Beisler 1360-4 - Manual (Page 54)

C-14
Service Instructions Automatic Multi-Head Serging Machine 1365-4 Beisler GmbH
C.5
Maintenance
C.5.6 Replacing the roller toothed belt
1. Lower the transport unit manually onto the wor-
king plate as described in Section D, Pro-
gramming Instructions.
2. Switch the machine off.
3. Fig. 5: Slacken the toothed belt 3 by removing
the Allen screw 1 at the bearing and sliding the
spacer shaft with the transport rollers 2 up.
4. Remove the toothed belt from the drive roller and
from the idle roller.
5. To install, place the toothed belt into the idle rol-
lers and drive roller. Pretension the belt by sliding
the spacer shaft with the transport rollers down
and tightening the Allen screw 1. If the preten-
sioning is correct, it must be possible to depress
the center of the belt approx 10 mm until counter-
pressure is felt.
NOTE - Transport roller orientation!
After the toothed belt has been replaced,
the distance between the transport rollers and the working
plate must be checked.
C.5.7 Adjusting the transport rollers
Fig. 6: The transport rollers of the puller and of the
roller should contact the working plate in the lowered
position (i.e. distance A must be zero in the lowered
position).
The pressure that the transport rollers apply to the
working plate is controlled individually for each ma-
chine by a pressure reducer (see page C.15)
Setting the distance between transport rollers
and working plate:
1. Lower the transport unit manually onto the wor-
king plate as described in Section D, Pro-
gramming Instructions.
2. Switch the machine off.
3. To avoid contact between the working plate and
the transport rollers, adjust the position of the
pneumatic cylinder clamp 2 to the correspon-
ding spacer shaft 3:
• Loosen the clamp locating screw 1 and shift
the clamp on the spacer shaft. Slide clamp up
to reduce the distance, slide clamp down to
increase the distance.
Fig. 5
Fig. 6