Dürkopp Adler 667 PREMIUM, Service Instructions Manual

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Aligning the needle bar linkage
42 Service Instructions 667 PREMIUM - 03.0 - 01/2018
2. Remove the arm cover (

p. 18 ).
3. Remove the head cover (

p. 19 ).
4. Remove the valve cover (

p. 20 ).
5. Loosen the threaded pins (1) on the two adjusting rings of the shaft for
the needle bar linkage.
6. Loosen the screw (2).
FIg. 28: Aligning the needle bar linkage sideways (2)
7. Loosen both threaded pins (5) on the arm shaft crank (7). Make sure
that the threaded pins stay on the surface.
8. Move the needle bar linkage (3) sideways such that the needle pierces
exactly in the center of the needle hole (4) for the feed dog.
9. Push the two adjusting rings inwards as far as they will go and tighten
them, so that there is no axial play.
10. Tighten the threaded pins (1) on the two adjusting rings.
11. Tighten the screw (2).
12. Align the thread lever (6) exactly in the middle of the slot.
13. Tighten both threaded pins (5) on the arm shaft crank (7).
14. Finish the service routine.
Order
Then, check the following settings:
• Distance between hook and needle (

p. 44 )
• Loop stroke position (

p. 46 )
(3) - Needle bar linkage
(4) - Throat plate
(5) - Threaded pins
(6) - Thread lever
(7) - Arm shaft crank
⑥ ⑦
③
④ ⑤