GBC Auto 50 MBM Crease - Manual (Page 14)

Top Shaft Alterations
Collar
Bush
Top Shaft and
Perforation Wheel
The top shaft must be in its raised position to be removed. It is removed by undoing the
grub screw in the collar on the left hand end and sliding the collar to the right and out of
the bush, allowing the end of the shaft to come towards you. It can then be removed from
its location on the right hand side. The components on the shaft can then be loosened,
slide off and repositioned in the desired order.
Note. The perforation wheel is positioned between two drive wheels and is sprung
loaded. This arrangement must stay the same wherever you position the perforation wheel
along the shaft.
All screws should be tightened onto the machined flat so that the shaft is not damaged.
Refitting is the opposite of removing. Locate the right hand end of the shaft in the bush
on the right side of the machine, line up the left hand side and slide the collar into the
bush. Tighten the screw to secure.
Accurate setting of this wheel can only be achieved when a test document is run, and
final adjustments to measurements should be made at this stage.
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