Symptom Tree t108
| Cause | Correction |
|---|
|
Bulk coolant supply is contaminated |
Check the bulk coolant supply. Drain the coolant and replace with noncontaminated coolant. Replace the coolant filters. Refer to Cummins Coolant Requirements and Maintenance, Bulletin 3666132. |
 |
|
Lubricating oil cooler is malfunctioning |
Check the oil cooler. Refer to Procedure 007-003. |
|
|
Torque converter cooler disc is not installed correctly |
Check the disc for correct installation. Refer to the OEM service manual. |
|
|
Cylinder head gasket is leaking |
Check the cylinder head gasket. Refer to Procedure 002-004. |
|
|
Cylinder head is cracked or porous |
Remove intake and exhaust manifolds. Check for evidence of coolant leak. If necessary, operate engine at low idle. Pressure-test the cylinder head. Refer to Procedure 002-004. |
|
|
Cylinder block is cracked or porous |
Inspect the cylinder block. Refer to Procedure 001-027. |
