Looping Stroke And Needle Guard - Duerkopp Adler 530 Service Instructions Manual

3.6 Looping stroke and needle guard

7
8
22
Caution: Danger of injury!
Switch off main switch.
Check and adjust looping stroke and needle guard only
when the button sewing automat is switched off.
Standard checking
The needle bar 1 is provided with four notches as adjusting aid.
The two lower notches are used on the needlesystem DPx17(530-211).
The looping stroke is the way of the needle 2 from its bottom dead
centre to the point where the hook tip 1 is at the level of the middle of
the needle.
In looping stroke position, the needle should be pushed away slightly
from the driver (needle guard).
–
Insert a new, straight needle.
6
–
Move needle bar 8 into its lowest position by turning the
handwheel.
–
Turn handwheel in direction of rotation until the lower notch 6
(DPx17) stands at the bottom of the needle bar bush 8.
7
–
Press hook 5 against the driver 4 in the opposite direction of
rotation.
–
Check whether the hook tip 1 is at the level of the middle of the
needle.
–
Check whether the needle is pushed away from the driver tip a little
bit (needle guard).
Correction
–
Loosen screw 3 at the driver 4.
–
Twist driver correspondingly.
–
Shift driver axially in such a way that the needle abuts on the driver
tip and is pushed away a little bit.
–
Tighten screw 3.
2
1
5
4
3