DURKOPP ADLER 171 - Adjusting the Symmetry of the Hook

Position of needle and hook
Service Instructions 171/173 - 00.0 - 01/2020 23
6.4 Adjusting the symmetry of the hook
Fig. 9: Adjusting the symmetry of the hook (1)
Proper setting
With the machine locked in place, the hook tip is lined up with the middle
of the needle in both slot B and slot C ( p. 13).
The hook tip is behind the needle in slot C ( p. 13).
The hook tip is in front of the needle in slot B ( p. 13).
Fig. 10: Adjusting the symmetry of the hook (2)
To adjust the symmetry of the hook:
1. Fasten the gage (1) on the hook drive housing.
2. Assemble the pointer (2) on top of the hook shaft.
with direction of rotation
against direction of rotation
- slot B
- slot C
(1) - Gage (2) - Pointer
②
①