Series 60 Improper Engine Coolant Level

To determine if improper engine coolant level is causing high engine coolant temperature, perform the following: ‪

1. Visually inspect the radiator coolant level; refer to OEM guidelines.
   1. If the radiator coolant level is within 2.0 in. (approximately 50 mm) of the radiator filler neck, check insufficient radiator air circulation;
   2. If the radiator coolant level is not within 2 in. (approximately 50 mm) of the radiator filler neck,

Improper Coolant Level Resolution

Perform the following steps to resolve improper coolant level: ‪

1. Fill coolant system to correct level;
2. Verify coolant level resolution;

Test Engine with Proper Coolant Level

Perform the following to determine if proper coolant level resolved high engine coolant temperature: ‪

1. Start and run the engine.
2. Run the engine through its operating range with no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range.
   1. If the engine coolant temperature is 88-96 ° C (190-210 ° F), no further troubleshooting is required. Shut down the engine.
   2. If the engine coolant temperature is not 88-96 ° C (190-210 ° F), shut down the engine. Check for insufficient radiator air circulation;