Adjusting The Distance Between Hook Tips And Needles - Duerkopp Adler 745-34 Service Instructions Manual

2.5.5

Adjusting the distance between hook tips and needles

1
0,1 mm
32
2 3 4
Standard checking
7 6
In looping stroke position the distance between the hook tips 6 and the
needles 7 should amount to 0.1 mm. The set distance allows to work
with needle sizes Nm 90 to Nm 110.
When changing between these needle sizes a correction of the
distance between the hook tips and the needles is not necessary. After
changing the needle only the needle protection has to be readjusted
(see chapter 2.5.6).
The distance between hook tips and needle is set by means of the
adjusting pin 5 (order number 0244 1014).
Caution: Danger of injury !
Switch off the main switch.
Check and adjust the distance between hook tips and needles only
with the sewing unit switched off.
–
Remove the throat plate.
–
Move the needle bar in looping stroke position.
–
Put the locking peg through the drill-hole in the machine arm.
The locking peg must snap in the groove of the arm shaft crank.
–
Check the distance between hook tips and needles.
Correction
–
Remove the throat plate.
–
Remove the bobbin case top part 4 with bobbin.
–
Unscrew the fastening screws 3 of the hook cover 2.
–
Take off the hook cover 2.
–
Take the bobbin case bottom part 1 out of the hook.
For this purpose turn the handwheel back and forth slightly.
ATTENTION!
Do not use force when removing the bobbin case bottom part 1.
5