Symptom Tree t018
| Cause | Correction |
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Coolant mixture of antifreeze and water is not correct |
Verify the concentration of antifreeze in the coolant. Add antifreeze or water to correct the concentration. Refer to Cummins Coolant Requirements and Maintenance, Bulletin 3666132. |
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Coolant is rusty and has debris |
Drain and flush the cooling system. Fill with correct mixture of antifreeze and water. Refer to Procedure 008-018. |
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Transmission oil cooler or torque converter cooler is leaking |
Check the transmission oil cooler and torque converter cooler for coolant leaks. Refer to the manufacturer’s instructions. |
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Lubricating oil leaks from lubricating oil cooler, head gasket, head, turbocharger, and cylinder block |
Refer to the Lubricating Oil Consumption Excessive symptom tree. |
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Combustion gases are entering the cooling system |
Check for combustion gases in the cooling system. Refer to Procedure 008-019. |
