Fan Belts Are Incorrectly Adjusted
To determine if misadjusted fan belts are causing high engine coolant temperature, perform the following:
- Test fan belt(s) tension; refer to appropriate service manual, preventive maintenance chapter.
- Compare tension to belt specifications listed in Table
"Fan Belt Tension"
- If the belt(s) tension is within specification, check the thermo-modulated fan; refer to "13.6 Inoperative Thermo-Modulated Fan" .
- If the belt(s) tension is not within specification,refer to "13.5.1 Belt Tension Resolution" .
Single Belt, N (lb)
2 or 3 Belts, N (lb)
355 - 445 (80 - 100)
266 - 355 (60 - 80)
Belt Tension Resolution
Perform the following steps to resolve incorrect belt tension:
- Readjust belt(s) tension as necessary; refer to appropriate service manual, preventive maintenance chapter.
- Verify belt tension resolution; refer to "184.108.40.206 Test Engine with Correct Belt Tension" .
Test Engine with Correct Belt Tension
Perform the following to determine if exterior radiator repair 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 down the engine.
- If the engine coolant temperature is not 88-96°C (190-210°F), shut down the engine. Check thermo-modulated fan; refer to "13.6 Inoperative Thermo-Modulated Fan" .
|EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567|
|Generated on 10-13-2008|