Series 60 DDEC V Troubleshooting – Section 2.7 Restricted Oil Cooler

Section 2.7
Restricted Oil Cooler

To determine if a restricted oil cooler is causing low oil pressure, perform the following steps:‪

1. Install the Diagnostic Data Reader to the vehicles Display Data Line Adaptor, see Figure "Typical Display Data Line Adaptor" ; refer to OEM guidelines.
2. Start and run the engine at 1800 rpm.
3. Run the engine at 1800 rpm with a no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range, 88 - 96°C (190 - 210°F).
   1. If the DDR is indicating a lubricating oil temperature less than or equal to 110°C (230°F). Shut down the engine, disconnect the DDR, and check pressure regulator valve; refer to "2.8 Nonfunctional or Sticking Oil Pressure Regulator Valve" .
   2. If the DDR is indicating a lubricating oil temperature greater than 110°C (230°F). Shut down the engine and repair oil cooler; refer to "2.7.1 Oil Cooler Repair" .

Section 2.7.1
Oil Cooler Repair

Perform the following steps to repair the oil cooler:‪

1. Remove and repair oil cooler, refer to appropriate service manual, lubrication system chapter.
2. Clean the oil cooler; refer to appropriate service manual, lubrication system chapter.
3. Inspect the oil cooler for damage; refer to appropriate service manual, lubrication system chapter.
4. Install repaired oil cooler; refer to appropriate service manual, lubrication system chapter.
5. Verify repair of oil cooler; refer to "2.7.1.1 Test Engine with Repaired Oil Cooler" .

Section 2.7.1.1
Test Engine with Repaired Oil Cooler

Perform the following steps to determine if oil cooler repair resolved low oil pressure:‪

1. Install the Diagnostic Data Reader to the vehicles Display Data Line Adaptor, see Figure "Typical Display Data Line Adaptor" ; refer to OEM guidelines.
2. Refer to "2.7 Restricted Oil Cooler" for the exhaust caution before proceeding. Start and run the engine at 1800 rpm.
3. Run the engine through its operating range with no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range, 88 - 96°C (190 - 210°F).
   1. If the DDR is indicating a lubricating oil temperature less than or equal to 110°C (230°F) at 1800 rpm, disconnect the DDR and shut down the engine. No further troubleshooting is required.
   2. If the DDR is indicating a lubricating oil temperature greater than 110°C (230°F) at 1800 rpm, shut down the engine and disconnect the DDR. Check pressure regulator valve; refer to "2.8 Nonfunctional or Sticking Oil Pressure Regulator Valve" .