Series 50 – Section 25.7 High Inlet Air Temperature

Section 25.7
High Inlet Air Temperature

To determine if high inlet air temperature is causing lack of power, perform the following:‪

1. Test the radiator fan, fan drive, or fan shroud for proper operation or configuration; refer to OEM guidelines.
   1. If the radiator fan, fan drive, or fan shroud pass OEM test, check high altitude operation; refer to "25.8 High Altitude Operation" .
   2. If the radiator fan, drive or shroud did not operate correctly; refer to "25.7.1 Radiator Fan, Drive and Shroud Replacement" .

Section 25.7.1
Radiator Fan, Drive and Shroud Replacement

Perform the following steps to replace the radiator fan, drive, and or shroud:‪

1. Remove and replace the radiator fan, drive, and or shroud; refer to OEM guidelines.
2. Verify replacement; refer to "25.7.1.1 Test the Engine with Radiator Fan, Fan Drive, or Fan Shroud Replacement" .

Section 25.7.1.1
Test the Engine with Radiator Fan, Fan Drive, or Fan Shroud Replacement

Perform the following steps to determine if replaced radiator fan, fan drive, or fan shroud resolved lack of power condition:‪

1. Start and run the engine.
2. Test drive the vehicle to ensure lack of power has been resolved.
   1. If no lack of power occurred during the test drive, no further troubleshooting is required. Shut the engine down.
   2. If lack of power occurred during the test drive, shut the engine down. Check high altitude operation; refer to "25.8 High Altitude Operation" .