Hook Bearing Bracket - Pfaff 939 U Adjustment Manual

1

Hook bearing bracket

.05.31
Requirement
The hook shaft must be touching the hook bearing bracket adjustment gauge 1 at the top
and the side.
4
Fig. 1 - 32
● Loosen screw 3.
● Swing the bobbin case opener to the right and remove the hook.
● Loosen screw 2 and loosen the draw key underneath it by lightly tapping the head of
the screw.
● Screw on the hook bearing bracket adjustment gauge.
● It must be possible to read the numbers "438-439" from the front.
● Move or turn hook bearing bracket 4 in accordance with the requirement.
● Tighten screw 2.
● Adjust the bobbin case opener in accordance with subsection 1.05.36 Bobbin case
opener position.
1
3
Justierung
1
438 - 439
2
37