Hook, Looping Stroke And Needle Bar Height; Driver Shaft - Duerkopp Adler 910 Service Instructions Manual

3. Hook, looping stroke, and needle bar height

3.1 Driver shaft

4 3
16
2 1
Caution: danger of injury!
Turn off the main switch.
Check and adjust driver shaft only when the sewing unit is switched off.
Note and control
The driver shaft 4 should have no axial backlash, but it must also not
move sluggishly.
Check the driver shaft 4 for axial backlash and sluggishness.
Adjustment
–
Unscrew screws 5 and 7 and take off oil felt pad 6.
–
Loosen screws 9 (4 screws) on the motor and pull off the motor 8.
–
Loosen screws at the adjusting rings 2 and 3.
–
Press driver shaft 4 with toothed wheel 1 completely in the
direction of the needle bar.
–
Press adjusting rings 2 and 3 against the bushing and tighten
screws.
–
Check if the shaft is snug (without clearance) and runs smoothly.
–
Insert motor 8 in direction of arrow, push up to top, and screw tight.
(See section 6.1)
–
Tighten oil felt pad 6 with the two screws 5 and 7.
9 8 7 6 5