Hook-To-Needle Clearance - Pfaff 3339 Instruction Manual

11.

Hook-to-needle clearance

09
Requirement
With the hook point in the middle of the needle scarf, the distance between the hook point
and the needle scarf must be 0,1 mm.
2
Fig. 11 - 08
Remove drift 1 (screw 2) from its shaft.
Loosen screw 3 a few rotations and loosen the draw key beneath it by hitting the head
of the screw.
Insert the hook into the hook race and hold it there.
Turn the V-belt wheel and the hook simultaneously until the hook point is exactly in the
middle of the needle scarf.
Move the drift shaft bearing (with the hook race) along the length of the arm in
accordance with the requirement.
Remove the hook from the hook race.
Tighten screw 3.
Carry out a check in accordance with the requirement.
3
1
Adjustment
11 - 9