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Assembling the sewing motor
Fig. 69: Assembling the sewing motor
(1) - Toothed belt
(2) - Toothed belt wheel
(3) - Plate
To assemble the sewing motor:
1. Screw the new motor (4) onto the plate (3) using the screws (5).
2. Assemble the toothed belt wheel (2).
3. Insert the plate (3) with the motor (4).
4. Slightly tighten the screws (6).
5. Place and tighten the toothed belt (1).
Information
The toothed belt tension is set to the optimum value when the belt oscil-
lates at 284 Hz. Check the oscillation, for instance, using a device made
by Contitech.
6. Tighten the screws (6).
7. Check if the toothed belt (1) operates in parallel.
8. Place the toothed belt cover ( p. 20).
9. Connect the motor plug with the control.
85
①
②
③
To do so, tighten the screw on the toothed belt wheel.
If necessary, set parallel operation at the toothed belt wheel.
⑥
⑤
④
(4) - Motor
(5) - Screws
(6) - Screws
Service Instructions 911-211 - 02.0 - 10/2016
Sewing unit
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