Distance Between Hook And Needle - DURKOPP ADLER 767 Service Instructions Manual

4.3

Distance between hook and needle

7 2
1
3 4
Caution: Danger of injury !
Switch off main switch.
Check and adjust distance between hook and needle only when
sewing machine is switched off.
Standard checking
In looping stroke position the distance between hook tip 6 and the
needle hollow groove must amount to max. 0.1 mm.
–
Move needle in looping stroke position by handwheel.
6
In looping stroke position the hook tip is at the level of the middle of
the needle.
–
Check whether the needle in looping stroke position is displaced by
the hook protection 1. If this is the case, bend hook protection back
carefully.
–
Check distance between hook tip 6 and needle hollow groove.
Correction
–
Loosen screw 5 and screw 2.
–
Shift the hook case 7 accordingly.
–
The eccentric 3 must press the hook case against the guide 4.
–
Tighten screw 5 and screw 2.
1
ATTENTION !
After a correction of the distance between hook and needle:
–
Check clearance in the claw clutch and correct it, if necessary.
In case the needle size is changed:
–
Check the distance between hook and needle, eventually adjust it.
5
GB
17