DURKOPP ADLER H-Type 969, Service Instructions Manual, Page: 54 / 90

Position of the hook and needle
52 Service Instructions 969 - 01.0 - 12/2015
3. Tighten the adjusting screw (3).
Note that a low tightening torque when turning the eccentric pin (1) can
lead to high toothed belt tension.
4. Check the belt tension and adjust it if necessary.
10.2 Adjusting the dead center of the reciprocating movement
of the driver
Proper setting
At 155°, the driver is at its dead center (movement in counterclockwise
direction).
Cover
• Upper right cover (

p. 12).
• Tilt the machine head (

p. 10).
Fig. 35: Dead center of the reciprocating movement of the driver
Setting steps
1. Loosen the screws (2).
2. Turn the eccentric (1).
3. Tighten the screws (2).
4. Check if the dead center (3) is at 155°; adjust it again if necessary.
(1) - Eccentric
(2) - Screws
(3) - Dead center
①
②
③