Duerkopp Adler 745-22 Service Instructions Manual page 26

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Adjusting the scale
With the 745-22 and 745-23 the scale 7 with the dimension
corresponding to the sewing distance (in the example 150 mm) must
lie congruent to the edge 6 of the knife bracket 2 ("seam beginning").
–
Loosen screw 9 slightly.
–
Set the scale 7 with the dimension 150 mm (see Example)
congruent to the edge 6 of the knife bracket 2.
With the 745-24 the scale 14 with the dimension corresponding to the
sewing distance (in the example 150 mm) must lie congruent to the
edge 15 of the knife bracket 11 ("seam end").
–
Loosen screw 10 slightly.
–
Set the scale 14 with the dimension 150 mm (see Example)
congruent to the edge 15 of the knife bracket 11.
Thus the scale is also correctly set for the changeover to the sewing
distances L2 and L3 (see Operating Instructions).
Aligning the corner incisions to the seams
The corner incisions must lie symmetric to the seams (illustration a).
The clearance of the incision ends to the seams must be equal on both
sides (illustration b).
a)
–
Loosen screw 8.
–
Turn rod accordingly.
Set a clearance of approx. 5 mm between the block 1 and the knife
bracket 2 with the cylinder run in on both subclasses. The safety
clearance prevents a striking of the piston rod in the cylinder.
–
Tighten screw 8.
–
Set the same clearance between incision end and seam on both
sides.
745-22: Turn stop nut 4.
745-23: Turn the eccentric 9.
745-24: Turn stop nut 12.
Setting the stroke speed of the corner knives
–
Regulate the stroke speed at the one-way restrictor valves 5
(745-22; -23) or 13 (745-24).
The rising movement should be rapid, but not jerky.
b)