Maintenance – Beisler 1360-4 User Manual
Page 53
C-13
Service Instructions Automatic Multi-Head Serging Machine1365-4
Beisler GmbH
C.5
Maintenance
C.5.5 Transport unit toothed belts
The transport unit at the A and B machines consists of three compon-
ents that are each driven by a toothed belt:
Stepper motor,
puller (fabric transport),
roller (assist transport)
Replacing the stepper motor toothed belt:
1. Lower the transport unit manually onto the working plate as descri-
bed in Section D, Programming Instructions.
2. Switch the machine off.
3. Fig. 4: Slacken the toothed belt 1 by removing the locating screw
3 of the stepper motor mounting plate.
4. Lift the toothed belt out of the stepper motor drive roller 2 and abo-
ve the transport roller 6; for this, the pneumatic cylinder rod 4
must be removed from the lower suspension 5.
5. To install, route the toothed belt over the fabric transport linkage; po-
sition it on the shaft drive roller, then position it on the stepper motor
drive roller.
6. To pretension the toothed belt, push the plate with the stepper motor
down and tighten the locating screw 3. If the pretensioning is cor-
rect, it must be possible to depress the center of the belt approx 5
mm until counterpressure is felt.
7. Install the pneumatic cylinder rod to the mounting block and secure
it using the screws.
Replacing the fabric transport toothed belt:
1. Lower the transport unit manually onto the working plate as descri-
bed in Section D, Programming Instructions.
2. Switch the machine off.
3. Fig. 4: Slacken the toothed belt
8 by removing the Allen screw
7 at the bearing and sliding the
spacer shaft with the transport rol-
lers 6 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 rollers and drive rol-
ler. Pretension the belt by sliding
the spacer shaft with the transport
roller down and tightening the Al-
len screw 7. If the pretensioning
is correct, it must be possible to
depress the center of the belt ap-
prox 10 mm until counterpressure
is felt.
Fig. 4