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 "13.5.7 Drive Belts" .
- Compare tension to belt specifications listed in Table
"Fan Belt Tension"
2 or 3 Belts
80-100 lbs (356-445 N)
60-80 lbs (267-356 N)
Belt Tension Resolution
Perform the following steps to resolve incorrect belt tension:
- Readjust belt(s) tension as necessary; refer to "13.5.7 Drive Belts" .
- Verify belt tension resolution; refer to "188.8.131.52 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 the engine down.
- If the engine coolant temperature is not 88-96°C (190-210°F), shut the engine down. Check thermo-modulated fan; refer to "27.6 Inoperative Thermo-Modulated Fan" .
|Series 50 Service Manual - 6SE50|
|Generated on 10-13-2008|