Replace the torque converter under any of the following
conditions:
| • | External leaks appear in the hub weld area. |
| • | The converter hub is scored or damaged. |
| • | The converter pilot is broken, damaged, or fits poorly into the
crankshaft. |
| • | You discover steel particles after flushing the cooler and the
cooler lines. |
| • | The pump is damaged, or you discover steel particles in the converter. |
| • | The vehicle has TCC shudder and/or no TCC apply. Replace the torque
converter only after all hydraulic and electrical diagnoses have been made.
The converter clutch material may be glazed. |
| • | The converter has an imbalance which cannot be corrected. Refer
toFlexplate/Torque Converter Vibration Test
. |
| • | The converter is contaminated with engine coolant which contains
antifreeze. |
| • | An internal failure occurs in the stator roller clutch. |
| • | You notice excessive end play. |
| • | Overheating produces heavy debris in the clutch. |
| • | You discover steel particles or clutch lining material in the
fluid filter or on the magnet, when no internal parts in the unit are worn
or damaged. This condition indicates that lining material came from the converter. |
Do Not Replace the Torque Converter
Do not replace the torque converter if you discover any of the following
symptoms:
| • | The oil has an odor or the fluid is discolored, even though metal
or clutch facing particles are not present. |
| • | The threads in one or more of the converter bolt holes are damaged.
Correct the condition with a new J-nut. |
| • | Transmission failure did not display evidence of damaged or worn
internal parts, steel particles or clutch plate lining material in the unit
and inside the fluid filter. |
| | The vehicle has been exposed to high mileage only. An exception may
exist where the lining of the torque converter clutch dampener plate has seen
excess wear by vehicles operated in heavy and/or constant traffic, such as
taxi, delivery, or police use. |
