What Causes Torque Converter Clutch Failure?
1 Answers
Torque converter clutch failure may be caused by excessive free travel of the clutch, uneven pressure distribution, or insufficient free travel. The specific reasons are as follows: Excessive free travel of the clutch: When the free travel is too large, pressing the pedal cannot fully compress the diaphragm spring, which should be adjusted. Incorrect installation of the driven disc (front and back reversed) may cause it to continue rubbing against the flywheel, requiring reassembly. Warping deformation of the driven disc can also cause friction with the flywheel or pressure plate, necessitating correction of the driven disc. Uneven pressure distribution: Uneven pressure distribution between the driving and driven discs, or inconsistent adjustment of the release levers, can lead to clutch judder due to non-simultaneous engagement. This requires replacing the clutch pressure springs or leveling the release levers. Poor contact of the clutch lining, surface hardening, or adhesive contamination may require re-riveting the lining. Warping of the driven disc can cause irregular contact during clutch engagement, requiring correction or replacement of the driven disc. Insufficient free travel: No free travel or insufficient free travel of the clutch pedal should be adjusted. Worn clutch friction plates may keep the clutch in a semi-engaged state, which can be resolved by adjusting the free travel. Hardened clutch lining should be cleaned or replaced. Twisting of the driven disc or broken damping springs requires repair or replacement of the driven disc. Lack of lubrication in the clutch release bearing necessitates oiling or replacement of the bearing.