Inoperative Thermo-Modulated Fan
To determine if an inoperative thermo-modulated fan is causing high engine coolant temperature, perform the following:
- Test the thermo-modulated fan; refer to OEM guidelines.
- If the thermo-modulated fan is functioning correctly, check thermostats; refer to "27.7 Faulty Thermostats" .
- If the thermo-modulated fan is not functioning correctly; refer to "27.6.1 Thermo-Modulated Fan Replacement" .
Thermo-Modulated Fan Replacement
Perform the following steps to replace inoperative thermo-modulated fan:
- Replace inoperative thermo-modulated fan; refer to OEM guidelines.
- Verify thermo-modulated fan replacement; refer to "220.127.116.11 Test Engine with Replaced Thermo-Modulated Fan" .
Test Engine with Replaced Thermo-Modulated Fan
Perform the following to determine if thermo-modulated fan replacement resolved high engine coolant temperature:
- Start and run the engine.
- Run the engine through its operating range with no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range.
- If the engine coolant temperature is 88-96°C (190-210°F), no further troubleshooting is required. Shut the engine down.
- If the engine coolant temperature is not 88-96°C (190-210°F), shut the engine down. Check thermostats; refer to "27.7 Faulty Thermostats" .
|Series 50 Service Manual - 6SE50|
|Generated on 10-13-2008|