Contact mark on the teeth of spline and the end of hub

Burrs at the end of hub due to uneven wear on the spline teeth

Damaged torsion springs

Damaged facing material

Oily facings

Broken facings

Wear out on teeth of spline / Cushion spring steel segments separated from hub area

Rust on the teeth of spline hub

Unable to install the clutch disc to the main drive shaft

Dropout of torsion spring/wear out of stop pin

Hit mark to spline teeth and end surface. Crack to clutch plate.