Positioning the toothed belt wheels
Service Instructions 869-M PREMIUM - 00.0 - 07/2018 31
6.2 Positioning the lower toothed belt wheel
Fig. 18: Positioning the lower toothed belt wheel
Proper setting
The 2 threaded pins for the lower toothed belt wheel are seated flush on
the flat of the lower shaft.
The toothed belt (1) runs correctly without running against the retaining
ring (2) or slipping off.
To position the lower toothed belt wheel:
1. Tilt the machine head ( p. 17).
2. Loosen the threaded pins (4).
3. Turn the lower toothed belt wheel (3) such that the threaded pins (4)
are seated on the flat of the arm shaft.
4. Move the lower toothed belt wheel (3) sufficiently far to the side so that
the toothed belt (1) makes contact with the retaining ring (2) without
being pushed away.
5. Tighten the threaded pins (4).
(1) - Toothed belt
(2) - Retaining ring
(3) - Lower toothed belt wheel
(4) - Threaded pins
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