1 Shear off the locking tab (2) in the locking groove (3) on the shaft (4) completely using a sharp chisel (5).
The locking tab (2) must be sheared off completely as remains of locking tab (2) can damage the thread of the shaft (4) when unscrewing the collar nut (1).
W35.25-1004-01
The collar nut (1) is completely unlocked when the locking tab is completely sheared off on the shaft (4) in the area (arrow) of the locking tab (3).