Symptom Tree t050
| Cause | Correction |
|---|
Refer to Engine Noise Diagnostic Procedures – General Information at the end of Section TS before using this symptom tree.
|
Electronic fault codes active or high counts of inactive fault codes |
Refer to Section TF in the Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or Section TF in the Troubleshooting and Repair Manaul for CELECT™ Systems, Bulletin 3666084. |
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|
Lubricating oil pressure is below specification |
Check the oil pressure. If the pressure is low, refer toProcedure 007-028. |
|
|
Lubricating oil level is below specification |
Check the oil level. Verify the dipstick calibration and the oil pan capacity. Fill the system to the specified level. Refer to Procedures 007-009 and 007-037. |
|
|
Lubricating oil is thin or diluted |
Refer to Section 7. If the oil pressure is low, refer to the Lubricating Oil Pressure Low symptom tree. |
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|
Flywheel or flexplate capscrews are loose or broken |
Check the flywheel or flexplate and the mounting capscrews. Refer to Procedure 016-005. |
|
|
Torque converter is loose |
Check the torque converter. Refer to the OEM service manual. |
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|
Main bearing or connecting rod bearing noise |
Refer to Procedure 001-006. |
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|
Main bearings are damaged or worn, or the wrong bearings are installed |
Inspect the main bearings for damage, excessive wear, and the correct part number. Refer to Procedure 001-006. |
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|
Crankshaft journals are damaged or out of round |
Inspect the crankshaft journals. Refer to Procedure 001-016. |
