What Causes the Abnormal Noise When Releasing the Clutch?
1 Answers
In addition to the abnormal noise caused by aging or wear of the clutch components themselves, some human factors may also contribute to this issue. Here is a relevant introduction: Clutch Principle: The clutch is a crucial component in the transmission system, installed between the engine and the gearbox. It can disconnect or connect the engine to the gearbox. The clutch pressure plate is mounted on the engine flywheel, with the clutch disc positioned between the pressure plate and the flywheel. The clutch disc has a spline in the center, which secures a drive shaft—this shaft serves as the power input shaft for the gearbox. When the driver presses the clutch pedal, the clutch disengages; when the pedal is released, the clutch engages. Other Causes of Clutch Abnormal Noise: A sharp screeching noise heard when the clutch is about to engage, which disappears when the pedal is pressed and reappears upon release, is caused by a broken driven disc steel plate or exposed rivet heads scraping against the pressure plate or flywheel. This requires repair. If a metallic clashing sound occurs during engagement or disengagement, especially noticeable when starting with a heavy load, it is due to vibration between the driven disc spline hole and the shaft. Severe cases require repair or replacement. If a knocking sound is heard, it may result from loose friction plates on the steel plate or impact between the release lever and the window hole. When the clutch pedal is released very slowly, causing the vehicle to jerk and produce noise upon starting, this is due to sudden engagement of the driving and driven parts. Possible causes include: 1) mechanical linkage jamming, leading to sudden pressure application by the pressure plate onto the driven disc; 2) deformation of the driven disc or oil contamination on the friction lining, causing abrupt clutch engagement and resulting in jerking.
