13-2008

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