211
9.5 F
EED
UNIT
ALS
20X
256
Replacing ball bearings
Fold pressure roller out of working position.
Screw the knurled thumbscrew [284A] all of the way
out and remove the pressure roller along with clam-
ping ring.
Remove setscrews [285G], springs [285F] and
pressure pins [285E].
Pull out the axle [285D], remove steel roller [285C]
and washer discs [285A].
Soften up the adhesive bond on both ball bearings
[285B] using a hot air blower.
Remove the ball bearings.
Remove adhesive residues from the bearing seats.
Fixing the ball bearings with adhesive:
Glue the ball bearings into the bearing seats
with Loctite 648.
Follow the adhesive manufacturer's instruc-
tions for use.
Glue the ball bearings flush with the end surfaces of
the steel roller.
Allow the adhesive bond to harden fully.
Place steel roller with washer discs in pressure roller
assembly and slide in the axle [285D], with the con-
tact surfaces [285arrows] for the pressure pins fa-
cing backwards.
Grease pressure pins, springs and setscrews and
install them in the pressure roller. Ensure that the
pressure pins mate with the contact surfaces on the
axle [286arrow].
Screw the setscrews inside the pressure roller to a
depth as described in the next chapter [286A]
Adjusting the pressure force
To set the standard initial tension of the springs, turn in
both setscrews [286A] on the rear side of the pressure
roller:
Clockwise to the same degree, to increase pressure
force.
Anticlockwise to the same degree, to decrease
pressure force.
Machine
Screw-in depth setscrews
ALS 20X
2 mm
ALS 256
4 mm
[284] Removing pressure roller
[285] Disassembling pressure roller
[286] Adjusting the pressure force
A
E
A
B
C
D
F
G
A
Summary of Contents for ALS 204
Page 1: ...ALS 204 206 256 SERVICE INSTALLATION MANUAL Labeller Edition 8 3 2012 Original version ...
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