Clutch noise such as whistling or clunking is not always an indication of a defective clutch. Whistling noises may e.g. also be caused by off-center contact of the clutch release bearing, non-centered transmission input shafts or defective pilot bearings.
Rattling noises may be due to load alterations if clutch disks are furnished with preliminary dampers.These noises do not impair the function or service life of the clutch disk. These noises do not impair the function or service life of the clutch disk.
Incorrectly installed parts or the installation of the clutch disk in an incorrect installation position can also lead to noise generation.
Therefore, it is recommended to examine the following questions:
- Was the correct part installed?
- Was it assembled in the correct installation position?
- Are pilot bearings installed and OK?
For additional information on clutch noise and expert evaluations, please go to the useful tip: "Clutch noise".