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Sewing unit
5.2.2 Changing the X drive
Fig. 70: Changing the X drive
(1) - Screws
(2) - Toothed belt
(3) - Motor with flange
Disassembling the X drive
To disassemble the drive:
1. Disconnect both plugs (4).
2. Loosen all 4 screws (1).
3. Pull off the motor and flange (3).
Assembling the X drive
To assemble the drive:
1. Insert a new motor and flange (3) on to the toothed belt (2).
2. Insert all 4 screws (1) and tighten them loosely.
3. Tension the toothed belt (2) using the screw (5).
Information
The toothed belt tension is set to the optimum value when the belt oscil-
lates at 384 Hz. Check the oscillation, for instance, using a device made
by Contitech.
4. Tighten all 4 screws (1).
5. Connect the plug (4).
Service Instructions 911-211 - 02.0 - 10/2016
①
②
③
(4) - Plug
(5) - Screw
⑤
④
86
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