Series 60 DDEC VI Troubleshooting – Section 13.1 Improper Engine Coolant Level

Section 13.1
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.
2. Examine the results.
   1. If the radiator coolant level is within 2.0 in. (approximately 50 mm) of the radiator filler neck, check insufficient radiator air circulation; refer to "13.2 Insufficient Radiator Air Circulation" .
   2. If the radiator coolant level is not within 2 in. (approximately 50 mm) of the radiator filler neck, refer to "13.1.1 Improper Coolant Level Resolution" .

Section 13.1.1
Improper Coolant Level Resolution

Perform the following steps to resolve improper coolant level:‪

1. Fill coolant system to correct level; refer to appropriate service manual, preventive maintenance chapter.
2. Verify coolant level resolution; refer to "13.1.1.1 Test Engine with Proper Coolant Level" .

Section 13.1.1.1
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). Shut down the engine. Determine the cause of low coolant level.Refer to "13.1.1.2 Pressure Test the Cooling System"
   2. If the engine coolant temperature is not 88-96°C (190-210°F), shut down the engine. Check for insufficient radiator air circulation; refer to "13.2 Insufficient Radiator Air Circulation" .

Section 13.1.1.2
Pressure Test the Cooling System

Perform the following to pressure test the cooling system:‪

1. Pressure test the cooling system with a pressure tester.
   1. Check for external leaks on the engine, radiator, all coolant hoses and the heater core in the cab.
   2. Repair any external leaks and perform the procedure in found in section "13.1.1.3 Test Engine with Coolant Leaks Repaired" .
   3. If there are no external leaks perform the procedure found in section "13.2 Insufficient Radiator Air Circulation" .

Section 13.1.1.3
Test Engine with Coolant Leaks Repaired

Perform the following steps to test the engine with coolant leaks repaired:‪

1. Start and run the engine.
2. Run the engine through its operating range with no-load for approximately five minutes allowing the engine coolant to reach normal operating range.
   1. If engine the coolant temperature is 88-96°C (190-210°F). Shut down the engine no further troubleshooting is required.
   2. If the engine coolant temperature is not 88-96°C (190-210°F), shut down the engine. Check for insufficient radiator air circulation.Refer to "13.2 Insufficient Radiator Air Circulation" .