During the production operation of JD23-63A press, abnormal impact sound often appears in the clutch end cover. In severe cases, the end cover will also be damaged. During the disassembly inspection, it was found that a hook stud with a tension spring was attached to the end face of the rocker, which increased the axial dimension of the rocker. When the clutch is frequently engaged, the vibration of the rocker member is relatively large, so that the rocker
Improvement of tension spring hook stud