DURKOPP ADLER 755 A, Service Instructions Manual

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Needle bar
Service Instructions 755 A/756 A - 00.0 - 02/2019 39
12. Turn the handwheel until the screw (12) can be accessed through
the arm shaft crank.
13. Check whether the gear tongues (13) are parallel to one another.
14. If they are not, move the gear tongues (13) by hand until they are
parallel to one another.
15. Slightly loosen the screw (12).
 The needle bar linkage can move freely.
16. Turn the handwheel until the needle bar is at the top dead center.
17. Insert the needles.
Fig. 29: Assembling the needle bar linkage (5)
18. Turn the handwheel until the needle bar is at the bottom dead center.
19. Set the needle bar linkage by hand until the needles plunge exactly
into the center of the needle holes.
20. Turn the handwheel until the screw (12) can be accessed through
the arm shaft crank.
21. Tighten the screw (12).
Order
Then check the following settings:
• The distance between hook tips and needles ( 
p. 67
)
• Needle guard ( 
p. 69
)