Pfaff 3519-4/01, Instruction Manual, Page: 72 / 160

Adjustment
72
13
.05.04
Hook shaft bearing and toothed belt tension
Requirement
The front edge of the hook shaft 1. 6 must be at a distance of 14.5 mm to the needle
center. At the same time, the slot in the hook shaft bearing 1 (see arrow) must be
parallel to the bedplate and pointing opposite to the direction of sewing.
The toothed belt should be tightened in such a way that, when the gauge is pushed 2.
onto the toothed belt, the marking in the gauge window corresponds to the marking
on the bushing.
Align hook shaft bearing
●
1 (screw 2) according to requirement 1.
Push the gauge (Part-No.
●
61-111 639-76) onto the toothed belt so that it is centred to the
toothed belt and touching the bearing of the sliding shaft. The gauge window must be
facing the hook.
Eccentric
●
3 (screw 4) clockwise in accordance with requirement 2, taking care that the
axial position of eccentric 3 is not altered.
1
2
14,5 mm
5
Fig. 13 - 05
1
3
4