Symptom Tree t021
| Cause | Correction |
|---|
|
Air compressor cylinder head is cracked or porous, or has a leaking gasket |
Inspect the air compressor cylinder head and gasket. Refer to Procedures 012-103, 012-104, or 012-106. |
 |
|
Lubricating oil cooler is leaking |
Check the lubricating oil cooler for coolant leaks. Refer to Procedure 007-003. |
|
|
Aftercooler is leaking (aftercooled engines only) |
Remove and pressure-test the aftercooler. Refer to Procedure 010-001. |
|
|
Air or combustion gases are entering the cooling system |
Check for air or combustion gases in the cooling system. Refer to Procedure 008-019. |
|
|
Cylinder head gasket is leaking |
Check the cylinder head gasket. Refer to Procedure 002-004. |
|
|
Cylinder head is cracked or porous, or an injector sleeve is leaking |
Pressure-test the cylinder head and inspect the injector sleeves. Refer to Procedure 002-004. |
|
|
Fuel heater is malfunctioning (if equipped) |
Check the fuel heater and replace, if necessary. Refer to the manufacturer’s instructions. |
|
|
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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|
Cylinder liner is corroded or cracked, or the cylinder block is cracked or porous |
Remove the oil pan. Pressure-test the cooling system to check for leaks. Refer to Procedure 001-027. |
