What are the reasons for incomplete clutch disengagement?
2 Answers
The reasons for incomplete clutch disengagement are: 1. The free travel of the clutch pedal is too large; 2. The inner ends of the release levers are not on the same plane, with individual levers being deformed, broken, or severely worn; 3. The clutch driven plate is warped, rivets are loose, or the newly replaced clutch friction disc is too thick; 4. The clutch driven plate is installed backwards; 5. The keyway of the driven plate hub and the spline teeth of the transmission's first shaft have too small a gap or are stuck, making movement difficult. The functions of the clutch are: 1. To ensure smooth vehicle starting; 2. To facilitate gear shifting to adapt to changing driving conditions; 3. To prevent overload of the transmission system; 4. To reduce torsional vibration impact.
After driving for so many years, I often encounter issues with incomplete clutch disengagement. The most common problem is severe wear on the clutch disc, either from prolonged city driving in heavy traffic where the clutch is frequently slipped in a semi-engaged state, thinning both the disc and pressure plate, leading to incomplete disengagement. Additionally, problems with the clutch hydraulic system are critical—like brake fluid leaks or air entering the system, making the pedal feel soft and weak, resulting in gear grinding during shifts. Sometimes, improper adjustment of the pedal free play, whether too loose or too tight, can also affect disengagement. I recommend pressing the pedal before driving to check for any changes in resistance. If anything feels off, it’s best to quickly visit a repair shop to inspect the hydraulic fluid and release bearing, rather than waiting until the transmission is damaged to regret it.
