Duerkopp Adler 745-26 Service Instructions Manual page 96

96
Knife bar drive lever
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Remove the cylinder with swing lever for the thread puller after
loosening the mounting screws.
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Remove the head cover after loosening the mounting screws.
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Move the knife bar drive lever 8 into its lower dead center by
turning the handwheel.
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Loosen clamping screw 7 slightly.
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Slide the knife bar drive lever 8 in the axial direction on the shaft 6.
The clearance between the piston rod of the vented triggering
cylinder 9 and the knife bar bridge 5 must be 0.5 mm.
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Check the clearance with a feeler gauge.
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Tighten clamping screw 7.
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Loosen nut 2.
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Screw in the engaging cylinder 1 until the piston rod 3 presses the
knife bar bridge 5 down 0.5 mm.
Check the dimension with a feeler gauge between the link
frame 10 and knife holder 11.
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Tighten nut 2.
ATTENTION !
For a precise setting push in the knife holder 11 up to the collar of the
knife bar.
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Set the knife bar drive lever 8 at its upper dead center by turning
the handwheel.
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Remove the bobbin winder cover after loosening the mounting
screws.
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Loosen the screws 12 of the stroke lever 13.
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Let air into the triggering cylinder 9 and engaging cylinder 1.
Turn the main switch on.
Activate the testing program " Selecting Output Elements ".
( see Short Description DAC Chapter 6.4.6 )
Y11 = Select the center knife.
Run the cylinder in and out by pressing the F4 key in tapping
operation.
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The piston rod of the triggering cylinder 9 catches in groove 4.
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Turn the knife bar drive lever 8 slightly on the shaft 6.
In the upper dead center of the knife bar drive lever there must be
a clearance of 0.5 mm between the knife bar bridge 5 and the
extended piston rod 3.
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Tighten screws 13 and attach the bobbin winder cover.
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The piston rod 3 extended during the machine function is released.
A striking of the knife bar bridge 5 during the stroke movement is
prevented.
ATTENTION !
The swing lever for the switching on of the needle bars was also
changed. Reset the swing lever (see Chapter 15.2.2).