Duerkopp Adler 745-26 Service Instructions Manual page 74

15.2.2 Switching the Needle Bars On
3 3
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With the cylinder 6 not operated the needle bars are switched off and
arrested in the high position.
The extending piston rod of the cylinder 6 operates the latch 3.
The coupling in of the needle bars occurs at that moment when the the
crosshead reaches its upper dead center.
Caution Risk of Injury !
Turn the main switch off.
Conduct the setting only with the main switch turned off.
ATTENTION !
The subclass 745 - 28 is equipped with 2 latches.
The 2nd latch is to be set analogously.
Switching the needle bars on manually:
–
Press latch 3 down and hold operated.
–
Couple the needle bars in by turning the handwheel.
–
If the latch 3 is not held operated the needle bars couple out again
at the next revolution in the high position.
In the highest (unoperated) position of the latch 3:
The clearance between the lower edge 2 of the catch 1 and the
edge 4 of the latch must be 0.5 mm.
–
Set the clearance by moving the cylinder 6.
In the lowest (operated) position of the latch 3:
The swing lever 9 must, with its lower edge 8, move past approx.
1 mm above the edge 4 of the latch.
–
Loosen the lock nut on adjusting screw 7.
–
Pull latch 3 back against catch 1.
Push latch 3 down manually into its lowest position and hold fast.
–
Turn the handwheel until the swing lever 9 moves into the recess
on latch 3.
The lower edge 8 of the swing lever lies opposite the edge 4 of the
latch.
–
Set the clearance between both edges by turning the adjusting
screw 7.
Measure the clearance with a feeler gauge.
–
Tighten the lock nut on adjusting screw 7.
Position of the swing lever 9:
When cylinder 6 is vented the latch 3 catches with its tappet 4 under
the catch 1.
At its farthest swing to the back (in direction of the arrow) the swing
lever 9 must still just push the latch 3 off the catch 1.
–
Swing swing lever 9 out of the area of latch 3 by turning the
handwheel.
–
Release latch 3.
The latch catches with its tappet 10 under the catch 1.
Loosen clamping screw 13 slightly.
Continued on the next page !